http://sedici.unlp.edu.ar:80/handle/10915/159822 2026-10-10T05:38:07Z 2026-10-10T05:38:07Z Asociación Herpetológica Argentina http://sedici.unlp.edu.ar:80/handle/10915/159877 2023-11-07T20:02:22Z 2023-09-01T00:00:00Z

Edicion de revista Cuadernos de Herpetología; vol. 37, no. 2 Trabajos: - Description of a new species of the Liolaemus elongatus group (Squamata: Iguania) through integrative taxonomy | Soledad Ruiz, Pablo Chafrat, Matías Quipildor, Soledad Valdecantos, Fernando Lobo - New morphology data and geographic distribution expansion of Leposternon mineiro Ribeiro, Silveira & Santos-Jr, 2018 (Squamata, Amphisbaenia, Amphisbaenidae) | Jady Pimenta Eleutério, Alfredo P. Santos-Jr, Wilian Vaz-Silva, and Síria Ribeiro - Estudios acústicos en poblaciones argentinas de Leptodactylus (Anura, Leptodactylidae): revisión histórica y datos adicionales | Víctor Hugo Zaracho, Fernanda Natalia Abreliano, Daniel Espínola Ocampo, Ariovaldo Antonio Giaretta - Ecologia térmica de anuros da Caatinga, Nordeste do Brasil | Larissa Carvalho Ferreira, Geane Limeira da Silva, Leonardo Barros Ribeiro - Body Size, Age and Growth Pattern of the most represented anurans in Inselbergs of northeastern Argentina | Jose Miguel Piñeiro, Rodrigo Cajade, Federico Marangoni - Composition, richness, abundance, and association of anuran fauna with the flooded habitats in the Ariri district, eastern Amazon | Juliana Gonçalves Corrêa, Pedro Ferreira França, Jackson Cleiton Sousa, Carlos Eduardo Costa-Campos Notas: - Comparing leaf litter anuran diversity in two habitats of an Atlantic Forest area in Rio de Janeiro State, Southeastern Brazil | Felipe B. S. Telles, Catia M. Militão, Carla C. Siqueira, Davor Vrcibradic, Carlos Frederico D. Rocha - Análisis morfológico de un caso de polimelia en Rhinella dorbignyi (Anura: Bufonidae) | Federico L. Oser, Jesica A. Sansiñena, Leandro Alcalde, Guillermo S. Natale Novedades zoogeográficas: -Primeros registros de Cercosaura parkeri (Ruibal, 1952) (Sauria, Gymnophthalmidae) en la ecorregión Chaco Seco de Argentina | María Esther Tedesco, Víctor Hugo Zaracho, Miguel Antonio Regnet, José Luis Acosta, Leonardo Dionel Aguiar, Eduardo Gabriel Etchepare, José Augusto Ruiz García, Roberto Hugo Aguirre, Daniel Alberto Lencina, Daniel Espínola Ocampo - New records and distribution extension of Acanthochelys macrocephala (Rhodin, Mittermeier & McMorris 1984) in midwestern Brazil | Tainá Figueras Dorado-Rodrigues, Elizângela Silva Brito, Karoline Rodrigues Silva, Rafael Martins Valadão, Fábio Andrew Gomes Cunha, Christine Strüssmann

2023-09-01T00:00:00Z Trabajos: - Description of a new species of the Liolaemus elongatus group (Squamata: Iguania) through integrative taxonomy | Soledad Ruiz, Pablo Chafrat, Matías Quipildor, Soledad Valdecantos, Fernando Lobo - New morphology data and geographic distribution expansion of Leposternon mineiro Ribeiro, Silveira & Santos-Jr, 2018 (Squamata, Amphisbaenia, Amphisbaenidae) | Jady Pimenta Eleutério, Alfredo P. Santos-Jr, Wilian Vaz-Silva, and Síria Ribeiro - Estudios acústicos en poblaciones argentinas de Leptodactylus (Anura, Leptodactylidae): revisión histórica y datos adicionales | Víctor Hugo Zaracho, Fernanda Natalia Abreliano, Daniel Espínola Ocampo, Ariovaldo Antonio Giaretta - Ecologia térmica de anuros da Caatinga, Nordeste do Brasil | Larissa Carvalho Ferreira, Geane Limeira da Silva, Leonardo Barros Ribeiro - Body Size, Age and Growth Pattern of the most represented anurans in Inselbergs of northeastern Argentina | Jose Miguel Piñeiro, Rodrigo Cajade, Federico Marangoni - Composition, richness, abundance, and association of anuran fauna with the flooded habitats in the Ariri district, eastern Amazon | Juliana Gonçalves Corrêa, Pedro Ferreira França, Jackson Cleiton Sousa, Carlos Eduardo Costa-Campos Notas: - Comparing leaf litter anuran diversity in two habitats of an Atlantic Forest area in Rio de Janeiro State, Southeastern Brazil | Felipe B. S. Telles, Catia M. Militão, Carla C. Siqueira, Davor Vrcibradic, Carlos Frederico D. Rocha - Análisis morfológico de un caso de polimelia en Rhinella dorbignyi (Anura: Bufonidae) | Federico L. Oser, Jesica A. Sansiñena, Leandro Alcalde, Guillermo S. Natale Novedades zoogeográficas: -Primeros registros de Cercosaura parkeri (Ruibal, 1952) (Sauria, Gymnophthalmidae) en la ecorregión Chaco Seco de Argentina | María Esther Tedesco, Víctor Hugo Zaracho, Miguel Antonio Regnet, José Luis Acosta, Leonardo Dionel Aguiar, Eduardo Gabriel Etchepare, José Augusto Ruiz García, Roberto Hugo Aguirre, Daniel Alberto Lencina, Daniel Espínola Ocampo - New records and distribution extension of Acanthochelys macrocephala (Rhodin, Mittermeier & McMorris 1984) in midwestern Brazil | Tainá Figueras Dorado-Rodrigues, Elizângela Silva Brito, Karoline Rodrigues Silva, Rafael Martins Valadão, Fábio Andrew Gomes Cunha, Christine Strüssmann Figueras Dorado-Rodrigues, Tainá Silva Brito, Elizângela Rodrigues Silva, Karoline Martins Valadão, Rafael Gomes Cunha, Fábio Andrew Strüssmann, Christine http://sedici.unlp.edu.ar:80/handle/10915/159876 2023-11-07T20:02:23Z 2023-09-01T00:00:00Z

