Defaunation affects the populations and diets of rodents in Neotropical rainforests

Autor(es)

Galetti, Mauro ^[1] ; Guevara, Roger ^[2] ; Neves, Carolina L. ^[1] ; Rodarte, Raisa R. ^[1] ; Bovendorp, Ricardo S. ^[1] ; Moreira, Marcelo ^[3] ; Hopkins, III, John B. ^[4] ; Yeakel, Justin D. ^[5]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista UNESP, Dept Ecol, BR-13506900 Sao Paulo - Brazil

^[2] AC Red Biol Evolut, Inst Ecol, Xalapa 91070, Veracruz - Mexico

^[3] Univ Sao Paulo, CENA, BR-13400970 Piracicaba, SP - Brazil

^[4] Hopkins, John B., III, Peking Univ, Sch Life Sci, Beijing 100871 - Peoples R China

^[5] Santa Fe Inst, Santa Fe, NM 87501 - USA

• Tipo de documento: Artigo Científico
• Fonte: Biological Conservation; v. 190, p. 2-7, OCT 2015.
• Citações Web of Science: 23

Resumo

Most tropical rainforests have been defaunated of large-bodied mammals and the cascading effects of such extirpations have been poorly studied, particularly on other animals. We used a natural experiment in the Brazilian Atlantic rainforest to investigate the ecological responses of rodents to the functional extinction of a dominant terrestrial mammal, the white-lipped peccary (Tayassu pecan). We detected a 45% increase in the abundance and a decrease in diversity of rodents in defaunated forests. Two of these species (Akodon montensis and Oligoryzomys nigripes) are important hosts of Hantavirus, a lethal virus for humans. Stable isotope ratios (delta C-13 and delta N-15) derived from the hair of rodents and peccaries and their food resources indicate that at least two rodent species shifted to a diet more similar to peccaries in the defaunated forest. Because most tropical rainforests are facing dramatic extirpation of large mammals, we can expect changes in the composition and structure of small mammal communities with potential consequences for human health even in non-fragmented landscapes. (C) 2015 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 14/01986-0 - Consequências ecológicas da defaunação na Mata Atlântica
• Beneficiário: Mauro Galetti Rodrigues
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 07/03392-6 - Efeitos de um gradiente de defaunação na herbivoria, predação e dispersão de sementes: uma perspectiva na Mata Atlântica
• Beneficiário: Mauro Galetti Rodrigues
• Modalidade de apoio: Auxílio à Pesquisa - Temático