http://sedici.unlp.edu.ar:80/handle/10915/168038 Thu, 12 Nov 2026 23:10:27 GMT 2026-11-12T23:10:27Z http://sedici.unlp.edu.ar:80/handle/10915/168084 Edicion de revista Cuadernos de Herpetología; vol. 35, no. 2 Trabajos - Gender inequities in herpetology: the case of the Argentine community | Mariana Chuliver, Jimena Grosso, Gabriela Fontanarrosa, Jessica Fratani, Daiana Paola Ferraro, Ana Sofía Duport-Bru, Rosío Gabriela Schneider, María Dolores Casagranda, Laura Pereyra, Natalin Vicente,María José Salica, Regina Gabriela Medina, Carla Adriana Bessa, Romina Semhan, Miriam Corina Vera - Filling some of the gap of ecological information’s of a Brazilian Vulnerable lizard (Tropidurus hygomi) | Francis Luiz Santos Caldas, Rafael Alves dos Santos, Daniel Oliveira Santana, Renato Gomes Faria - Composition and natural history of the snake community in a preserved forest in Central Amazonia, Pará, Brazil | Jossehan Galúcio da Frota, Maria Cristina dos Santos-Costa, Ana Lúcia da Costa Prudente - Diet of two sympatric species of the Leptodactylus fuscus group: Leptodactylus longirostris (Boulenger, 1882) and Leptodactylus mystaceus (Spix, 1824) in the Brazilian Amazon rainforest | Aline Emanuele Oliveira-Souza, Maria Madalena Salviano Santana, Patrick Ribeiro Sanches, Carlos Eduardo Costa-Campos - Breeding success and conservation of Eretmochelys imbricata in the Delta do Parnaíba Environmental Protection Area, northeastern Brazil | Manoel Neto Pinto Nascimento, Kássio de Castro Araújo,Werlanne Mendes Santana, Edlayne Mendes Santana,Ocivana Araújo Pereira, Anderson Guzzi - Foraging behavior and diet composition of the gecko Phyllopezus periosus (Squamata: Phyllodactylidae) in the Brazilian semiarid Caatinga | Cristiane Nikely Silva Palmeira, Ubiratan Gonçalves, Raul Fernandes Dantas Sales, Eliza Maria Xavier Freire - Uso do pó fluorescente no estudo de rastreamento de serpentes na Floresta Atlântica, Nordeste, Brasil | Luiz Filipe Lira Lima, Vanessa do Nascimento Barbosa, Ednilza Maranhão dos Santos -Reptiles of the Iron Quadrangle: a species richness survey in one of the most human exploited biodiversity hotspots of the world | Rafael Magalhães Mol, Arthur Toledo Ramos Costa França, Pedro Henrique Tunes, Cláudia Guimarães Costa, Cinara Alves Clemente Notas - Behavioral aspects during the subjugation of prey by Micrurus ibiboboca (Merrem, 1820) (Squamata: Elapidae) | Tarciso Roberto Sena da Silva, Maria Laura Silva Santos, Vanessa do Nascimento Barbosa, Ednilza Maranhão dos Santos - Novel behavioral observations of the lizard Tropidurus hispidus (Squamata: Tropiduridae) in Northeastern Brazil | Juliana Delfino de Sousa, José Henrique de Andrade Lima, Maria Eduarda de Araújo Almeida, Ítalo Társis Ferreira de Sousa, Jonathan Francisco de Almeida, Marcelo Nogueira de Carvalho Kokubum - Diet of the lizard Ameiva ameiva (Linnaeus, 1758) (Teiidae: Squamata) from northwestern Mato Grosso, Brazil | Sidney Munhoz Sanches, Ricardo Lourenço-de-Moraes, Adriane Barth - First report of hemiclitores in female lizards of the genus Ophiodes Wagler, 1828 (Squamata: Anguidae) | Paola Rosa de Oliveira, Thais Teixeira de Souza, Maria Christina Marques Nogueira Castañon, Jorge Abdala Dergam, Bernadete Maria de Sousa - Diet of Dendropsophus counani (Anura: Hylidae) during breeding season in the Eastern Amazonia | Patrick Ribeiro Sanches, Fillipe Pedroso-Santos, Carlos Eduardo Costa-Campos - A Goliath among Davids: An impressive new size record for Siphonops annulatus (Mikan, 1920) | Uécson Suendel Costa de Oliveira, Matheus Soares França - First record of Scinax tropicalia Novaes-e-Fagundes, Araujo-Vieira, Entiauspe, Roberto, Orrico, Solé, Haddad, and Loebmann, 2021, for the Pernambuco Endemism Center, northeastern Brazil | Ednilza Maranhão dos Santos, Flávio José da Silva, Emerson Gonçalves Dias, Gleymerson Vieira Lima de Almeida, Robson W. Ávila, Igor Joventino Roberto Novedades zoogeográficas - Presencia de Oxyrhopuspetolarius (Serpentes: Colubridae) en el Pantanal Paraguayo | Pier Cacciali, Marcela Ferreira Riveros, Alexis Arias, Asterio Ferreira - First record of Nectocaeciliapetersii (Boulenger, 1882) (Gymnophiona: Typhlonectidae) for the state of Acre, Brazil | Adriano Oliveira Maciel, Marllus Rafael Negreiros de Almeida, Adaís Batista da Silva Sales, Andesson de Souza Oliveira, Luan Gabriel de Queiroz Andrade, Wirven Lima da Fonseca, Paulo Sérgio Bernard - Distribution extension of Ceratophrys joazeirensis Mercadal, 1986 (Anura: Ceratophryidae): second record from the state of Minas Gerais, southeastern Brazil | Maria Clara do Nascimento, Fred Victor de Oliveira, Fernando Leal, Henrique C. Costa - Extension of the distribution of Pantherophis emoryi (Baird & Girard, 1853) (Squamata: Colubridae) in Mexico | Víctor Vásquez-Cruz, Erika Olivares-Blanco, Rafael Peralta-Hernández, Jorge Luis Castillo- Juárez, Aurelio Molina-Hernández - Nuevos registros de distribución para Dendropsophus rhodopeplus (Amphibia: Anura: Hylidae) en los departamentos de Caquetá y Putumayo — Colombia | Maykoll J. Parra-Olarte, Alejandro Navarro-Morales, Alexander Velásquez-Valencia, Diego Huseth Ruiz-Valderrama Wed, 01 Sep 2021 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/168084 2021-09-01T00:00:00Z Trabajos - Gender inequities in herpetology: the case of the Argentine community | Mariana Chuliver, Jimena Grosso, Gabriela Fontanarrosa, Jessica Fratani, Daiana Paola Ferraro, Ana Sofía Duport-Bru, Rosío Gabriela Schneider, María Dolores Casagranda, Laura Pereyra, Natalin Vicente,María José Salica, Regina Gabriela Medina, Carla Adriana Bessa, Romina Semhan, Miriam Corina Vera - Filling some of the gap of ecological information’s of a Brazilian Vulnerable lizard (Tropidurus hygomi) | Francis Luiz Santos Caldas, Rafael Alves dos Santos, Daniel Oliveira Santana, Renato Gomes Faria - Composition and natural history of the snake community in a preserved forest in Central Amazonia, Pará, Brazil | Jossehan Galúcio da Frota, Maria Cristina dos Santos-Costa, Ana Lúcia da Costa Prudente - Diet of two sympatric species of the Leptodactylus fuscus group: Leptodactylus longirostris (Boulenger, 1882) and Leptodactylus mystaceus (Spix, 1824) in the Brazilian Amazon rainforest | Aline Emanuele Oliveira-Souza, Maria Madalena Salviano Santana, Patrick Ribeiro Sanches, Carlos Eduardo Costa-Campos - Breeding success and conservation of Eretmochelys imbricata in the Delta do Parnaíba Environmental Protection Area, northeastern Brazil | Manoel Neto Pinto Nascimento, Kássio de Castro Araújo,Werlanne Mendes Santana, Edlayne Mendes Santana,Ocivana Araújo Pereira, Anderson Guzzi - Foraging behavior and diet composition of the gecko Phyllopezus periosus (Squamata: Phyllodactylidae) in the Brazilian semiarid Caatinga | Cristiane Nikely Silva Palmeira, Ubiratan Gonçalves, Raul Fernandes Dantas Sales, Eliza Maria Xavier Freire - Uso do pó fluorescente no estudo de rastreamento de serpentes na Floresta Atlântica, Nordeste, Brasil | Luiz Filipe Lira Lima, Vanessa do Nascimento Barbosa, Ednilza Maranhão dos Santos -Reptiles of the Iron Quadrangle: a species richness survey in one of the most human exploited biodiversity hotspots of the world | Rafael