Comunicacion Cuadernos de Herpetología; vol. 37, no. 2 The big-headed Pantanal swamp turtle Acanthochelys macrocephala (Rhodin, Mittermeier & McMorris, 1984) is a rare and poorly studied medium-sized freshwater turtle (Rhodin et al., 2021), whose individuals can explore a wide variety of habitat types. Acanthochelys macrocephala has a geographical distribution restricted to central South America. In Brazil, records are restricted to the Upper Paraguay river basin, throughout the Pantanal wetlands or nearby Chaco areas. These records were limited until now to four municipalities of Mato Grosso do Sul and two municipalities of Mato Grosso. Some of the records we provided here constitute the first occurrence of the species for the municipalities of Barão de Melgaço, Nossa Senhora do Livramento, Cuiabá, and Acorizal, and increase from two to six the number of municipalities where the species is currently known in Mato Grosso (previously known for Poconé and Cáceres - the latter being the species type locality).

2023-09-01T00:00:00Z The big-headed Pantanal swamp turtle Acanthochelys macrocephala (Rhodin, Mittermeier & McMorris, 1984) is a rare and poorly studied medium-sized freshwater turtle (Rhodin et al., 2021), whose individuals can explore a wide variety of habitat types. Acanthochelys macrocephala has a geographical distribution restricted to central South America. In Brazil, records are restricted to the Upper Paraguay river basin, throughout the Pantanal wetlands or nearby Chaco areas. These records were limited until now to four municipalities of Mato Grosso do Sul and two municipalities of Mato Grosso. Some of the records we provided here constitute the first occurrence of the species for the municipalities of Barão de Melgaço, Nossa Senhora do Livramento, Cuiabá, and Acorizal, and increase from two to six the number of municipalities where the species is currently known in Mato Grosso (previously known for Poconé and Cáceres - the latter being the species type locality). Tedesco, María Esther Zaracho, Víctor Hugo Regnet, Miguel Antonio Acosta, José Luis Aguiar, Leonardo Dionel Etchepare, Eduardo G. Ruiz García, José Augusto Aguirre, Roberto Hugo Lencina, Daniel Alberto Espínola Ocampo, Daniel http://sedici.unlp.edu.ar:80/handle/10915/159875 2023-11-07T20:02:25Z 2023-09-01T00:00:00Z

Comunicacion Cuadernos de Herpetología; vol. 37, no. 2 En este trabajo se da a conocer la presencia de C. parkeri para las provincias de Chaco, Formosa y Santa Fe, y confirmamos su presencia para Santiago del Estero con material de referencia. Las nuevas localidades amplían el rango de distribución de la especie hacia el Este, en un radio aproximado de 450 km. Además, se destaca la presencia de la especie en ambientes de Argentina con otra morfología geográfica y ecológica, diferente al de Yungas.

2023-09-01T00:00:00Z En este trabajo se da a conocer la presencia de C. parkeri para las provincias de Chaco, Formosa y Santa Fe, y confirmamos su presencia para Santiago del Estero con material de referencia. Las nuevas localidades amplían el rango de distribución de la especie hacia el Este, en un radio aproximado de 450 km. Además, se destaca la presencia de la especie en ambientes de Argentina con otra morfología geográfica y ecológica, diferente al de Yungas. Oser, Federico Sansiñena, Jesica Alejandra Alcalde, Leandro Natale, Guillermo Sebastián http://sedici.unlp.edu.ar:80/handle/10915/159873 2023-11-07T20:02:28Z 2023-09-01T00:00:00Z

Comunicacion Cuadernos de Herpetología; vol. 37, no. 2 Morphological analysis of a polymelia case in Rhinella dorbignyi (Anura: Bufonidae). This note describes the morphology of a supernumerary left hind limb in an adult female of Rhinella dorbignyi found in Atalaya (Magdalena, Buenos Aires). The case was studied through radiographs of the specimen in life, and once dead, the morphological approach included dissection to observe the appendicular muscles and diaphanization with double staining to observe the skeleton. The notable features of the supernumerary limb are: (1) absence of finger I, (2) shorter length of all portions of the limb and less robustness than in a normal hind limb, (3) anomalous junction with the pelvic girdle by means of a well marked femoral head with limb-type features associated to bipedal gait, (4) femur without muscles, and (5) tibia and fibula completely fused in midline. In short, the supernumerary limb is a reduced duplication of the left hind limb.; Esta nota describe la morfología de un miembro posterior izquierdo supernumerario en una hembra adulta de Rhinella dorbignyi hallada en Atalaya (Magdalena, Buenos Aires). El caso se estudió mediante radiografías del ejemplar vivo, y una vez muerto, se realizó un abordaje morfológico que incluyó disección para observación de musculatura apendicular y diafanización con doble tinción para observar los rasgos esqueléticos. Se destaca del miembro supernumerario: (1) ausencia de dedo I, (2) menor longitud de todas las porciones del miembro y menor robustez que en un miembro posterior normal, (3) unión anómala con la cintura pélvica mediante una cabeza femoral bien marcada con las características de miembros asociados a marcha bípeda, (4) fémur sin músculos y, (5) tibia y fíbula completamente fusionados en la línea media. En definitiva, el miembro supernumerario es una duplicación, reducida, del miembro posterior izquierdo.

