Universität zu Köln

Heynen, M., Rentrop, I. and Borcherding, J. (2014). Age matters-Experienced predation risk affects behavior and morphology of juvenile 0+ and 1+ perch. Limnologica, 44. S. 32 - 40. MUNICH: ELSEVIER GMBH. ISSN 1873-5851

Full text not available from this repository.

Abstract

Empirical field studies have shown relations between predation risk and differences in anti-predator behavior and morphology between and within perch populations. The present study used juvenile 0+ and 1+ perch in an experimental approach to vary the factor predation risk. Predators were able to feed on perch during the experimental period in large outdoor tanks. Perceived predation risk affected the behavior and the morphology of both age classes of perch, with perch being deeper bodied and shyer with increasing intensity of predation. Changes in morphology were somewhat more pronounced in the 0+ age group, while the 1+ age group exhibited significantly stronger changes in behavior, but behaved less conform within groups. Though it remains unanswered if the predator induced these changes by selective predation, or if perch adjusted their behavior and morphology in response to the predator, the results indicate that perceived predation risk can have a fast and strong direct effect on amount and distribution of phenotypes within a prey population. The results further suggest that balance and use of anti-predator strategies on different response levels may be differential over age-classes in European perch. (C) 2013 Elsevier GmbH. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Heynen, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Rentrop, I. UNSPECIFIED UNSPECIFIED UNSPECIFIED Borcherding, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-451576
DOI:	10.1016/j.limno.2013.06.003
Journal or Publication Title:	Limnologica
Volume:	44
Page Range:	S. 32 - 40
Date:	2014
Publisher:	ELSEVIER GMBH
Place of Publication:	MUNICH
ISSN:	1873-5851
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SIZE-DEPENDENT PREDATION; THE-YEAR PERCH; PHENOTYPIC PLASTICITY; TAKING BEHAVIOR; ANTIPREDATOR RESPONSES; PUMPKINSEED SUNFISH; PIKE PREDATORS; BODY LENGTH; ALARM CUES; POPULATIONS Multiple languages Limnology Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/45157