Magalhães Mol, Arthur Toledo Ramos Costa França, Pedro Henrique Tunes, Cláudia Guimarães Costa, Cinara Alves Clemente Notas - Behavioral aspects during the subjugation of prey by Micrurus ibiboboca (Merrem, 1820) (Squamata: Elapidae) | Tarciso Roberto Sena da Silva, Maria Laura Silva Santos, Vanessa do Nascimento Barbosa, Ednilza Maranhão dos Santos - Novel behavioral observations of the lizard Tropidurus hispidus (Squamata: Tropiduridae) in Northeastern Brazil | Juliana Delfino de Sousa, José Henrique de Andrade Lima, Maria Eduarda de Araújo Almeida, Ítalo Társis Ferreira de Sousa, Jonathan Francisco de Almeida, Marcelo Nogueira de Carvalho Kokubum - Diet of the lizard Ameiva ameiva (Linnaeus, 1758) (Teiidae: Squamata) from northwestern Mato Grosso, Brazil | Sidney Munhoz Sanches, Ricardo Lourenço-de-Moraes, Adriane Barth - First report of hemiclitores in female lizards of the genus Ophiodes Wagler, 1828 (Squamata: Anguidae) | Paola Rosa de Oliveira, Thais Teixeira de Souza, Maria Christina Marques Nogueira Castañon, Jorge Abdala Dergam, Bernadete Maria de Sousa - Diet of Dendropsophus counani (Anura: Hylidae) during breeding season in the Eastern Amazonia | Patrick Ribeiro Sanches, Fillipe Pedroso-Santos, Carlos Eduardo Costa-Campos - A Goliath among Davids: An impressive new size record for Siphonops annulatus (Mikan, 1920) | Uécson Suendel Costa de Oliveira, Matheus Soares França - First record of Scinax tropicalia Novaes-e-Fagundes, Araujo-Vieira, Entiauspe, Roberto, Orrico, Solé, Haddad, and Loebmann, 2021, for the Pernambuco Endemism Center, northeastern Brazil | Ednilza Maranhão dos Santos, Flávio José da Silva, Emerson Gonçalves Dias, Gleymerson Vieira Lima de Almeida, Robson W. Ávila, Igor Joventino Roberto Novedades zoogeográficas - Presencia de Oxyrhopuspetolarius (Serpentes: Colubridae) en el Pantanal Paraguayo | Pier Cacciali, Marcela Ferreira Riveros, Alexis Arias, Asterio Ferreira - First record of Nectocaeciliapetersii (Boulenger, 1882) (Gymnophiona: Typhlonectidae) for the state of Acre, Brazil | Adriano Oliveira Maciel, Marllus Rafael Negreiros de Almeida, Adaís Batista da Silva Sales, Andesson de Souza Oliveira, Luan Gabriel de Queiroz Andrade, Wirven Lima da Fonseca, Paulo Sérgio Bernard - Distribution extension of Ceratophrys joazeirensis Mercadal, 1986 (Anura: Ceratophryidae): second record from the state of Minas Gerais, southeastern Brazil | Maria Clara do Nascimento, Fred Victor de Oliveira, Fernando Leal, Henrique C. Costa - Extension of the distribution of Pantherophis emoryi (Baird & Girard, 1853) (Squamata: Colubridae) in Mexico | Víctor Vásquez-Cruz, Erika Olivares-Blanco, Rafael Peralta-Hernández, Jorge Luis Castillo- Juárez, Aurelio Molina-Hernández - Nuevos registros de distribución para Dendropsophus rhodopeplus (Amphibia: Anura: Hylidae) en los departamentos de Caquetá y Putumayo — Colombia | Maykoll J. Parra-Olarte, Alejandro Navarro-Morales, Alexander Velásquez-Valencia, Diego Huseth Ruiz-Valderrama http://sedici.unlp.edu.ar:80/handle/10915/168083 Comunicacion Cuadernos de Herpetología; vol. 35, no. 2 Dendropsophus rhodopeplus es una rana perteneciente a la familia Hylidae, descrita por Günther, 1858, registrándose desde el sur de Colombia a través de Ecuador, Perú, Brasil y el norte de Bolivia a una altura entre 300 a 1700 m.s.n.m comprendiendo zonas de piedemonte y tierras bajas amazónicas (Duellman, 1972, Frost, 2021). Para Colombia se ha reportado en la región amazónica en los departamentos de Amazonas y Caquetá (Ruiz et al., 1996; Lynch, 2005; Medina-Rangel et al., 2019). El objetivo de esta nota es ampliar la distribución conocida de esta especie de rana, registrando dos nuevas localidades sobre el piedemonte andino amazónico en Colombia. Wed, 01 Sep 2021 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/168083 2021-09-01T00:00:00Z Dendropsophus rhodopeplus es una rana perteneciente a la familia Hylidae, descrita por Günther, 1858, registrándose desde el sur de Colombia a través de Ecuador, Perú, Brasil y el norte de Bolivia a una altura entre 300 a 1700 m.s.n.m comprendiendo zonas de piedemonte y tierras bajas amazónicas (Duellman, 1972, Frost, 2021). Para Colombia se ha reportado en la región amazónica en los departamentos de Amazonas y Caquetá (Ruiz et al., 1996; Lynch, 2005; Medina-Rangel et al., 2019). El objetivo de esta nota es ampliar la distribución conocida de esta especie de rana, registrando dos nuevas localidades sobre el piedemonte andino amazónico en Colombia. http://sedici.unlp.edu.ar:80/handle/10915/168082 Comunicacion Cuadernos de Herpetología; vol. 35, no. 2 Great Plains Rat Snake, Pantherophis emoryi (Baird & Girard, 1853) (Squamata: Colubridae), it´s a medium-size snake (total length=1530 mm; Heimes, 2016). Its distribution is wide, ranging from southwestern Illinois, Missouri, southern South Dakota and southeastern Colorado in the United States, to the south in Mexico in the states of Aguascalientes, Chihuahua, Coahuila, Durango, Hidalgo, Nuevo León, Querétaro, San Luis Potosí, Tamaulipas and Veracruz (Heimes, 2016; Uetz et al., 2021) Recently, Quintero-Díaz et al. (2016), provide the first record of P. emoryi in the state of Aguascalientes and a list of localities and museum specimens. It inhabits a great variety of environments, in arid and tropical regions; its occurrence seems to be limited to the proximity of permanent bodies of water (Ramírez-Bautista et al., 2014). Wed, 01 Sep 2021 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/168082 2021-09-01T00:00:00Z Great Plains Rat Snake, Pantherophis emoryi (Baird & Girard, 1853) (Squamata: Colubridae), it´s a medium-size snake (total length=1530 mm; Heimes, 2016). Its distribution is wide, ranging from southwestern Illinois, Missouri, southern South Dakota and southeastern Colorado in the United States, to the south in Mexico in the states of Aguascalientes, Chihuahua, Coahuila, Durango, Hidalgo, Nuevo León, Querétaro, San Luis Potosí, Tamaulipas and Veracruz (Heimes, 2016; Uetz et al., 2021) Recently, Quintero-Díaz et al. (2016), provide the first record of P. emoryi in the state of Aguascalientes and a list of localities and museum specimens. It inhabits a great variety of environments, in arid and tropical regions; its occurrence seems to be limited to the proximity of permanent bodies of water (Ramírez-Bautista et al., 2014). http://sedici.unlp.edu.ar:80/handle/10915/168081 Comunicacion Cuadernos de Herpetología; vol. 35, no. 2 The collected specimen is a juvenile whose external morphology fits well in the diagnosis of Ceratophrys joazeirensis, such as a triangular, medium developed eyelid appendix and the dorsal color pattern with three dorsolateral blotches on each side, resembling a trident (Mercadal, 1986). Two weeks after the collection, HCC visited the site but the weather was dry. The ponds have dried up and no horned-frog was heard or spotted, reinforcing the explosive breeding behavior of this elusive species. Wed, 01 Sep 2021 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/168081 2021-09-01T00:00:00Z The collected specimen is a juvenile whose external morphology fits well in the diagnosis of Ceratophrys joazeirensis, such