2023-09-01T00:00:00Z Morphological analysis of a polymelia case in Rhinella dorbignyi (Anura: Bufonidae). This note describes the morphology of a supernumerary left hind limb in an adult female of Rhinella dorbignyi found in Atalaya (Magdalena, Buenos Aires). The case was studied through radiographs of the specimen in life, and once dead, the morphological approach included dissection to observe the appendicular muscles and diaphanization with double staining to observe the skeleton. The notable features of the supernumerary limb are: (1) absence of finger I, (2) shorter length of all portions of the limb and less robustness than in a normal hind limb, (3) anomalous junction with the pelvic girdle by means of a well marked femoral head with limb-type features associated to bipedal gait, (4) femur without muscles, and (5) tibia and fibula completely fused in midline. In short, the supernumerary limb is a reduced duplication of the left hind limb. Esta nota describe la morfología de un miembro posterior izquierdo supernumerario en una hembra adulta de Rhinella dorbignyi hallada en Atalaya (Magdalena, Buenos Aires). El caso se estudió mediante radiografías del ejemplar vivo, y una vez muerto, se realizó un abordaje morfológico que incluyó disección para observación de musculatura apendicular y diafanización con doble tinción para observar los rasgos esqueléticos. Se destaca del miembro supernumerario: (1) ausencia de dedo I, (2) menor longitud de todas las porciones del miembro y menor robustez que en un miembro posterior normal, (3) unión anómala con la cintura pélvica mediante una cabeza femoral bien marcada con las características de miembros asociados a marcha bípeda, (4) fémur sin músculos y, (5) tibia y fíbula completamente fusionados en la línea media. En definitiva, el miembro supernumerario es una duplicación, reducida, del miembro posterior izquierdo. Telles, Felipe B. S. Militão, Catia M. Siqueira, Carla C. Vrcibradic, Davor Rocha, Carlos Frederico D. http://sedici.unlp.edu.ar:80/handle/10915/159872 2023-11-07T20:02:29Z 2023-09-01T00:00:00Z

Comunicacion Cuadernos de Herpetología; vol. 37, no. 2 We compared species richness, relative abundance, density (ind/100 m2) and biomass per hectare (g/ha) of leaf-litter anurans between forest and restinga habitats in an insular Atlantic Forest area in southeastern Brazil. The local assemblage of leaf litter anurans was composed by nine species (eight of them occurring in the forest and six in the restinga), of which the most abundant were Ischnocnema parva and Adenomera marmorata in the forest, and I. parva and Dendrophryniscus lauroi in the restinga. The estimated local density of leaf-litter anurans was 11.7 ind/100m2 (biomass per hectare = 848.4 g/ha) in forest and 7.3 ind/100m2 in restinga (biomass per hectare = 262.8 g/ha). Anuran species richness, estimated densities and biomass in the restinga were lower than that of the forest, probably due to the less favorable environmental conditions of restingas for amphibians.

2023-09-01T00:00:00Z We compared species richness, relative abundance, density (ind/100 m2) and biomass per hectare (g/ha) of leaf-litter anurans between forest and restinga habitats in an insular Atlantic Forest area in southeastern Brazil. The local assemblage of leaf litter anurans was composed by nine species (eight of them occurring in the forest and six in the restinga), of which the most abundant were Ischnocnema parva and Adenomera marmorata in the forest, and I. parva and Dendrophryniscus lauroi in the restinga. The estimated local density of leaf-litter anurans was 11.7 ind/100m2 (biomass per hectare = 848.4 g/ha) in forest and 7.3 ind/100m2 in restinga (biomass per hectare = 262.8 g/ha). Anuran species richness, estimated densities and biomass in the restinga were lower than that of the forest, probably due to the less favorable environmental conditions of restingas for amphibians. Gonçalves Corrêa, Juliana Ferreira França, Pedro Sousa, Jackson Cleiton Costa- Campos, Carlos Eduardo http://sedici.unlp.edu.ar:80/handle/10915/159871 2023-11-07T20:02:31Z 2023-09-01T00:00:00Z

Articulo Cuadernos de Herpetología; vol. 37, no. 2 Local inventories provide primary key information on diversity and distribution of species for conservation purposes. Here we describe the composition and conservation status of anuran fauna in flooded habitats eastern Amazon and evaluate to preference and the level of association of species with the flooded habitats in a poorly known area of the flooded forest present in the Ariri district, state of Amapá, North Brazil. Four nocturnal sampling events were carried out during the rainy season: beginning of the rainy season (March-May 2014 and December 2014-February 2015), mid rainy season (June-August 2014), and end of rainy season (September-November 2014), using visual encounter survey. We identified 29 anuran species. According to flooded habitat preference, the highest richness of species was found in high várzea (22 species, 75.9%, H’ = 3.091), and 16 species (55.2%) was recorded with high association with flooded habitats. Including all flooded habitats, a greater number of constant species were found, followed by accessory and accidental species. Species accumulation curve showed a tendency toward stabilization of species richness only in the end of rainy season. Our study provides important data on the local anuran fauna and the presence of species typical of flooded and non-flooded habitats demonstrates a certain degree of similarity between species composition, reinforcing the importance of flooded habitats for the preservation of anurans of the Amazonia Forest in north Brazil.

