Universität zu Köln

Christjani, Mark and Von Elert, Eric (2015). Prey-induced vertical migration in Chaoborus larvae under different predator and light regimes. J. Plankton Res., 37 (1). S. 48 - 56. OXFORD: OXFORD UNIV PRESS. ISSN 1464-3774

Full text not available from this repository.

Abstract

For freshwater prey like Daphnia and larvae of Chaoborus, it is well documented that they adjust their residence depth in the water column in response to predator kairomones in order to decrease encounter probability with the respective predator. Despite the importance of infochemicals in predator-prey interactions, it has not been tested if predators adjust their residence depth in response to infochemicals released by prey. Here, we use an indoor system with a stratified water column and show that the predatory phantom midge Chaoborus prefers strata with Daphnia incubation water over strata with control water. Further, the chemically mediated effect of a top predator (fish) on this system was shown to be light dependent with Chaoborus avoiding prey-conditioned water when it also contained fish kairomone in brighter surface water, but not in deeper and thus darker water layers. The foraging kairomone released by Daphnia can be extracted from incubation water via C-18-based solid-phase extraction. These results add another dimension to the steering role of infochemicals in predator-prey interactions in zooplankton.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Christjani, Mark UNSPECIFIED UNSPECIFIED UNSPECIFIED Von Elert, Eric UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-417161
DOI:	10.1093/plankt/fbu086
Journal or Publication Title:	J. Plankton Res.
Volume:	37
Number:	1
Page Range:	S. 48 - 56
Date:	2015
Publisher:	OXFORD UNIV PRESS
Place of Publication:	OXFORD
ISSN:	1464-3774
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language PRELIMINARY CHEMICAL-CHARACTERIZATION; DAPHNIA-PULEX; DEPTH-SELECTION; KAIROMONE; FISH; ENRICHMENT; FLAVICANS; ZOOPLANKTON; WATER Multiple languages Marine & Freshwater Biology; Oceanography Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/41716