as a triangular, medium developed eyelid appendix and the dorsal color pattern with three dorsolateral blotches on each side, resembling a trident (Mercadal, 1986). Two weeks after the collection, HCC visited the site but the weather was dry. The ponds have dried up and no horned-frog was heard or spotted, reinforcing the explosive breeding behavior of this elusive species. http://sedici.unlp.edu.ar:80/handle/10915/168080 Comunicacion Cuadernos de Herpetología; vol. 35, no. 2 Our register was made approximately 1000 km southwestern far from the closest known occurrence of the species, in Uarini, Amazonas, Brazil, and it is the first record of Nectocaecilia to the region of the Juruá Sub-basin, and to the state of Acre, Brazil. This discovery reinforces that N. petersii can be widely distributed in Amazonia, probably being just less common than P. kaupii and T. compressicauda, which are more numerous in scientific collections (Maciel and Hoogmoed, 2011). In fact, elements that drive demographic dynamics in populations of caecilians remain unknown, especially when referring to aquatic species. Wed, 01 Sep 2021 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/168080 2021-09-01T00:00:00Z Our register was made approximately 1000 km southwestern far from the closest known occurrence of the species, in Uarini, Amazonas, Brazil, and it is the first record of Nectocaecilia to the region of the Juruá Sub-basin, and to the state of Acre, Brazil. This discovery reinforces that N. petersii can be widely distributed in Amazonia, probably being just less common than P. kaupii and T. compressicauda, which are more numerous in scientific collections (Maciel and Hoogmoed, 2011). In fact, elements that drive demographic dynamics in populations of caecilians remain unknown, especially when referring to aquatic species. http://sedici.unlp.edu.ar:80/handle/10915/168079 Comunicacion Cuadernos de Herpetología; vol. 35, no. 2 Este registro es un aporte más al conocimiento de la fauna en áreas silvestres protegidas del Paraguay. Oxyrhopus petolarius es una especie categorizada como En Peligro para Paraguay, con escasos registros en colecciones biológicas, representada hasta el momento en un hábitat que ha perdido gran parte de su cobertura original como lo es el Bosque Atlántico del Alto Paraná y se estima que la extensión de la especie en el país es de menos de 100 km2 (Martínez et al., 2020). La especie era conocida en tres áreas protegidas en el este de Paraguay (Cacciali et al., 2015). Este registro aumenta a 33 las especies de reptiles protegidas en la Reserva Pantanal Paraguayo (Cacciali et al., 2015). Wed, 01 Sep 2021 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/168079 2021-09-01T00:00:00Z Este registro es un aporte más al conocimiento de la fauna en áreas silvestres protegidas del Paraguay. Oxyrhopus petolarius es una especie categorizada como En Peligro para Paraguay, con escasos registros en colecciones biológicas, representada hasta el momento en un hábitat que ha perdido gran parte de su cobertura original como lo es el Bosque Atlántico del Alto Paraná y se estima que la extensión de la especie en el país es de menos de 100 km2 (Martínez et al., 2020). La especie era conocida en tres áreas protegidas en el este de Paraguay (Cacciali et al., 2015). Este registro aumenta a 33 las especies de reptiles protegidas en la Reserva Pantanal Paraguayo (Cacciali et al., 2015). http://sedici.unlp.edu.ar:80/handle/10915/168078 Comunicacion Cuadernos de Herpetología; vol. 35, no. 2 Scinax tropicalia was recently described for the Atlantic Rainforest of northeastern Brazil, displaying a disjoined geographic distribution in the states of Bahia and Ceará. This report presents the first record of S. tropicalia for the Pernambuco Endemism Center, based on morphology, coloration and acoustic data, including new records from the states of Alagoas and Pernambuco, expanding the geographic distribution of the species in more than 800 km north from its type locality. Wed, 01 Sep 2021 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/168078 2021-09-01T00:00:00Z Scinax tropicalia was recently described for the Atlantic Rainforest of northeastern Brazil, displaying a disjoined geographic distribution in the states of Bahia and Ceará. This report presents the first record of S. tropicalia for the Pernambuco Endemism Center, based on morphology, coloration and acoustic data, including new records from the states of Alagoas and Pernambuco, expanding the geographic distribution of the species in more than 800 km north from its type locality. http://sedici.unlp.edu.ar:80/handle/10915/168077 Comunicacion Cuadernos de Herpetología; vol. 35, no. 2 Siphonops annulatus (Mikan, 1822) is a neotropical caecilian widely distributed in the Amazon and Atlantic Forests. It is among the best studied caecilians in the Neotropical region, but many aspects of its natural history remain poorly known. Here we report an exceptionally large individual of S. annulatus from Rondonia, Brazil. At 720 mm total length, this specimen is much larger than the previously largest reported for the species at 539 mm. Wed, 01 Sep 2021 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/168077 2021-09-01T00:00:00Z Siphonops annulatus (Mikan, 1822) is a neotropical caecilian widely distributed in the Amazon and Atlantic Forests. It is among the best studied caecilians in the Neotropical region, but many aspects of its natural history remain poorly known. Here we report an exceptionally large individual of S. annulatus from Rondonia, Brazil. At 720 mm total length, this specimen is much larger than the previously largest reported for the species at 539 mm. http://sedici.unlp.edu.ar:80/handle/10915/168076 Comunicacion Cuadernos de Herpetología; vol. 35, no. 2 Dendropsophus counani is a rare neotropical treefrog that descend from the canopy of the trees to breed. Due to the low rate of encounter, ecology information is insuficient. The objective of this study was described here its diet composition during breeding season from Eastern Amazon. The stomach contents of N = 46 specimens (37 males and 9 females) were analyzed. A total of N = 37 prey items that included into 10 categories were determined for males while two categories for females. Araneae was the most important prey item for both sexes. Niche breadth (Bsta) was 0.48, suggesting that D. counani is a generalist predator. Diet composition of D. counani contribute to the natural history data and it may use in future categorization of neotropical frogs. Wed, 01 Sep 2021 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/168076 2021-09-01T00:00:00Z Dendropsophus counani is a rare neotropical treefrog that descend from the canopy of the trees to breed. Due to the low rate of encounter, ecology information is insuficient. The objective of this study was described here its diet composition during breeding season from Eastern Amazon. The stomach contents of N = 46 specimens (37 males and 9 females) were analyzed. A total of N = 37 prey items that included into 10 categories were determined for males while two categories for females. Araneae was the most important prey item for