http://sedici.unlp.edu.ar:80/handle/10915/60098 Mon, 09 Nov 2026 08:28:05 GMT 2026-11-09T08:28:05Z http://sedici.unlp.edu.ar:80/handle/10915/60140 Comunicacion Cuadernos de Herpetología; vol. 31, no. 1 We report the first record of Leiosaurus paronae in the department Valle Fértil, San Juan province, Argentina. In December 2015 and January 2016 were collected and identified two individuals, an adult female (SVL 79 mm) and a juvenile (SVL 44 mm). The specimens were then deposited in the herpetological collection of the Universidad Nacional de San Juan. With this new record, we confirm the presence of Leiosaurus paronae for the province of San Juan. Sun, 01 Jan 2017 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/60140 2017-01-01T00:00:00Z We report the first record of Leiosaurus paronae in the department Valle Fértil, San Juan province, Argentina. In December 2015 and January 2016 were collected and identified two individuals, an adult female (SVL 79 mm) and a juvenile (SVL 44 mm). The specimens were then deposited in the herpetological collection of the Universidad Nacional de San Juan. With this new record, we confirm the presence of Leiosaurus paronae for the province of San Juan. http://sedici.unlp.edu.ar:80/handle/10915/60139 Comunicacion Cuadernos de Herpetología; vol. 31, no. 1 Here, we present the first record of Liolameus azarai and Hemidactylus mabouia for the Ñeembucú Department, and Manciola guaporicola for the Alto Paraguay Department, all in Paraguay. These data were the result of recent fieldwork in Paraguay and contribute to knowledge about the distribution of these lizards in this country. Sun, 01 Jan 2017 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/60139 2017-01-01T00:00:00Z Here, we present the first record of Liolameus azarai and Hemidactylus mabouia for the Ñeembucú Department, and Manciola guaporicola for the Alto Paraguay Department, all in Paraguay. These data were the result of recent fieldwork in Paraguay and contribute to knowledge about the distribution of these lizards in this country. http://sedici.unlp.edu.ar:80/handle/10915/60138 Comunicacion Cuadernos de Herpetología; vol. 31, no. 1 Las serpientes del género Apostolepis Cope, 1862 son un grupo de culebras fosoriales con hábitos nocturnos, usualmente de alimentación ophiophaga (Lema, 2001). Endémica de Sudamérica, con 33 especies registradas desde las Guyanas hasta el noreste de Argentina en áreas tropicales y subtropicales del este de los Andes (Uetz et al., 2014). Según Harvey (1999) y (Lema, 2001) en Bolivia se tienen registradas 9 especies: A. ambiniger (Peters, 1869), A. dorbignyi (Schlegel, 1837), A. nigrolineata (Peters, 1869), A. nigroterminata (Boulenger, 1896), A. vittata (Cope, 1887), y las endémicas de Bolivia A. breviceps (Harvey, Gonzales & Scrocchi, 2001), A. phillipsi (Harvey, 1999), A. tenuis (Ruthven, 1927) y A. multicincta (Harvey, 1999). Mediante esta publicacion brindamos el nuevo registro de A. multicincta que extiende su distribución en Bolivia hacia el este del departamento de Cochabamba, ampliando de la misma manera su rango altitudinal hasta los 2100 m.s.n.m. La distribución dentro de la ecorregión de los Bosque Secos Interandinos hace que esta especie tenga una de las mayores amenazas para su declive poblacional, la perdida de hábitat, que actualmente está causando la extinción de muchas especies en Bolivia. Sun, 01 Jan 2017 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/60138 2017-01-01T00:00:00Z Las serpientes del género Apostolepis Cope, 1862 son un grupo de culebras fosoriales con hábitos nocturnos, usualmente de alimentación ophiophaga (Lema, 2001). Endémica de Sudamérica, con 33 especies registradas desde las Guyanas hasta el noreste de Argentina en áreas tropicales y subtropicales del este de los Andes (Uetz et al., 2014). Según Harvey (1999) y (Lema, 2001) en Bolivia se tienen registradas 9 especies: A. ambiniger (Peters, 1869), A. dorbignyi (Schlegel, 1837), A. nigrolineata (Peters, 1869), A. nigroterminata (Boulenger, 1896), A. vittata (Cope, 1887), y las endémicas de Bolivia A. breviceps (Harvey, Gonzales & Scrocchi, 2001), A. phillipsi (Harvey, 1999), A. tenuis (Ruthven, 1927) y A. multicincta (Harvey, 1999). Mediante esta publicacion brindamos el nuevo registro de A. multicincta