2023-09-01T00:00:00Z Local inventories provide primary key information on diversity and distribution of species for conservation purposes. Here we describe the composition and conservation status of anuran fauna in flooded habitats eastern Amazon and evaluate to preference and the level of association of species with the flooded habitats in a poorly known area of the flooded forest present in the Ariri district, state of Amapá, North Brazil. Four nocturnal sampling events were carried out during the rainy season: beginning of the rainy season (March-May 2014 and December 2014-February 2015), mid rainy season (June-August 2014), and end of rainy season (September-November 2014), using visual encounter survey. We identified 29 anuran species. According to flooded habitat preference, the highest richness of species was found in high várzea (22 species, 75.9%, H’ = 3.091), and 16 species (55.2%) was recorded with high association with flooded habitats. Including all flooded habitats, a greater number of constant species were found, followed by accessory and accidental species. Species accumulation curve showed a tendency toward stabilization of species richness only in the end of rainy season. Our study provides important data on the local anuran fauna and the presence of species typical of flooded and non-flooded habitats demonstrates a certain degree of similarity between species composition, reinforcing the importance of flooded habitats for the preservation of anurans of the Amazonia Forest in north Brazil. Piñeiro, José Miguel Cajade, Rodrigo Marangoni, Federico http://sedici.unlp.edu.ar:80/handle/10915/159870 2023-11-07T20:02:32Z 2023-09-01T00:00:00Z

Articulo Cuadernos de Herpetología; vol. 37, no. 2 The decline of biodiversity is an urgent concern that raises significant alarm today. Several species vanish without their biology being understood, or sometimes, even without awareness of their existence. Due to the significance that the Inselbergs has to biodiversity and nature, as they have been recognized as genuine evolutionary laboratories, they present a unique opportunity to enhance our understanding of biologically unexplored species. Our study presents the first information regarding the body size, age and growth pattern of Scinax fuscovarius, Odontophrynus asper, and Melanophryniscus atroluteus, the three most frequently encountered anuran species in the Inselbergs outcrops of northeastern Argentina. We have demonstrated that the variations in body size cannot be attributed to the effect of the specific hill where the species inhabit. We discovered that sexual dimorphism in age and the analyzed morphological variables is expressed differently in the three examined species. We also demonstrated that the observed differences in body size between populations of M. atroluteus of Inselbergs and the Atlantic Forest of Argentina can be attributed to differences in age at sexual maturity and growth patterns. However, we believe that other proximate mechanisms should be taken into account, such as the effects of the environment and inter- and intra-specific competition experienced during the larval stages, for a better understanding of the population differences in adult body size and age. Our findings will assist in the evaluation of species management and conservation strategies within their habitat.; El declive de la biodiversidad es una preocupación urgente que suscita gran alarma hoy en día. Varias especies desaparecen sin que se comprenda su biología o, a veces, incluso sin que se sepa de su existencia. Debido a la importancia que los Inselbergs tienen para la biodiversidad y la naturaleza, ya que han sido reconocidas como auténticos laboratorios evolutivos, presentan una oportunidad única para mejorar nuestra comprensión de especies biológicamente inexploradas. Nuestro estudio presenta la primera información relativa al tamaño corporal, edad y patrón de crecimiento de Scinax fuscovarius, Odontophrynus asper, and Melanophryniscus atroluteus, las tres especies de anuros más frecuentemente encontradas en los afloramientos de los Inselbergs del noreste de Argentina. Hemos demostrado que las variaciones en el tamaño corporal no pueden atribuirse al efecto del cerro específico donde habitan las especies. Descubrimos que el dimorfismo sexual en edad y en las variables morfológicas analizadas se expresa de manera diferente en las tres especies examinadas. También demostramos que las diferencias observadas en el tamaño corporal entre las poblaciones de M. atroluteus de los Inselbergs y del Bosque Atlántico de Argentina pueden atribuirse a diferencias en la edad a la madurez sexual y en los patrones de crecimiento. Sin embargo, creemos que deben tenerse en cuenta otros mecanismos próximos, como los efectos del ambiente y la competencia inter e intraespecífica experimentada durante las fases larvarias, para comprender mejor las diferencias poblacionales en el tamaño corporal y la edad de los adultos. Nuestros hallazgos ayudarán a evaluar las estrategias de gestión y conservación de las especies dentro de su hábitat.

2023-09-01T00:00:00Z The decline of biodiversity is an urgent concern that raises significant alarm today. Several species vanish without their biology being understood, or sometimes, even without awareness of their existence. Due to the significance that the Inselbergs has to biodiversity and nature, as they have been recognized as genuine evolutionary laboratories, they present a unique opportunity to enhance our understanding of biologically unexplored species. Our study presents the first information regarding the body size, age and growth pattern of Scinax fuscovarius, Odontophrynus asper, and Melanophryniscus atroluteus, the three most frequently encountered anuran species in the Inselbergs outcrops of northeastern Argentina. We have demonstrated that the variations in body size cannot be attributed to the effect of the specific hill where the species inhabit. We discovered that sexual dimorphism in age and the analyzed morphological variables is expressed differently in the three examined species. We also demonstrated that the observed differences in body size between populations of M. atroluteus of Inselbergs and the Atlantic Forest of Argentina can be attributed to differences in age at sexual maturity and growth patterns. However, we believe that other proximate mechanisms should be taken into account, such as the effects of the environment and inter- and intra-specific competition experienced during the larval stages, for a better understanding of the population differences in adult body size and age. Our findings will assist in the evaluation of species management and conservation strategies within their habitat. El declive de la biodiversidad es una preocupación urgente que suscita gran alarma hoy en día. Varias especies desaparecen sin que se comprenda su biología o, a veces, incluso sin que se sepa de su existencia. Debido a la importancia que los Inselbergs tienen para la biodiversidad y la naturaleza, ya que han sido reconocidas como auténticos laboratorios evolutivos, presentan una oportunidad única para mejorar nuestra comprensión de especies biológicamente inexploradas. Nuestro estudio presenta la primera información relativa al tamaño corporal, edad y patrón de crecimiento de Scinax fuscovarius, Odontophrynus asper, and Melanophryniscus atroluteus, las tres especies de anuros más frecuentemente encontradas en los afloramientos de los Inselbergs del noreste de Argentina. Hemos demostrado que las variaciones en el tamaño corporal no pueden atribuirse al efecto del cerro específico donde habitan las especies. Descubrimos que el dimorfismo sexual en edad y en las variables morfológicas analizadas se expresa de manera diferente en las tres especies examinadas. También demostramos que las diferencias observadas en el tamaño corporal entre las poblaciones de M. atroluteus de los Inselbergs y del Bosque Atlántico de Argentina pueden atribuirse a diferencias en la edad a la madurez sexual y en los patrones de crecimiento. Sin embargo, creemos que deben tenerse en cuenta otros mecanismos próximos, como los efectos del ambiente y la competencia inter e intraespecífica experimentada durante las fases larvarias, para comprender mejor las diferencias poblacionales en el tamaño corporal y la edad de los adultos. Nuestros hallazgos ayudarán a evaluar las estrategias de gestión y conservación de las especies dentro de su hábitat. Carvalho Ferreira, Larissa Limeira da Silva, Geane Barros Ribeiro, Leonardo http://sedici.unlp.edu.ar:80/handle/10915/159827 2023-11-06T20:02:41Z 2023-09-01T00:00:00Z

