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| Maneyro,Raúl; Núñez,Diego; Borteiro,Claudio; Tedros,Marcelo; Kolenc,Francisco. |
| Physalaemus henselii (Peters, 1872) is a little known leiuperid frog that has not been studied since the 1960s. Herein, we redescribe its advertisement call, and assess the female sexual cycle and the reproductive period on the basis of the macroscopic analysis of the ovaries and field observations. The Ovarian Size Factor (OSF) was calculated. The study was made in Departamento de Rivera, northern Uruguay. The advertisement call consists of short (177 ± 21ms), multipulsed (20 ± 3 pulses/note) notes, with a note repetition rate of 1.57 ± 0.13 notes/s. Physalaemus henselii has a female sexual cycle with unimodal distribution of gravid females, which are present from February to September. The OSF and the ratio "females with mature oocytes / females without... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amphibia; Anura; Physalaemus; Advertisement call; Sexual cycle. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212008000200007 |
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| Canavero,Andrés; Carreira,Santiago; Langone,José A.; Achaval,Federico; Borteiro,Claudio; Camargo,Arley; da Rosa,Inés; Estrades,Andrés; Fallabrino,Alejandro; Kolenc,Francisco; López-Mendilaharsu,M. Milagros; Maneyro,Raúl; Meneghel,Melitta; Nuñez,Diego; Prigioni,Carlos M.; Ziegler,Lucía. |
| The native species of amphibians and reptiles of Uruguay were categorized according to the IUCN Red List criteria. Out of 47 amphibian species, seven are listed as Critically Endangered (CR), five as Endangered (EN), one as Vulnerable (VU), three as Near Threatened (NT), and two as Data Deficient (DD); the remaining species are considered to be Least Concern (LC). Among the 64 species of reptiles evaluated, one is listed as Critically Endangered (CR), seven as Endangered (EN), two as Vulnerable (VU), one as Near Threatened (NT) and seven as Data Deficient (DD); the rest are considered to be Least Concern (LC). The use of these results as an additional criterion in the definition of protected areas in Uruguay will contribute towards the conservation of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Thretened species; Red List; Herpetofauna; IUCN. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212010000100001 |
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| Maneyro,Raúl; Naya,Daniel E.; Rosa,Inés da; Canavero,Andrés; Camargo,Arley. |
| The diet of Leptodactylus ocellatus (L., 1758) was studied in specimens collected at Maldonado Department (Uruguay), where monthly surveys were made between August 1998 and March 2000. A total of 143 frogs were collected, measured, sexed, and dissected, to assess stomach contents. The anurans were grouped into three age classes and four categories (considering sex and capture date). The trophic amplitude for each age class and sex-season category was quantified using Shannon-Weaver Index, and the trophic niche overlap between ages and categories by using the Pianka Index. Comparisons among treatments were made by G-tests. The most important prey items were coleopterans (IRI = 2547), and significant correlations were found between predator and prey sizes.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Trophic niche; Amphibia; Leptodactylus ocellatus; Uruguay. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212004000100010 |
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| Zank,Caroline; Di-Bernardo,Marcos; Maneyro,Raúl; Colombo,Patrick; Fusinatto,Luciana A.; Fonte,Luis Fernando M. da. |
| We studied the reproductive biology of a population of Pseudis minuta Günther, 1858 from Reserva Biológica do Lami (30º 15' S; 51º 05' W), Porto Alegre, southern Brazil. We assessed the spatial and temporal distribution of individuals (males, females, juveniles) and explored potential relationships with environmental variables. Field activities encompassed bimonthly surveys in three semi-permanent ponds, each one during approximately two days and two nights, from August 2004 to July 2005. We recorded differences in the sites used by males, females and juveniles, with males occupying deeper and more distant places from the border. The temporal distributions of individuals, calling sites and amplectant pairs indicated that the reproductive activity of P.... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Spatial-temporal distribution; Reproductive activity; Environmental variables; Pseudis minuta. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212010000200010 |
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