Increased exposure to predators increases both exploration and activity level in Brachyrhaphis episcopi.
J Fish Biol
; 78(2): 593-601, 2011 Feb.
Article
em En
| MEDLINE
| ID: mdl-21284637
ABSTRACT
Two temperament traits, tendency to explore and activity level, were measured in a tropical poeciliid fish, the Panamanian bishop Brachyrhaphis episcopi. Open-field arena tests were used to quantify how predation pressure shapes activity levels and exploratory behaviours. Fish behaviour differed between high and low-predation populations. Fish that experienced higher levels of predation were both more explorative and more active. There were also some individual differences within populations; fish varied in their levels of exploration and activity in a novel open arena, but these differences were not related to sex or size. Together with previous studies on this species, these results indicate that there is a behavioural syndrome associated with predation pressure. Fish from high-predation populations are bolder, more explorative and more active than those from low-predation populations.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Comportamento Animal
/
Ciprinodontiformes
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Comportamento Exploratório
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Atividade Motora
Limite:
Animals
Idioma:
En
Ano de publicação:
2011
Tipo de documento:
Article