Results: 2

Thermoregulation mode, substrate temperature and camouflage efficiency affecting defensive behavior of lizards in Amazonia

Acta amaz; 50 (4), 2020
Em ectotérmicos, respostas defensivas a predadores geralmente dependem de relações de custo-benefício entre risco de morte e a energia necessária para fugir. Neste estudo, investigamos lagartos na Amazônia para testar a hipótese de que a distância mínima de aproximação de predadores (DAP) é i...

Toxicity of the feathers of Yellow Grosbeak, Pheucticus chrysopeplus (Passeriformes: Cardinalidae), a chemically defended neotropical bird

Rev. biol. trop; 66 (4), 2018
Abstract Chemical defense is a widespread mechanism on many animals and plants. However, just a few cases are known for avian species. In this study we evaluate the toxicity of Pheucticus chrysopeplus feather extract via lethality test with brine shrimp (Artemia salina) as an in vivo model. Mortality of ...