que extiende su distribución en Bolivia hacia el este del departamento de Cochabamba, ampliando de la misma manera su rango altitudinal hasta los 2100 m.s.n.m. La distribución dentro de la ecorregión de los Bosque Secos Interandinos hace que esta especie tenga una de las mayores amenazas para su declive poblacional, la perdida de hábitat, que actualmente está causando la extinción de muchas especies en Bolivia. http://sedici.unlp.edu.ar:80/handle/10915/60123 Comunicacion Cuadernos de Herpetología; vol. 31, no. 1 First herpetofauna record of two protected areas of Santiago del Estero province (Argentina) Dry Chaco ecoregion is one of the largest remnants of dry forest in Latin America and has a very diverse herpetofauna. However, further studies are required for a deep knowledge of its composition and structure. Our objective was to perform an inventory of the herpetofauna in two natural areas of Dry Chaco of Santiago del Estero: Caburé Sur and Parque Provincial Copo. In the two protected areas we recorded 21 and 25 species of anurans and reptiles, respectively. According to the last Argentinean conservation assessment we found one threatened and five vulnerable species of reptiles in both protected areas. The inventory revealed that herpetofauna of the two protected areas of Santiago del Estero contains about 60% of the Dry Chaco herpetofauna. We report the presence of three new species for Santiago del Estero: Kentropyx viridistriga, Teius oculatus and Stenocercus doellojuradoi. We provide new information for future research and conservation actions on this ecoregion. Sun, 01 Jan 2017 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/60123 2017-01-01T00:00:00Z First herpetofauna record of two protected areas of Santiago del Estero province (Argentina) Dry Chaco ecoregion is one of the largest remnants of dry forest in Latin America and has a very diverse herpetofauna. However, further studies are required for a deep knowledge of its composition and structure. Our objective was to perform an inventory of the herpetofauna in two natural areas of Dry Chaco of Santiago del Estero: Caburé Sur and Parque Provincial Copo. In the two protected areas we recorded 21 and 25 species of anurans and reptiles, respectively. According to the last Argentinean conservation assessment we found one threatened and five vulnerable species of reptiles in both protected areas. The inventory revealed that herpetofauna of the two protected areas of Santiago del Estero contains about 60% of the Dry Chaco herpetofauna. We report the presence of three new species for Santiago del Estero: Kentropyx viridistriga, Teius oculatus and Stenocercus doellojuradoi. We provide new information for future research and conservation actions on this ecoregion. http://sedici.unlp.edu.ar:80/handle/10915/60122 Comunicacion Cuadernos de Herpetología; vol. 31, no. 1 Two new records of vertebrates in diet of Corallus hortulanus (Squamata: Boidae) in the northwest Amazon. Previous reports from the Brazilian Amazon demonstrated that the diet of Corallus hortulanus consist on small vertebrates. We add two new records to diet of Corallus hortulanus: a bird, Atticora fasciata and, a rodent Hylaeamys perenensis, from two localities in the Yasuni National Park in Ecuador, western Amazon. Our reports are based on field observations and the review of museum collections. We suggest that this snake present a day-night activity. Sun, 01 Jan 2017 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/60122 2017-01-01T00:00:00Z Two new records of vertebrates in diet of Corallus hortulanus (Squamata: Boidae) in the northwest Amazon. Previous reports from the Brazilian Amazon demonstrated that the diet of Corallus hortulanus consist on small vertebrates. We add two new records to diet of Corallus hortulanus: a bird, Atticora fasciata and, a rodent Hylaeamys perenensis, from two localities in the Yasuni National Park in Ecuador, western Amazon. Our reports are based on field observations and the review of museum collections. We suggest that this snake present a day-night activity. http://sedici.unlp.edu.ar:80/handle/10915/60121 Comunicacion Cuadernos de Herpetología; vol. 31, no. 1 We report on the predation of Thecadactylus solimoensis (Squamata, Phyllodactylidae) by an owl, Pulsatrix