« Previous AbstractVaccImm: simulating peptide vaccination in cancer therapy    Next AbstractPrecursors for cytochrome P450 profiling breath tests from an in silico screening approach »

J Chem Ecol

Title:		Predator-induced diel vertical migration inDaphnia: Enrichment and preliminary chemical characterization of a kairomone exuded by fish
Author(s):		von Elert E; Loose CJ;
Address:		"Max Planck Institute for Limnology, Postfach 165, 24302, Plon, Germany"
Journal Title:		J Chem Ecol
Year:		1996
Volume:		22
Issue:		5
Page Number:		885 - 895
DOI:		10.1007/BF02029942
ISSN/ISBN:		0098-0331 (Print) 0098-0331 (Linking)
Abstract:		"Planktivorous fish release a cue of an unknown chemical nature into the water that induces diel vertical migration inDaphnia as predator avoidance response. We used a bioassay to obtain information about the chemical nature of the kairomone. We present a method to enrich the cue from holding water of fish by sorbent extraction. The kairomone exuded byLeucaspius delineatus can be characterized as a nonolefinic low-molecular-weight anion of intermediate lipophilicity. The presence of amino groups in the molecule can be excluded, whereas hydroxy groups are essential for activity. Separation by HPLC yielded only one active fraction. The kairomones released byCarassius carassius andRutilus rutilus showed the same chemical characteristics, suggesting that the kairomones from different species of fish, sensed byDaphia, are very similar, if not identical"
Keywords:
Notes:		"PubMed-not-MEDLINEvon Elert, E Loose, C J eng 1996/05/01 J Chem Ecol. 1996 May; 22(5):885-95. doi: 10.1007/BF02029942"