Different antipredator responses by Microcavia australis (Rodentia, Hystricognate, Caviidae) under predation risk Paula Andrea Taraborelli 1,5) , Pablo Moreno 1) , Ana Srur 2) , Ana J. Sandobal 3) , Mariana G. Martínez 3) & Stella M. Giannoni 4) ( 1 Unidad de Zoología y Ecología, GIB, IADIZA-CONICET, Casilla de Correo 507, 5500 Mendoza, Argentina; 2 Dendrocronología-IANIGLA-CRICYT, 5500 Mendoza, Argentina; 3 Parque Nacional El Leoncito, Barreal San Juan, Argentina; 4 Instituto y Museo de Ciencias Naturales, 5500 Mendoza, Argentina) (Accepted: 22 November 2007) Summary The antipredator response of rodents may depend on the species of predator and the structure of the vegetation. To investigate these effects, we compared the antipredator response of Microcavia australis to two predator models. We used two populations occurring at sites of the Monte desert that differ in plant structure and availability, and in predation risk. At Ñacuñán plant cover is 54.3%, the major risk of predation is from raptors. At El Leoncito plant cover is 21.9%, the predation risk is similar by raptors and carnivores. In addition we investigated whether olfactory cues for different predators may elicit different antipredator responses in absence of visual cues. This was done by presenting feces of two
Behaviour – Brill
Published: Jan 1, 2008
Keywords: ANTIPREDATOR RESPONSES; SIGHT AND SMELL; PLANT STRUCTURE; PREDATION RISK; RODENTS
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