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« Previous AbstractPlant-plant signaling: ethylene synergizes volatile emission in Zea mays induced by exposure to (Z)-3-hexen-1-ol    Next AbstractPheromone communication in Nasonia vitripennis: abdominal sex attractant mediates site fidelity of releasing males »

Proc Biol Sci


Title:Quantity matters: male sex pheromone signals mate quality in the parasitic wasp Nasonia vitripennis
Author(s):Ruther J; Matschke M; Garbe LA; Steiner S;
Address:"Institut fur Biologie, Freie Universitat Berlin, 12163 Berlin, Germany. ruther@zedat.fu-berlin.de"
Journal Title:Proc Biol Sci
Year:2009
Volume:20090617
Issue:1671
Page Number:3303 - 3310
DOI: 10.1098/rspb.2009.0738
ISSN/ISBN:0962-8452 (Print) 1471-2954 (Electronic) 0962-8452 (Linking)
Abstract:"Sexual selection theory asserts that females are well adapted to sense signals indicating the quality of potential mates. One crucial male quality parameter is functional fertility (i.e. the success of ejaculates in fertilizing eggs). The phenotype-linked fertility hypothesis (PLFH) predicts that functional fertility of males is reflected by phenotypic traits that influence female mate choice. Here, we show for Nasonia vitripennis, a parasitic wasp with haplodiploid sex determination and female-biased sex ratios, that females use olfactory cues to discriminate against sperm-limited males. We found sperm limitation in newly emerged and multiply mated males (seven or more previous matings) as indicated by a higher proportion of sons in the offspring fathered by these males. Sperm limitation correlated with clearly reduced pheromone titres. In behavioural bioassays, females oriented towards higher doses of the synthetic pheromone and were attracted more often to scent marks of males with a full sperm load than to those of sperm-limited males. Our data support the PLFH and suggest that N. vitripennis females are able to decrease the risk of getting constrained to produce suboptimal offspring sex ratios by orienting towards gradients of the male sex pheromone"
Keywords:"Animals Cues Female Fertility Male Mating Preference, Animal/*drug effects Sex Attractants/metabolism/pharmacology/*physiology Sex Ratio Smell Stimulation, Chemical Wasps/drug effects/metabolism/*physiology;"
Notes:"MedlineRuther, Joachim Matschke, Michael Garbe, Leif-Alexander Steiner, Sven eng Research Support, Non-U.S. Gov't England 2009/06/19 Proc Biol Sci. 2009 Sep 22; 276(1671):3303-10. doi: 10.1098/rspb.2009.0738. Epub 2009 Jun 17"

 
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