both sexes. Niche breadth (Bsta) was 0.48, suggesting that D. counani is a generalist predator. Diet composition of D. counani contribute to the natural history data and it may use in future categorization of neotropical frogs. http://sedici.unlp.edu.ar:80/handle/10915/168075 Comunicacion Cuadernos de Herpetología; vol. 35, no. 2 In some species of Squamata, the hemiclitoris is a structure homologous to the hemipenis, and may be used as a taxonomic character. These structures showed similar morphology in males and females in different species of the group; however, some studies have identified morphological variation among them. In this context, we described for the first time the morphological characteristics of the hemiclitoris and compared them with those observed in the hemipenis of Ophiodes cf. fragilis. We analysed the hemipenes and hemiclitores of four specimens belonging to the Herpetological Collection of the Laboratory of Reptiles at the Federal University of Juiz de Fora, highlighting external morphology and histological characteristics. We observed that the external morphology varied between the structures, such as number of lobes and ornaments; however, both had similar histological characteristics. These data contribute to a better understanding of the taxonomic character of lizards, helping with the taxonomic elucidation of the genus. Wed, 01 Sep 2021 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/168075 2021-09-01T00:00:00Z In some species of Squamata, the hemiclitoris is a structure homologous to the hemipenis, and may be used as a taxonomic character. These structures showed similar morphology in males and females in different species of the group; however, some studies have identified morphological variation among them. In this context, we described for the first time the morphological characteristics of the hemiclitoris and compared them with those observed in the hemipenis of Ophiodes cf. fragilis. We analysed the hemipenes and hemiclitores of four specimens belonging to the Herpetological Collection of the Laboratory of Reptiles at the Federal University of Juiz de Fora, highlighting external morphology and histological characteristics. We observed that the external morphology varied between the structures, such as number of lobes and ornaments; however, both had similar histological characteristics. These data contribute to a better understanding of the taxonomic character of lizards, helping with the taxonomic elucidation of the genus. http://sedici.unlp.edu.ar:80/handle/10915/168074 Comunicacion Cuadernos de Herpetología; vol. 35, no. 2 Studies related to the diet of lizard species are important to learn about their biology. This study aimed to identify the diet of the Ameiva ameiva species. The knowledge of the diet was performed through the analysis of the stomach contents of individuals collected in an area in the municipality of Juína, Mato Grosso state. The stomach contents of 49 A. ameiva individuals were analyzed, and it was possible to observe a diet consisting mainly of individuals of the classes Insecta, Arachnida, and Crustacea. Regarding the Insecta class, the orders with the higher number of individuals were Hymenoptera, Coleoptera, and Hemiptera, respectively, and belonging to 11 families, with Formicidae and Gryllidae being observed, respectively, with higher frequency in feeding. The data obtained from the feed of A. ameiva demonstrate the importance of this species in the ecosystem’s balance because of the range of prey from which it feeds. Wed, 01 Sep 2021 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/168074 2021-09-01T00:00:00Z Studies related to the diet of lizard species are important to learn about their biology. This study aimed to identify the diet of the Ameiva ameiva species. The knowledge of the diet was performed through the analysis of the stomach contents of individuals collected in an area in the municipality of Juína, Mato Grosso state. The stomach contents of 49 A. ameiva individuals were analyzed, and it was possible to observe a diet consisting mainly of individuals of the classes Insecta, Arachnida, and Crustacea. Regarding the Insecta class, the orders with the higher number of individuals were Hymenoptera, Coleoptera, and Hemiptera, respectively, and belonging to 11 families, with Formicidae and Gryllidae being observed, respectively, with higher frequency in feeding. The data obtained from the feed of A. ameiva demonstrate the importance of this species in the ecosystem’s balance because of the range of prey from which it feeds. http://sedici.unlp.edu.ar:80/handle/10915/168073 Comunicacion Cuadernos de Herpetología; vol. 35, no. 2 In this study, we report additional cannibalism and predation events in Tropidurus hispidus and, by reviewing our data with that found in the literature, we quantify the relative importance of vertebrate categories as prey for T. hispidus. In addition, we provide an ethogram for events related to territoriality, courting and copulation. Wed, 01 Sep 2021 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/168073 2021-09-01T00:00:00Z In this study, we report additional cannibalism and predation events in Tropidurus hispidus and, by reviewing our data with that found in the literature, we quantify the relative importance of vertebrate categories as prey for T. hispidus. In addition, we provide an ethogram for events related to territoriality, courting and copulation. http://sedici.unlp.edu.ar:80/handle/10915/168072 Comunicacion Cuadernos de Herpetología; vol. 35, no. 2 Here we report the first description of subjugation of an Amphisbaena cf vermicularis by Micrurus ibiboboca in free life. The snake was sighted with an A. cf vermicularis within the mouth then started to prey it on the hole, diverging from other species from the genus Micrurus, which starts to ingest the prey completely out of the underground. Wed, 01 Sep 2021 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/168072 2021-09-01T00:00:00Z Here we report the first description of subjugation of an Amphisbaena cf vermicularis by Micrurus ibiboboca in free life. The snake was sighted with an A. cf vermicularis within the mouth then started to prey it on the hole, diverging from other species from the genus Micrurus, which starts to ingest the prey completely out of the underground. http://sedici.unlp.edu.ar:80/handle/10915/168046 Articulo Cuadernos de Herpetología; vol. 35, no. 2 Currently, more than 10,700 species of reptiles are known to occur worldwide, of these 842 occur in Brazil. The Iron Quadrangle (IQ) is an important region in southeastern Brazil, in the state of Minas Gerais, due to the intense iron mining activity, its rich and unique biodiversity. However, data available for the reptile fauna are scattered in the literature which make the diversity of this group in the IQ remains poorly known. Here we aimed to characterize the reptile fauna of the IQ, representing the first inventory for the area. We found 128 reptile species occurring in the IQ, which corresponds to 49.23% of the reptile fauna for the state of Minas Gerais, and 15.20% of the Brazilian reptile biodiversity. Among these, three