Articulo Cuadernos de Herpetología; vol. 37, no. 2 Thermal ecology of anurans in the Caatinga, Northeastern Brazil. Anurans regulate their body temperature through external heat sources. In this sense, the microhabitat used can influence this physiological process. Thus, the objective of this study was to verify the body temperature of anuran species in the Caatinga domain and to correlate the possible variations to the different microhabitats used. For this, active searches were carried out during the day and night shifts, between August 2019 and May 2021. The frogs were captured manually to measure the cloacal temperature and then released. Substrate and air temperatures were also checked for associations with body temperature. In total, 420 frogs were captured, and the body temperature was obtained from 147 individuals of five species in the rainy season (Leptodactylus macrosternum, Scinax x-signatus, Rhinella granulosa, Rhinella diptycha and Pithecopus gonzagai), and from 273 individuals of four species in the dry season (L. macrosternum, S. x-signatus, R. granulosa and R. diptycha). In general, the highest body temperature averages (28.4-29.3ºC) were observed in the rainy season for L. macrosternum, R. granulosa and R. diptycha. The most preferred microhabitats of anurans were soil and water. Finally, even though an association between body temperature and air temperature was found, substrate temperature proved to be the most important source of thermal regulation for most anuran species investigated.; Os anuros regulam sua temperatura corpórea por meio de fontes externas de calor. Nesse sentido, o micro-hábitat utilizado pode influenciar nesse processo fisiológico. Desta forma, o objetivo deste estudo foi verificar a temperatura corpórea de espécies de anuros no domínio Caatinga e correlacionar as possíveis variações aos diferentes micro-hábitats utilizados. Para isso foram realizadas buscas ativas nos turnos diurno e noturno, entre agosto de 2019 e maio de 2021. Os anuros foram capturados manualmente para aferição da temperatura cloacal e soltos em seguida. As temperaturas do substrato e do ar também foram verificadas para associações com a temperatura corpórea. No total, 420 anuros foram capturados, sendo obtida a temperatura corpórea de 147 indivíduos de cinco espécies no período chuvoso (Leptodactylus macrosternum, Scinax x-signatus, Rhinella granulosa, Rhinella diptycha e Pithecopus gonzagai), e de 273 indivíduos de quatro espécies no período seco (L. macrosternum, S. x-signatus, R. granulosa e R. diptycha). De um modo geral, as maiores médias de temperatura corpórea (28,4−29,3ºC) foram observadas no período chuvoso para L. macrosternum, R. granulosa e R. diptycha. Os microhábitats de maior preferência dos anuros foram o solo e a água. Finalmente, ainda que tenha sido encontrada associação da temperatura corpórea com a temperatura do ar, a temperatura do substrato demonstrou ser a fonte mais importante na regulação térmica para a maioria das espécies de anuros investigadas.

2023-09-01T00:00:00Z Thermal ecology of anurans in the Caatinga, Northeastern Brazil. Anurans regulate their body temperature through external heat sources. In this sense, the microhabitat used can influence this physiological process. Thus, the objective of this study was to verify the body temperature of anuran species in the Caatinga domain and to correlate the possible variations to the different microhabitats used. For this, active searches were carried out during the day and night shifts, between August 2019 and May 2021. The frogs were captured manually to measure the cloacal temperature and then released. Substrate and air temperatures were also checked for associations with body temperature. In total, 420 frogs were captured, and the body temperature was obtained from 147 individuals of five species in the rainy season (Leptodactylus macrosternum, Scinax x-signatus, Rhinella granulosa, Rhinella diptycha and Pithecopus gonzagai), and from 273 individuals of four species in the dry season (L. macrosternum, S. x-signatus, R. granulosa and R. diptycha). In general, the highest body temperature averages (28.4-29.3ºC) were observed in the rainy season for L. macrosternum, R. granulosa and R. diptycha. The most preferred microhabitats of anurans were soil and water. Finally, even though an association between body temperature and air temperature was found, substrate temperature proved to be the most important source of thermal regulation for most anuran species investigated. Os anuros regulam sua temperatura corpórea por meio de fontes externas de calor. Nesse sentido, o micro-hábitat utilizado pode influenciar nesse processo fisiológico. Desta forma, o objetivo deste estudo foi verificar a temperatura corpórea de espécies de anuros no domínio Caatinga e correlacionar as possíveis variações aos diferentes micro-hábitats utilizados. Para isso foram realizadas buscas ativas nos turnos diurno e noturno, entre agosto de 2019 e maio de 2021. Os anuros foram capturados manualmente para aferição da temperatura cloacal e soltos em seguida. As temperaturas do substrato e do ar também foram verificadas para associações com a temperatura corpórea. No total, 420 anuros foram capturados, sendo obtida a temperatura corpórea de 147 indivíduos de cinco espécies no período chuvoso (Leptodactylus macrosternum, Scinax x-signatus, Rhinella granulosa, Rhinella diptycha e Pithecopus gonzagai), e de 273 indivíduos de quatro espécies no período seco (L. macrosternum, S. x-signatus, R. granulosa e R. diptycha). De um modo geral, as maiores médias de temperatura corpórea (28,4−29,3ºC) foram observadas no período chuvoso para L. macrosternum, R. granulosa e R. diptycha. Os microhábitats de maior preferência dos anuros foram o solo e a água. Finalmente, ainda que tenha sido encontrada associação da temperatura corpórea com a temperatura do ar, a temperatura do substrato demonstrou ser a fonte mais importante na regulação térmica para a maioria das espécies de anuros investigadas. Zaracho, Víctor Hugo Abreliano, Fernanda Natalia Espínola Ocampo, Daniel Giaretta, Ariovaldo Antonio http://sedici.unlp.edu.ar:80/handle/10915/159825 2023-11-06T20:02:43Z 2023-09-01T00:00:00Z

