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Artículo

Age and habitat quality matters: isotopic variation of two sympatric species of rodents in Neotropical Forest

Bovendorp, Ricardo Siqueira; Simoes Libardi, GustavoIcon ; Sarmento, Mariana Montagner de Moraes; Camargo, Plínio Barbosa; Reis Percequillo, Alexandre
Fecha de publicación: 12/2017
Editorial: Associazione Teriologica Italiana
Revista: Hystrix
ISSN: 0394-1914
e-ISSN: 1825-5272
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ciencias Biológicas

Resumen

Dietary studies allow us to understand important ecological patterns such as intra- and interpopulation variation and interspecific differences regarding the use of food sources. Stable isotopes have been successfully employed to detect dietary differences between species and feeding shifts within a species, as a response to age, habitat use, and resource availability. Here we investigated the stable isotope compositions of carbon and nitrogen of young and adult specimens of Euryoryzomys russatus and Sooretamys angouya and their stomach contents, in a complex mosaic of vegetation in the Brazilian Atlantic Forest. Isotopes indicated a pronounced inter- and intraspecific plasticity in resource use for E. russatus and S. angouya. Plant sources were the prevalent feeding items for E. russatus, with low to intermediate consumption of arthropods. For S. angouya, plants were dominant in the stomach content, but arthropod arose as an important source. E. russatus showed more variation in isotopic signature between grids than S. angouya, suggesting that the former was more affected by habitat changes. These results allow us to better understand the ontogeny, diet and the behavioral responses to environmental variations of both species. Finally, our study contributes to reduce the lack of knowledge about sympatric species ecology and aggregates information for their conservation.
Palabras clave: Atlantic Tropical Forest , Euryoryzomys Russatus , Sooretamys Angouya , Stomach Contents
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/46543
URL: http://www.italian-journal-of-mammalogy.it/Age-and-habitat-quality-matters-isoto
DOI: http://dx.doi.org/10.4404/hystrix-28.2-12521
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Articulos(IDEAUS)
Articulos de INSTITUTO DE DIVERSIDAD Y EVOLUCION AUSTRAL
Citación
Bovendorp, Ricardo Siqueira; Simoes Libardi, Gustavo; Sarmento, Mariana Montagner de Moraes; Camargo, Plínio Barbosa; Reis Percequillo, Alexandre; Age and habitat quality matters: isotopic variation of two sympatric species of rodents in Neotropical Forest; Associazione Teriologica Italiana; Hystrix; 28; 2; 12-2017; 1-8
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