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Thermoregulation mode, substrate temperature and camouflage efficiency affecting defensive behavior of lizards in Amazonia Acta Amazonica
SOUZA,Erika; COELHO,Ana; SANTOS-JR,Alfredo P.; KAWASHITA-RIBEIRO,Ricardo Alexandre; FRAGA,Rafael de.
ABSTRACT In ectotherms, defensive responses to predators usually depend on cost-benefit relationships between death risk and the energy required to flee. In this study we investigate Amazonian lizards to test the hypothesis that the minimum predator approach distance (PAD) is influenced by temperature and camouflage. We test the hypothesis that PAD estimated for species with different thermoregulation modes respond differently to temperature and camouflage. We sampled 35 lizards of a heliotherm and a non-heliotherm species, for which we simulated a terrestrial visually oriented predator. Using a fixed-effects linear model, temperature positively affected PAD estimates, but the camouflage did not contribute to the model. Using a mixed linear model assuming...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cnemidophorus lemniscatus; Escape; Gonatodes humeralis; Heliotherm; Non-heliotherm; Predation pressure.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672020000400339
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