perspicillata (Aves, Strigiformes). Examination of pellets collected from a P. perspicillata roost contained a partial left maxilla of a gecko. The maxilla contained the following traits, which confirmed the identification of T. solimoensis: the large size of the maxilla, at least 27 tooth loci, a thickened medial side of the maxillary palatal shelf, a horizontal shelf at the base of the facial process, and blade like posterior process that does not taper abruptly. This is the first report of a gecko in the genus Thecadactylus being preyed upon by an owl. Sun, 01 Jan 2017 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/60121 2017-01-01T00:00:00Z We report on the predation of Thecadactylus solimoensis (Squamata, Phyllodactylidae) by an owl, Pulsatrix perspicillata (Aves, Strigiformes). Examination of pellets collected from a P. perspicillata roost contained a partial left maxilla of a gecko. The maxilla contained the following traits, which confirmed the identification of T. solimoensis: the large size of the maxilla, at least 27 tooth loci, a thickened medial side of the maxillary palatal shelf, a horizontal shelf at the base of the facial process, and blade like posterior process that does not taper abruptly. This is the first report of a gecko in the genus Thecadactylus being preyed upon by an owl. http://sedici.unlp.edu.ar:80/handle/10915/60120 Comunicacion Cuadernos de Herpetología; vol. 31, no. 1 Herein we report an atypical coloration in one individual of the yellow-striped poisonous frog, Dendrobates truncatus, in Colombian Magdalena middle valley. The adult individual presented leucism, a rare phenomenon occurs in nature or at very low frequencies Sun, 01 Jan 2017 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/60120 2017-01-01T00:00:00Z Herein we report an atypical coloration in one individual of the yellow-striped poisonous frog, Dendrobates truncatus, in Colombian Magdalena middle valley. The adult individual presented leucism, a rare phenomenon occurs in nature or at very low frequencies http://sedici.unlp.edu.ar:80/handle/10915/60119 Comunicacion Cuadernos de Herpetología; vol. 31, no. 1 Bullfrog invasion is a major conservation concern in South America, so there is an urgent need to detect and monitor its many invasion foci. Amphibian sampling methods commonly use calling display, specifically the nuptial calls of males. With the aim of obtaining the better day period to sample and monitor Lithobates catesbeianus presence, we recorded its calls at three ponds in two invaded localities in Uruguay (Aceguá, Cerro Largo, and San Carlos, Maldonado) during the reproductive season. Then, we studied the records, obtaining a subsample of calling intensity at the first 5 minutes for each hour. We detected that vocalization intensity remained almost constant between 20:00 and 05:00 h. Detection probability remained high and constant during this period, and then decreased. Therefore, bullfrog displays a constant calling activity during the nights of its reproductive period, even longer than native anurans. This long calling period facilitates its detection during nocturnal sampling. Sun, 01 Jan 2017 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/60119 2017-01-01T00:00:00Z Bullfrog invasion is a major conservation concern in South America, so there is an urgent need to detect and monitor its many invasion foci. Amphibian sampling methods commonly use calling display, specifically the nuptial calls of males. With the aim of obtaining the better day period to sample and monitor Lithobates catesbeianus presence, we recorded its calls at three ponds in two invaded localities in Uruguay (Aceguá, Cerro Largo, and San Carlos, Maldonado) during the reproductive season. Then, we studied the records, obtaining a subsample of calling intensity at the first 5 minutes for each hour. We detected that vocalization intensity remained almost constant between 20:00 and 05:00 h. Detection probability remained high and constant during this period, and then decreased. Therefore, bullfrog displays a constant calling activity during the nights of its reproductive period, even longer than native anurans. This long calling period facilitates its detection during nocturnal sampling. http://sedici.unlp.edu.ar:80/handle/10915/60118 