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Response to chemical cues from conspecifics reflects male mating preference for large females and avoidance of large competitors in the European pond turtle, Emys orbicularis
University of Hamburg. (Biozentrum Grindel)
University of Hamburg. (Department of Animal Ecology and Conservation, Biozentrum Grindel,)
University of Potsdam. (Evolutionary Biology and Systematic Zoology, Department of Biochemistry and Biology)
2006 (English)In: Behaviour, ISSN 0005-7959, E-ISSN 1568-539X, Vol. 143, 569-587 p.Article in journal (Refereed) Published
Abstract [en]

We examined chemical communication in male and female European pond turtles (Emys orbicularis). In simultaneous binary choice tests, a focal animal was given a choice between pheromones from a conspecific and a choice chamber containing untreated water. Females did not show a preference, both when male and when female stimuli were presented. On the contrary, males preferred the odor of a female over untreated water, suggesting that males actively search for females. The strength of preference was positively correlated with the body size difference between the female and the focal male, indicating that males prefer to mate with larger females. Female fecundity is positively correlated with female size in E. orbicularis, which may account for male choosiness. No overall preference for the stimulus animal was observed when males were presented cues from another male. However, the strength of preference was negatively correlated with the difference in body size. Males avoided large males, but oriented towards smaller stimulus males. This reflects that males form dominance hierarchies, where large males aggressively attack smaller ones. Far-range chemical communication probably enables males to minimize the risk of costly aggressive interactions. This is, to our knowledge, the first study on the role of chemical cues for inter-and intrasexual communication in the European pond turtle.

Place, publisher, year, edition, pages
2006. Vol. 143, 569-587 p.
National Category
Natural Sciences
URN: urn:nbn:se:uu:diva-215498DOI: 10.1163/156853906776759510ISI: 000238483900002OAI: oai:DiVA.org:uu-215498DiVA: diva2:687473
Available from: 2014-01-14 Created: 2014-01-14 Last updated: 2014-01-14

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Meyer-Lucht, Yvonne
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