Increased exposure to predators increases both exploration and activity level in Brachyrhaphis episcopi

G. A. Archard, V. A. Braithwaite

Research output: Contribution to journalArticle

59 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)593-601
Number of pages9
JournalJournal of Fish Biology
Volume78
Issue number2
DOIs
StatePublished - Feb 1 2011

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science

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