Uso do espaço, dieta, atividade, morfometria e reprodução de Scinax pachycrus (Miranda-Ribeiro, 1937) e Scinax x-signatus (Spix, 1824) (Amphibia;Hylidae) em uma área de caatinga do alto sertão sergipano

• Ano de defesa: 2011
• Autor(a) principal: Silva, Bruno Duarte da
• Orientador(a): Nascimento, Fabio Santos
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Sergipe
• Programa de Pós-Graduação: Pós-Graduação em Ecologia e Conservação
• País: BR
• Palavras-chave em Português: Ecologia; Nicho; Recursos; Anuros; Caatinga
• Palavras-chave em Inglês: Ecology; Niche; Resources; Frogs; Caatinga
• Área do conhecimento CNPq: CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL::CONSERVACAO DA NATUREZA
• Link de acesso: https://ri.ufs.br/handle/riufs/4482

Sympatric species can coexist to explore different habitats or microhabitats, different trophic resources are used and / or are active in different periods. Populations of Scinax pachycrus and Scinax xsignatus co-occur and have been studied in the Unidade de Coservação Monumento Natural Grota do Angico between January and December 2010. The study objective was to determine how similar they share space and food resources. Information on the periods of highest incidence, throughout the year, times of activity and morphology were also addressed. The two species differed in relation to the use of habitat, microhabitat, height of perch, dominant stratum of the vegetation in places where they were found, numerical and volumetric proportions of prey eaten, times of the year they were more frequent and activity times. Scinax pachycrus were more common in pools formed over a creek with a predominance of shrub. These sites were usually observed on the leaves of bromeliads or on the surface of rocks, occupying perches a bit taller than his counterpart. Were most active between 18 and 20 h. Regarding diet, the main prey used by S. pachycrus were spiders beetles and insect larvae. Small differences in numerical and volumetric proportions of prey eaten were observed between males and females of this species. Since S. xsignatus were more frequent in ponds, with a predominance of herbaceous plants, which were primarily the soil or the surface of the rocks. Were active mainly between 20:23 h and the most important food items for this species were insect larvae, beetles and locusts. Scinax x-signatus is slightly larger than S. pachycrus, and both species have females larger than males. Differences in the use of space, diet, periods of highest incidence, morphology and activity seem to contribute to species coexistence in the area.