Comunicacion Cuadernos de Herpetología; vol. 31, no. 1 Restriction of the distribution of Mesoclemmys vanderhaegei (Bour, 1973) (Testudines: Chelidae) in Argentina. The presence of the chelid turtle Mesoclemmys vanderhaegei in Argentina is currently restricted to some localities in Misiones, Corrientes and Formosa provinces. The only record for the last province was based in two specimens originally referred as M. vanderhaegei from the “Reserva Ecológica El Bagual”, which have been considered lost from the herpetological collection of the reserve. In a revision of the turtles at the herpetological collection of the Museo de La Plata both specimens were found. Both specimens, male and female, bear hypertrophied tubercles on the posterior face of the thigh, supporting that they actually correspond to Acanthochelys pallidipectoris. Thus, at the light of present evidence, the distribution of M. vanderhaegei in Argentina should be restricted to a small area at northern Corrientes and southern Misiones provinces. Sun, 01 Jan 2017 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/60118 2017-01-01T00:00:00Z Restriction of the distribution of Mesoclemmys vanderhaegei (Bour, 1973) (Testudines: Chelidae) in Argentina. The presence of the chelid turtle Mesoclemmys vanderhaegei in Argentina is currently restricted to some localities in Misiones, Corrientes and Formosa provinces. The only record for the last province was based in two specimens originally referred as M. vanderhaegei from the “Reserva Ecológica El Bagual”, which have been considered lost from the herpetological collection of the reserve. In a revision of the turtles at the herpetological collection of the Museo de La Plata both specimens were found. Both specimens, male and female, bear hypertrophied tubercles on the posterior face of the thigh, supporting that they actually correspond to Acanthochelys pallidipectoris. Thus, at the light of present evidence, the distribution of M. vanderhaegei in Argentina should be restricted to a small area at northern Corrientes and southern Misiones provinces. http://sedici.unlp.edu.ar:80/handle/10915/60102 Comunicacion Cuadernos de Herpetología; vol. 31, no. 1 Chacophrys pierottii is a medium-sized frog with generalist and opportunistic predation habits, and its diet includes mainly small vertebrates and arthropods. During a fieldtrip in Defensores del Chaco National Park (Alto Paraguay department, Paraguay), at the base of Cerro León we observed a juvenile male Chacophrys pierottii feeding on a juvenile Trachycephalus typhonius near to a temporary pond, formed by recent heavy rains. Our finding represents the first record of the arboreal frog, Trachycephalus typhonius as a prey item of C. pierottii. However, more data is necessary to determine if this event is an isolated case product of voracity, or T. typhonius juveniles on the ground are common prey during explosive reproduction. Sun, 01 Jan 2017 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/60102 2017-01-01T00:00:00Z Chacophrys pierottii is a medium-sized frog with generalist and opportunistic predation habits, and its diet includes mainly small vertebrates and arthropods. During a fieldtrip in Defensores del Chaco National Park (Alto Paraguay department, Paraguay), at the base of Cerro León we observed a juvenile male Chacophrys pierottii feeding on a juvenile Trachycephalus typhonius near to a temporary pond, formed by recent heavy rains. Our finding represents the first record of the arboreal frog, Trachycephalus typhonius as a prey item of C. pierottii. However, more data is necessary to determine if this event is an isolated case product of voracity, or T. typhonius juveniles on the ground are common prey during explosive reproduction. http://sedici.unlp.edu.ar:80/handle/10915/60100 Articulo Cuadernos de Herpetología; vol. 31, no. 1 Interesting structural and temporal variations have been reported in embryonic stages of different anuran groups. However, knowledge of the contribution of allometry and temporal patterns to the morphological change during ontogeny remains limited. We studied the early development of five species of Hypsiboas (Anura: Hylidae), in order to explore heterochronic changes during the sequence of events in the development of some