Articulo Cuadernos de Herpetología; vol. 37, no. 2 The first systematized acoustic studies in Argentinean anuran populations began in the 1960s with the contributions made by Avelino Barrio. Since then, with some exceptions, the knowledge about the vocalizations of local species has had little development. Leptodactylus is a neotropical frog genus with 83 recognized species, 14 of which are found in Argentina. In this context, and with the aim of contribute to the acoustic knowledge about the anuran species that occur in Argentina, a review of the vocalizations of Leptodactylus species was addressed, with emphasis in local populations. Additionally, this information is compared with new acoustic data for L. bufonius, L. elenae, L. fuscus, L. gracilis, L. laticeps, L. latinasus, L. luctator, L. macrosternum and L. podicipinus obtained in populations from Corrientes, Chaco and San Juan provinces. Moreover, some terms used in previous studies are reviewed in order to standardize the terminology applied to the calls of Leptodactylus species. The absence of descriptions about vocalizations from topotypic populations is also noted, of which L. elenae, L. laticeps, and L. luctator have their type locality in Argentina. Studies on acoustic variation in anuran amphibians, whether for taxonomic or geographic variation purposes, can be considered incipient in Argentina, and therefore, there are still an important information gap. Comparisons of the acoustic variables of the advertisement call between different populations allow us to understand how the acoustic variables vary according to the environmental or geographical factors. Furthermore, the recordings of other types of calls contribute to increase the information about the acoustic repertoires and have a comprehensive knowledge about aspects of the natural history and behavior of the species. Finally, it is important to highlight the need for additional acoustic studies on anuran amphibians from Argentina, especially due to the continuous alteration or loss of their habitats, and consequently of the acoustic diversity and soundscape.; Los primeros estudios acústicos sistematizados en poblaciones argentinas de anuros comenzaron en la década de 1960 con las contribuciones de Avelino Barrio. Desde entonces, con algunas excepciones, el conocimiento acerca de las vocalizaciones de especies locales ha tenido un escaso desarrollo. El género de ranas neotropicales Leptodactylus incluye 83 especies, 14 de ellas presentes en Argentina. En este contexto, y con el fin de relevar los estudios acústicos en representantes de este género, se recopilaron los principales estudios sobre sus vocalizaciones, con énfasis en poblaciones locales. Adicionalmente, se compara esta información con nuevos datos acústicos para L. bufonius, L. elenae, L. fuscus, L. gracilis, L. laticeps, L. latinasus, L. luctator, L. macrosternum y L. podicipinus obtenidos a partir de poblaciones de las provincias de Corrientes, Chaco y San Juan. Complementariamente, se revisan algunos términos utilizados en estudios previos con el fin de estandarizar la terminología aplicada a los cantos de las especies de Leptodactylus, y se identifican, además, aquellas que carecen de descripciones de sus vocalizaciones en poblaciones topotípicas, de las cuales L. elenae, L. laticeps y L. luctator poseen su localidad tipo en Argentina. Los estudios de variación acústica en anfibios anuros, ya sea con fines taxonómicos o de variación geográfica, pueden considerarse incipientes en Argentina, y por lo tanto, existen todavía importantes vacíos de información. La comparación de las variables acústicas de los cantos de advertencia entre diferentes poblaciones permite comprender de qué manera éstas varían en función de los factores ambientales o geográficos. Además, el registro de otros tipos de cantos contribuye a incrementar el conocimiento sobre el reportorio acústico y tener un conocimiento integral sobre aspectos de la historia natural y del comportamiento de las especies. Finalmente, es importante destacar la necesidad de estudios acústicos adicionales en anfibios anuros de Argentina, especialmente debido a la continua alteración o pérdida de sus hábitats y por consiguiente, de la diversidad acústica y del paisaje sonoro.

2023-09-01T00:00:00Z The first systematized acoustic studies in Argentinean anuran populations began in the 1960s with the contributions made by Avelino Barrio. Since then, with some exceptions, the knowledge about the vocalizations of local species has had little development. Leptodactylus is a neotropical frog genus with 83 recognized species, 14 of which are found in Argentina. In this context, and with the aim of contribute to the acoustic knowledge about the anuran species that occur in Argentina, a review of the vocalizations of Leptodactylus species was addressed, with emphasis in local populations. Additionally, this information is compared with new acoustic data for L. bufonius, L. elenae, L. fuscus, L. gracilis, L. laticeps, L. latinasus, L. luctator, L. macrosternum and L. podicipinus obtained in populations from Corrientes, Chaco and San Juan provinces. Moreover, some terms used in previous studies are reviewed in order to standardize the terminology applied to the calls of Leptodactylus species. The absence of descriptions about vocalizations from topotypic populations is also noted, of which L. elenae, L. laticeps, and L. luctator have their type locality in Argentina. Studies on acoustic variation in anuran amphibians, whether for taxonomic or geographic variation purposes, can be considered incipient in Argentina, and therefore, there are still an important information gap. Comparisons of the acoustic variables of the advertisement call between different populations allow us to understand how the acoustic variables vary according to the environmental or geographical factors. Furthermore, the recordings of other types of calls contribute to increase the information about the acoustic repertoires and have a comprehensive knowledge about aspects of the natural history and behavior of the species. Finally, it is important to highlight the need for additional acoustic studies on anuran amphibians from Argentina, especially due to the continuous alteration or loss of their habitats, and consequently of the acoustic diversity and soundscape. Los primeros estudios acústicos sistematizados en poblaciones argentinas de anuros comenzaron en la década de 1960 con las contribuciones de Avelino Barrio. Desde entonces, con algunas excepciones, el conocimiento acerca de las vocalizaciones de especies locales ha tenido un escaso desarrollo. El género de ranas neotropicales Leptodactylus incluye 83 especies, 14 de ellas presentes en Argentina. En este contexto, y con el fin de relevar los estudios acústicos en representantes de este género, se recopilaron los principales estudios sobre sus vocalizaciones, con énfasis en poblaciones locales. Adicionalmente, se compara esta información con nuevos datos acústicos para L. bufonius, L. elenae, L. fuscus, L. gracilis, L. laticeps, L. latinasus, L. luctator, L. macrosternum y L. podicipinus obtenidos a partir de poblaciones de las provincias de Corrientes, Chaco y San Juan. Complementariamente, se revisan algunos términos utilizados en estudios previos con el fin de estandarizar la terminología aplicada a los cantos de las especies de Leptodactylus, y se identifican, además, aquellas que carecen de descripciones de sus vocalizaciones en poblaciones topotípicas, de las cuales L. elenae, L. laticeps y L. luctator poseen su localidad tipo en Argentina. Los estudios de variación acústica en anfibios anuros, ya sea con fines taxonómicos o de variación geográfica, pueden considerarse incipientes en Argentina, y por lo tanto, existen todavía importantes vacíos de información. La comparación de las variables acústicas de los cantos de advertencia entre diferentes poblaciones permite comprender de qué manera éstas varían en función de los factores ambientales o geográficos. Además, el registro de otros tipos de cantos contribuye a incrementar el conocimiento sobre el reportorio acústico y tener un conocimiento integral sobre aspectos de la historia natural y del comportamiento de las especies. Finalmente, es importante destacar la necesidad de estudios acústicos adicionales en anfibios anuros de Argentina, especialmente debido a la continua alteración o pérdida de sus hábitats y por consiguiente, de la diversidad acústica y del paisaje sonoro. Pimenta Eleutério, Jady Santos-Jr, Alfredo P. Vaz-Silva, Wilian Ribeiro, Síria http://sedici.unlp.edu.ar:80/handle/10915/159824 2023-11-06T20:02:44Z 2023-09-01T00:00:00Z

Articulo Cuadernos de Herpetología; vol. 37, no. 2 We provide new morphological and geographic distribution data for Leposternon mineiro. Fifteen specimens of L. mineiro were analyzed (six specimens of the type series and nine additional specimens), in addition to 404 specimens of other species of the genus, used for identification and comparison. Meristic characters, morphometrics, head scale patterns and dentition matched the previously published diagnosis of the species, but we also found some variations compared to the type series. We expanded the ranges of the following diagnostic characters of L. mineiro: snout-vent length 221–380 mm, tail length 11.5–23.4 mm, 252–300 dorsal postpectoral halfannuli, 252–280 ventral postpectoral half-annuli, 14–16 caudal annuli, 26–37 dorsal segments and 24–39 ventral segments in a midbody annuli, and 2–4 precloacal pores. The new record from the municipality of Cristalina, State of Goiás, extends the geographic distribution of the species by 148 km west of nearest record.; Nós fornecemos novos dados morfológicos e de distribuição geográfica para Leposternon mineiro. Foram analisados quinze espécimes de L. mineiro (seis espécimes da série-tipo e nove exemplares adicionais), além de 404 exemplares de outras espécies do gênero, utilizados para identificação e comparação. Caracteres merísticos, morfométricos, padrões de escamas da cabeça e dentição corresponderam com a diagnose da espécie publicada anteriormente, mas encontramos algumas variações em comparação à série-tipo. Nós ampliamos as variações dos seguintes caracteres diagnósticos de L. mineiro: comprimento rostro-cloacal de 221–380 mm, comprimento da cauda de 11,5–23,4 mm, 252–300 meios anéis pós-peitorais dorsais, 252–280 meios anéis pós-peitorais ventrais, 14–16 anéis caudais, 26–37 segmentos dorsais e 24–39 segmentos ventrais em um anel do meio do corpo e 2–4 poros pré-cloacais. O novo registro do município de Cristalina, Estado de Goiás, amplia a distribuição geográfica da espécie em 148 km a oeste do registro mais próximo."