species are included in at least one national or international red-list category, four have their type-locality inside the limits of the IQ, seven had not been previously documented for the area, and four have their range extensions to be included in the IQ.; Atualmente, existem mais de 10.700 espécies de répteis descritas no mundo, das quais 842 ocorrem no Brasil. O Quadrilátero Ferrífero (QF) é uma importante região localizada no estado de Minas Gerais, sudeste do Brasil, devido à intensa atividade de mineração de ferro e à rica e única biodiversidade. No entanto, sua fauna de répteis permanece pouco conhecida. O objetivo deste estudo foi caracterizar a fauna de répteis do QF, representando o primeiro inventário para a área. O presente estudo encontrou 128 espécies de répteis para o QF, o que corresponde a 49,23% da fauna de répteis do estado de Minas Gerais e 15,20% da biodiversidade de répteis brasileiros. Entre essas, três espécies estão incluídas em pelo menos uma categoria de Lista Vermelha nacional ou internacional, quatro possuem localidade tipo no QF e quatro apresentam extensões de ocorrência no QF. Wed, 01 Sep 2021 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/168046 2021-09-01T00:00:00Z Currently, more than 10,700 species of reptiles are known to occur worldwide, of these 842 occur in Brazil. The Iron Quadrangle (IQ) is an important region in southeastern Brazil, in the state of Minas Gerais, due to the intense iron mining activity, its rich and unique biodiversity. However, data available for the reptile fauna are scattered in the literature which make the diversity of this group in the IQ remains poorly known. Here we aimed to characterize the reptile fauna of the IQ, representing the first inventory for the area. We found 128 reptile species occurring in the IQ, which corresponds to 49.23% of the reptile fauna for the state of Minas Gerais, and 15.20% of the Brazilian reptile biodiversity. Among these, three species are included in at least one national or international red-list category, four have their type-locality inside the limits of the IQ, seven had not been previously documented for the area, and four have their range extensions to be included in the IQ. Atualmente, existem mais de 10.700 espécies de répteis descritas no mundo, das quais 842 ocorrem no Brasil. O Quadrilátero Ferrífero (QF) é uma importante região localizada no estado de Minas Gerais, sudeste do Brasil, devido à intensa atividade de mineração de ferro e à rica e única biodiversidade. No entanto, sua fauna de répteis permanece pouco conhecida. O objetivo deste estudo foi caracterizar a fauna de répteis do QF, representando o primeiro inventário para a área. O presente estudo encontrou 128 espécies de répteis para o QF, o que corresponde a 49,23% da fauna de répteis do estado de Minas Gerais e 15,20% da biodiversidade de répteis brasileiros. Entre essas, três espécies estão incluídas em pelo menos uma categoria de Lista Vermelha nacional ou internacional, quatro possuem localidade tipo no QF e quatro apresentam extensões de ocorrência no QF. http://sedici.unlp.edu.ar:80/handle/10915/168045 Articulo Cuadernos de Herpetología; vol. 35, no. 2 São poucos os trabalhos sobre rastreamento de serpentes e esse número torna-se ainda mais reduzido quando se trata da Mata Atlântica no Brasil. Existem relativamente poucas metodologias para se realizar esses estudos e grande parte dos pesquisadores recorrem à radiotelemetria quando possível. Neste trabalho utilizamos o pó fluorescente em serpentes, vislumbrando estudos sobre deslocamento, ocupação e área de uso, bem como comparamos a técnica quanto aos pontos positivos e negativos com outros métodos. Foram acompanhados 16 indivíduos de nove espécies, em coletas ocorridas bimestralmente entre 2016 e 2017, em um fragmento urbano de mata atlântica no Parque Estadual de Dois Irmãos, no nordeste do Brasil. O rastreamento resultou em uma área percorrida de até 23 m, na qual as espécies terrestres tiveram seus rastros mais facilmente identificados. A umidade do ar e a heterogeneidade do ambiente florestado parecem ser as principais causas da perda dos rastros em floresta. O pó fluorescente é um método de baixo custo e não invasivo que fornece detalhes do deslocamento das serpentes, todavia é limitado quanto à durabilidade dos rastros.; There are few studies on snake tracking and this number is even lower when it comes to the Atlantic Rain Forest in Brazil. There are relatively few methodologies for carrying out these studies and most researchers use radio telemetry when possible. In this work we use the fluorescent powder in snakes, glimpsing studies on displacement, occupation and area of , as well as comparing the technique in terms of positive and negative points with other methods. 16 individuals of nine species were monitored in captures that took place bimonthly between 2016 and 2017, in an urban fragment of Atlantic rain forest in the Parque Estadual Dois Irmãos in northeastern Brazil. The tracking resulted in an area covered up to 23 m, in which terrestrial species had their tracks more easily identified, as was the case of Xenodon rabdocephalus. The humidity of the air, the heterogeneity of the forested environment seems to be the main obstacles to the loss of trails. The fluorescent powder is an affordable not invasive method that provides details of displacement, however is limited in terms of durability of the traces. Wed, 01 Sep 2021 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/168045 2021-09-01T00:00:00Z São poucos os trabalhos sobre rastreamento de serpentes e esse número torna-se ainda mais reduzido quando se trata da Mata Atlântica no Brasil. Existem relativamente poucas metodologias para se realizar esses estudos e grande parte dos pesquisadores recorrem à radiotelemetria quando possível. Neste trabalho utilizamos o pó fluorescente em serpentes, vislumbrando estudos sobre deslocamento, ocupação e área de uso, bem como comparamos a técnica quanto aos pontos positivos e negativos com outros métodos. Foram acompanhados 16 indivíduos de nove espécies, em coletas ocorridas bimestralmente entre 2016 e 2017, em um fragmento urbano de mata atlântica no Parque Estadual de Dois Irmãos, no nordeste do Brasil. O rastreamento resultou em uma área percorrida de até 23 m, na qual as espécies terrestres tiveram seus rastros mais facilmente identificados. A umidade do ar e a heterogeneidade do ambiente florestado parecem ser as principais causas da perda dos rastros em floresta. O pó fluorescente é um método de baixo custo e não invasivo que fornece detalhes do deslocamento das serpentes, todavia é limitado quanto à durabilidade dos rastros. There are few studies on snake tracking and this number is even lower when it comes to the Atlantic Rain Forest in Brazil. There are relatively few methodologies for carrying out these studies and most researchers use radio telemetry when possible. In this work we use the fluorescent powder in snakes, glimpsing studies on displacement, occupation and area of , as well as comparing the technique in terms of positive and negative points with other methods. 