Diel movement of brown trout, Salmo trutta, is reduced in dense populations with high site fidelity.

ABSTRACT: The movement of individuals within preferred areas is reduced by a high availability of food and information about its distribution, while high number of competitors promotes increased movement. Experienced animals use information about social and physical environment to improve resources exploitation, tended to maintain positions within the preferred areas and reuse the environment that is often referred to as site fidelity. In this study, radio-telemetry was used to observe the movements of 98 adult brown trout, Salmo trutta, in oligotrophic streams with different population densities; to determine subpopulation site fidelity, 5,195 conspecifics from 14 subpopulations were individually tagged during spring and autumn. During a 7-year-long field study, we tested the hypothesis that

SUBMITTER: Slavik O 

PROVIDER: S-EPMC5938464 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature