Advertisement call and female sexual cycle in Uruguayan populations of Physalaemus henselii (Anura, Leiuperidae)
AUTOR(ES)
Maneyro, Raúl, Núñez, Diego, Borteiro, Claudio, Tedros, Marcelo, Kolenc, Francisco
FONTE
Iheringia. Série Zoologia
DATA DE PUBLICAÇÃO
2008-06
RESUMO
Physalaemus henselii (Peters, 1872) is a little known leiuperid frog that has not been studied since the 1960’s. 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 mature oocytes" reached the highest values from April to June. The number and size of oocytes were positively correlated with female size. The smallest female (SVL =18.94mm, weight =0.78g) with mature oocytes was found in July. The observed sexual cycle with a single annual reproductive period during the cold season (autumn and early winter), is an uncommon fact for anuran species in the region.
Documentos Relacionados
- Cytogenetics of populations and species of Physalaemus cuvieri group (Anura, Leiuperidae)
- Descrição do girino de Physalaemus cicada (Anura, Leiuperidae)
- Isolation, characterization and chromosomal localization of repetitive DNA sequences in Physalaemus ephippifer (Anura Leiuperidae)
- Estudo citogenetico e das relações filogeneticas de Engystomops petersi e Engystomops sp. (Anura, Leiuperidae)
- The study of the organization of the 5S ribosomal gene in populations of Amazonian Engystomops (Anura, Leiuperidae)