16 individuals of nine species were monitored in captures that took place bimonthly between 2016 and 2017, in an urban fragment of Atlantic rain forest in the Parque Estadual Dois Irmãos in northeastern Brazil. The tracking resulted in an area covered up to 23 m, in which terrestrial species had their tracks more easily identified, as was the case of Xenodon rabdocephalus. The humidity of the air, the heterogeneity of the forested environment seems to be the main obstacles to the loss of trails. The fluorescent powder is an affordable not invasive method that provides details of displacement, however is limited in terms of durability of the traces. http://sedici.unlp.edu.ar:80/handle/10915/168044 Articulo Cuadernos de Herpetología; vol. 35, no. 2 In this study, we provide new data about the foraging behavior and feeding ecology of Phyllopezus periosus, a large-sized gecko endemic from the semiarid Caatinga, northeastern Brazil, looking to answer the following questions: (1) how is the foraging mode of P. periosus? (2) Which types of prey compose its diet? (3) Are lizards selective in diet? (4) Is prey size correlated with lizard body size? The fieldwork consisted of two ten-day excursions during the dry season in the Seridó Ecological Station, state of Rio Grande do Norte. We registered foraging behavior with a voice recorder and determined movement patterns of each focal lizard. For dietary data, we used stomach flushing to obtain consumed prey items. Prey availability was estimated with sets of pitfall traps placed in the surroundings of rocky outcrops where lizards occur. Our results indicate that P. periosus is a typical sit-and-wait forager, spending most of the time immobile (proportion time moving: 1.7 ± 1.9%, number of moves per minute: 0.4 ± 0.3) and performing mainly head moves and postural adjustments. The diet was massively composed of beetles, present in 48.4% of stomachs, representing 44.4% of total prey items and 63.5% of total volume. Lizards consumed beetles in a proportion slightly higher than their proportional availability in the environment, suggesting some preference for this prey category. Males and females presented similar body sizes and did not differ in diet composition. Body size was correlated with maximum prey size, but not with minimum prey size, suggesting that lizards in this population add larger prey items to the diet while growing, but at the same time continue consuming smaller ones. In addition, records of predation upon sympatric lizards and tree sap foraging evidence that P. periosus has opportunistic feeding habits. Wed, 01 Sep 2021 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/168044 2021-09-01T00:00:00Z In this study, we provide new data about the foraging behavior and feeding ecology of Phyllopezus periosus, a large-sized gecko endemic from the semiarid Caatinga, northeastern Brazil, looking to answer the following questions: (1) how is the foraging mode of P. periosus? (2) Which types of prey compose its diet? (3) Are lizards selective in diet? (4) Is prey size correlated with lizard body size? The fieldwork consisted of two ten-day excursions during the dry season in the Seridó Ecological Station, state of Rio Grande do Norte. We registered foraging behavior with a voice recorder and determined movement patterns of each focal lizard. For dietary data, we used stomach flushing to obtain consumed prey items. Prey availability was estimated with sets of pitfall traps placed in the surroundings of rocky outcrops where lizards occur. Our results indicate that P. periosus is a typical sit-and-wait forager, spending most of the time immobile (proportion time moving: 1.7 ± 1.9%, number of moves per minute: 0.4 ± 0.3) and performing mainly head moves and postural adjustments. The diet was massively composed of beetles, present in 48.4% of stomachs, representing 44.4% of total prey items and 63.5% of total volume. Lizards consumed beetles in a proportion slightly higher than their proportional availability in the environment, suggesting some preference for this prey category. Males and females presented similar body sizes and did not differ in diet composition. Body size was correlated with maximum prey size, but not with minimum prey size, suggesting that lizards in this population add larger prey items to the diet while growing, but at the same time continue consuming smaller ones. In addition, records of predation upon sympatric lizards and tree sap foraging evidence that P. periosus has opportunistic feeding habits. http://sedici.unlp.edu.ar:80/handle/10915/168043 Articulo Cuadernos de Herpetología; vol. 35, no. 2 Sea turtles are one the most threatened group worldwide mainly due to environmental disturbances caused by anthropogenic actions. Herein, we aimed to investigate the breeding success of hawksbill turtles in two beaches of Piauí state, contained within the Delta do Parnaíba Environmental Protection Area. Turtle nests were monitored according to the methodology proposed by Projeto TAMAR-ICMBio. A multi-model inference approach using Akaike’s Information Criterion (AICc) obtained through the Generalized linear models (GLM) was used to investigate what are the best predictors of hawksbill turtles’ breeding success. We observed that vegetation distance is the main driver of its breeding success (each nest survival rate), reinforcing the needed to preserve the natural vegetation cover existing in coastal environments. With our constant monitoring of nests avoiding predatory attacks, it was allowed the protection of almost four thousand eggs and the consequent liberation of more than three thousand live hatchlings. Therefore, we think that studies, as presented here, are important for the maintenance and conservation of marine turtle populations and, in particular, to subsidize the protection and conservation of hawksbill turtles in the Parnaíba River Delta. Wed, 01 Sep 2021 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/168043 2021-09-01T00:00:00Z Sea turtles are one the most threatened group worldwide mainly due to environmental disturbances caused by anthropogenic actions. Herein, we aimed to investigate the breeding success of hawksbill turtles in two beaches of Piauí state, contained within the Delta do Parnaíba Environmental Protection Area. Turtle nests were monitored according to the methodology proposed by Projeto TAMAR-ICMBio. A multi-model inference approach using Akaike’s Information Criterion (AICc) obtained through the Generalized linear models (GLM) was used to investigate what are the best predictors of hawksbill turtles’ breeding success. We observed that vegetation distance is the main driver of its breeding success (each nest survival rate), reinforcing the needed to preserve the natural vegetation cover existing in coastal environments. With our constant monitoring of nests avoiding predatory attacks, it was allowed the protection of almost four thousand eggs and the consequent liberation of more than three thousand live hatchlings. Therefore, we think that studies, as presented here, are important for the maintenance and conservation of marine turtle populations and, in particular, to subsidize the protection and conservation of hawksbill turtles in the Parnaíba River Delta. http://sedici.unlp.edu.ar:80/handle/10915/168042 Articulo Dieta de dos especies simpátricas del grupo Leptodactylus fuscus: Leptodactylus longirostris (Boulenger, 1882) y Leptodactylus mystaceus (Spix, 1824) en la selva amazónica brasileña Cuadernos de Herpetología; vol. 35, no. 2 Leptodactylus longirostris and L. mystaceus are sympatric species of frogs occurring in the Amazon basin in forest areas. In this study, diet composition, niche overlap and niche breadth were described for the two of species from the north domain of the Brazilian Amazon forest. A total of 68 individuals of L. longirostris and 43 individuals of L. mystaceus were analyzed. The most important prey for L. longirostris was Hymenoptera (Formicidae) and for L. mystaceus was Coleoptera. The niche breadth of L. mystaceus was wider than the another species. The value of the niche breadth (B≤0.50) of both sympatric frogs suggests a specialization on ants (Formicidae) and beetles (Coleoptera).; Leptodactylus longirostris y L. mystaceus son especies simpátricas de ranas que se encuentran en la cuenca del Amazonas en áreas forestales. En este estudio, se describió la composición de la dieta, la superposición de nichos y la amplitud de nichos para las dos especies del dominio norte de la selva amazónica brasileña. Se analizaron un total de 68 individuos de L. longirostris y 43 individuos de L. mystaceus. La presa más importante para L. longirostris fue Hymenoptera (Formicidae) y para L. mystaceus fue Coleoptera. La amplitud del nicho de L. mystaceus era más amplia que la de la otra especie. El valor de la amplitud del nicho (B ≤0.50) de ambas ranas simpátricas sugiere una especialización en hormigas (Formicidae) y coleópteros (Coleoptera). Wed, 01 Sep 2021 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/168042 2021-09-01T00:00:00Z Leptodactylus longirostris and L. mystaceus are sympatric species of frogs occurring in the Amazon basin in forest areas. In this study, diet composition, niche overlap and niche breadth were described for the two of species from the north domain of the Brazilian Amazon forest. A total of 68 individuals of L. longirostris and 43 individuals of L. mystaceus were analyzed. The most important prey for L. longirostris was Hymenoptera (Formicidae) and for L. mystaceus was Coleoptera. The niche breadth of L. mystaceus was wider than the another species. The value of the niche breadth (B≤0.50) of both sympatric frogs suggests a specialization on ants (Formicidae) and beetles (Coleoptera). Leptodactylus longirostris y L. mystaceus son especies simpátricas de ranas que se encuentran en la cuenca del Amazonas en áreas forestales. En este estudio, se describió la composición de la dieta, la superposición de nichos y la amplitud de nichos para las dos especies del dominio norte de la selva amazónica brasileña. Se analizaron un total de 68 individuos de L. longirostris y 43 individuos de L. mystaceus. La presa más importante para L. longirostris fue Hymenoptera (Formicidae) y para L. mystaceus fue Coleoptera. La amplitud del nicho de L. mystaceus era más amplia que la de la otra especie. El valor de la amplitud del nicho (B ≤0.50) de ambas ranas simpátricas sugiere una especialización en hormigas (Formicidae) y coleópteros (Coleoptera). http://sedici.unlp.edu.ar:80/handle/10915/168041 Articulo Cuadernos de Herpetología; vol. 35, no. 2 We present information about a snake community in a preserved forest in central Amazonia and describe the composition, habitat use, daily activity, diet, and reproduction. The study area is mainly in the municipality of Itaituba in Parque Nacional da Amazônia, state of Pará, Brazil. We set up 26 plots along of a 135 km on a stretch of the BR-230 highway. We used three quantifiable capture methods: Time Constrained Visual Search (TCS), Road Search by Car (RS) and Pitfall Traps with drift fence (PTS). We also recorded all snakes eventually found by the team outside the collection protocol (occasional encounters) and those obtained by other people (third-party encounters). Reproductive (sexual dimorphism, reproductive maturity, recruitment, and fecundity), and feeding biology (diet composition and frequency of food items) are presented. We recorded 61 species from 38 genera and seven families. Imantodes cenchoa, Helicops angulatus, and Bothrops atrox were the most abundant species. Most species have terrestrial habits and nocturnal activity. The most consumed prey was lizards and frogs. Observing the number of specimens distributed monthly, we noted that most specimens with eggs and embryos were recorded in the dry season, while births occurred throughout the year. Compared to some snake communities located south and north of the Amazon River, the snake community of Parque Nacional da Amazônia has high species diversity, resulting from the presence of different lineages as well as different functional groups, which reflect past and present events that have occurred in this region. Wed, 01 Sep 2021 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/168041 2021-09-01T00:00:00Z We present information about a snake community in a preserved forest in central Amazonia and describe the composition, habitat use, daily activity, diet, and reproduction. The study area is mainly in the municipality of Itaituba in Parque Nacional da Amazônia, state of Pará, Brazil. We set up 26 plots along of a 135 km on a stretch of the BR-230 highway. We used three quantifiable capture methods: Time Constrained Visual Search (TCS), Road Search by Car (RS) and Pitfall Traps with drift fence (PTS). We also recorded all snakes eventually found by the team outside the collection protocol (occasional encounters) and those obtained by other people (third-party encounters). Reproductive (sexual dimorphism, reproductive maturity, recruitment, and fecundity), and feeding biology (diet composition and frequency of food items) are presented. We recorded 61 species from 38 genera and seven families. Imantodes cenchoa, Helicops angulatus, and Bothrops atrox were the most abundant species. Most species have terrestrial habits and nocturnal activity. The most consumed prey was lizards and frogs. Observing the number of specimens distributed monthly, we noted that most specimens with eggs and embryos were recorded in the dry season, while births occurred throughout the year. Compared to some snake communities located south and north of the Amazon River, the snake community of Parque Nacional da Amazônia has high species diversity, resulting from the presence of different lineages as well as different functional groups, which reflect past and present events that have occurred in this region. http://sedici.unlp.edu.ar:80/handle/10915/168040 Articulo Cuadernos de Herpetología; vol. 35, no. 2 We studied a population of Tropidurus hygomi in an area of geographic disjunction located in Brazil’s Northeast, investigating how individuals use the microhabitats, what is their daily activity in different seasons, how does growth and mass gain occur and what is the sex ratio, besides analyzing the population dynamics and the recruitment period. We collected data patch