embryonic and larval characters, and interspecific shape-size relationships. Ontogenetic series were analyzed using multivariate methods and sequence heterochrony approach. The results show variations in morphology and in the developmental sequence of the considered characters, in some cases in relation with the oviposition mode of the studied species. The relationship between shape, size, and the events that define developmental stages varies interspecifically and reveals a decoupling between some characters which result in embryos with different morphologies. This paper provides information and new questions towards a better understanding of the evolution of anuran development and variation in patterns and processes across different lineages.; Interesantes variaciones estructurales y temporales han sido reportadas en estadios embrionarios de diversos grupos de anuros. Sin embargo, el conocimiento de la contribución de patrones alométricos y temporales al cambio morfológico en el transcurso de la ontogenia continua siendo limitado. En este trabajo estudiamos el desarrollo temprano de cinco especies del género Hypsiboas (Anura: Hylidae) con el objeto de indagar en los cambios heterocrónicos durante la secuencia de eventos del desarrollo de ciertos caracteres embrionarios y larvales, y en las relaciones interespecíficas de forma-tamaño. Las series ontogenéticas se analizaron mediante métodos multivariados y la aproximación de heterocronías de secuencia. Los resultados muestran variaciones morfológicas y en la secuencia de desarrollo en los caracteres considerados, en algunos casos en aparente relación con el modo de oviposición de las especies estudiadas. La relación entre forma, tamaño, y eventos que definen estadios de desarrollo es variable interespecíficamente, y revela un desacople entre algunos caracteres que redunda en embriones con morfologías diferentes. Este trabajo genera numerosos nuevos interrogantes, cuya investigación es requisito para comprender la evolución del desarrollo en anuros y los cambios en patrones y procesos a través de diferentes linajes. Sun, 01 Jan 2017 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/60100 2017-01-01T00:00:00Z Interesting structural and temporal variations have been reported in embryonic stages of different anuran groups. However, knowledge of the contribution of allometry and temporal patterns to the morphological change during ontogeny remains limited. We studied the early development of five species of Hypsiboas (Anura: Hylidae), in order to explore heterochronic changes during the sequence of events in the development of some embryonic and larval characters, and interspecific shape-size relationships. Ontogenetic series were analyzed using multivariate methods and sequence heterochrony approach. The results show variations in morphology and in the developmental sequence of the considered characters, in some cases in relation with the oviposition mode of the studied species. The relationship between shape, size, and the events that define developmental stages varies interspecifically and reveals a decoupling between some characters which result in embryos with different morphologies. This paper provides information and new questions towards a better understanding of the evolution of anuran development and variation in patterns and processes across different lineages. Interesantes variaciones estructurales y temporales han sido reportadas en estadios embrionarios de diversos grupos de anuros. Sin embargo, el conocimiento de la contribución de patrones alométricos y temporales al cambio morfológico en el transcurso de la ontogenia continua siendo limitado. En este trabajo estudiamos el desarrollo temprano de cinco especies del género Hypsiboas (Anura: Hylidae) con el objeto de indagar en los cambios heterocrónicos durante la secuencia de eventos del desarrollo de ciertos caracteres embrionarios y larvales, y en las relaciones interespecíficas de forma-tamaño. Las series ontogenéticas se analizaron mediante métodos multivariados y la aproximación de heterocronías de secuencia. Los resultados muestran variaciones morfológicas y en la secuencia de desarrollo en los caracteres considerados, en algunos casos en aparente relación con el modo de oviposición de las especies