2023-09-01T00:00:00Z We provide new morphological and geographic distribution data for Leposternon mineiro. Fifteen specimens of L. mineiro were analyzed (six specimens of the type series and nine additional specimens), in addition to 404 specimens of other species of the genus, used for identification and comparison. Meristic characters, morphometrics, head scale patterns and dentition matched the previously published diagnosis of the species, but we also found some variations compared to the type series. We expanded the ranges of the following diagnostic characters of L. mineiro: snout-vent length 221–380 mm, tail length 11.5–23.4 mm, 252–300 dorsal postpectoral halfannuli, 252–280 ventral postpectoral half-annuli, 14–16 caudal annuli, 26–37 dorsal segments and 24–39 ventral segments in a midbody annuli, and 2–4 precloacal pores. The new record from the municipality of Cristalina, State of Goiás, extends the geographic distribution of the species by 148 km west of nearest record. Nós fornecemos novos dados morfológicos e de distribuição geográfica para Leposternon mineiro. Foram analisados quinze espécimes de L. mineiro (seis espécimes da série-tipo e nove exemplares adicionais), além de 404 exemplares de outras espécies do gênero, utilizados para identificação e comparação. Caracteres merísticos, morfométricos, padrões de escamas da cabeça e dentição corresponderam com a diagnose da espécie publicada anteriormente, mas encontramos algumas variações em comparação à série-tipo. Nós ampliamos as variações dos seguintes caracteres diagnósticos de L. mineiro: comprimento rostro-cloacal de 221–380 mm, comprimento da cauda de 11,5–23,4 mm, 252–300 meios anéis pós-peitorais dorsais, 252–280 meios anéis pós-peitorais ventrais, 14–16 anéis caudais, 26–37 segmentos dorsais e 24–39 segmentos ventrais em um anel do meio do corpo e 2–4 poros pré-cloacais. O novo registro do município de Cristalina, Estado de Goiás, amplia a distribuição geográfica da espécie em 148 km a oeste do registro mais próximo." Ruiz, Soledad Chafrat, Pablo Quipildor, Matías Valdecantos, Soledad Lobo, Fernando http://sedici.unlp.edu.ar:80/handle/10915/159823 2023-11-06T20:02:45Z 2023-09-01T00:00:00Z

Articulo Cuadernos de Herpetología; vol. 37, no. 2 Liolaemus is the genus with the highest number of lizard species described in South America up to date, with approximately 290. One of the groups within the genus, the Liolaemus elongatus group, is distributed in central-south Argentina and Chile. In this work, we describe a new species belonging to the L. petrophilus clade using an integrative approach that includes the analysis of morphological (lepidosis, morphometric, coloration and hemipenis characters) and molecular evidence (genetic distances and phylogeny). We provide information about the geological formation of the study area and the clade distribution, and present an extensive description of its natural history (including diet, habitat, behaviour, phytogeography, mode of life, and sympatric species). Additionally, we present a time divergence analysis of internal branches for all representatives of the L. elongatus group. This newly described species shows character states (morphological and molecular) that allow its clear distinction from the other members of the L. elongatus group, as well as from the remaining Liolaemus species. According to our results, the L. elongatus group originated during the Miocene, whereas the new species diverged from its sister taxon during the Pleistocene.; Liolaemus es el género con el mayor número de especies de lagartijas descritas en América del Sur hasta la fecha, con aproximadamente 290 especies. Uno de los grupos dentro del género, el grupo de Liolaemus elongatus, se distribuye en el centro-sur de Argentina y Chile. En este trabajo, describimos una nueva especie perteneciente al clado de L. petrophilus usando un enfoque integrador que incluye el análisis de evidencia morfológica (lepidosis, morfométrica, coloración y caracteres de hemipenes) y evidencia molecular (distancias genéticas y filogenia). Brindamos información sobre la formación geológica del área de estudio y la distribución del clado, y presentamos una descripción extensa de su historia natural (que incluye dieta, hábitat, comportamiento, fitogeografía, modo de vida y especies simpátricas). Además, presentamos un análisis de tiempos de divergencia de las ramas internas y de todos los representantes del grupo de L. elongatus. Esta especie recién descrita muestra estados de carácter (morfológicos y moleculares) que permiten su clara distinción de los otros miembros del grupo de L. elongatus, así como de las restantes especies de Liolaemus. Según nuestros resultados, el grupo de L. elongatus se originó durante el Mioceno, mientras que la nueva especie se separó de su taxón hermano durante el Pleistoceno.

2023-09-01T00:00:00Z Liolaemus is the genus with the highest number of lizard species described in South America up to date, with approximately 290. One of the groups within the genus, the Liolaemus elongatus group, is distributed in central-south Argentina and Chile. In this work, we describe a new species belonging to the L. petrophilus clade using an integrative approach that includes the analysis of morphological (lepidosis, morphometric, coloration and hemipenis characters) and molecular evidence (genetic distances and phylogeny). We provide information about the geological formation of the study area and the clade distribution, and present an extensive description of its natural history (including diet, habitat, behaviour, phytogeography, mode of life, and sympatric species). Additionally, we present a time divergence analysis of internal branches for all representatives of the L. elongatus group. This newly described species shows character states (morphological and molecular) that allow its clear distinction from the other members of the L. elongatus group, as well as from the remaining Liolaemus species. According to our results, the L. elongatus group originated during the Miocene, whereas the new species diverged from its sister taxon during the Pleistocene. Liolaemus es el género con el mayor número de especies de lagartijas descritas en América del Sur hasta la fecha, con aproximadamente 290 especies. Uno de los grupos dentro del género, el grupo de Liolaemus elongatus, se distribuye en el centro-sur de Argentina y Chile. En este trabajo, describimos una nueva especie perteneciente al clado de L. petrophilus usando un enfoque integrador que incluye el análisis de evidencia morfológica (lepidosis, morfométrica, coloración y caracteres de hemipenes) y evidencia molecular (distancias genéticas y filogenia). Brindamos información sobre la formación geológica del área de estudio y la distribución del clado, y presentamos una descripción extensa de su historia natural (que incluye dieta, hábitat, comportamiento, fitogeografía, modo de vida y especies simpátricas). Además, presentamos un análisis de tiempos de divergencia de las ramas internas y de todos los representantes del grupo de L. elongatus. Esta especie recién descrita muestra estados de carácter (morfológicos y moleculares) que permiten su clara distinción de los otros miembros del grupo de L. elongatus, así como de las restantes especies de Liolaemus. Según nuestros resultados, el grupo de L. elongatus se originó durante el Mioceno, mientras que la nueva especie se separó de su taxón hermano durante el Pleistoceno.