between January and December 2008 from 6:00 to 18:00 h combining active search techniques, pitfall traps and markings on animals. We observed lizards mainly on sunny days, motionless on the sand near bushes that formed sun and shade mosaic. Sit-and-wait foraging and preference for adequate light supply are conservative behaviors for Tropidurus. The sand allows to quickly achieve optimal thermal conditions. The lizards presented extended activities, with some seasonal differences, but with a more uniformity compared to congeners in other biomes demonstrating influence of local characteristics. We observe sexual dimorphism with larger and heavier males. Distinctions in growth were noticeable between males, females and juveniles (historical influence) but not for mass gain. Sex ratio was displaced in favor of males. This is not common in the genus but could be advantageous for females in choosing better partners. There were fluctuations in population growth, probably related to climate seasonality and mortality in the juvenile phases. Tropidurus hygomi recruitment begins in the rainy season and continues until the beginning of the dry season, unlike other congeners, suggesting the action of ecological effects. We hope that our results will assist in the development of conservation strategies for the populations of T. hygomi that live on the coast (continuous distribution), besides to guiding the execution of new studies.; Nós estudamos uma população de Tropidurus hygomi em uma área de disjunção geográfica localizada no Nordeste brasileiro investigando como os indivíduos utilizam os microhabitats, como é a atividade diária nas diferentes estações do ano, de que maneira ocorre o crescimento e o ganho de massa e qual a razão sexual, além de analisar a dinâmica populacional e o período de recrutamento. Coletamos dados entre janeiro e dezembro de 2008 das 6:00 às 18:00 h, combinando técnicas de busca ativa, armadilhas de queda e marcações nos animais. Observamos lagartos principalmente em dias ensolarados, imóveis próximos a arbustos na areia em mosaico de sol e sombra. O tipo de forrageio senta-e-espera e a preferência por suprimento adequado de luz são comportamentos conservativos para Tropidurus. A areia permite atingir rapidamente a condição térmica ótima. Os lagartos apresentaram atividades prolongadas, com algumas diferenças sazonais, mas com padrão mais uniforme em comparação com congêneres de outros biomas, demonstrando influência de características locais. Observamos dimorfismo sexual, com machos maiores e mais pesados. As distinções no crescimento foram perceptíveis entre machos, fêmeas e juvenis (influência histórica), mas não para o ganho de massa. A razão sexual foi deslocada em favor dos machos. Isso não é comum no gênero, mas pode ser vantajoso para as fêmeas na escolha de melhores parceiros. Ocorreram flutuações no crescimento populacional, provavelmente relacionadas à sazonalidade climática e mortalidade nas fases juvenis. O recrutamento de Tropidurus hygomi começa no período chuvoso e adentra o início da estação seca, diferente de outros congêneres, sugerindo ação de efeitos ecológicos. Esperamos que nossos resultados auxiliem no desenvolvimento de estratégias de conservação para as populações de T. hygomi que vivem no litoral (distribuição contínua), além de nortear a execução de novos estudos. Wed, 01 Sep 2021 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/168040 2021-09-01T00:00:00Z We studied a population of Tropidurus hygomi in an area of geographic disjunction located in Brazil’s Northeast, investigating how individuals use the microhabitats, what is their daily activity in different seasons, how does growth and mass gain occur and what is the sex ratio, besides analyzing the population dynamics and the recruitment period. We collected data patch between January and December 2008 from 6:00 to 18:00 h combining active search techniques, pitfall traps and markings on animals. We observed lizards mainly on sunny days, motionless on the sand near bushes that formed sun and shade mosaic. Sit-and-wait foraging and preference for adequate light supply are conservative behaviors for Tropidurus. The sand allows to quickly achieve optimal thermal conditions. The lizards presented extended activities, with some seasonal differences, but with a more uniformity compared to congeners in other biomes demonstrating influence of local characteristics. We observe sexual dimorphism with larger and heavier males. Distinctions in growth were noticeable between males, females and juveniles (historical influence) but not for mass gain. Sex ratio was displaced in favor of males. This is not common in the genus but could be advantageous for females in choosing better partners. There were fluctuations in population growth, probably related to climate seasonality and mortality in the juvenile phases. Tropidurus hygomi recruitment begins in the rainy season and continues until the beginning of the dry season, unlike other congeners, suggesting the action of ecological effects. We hope that our results will assist in the development of conservation strategies for the populations of T. hygomi that live on the coast (continuous distribution), besides to guiding the execution of new studies. Nós estudamos uma população de Tropidurus hygomi em uma área de disjunção geográfica localizada no Nordeste brasileiro investigando como os indivíduos utilizam os microhabitats, como é a atividade diária nas diferentes estações do ano, de que maneira ocorre o crescimento e o ganho de massa e qual a razão sexual, além de analisar a dinâmica populacional e o período de recrutamento. Coletamos dados entre janeiro e dezembro de 2008 das 6:00 às 18:00 h, combinando técnicas de busca ativa, armadilhas de queda e marcações nos animais. Observamos lagartos principalmente em dias ensolarados, imóveis próximos a arbustos na areia em mosaico de sol e sombra. O tipo de forrageio senta-e-espera e a preferência por suprimento adequado de luz são comportamentos conservativos para Tropidurus. A areia permite atingir rapidamente a condição térmica ótima. Os lagartos apresentaram atividades prolongadas, com algumas diferenças sazonais, mas com padrão mais uniforme em comparação com congêneres de outros biomas, demonstrando influência de características locais. Observamos dimorfismo sexual, com machos maiores e mais pesados. As distinções no crescimento foram perceptíveis entre machos, fêmeas e juvenis (influência histórica), mas não para o ganho de massa. A razão sexual foi deslocada em favor dos machos. Isso não é comum no gênero, mas pode ser vantajoso para as fêmeas na escolha de melhores parceiros. Ocorreram flutuações no crescimento populacional, provavelmente relacionadas à sazonalidade climática e mortalidade nas fases juvenis. O recrutamento de Tropidurus hygomi começa no período chuvoso e adentra o início da estação seca, diferente de outros congêneres, sugerindo ação de efeitos ecológicos. Esperamos que nossos resultados auxiliem no desenvolvimento de estratégias de conservação para as populações de T. hygomi que vivem no litoral (distribuição contínua), além de nortear a execução de novos estudos.