estudiadas. La relación entre forma, tamaño, y eventos que definen estadios de desarrollo es variable interespecíficamente, y revela un desacople entre algunos caracteres que redunda en embriones con morfologías diferentes. Este trabajo genera numerosos nuevos interrogantes, cuya investigación es requisito para comprender la evolución del desarrollo en anuros y los cambios en patrones y procesos a través de diferentes linajes. http://sedici.unlp.edu.ar:80/handle/10915/60099 Articulo Cuadernos de Herpetología; vol. 31, no. 1 This paper describes ecological features of the reproductive biology of a population of Elachistocleis bicolor from Uruguay. From a monthly sample obtained throughout a year, we measured mass of the fat bodies and the ovaries, testicular volume, and estimate fecundity. We found evidence of a relationship between reproductive activity and air temperature, although we cannot rule out photoperiod as a regulator mechanism of the reproductive cycle. The dynamics of fat bodies are independent of the reproductive cycle, since their mass does not vary significantly along the year. We found evidence of sexual dimorphism and dichromatism, expressed by females being largest than males and by dark colored vocal sacs of males, although only present in some of them. Fecundity in females increases with body size, however larger females do not invested most of resources in reproduction.; Este trabajo describe aspectos de la biología reproductiva de una población uruguaya de Elachistocleis bicolor. En una muestra mensual obtenida durante un año, se midió la masa de los cuerpos grasos y ovarios, el volumen testicular y se estimó la fecundidad. Se encontró evidencia que la actividad reproductiva se encuentra correlacionada con la temperatura, sin embargo no podemos descartar al fotoperiodo como regulador del ciclo reproductivo. La dinámica de los cuerpos grasos es independiente del ciclo reproductivo, ya que su masa no varió significativamente durante el año. Se encontró evidencia de dimorfismo y dicromatismo sexual, expresado por el mayor tamaño de las hembras y en la coloración oscura del saco vocal de los machos, aunque sólo presente en algunos de ellos. La fecundidad de las hembras se incrementó con el tamaño corporal; sin embargo, las hembras más grandes no invierten una mayor proporción de sus recursos en la reproducción. Sun, 01 Jan 2017 00:00:00 GMT http://sedici.unlp.edu.ar:80/handle/10915/60099 2017-01-01T00:00:00Z This paper describes ecological features of the reproductive biology of a population of Elachistocleis bicolor from Uruguay. From a monthly sample obtained throughout a year, we measured mass of the fat bodies and the ovaries, testicular volume, and estimate fecundity. We found evidence of a relationship between reproductive activity and air temperature, although we cannot rule out photoperiod as a regulator mechanism of the reproductive cycle. The dynamics of fat bodies are independent of the reproductive cycle, since their mass does not vary significantly along the year. We found evidence of sexual dimorphism and dichromatism, expressed by females being largest than males and by dark colored vocal sacs of males, although only present in some of them. Fecundity in females increases with body size, however larger females do not invested most of resources in reproduction. Este trabajo describe aspectos de la biología reproductiva de una población uruguaya de Elachistocleis bicolor. En una muestra mensual obtenida durante un año, se midió la masa de los cuerpos grasos y ovarios, el volumen testicular y se estimó la fecundidad. Se encontró evidencia que la actividad reproductiva se encuentra correlacionada con la temperatura, sin embargo no podemos descartar al fotoperiodo como regulador del ciclo reproductivo. La dinámica de los cuerpos grasos es independiente del ciclo reproductivo, ya que su masa no varió significativamente durante el año. Se encontró evidencia de dimorfismo y dicromatismo sexual, expresado por el mayor tamaño de las hembras y en la coloración oscura del saco vocal de los machos, aunque sólo presente en algunos de ellos. La fecundidad de las hembras se incrementó con el tamaño corporal; sin embargo, las hembras más grandes no invierten una mayor proporción de sus recursos en la reproducción.