Universität zu Köln

Heynen, Martina, Bunnefeld, Nils ORCID: 0000-0002-1349-4463 and Borcherding, Jost ORCID: 0000-0003-3411-5861 (2017). Facing different predators: adaptiveness of behavioral and morphological traits under predation. Curr. Zool., 63 (3). S. 249 - 258. OXFORD: OXFORD UNIV PRESS. ISSN 2396-9814

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Abstract

Predation is thought to be one of the main structuring forces in animal communities. However, selective predation is often measured on isolated traits in response to a single predatory species, but only rarely are selective forces on several traits quantified or even compared between different predators naturally occurring in the same system. In the present study, we therefore measured behavioral and morphological traits in young-of-the-year Eurasian perch Perca fluviatilis and compared their selective values in response to the 2 most common predators, adult perch and pike Esox lucius. Using mixed effects models and model averaging to analyze our data, we quantified and compared the selectivity of the 2 predators on the different morphological and behavioral traits. We found that selection on the behavioral traits was higher than on morphological traits and perch predators preyed overall more selectively than pike predators. Pike tended to positively select shallow bodied and nonvigilant individuals (i.e. individuals not performing predator inspection). In contrast, perch predators selected mainly for bolder juvenile perch (i.e. individuals spending more time in the open, more active), which was most important. Our results are to the best of our knowledge the first that analyzed behavioral and morphological adaptations of juvenile perch facing 2 different predation strategies. We found that relative specific predation intensity for the divergent traits differed between the predators, providing some additional ideas why juvenile perch display such a high degree of phenotypic plasticity.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Heynen, Martina UNSPECIFIED UNSPECIFIED UNSPECIFIED Bunnefeld, Nils UNSPECIFIED orcid.org/0000-0002-1349-4463 UNSPECIFIED Borcherding, Jost UNSPECIFIED orcid.org/0000-0003-3411-5861 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-229205
DOI:	10.1093/cz/zow056
Journal or Publication Title:	Curr. Zool.
Volume:	63
Number:	3
Page Range:	S. 249 - 258
Date:	2017
Publisher:	OXFORD UNIV PRESS
Place of Publication:	OXFORD
ISSN:	2396-9814
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language GUPPY POECILIA-RETICULATA; STICKLEBACKS GASTEROSTEUS-ACULEATUS; SIZE-DEPENDENT PREDATION; RISK-TAKING BEHAVIOR; MULTIPLE PREDATORS; CRUCIAN CARP; ANTIPREDATOR BEHAVIOR; ONCORHYNCHUS-KISUTCH; INSPECTION BEHAVIOR; INDUCIBLE DEFENSES Multiple languages Zoology Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/22920