Data/hora: 01/06/2024 05:46:51

Provedor de dados: 	36	
País: 	Brazil	
Título: 	Thermoregulation mode, substrate temperature and camouflage efficiency affecting defensive behavior of lizards in Amazonia	
Autores: 	SOUZA,Erika; COELHO,Ana; SANTOS-JR,Alfredo P.; KAWASHITA-RIBEIRO,Ricardo Alexandre; FRAGA,Rafael de.	
Data: 	2020-12-01	
Ano: 	2020	
Palavras-chave: 	Cnemidophorus lemniscatus; Escape; Gonatodes humeralis; Heliotherm; Non-heliotherm; Predation pressure.	
Resumo: 	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 thermoregulation mode as a random factor, camouflage negatively affected PAD estimates, independently of temperature. Our findings suggest that high exposure to predators in open habitats may be compensated by rapid fleeing optimized by high temperatures, and low fleeing performance, usually caused by relatively low temperatures in shaded habitats, may be compensated by camouflage. However, identifying the best PAD predictor greatly depended on accounting for thermoregulation mode in hypothesis testing, although the results obtained by both fixed and mixed-effects models may be relevant for conservation.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672020000400339	
Editor: 	Instituto Nacional de Pesquisas da Amazônia	
Relação: 	10.1590/1809-4392201904251	
Formato: 	text/html	
Fonte: 	Acta Amazonica  v.50 n.4 2020	
Fonte: 	info:eu-repo/semantics/openAccess