Evol Ecol Res 15: 437-451 (2013) Full PDF if your library subscribes.
Can ecotypic differences in male courtship behaviour be explained by visual cues provided by female threespine stickleback?
Lily C. Hughes, Susan A. Foster and John A. Baker
Department of Biology, Clark University, Worcester, Massachusetts, USA
Correspondence: L.C. Hughes, Department of Biological Sciences, The George Washington University, Washington, DC 20052, USA.
Background: Research on the evolution of reproductive isolation concentrates on an evaluation of the probability of mating within and between species with little attention to the role of male and female mate choice in the process. Male threespine stickleback, as well as females, select mates but male choice behaviour is poorly understood. Male threespine stickleback use visual cues in courting females, and have been shown to prefer females with more distended abdomens, which may indicate higher fecundity.
Question: Do male threespine stickleback from divergent allopatric populations prefer females of their own ecotype using visual cues from live females?
Hypothesis: Males will court females of their own ecotype more vigorously than they do females of the other ecotype. Males will also prefer females who are more fecund.
Organisms: Allopatric populations of anadromous, benthic, and limnetic threespine stickleback.
Methods: We presented males with the opportunity to court two females, one from a benthic population and one from a limnetic population. During 5-min trials, we recorded the following behaviours: zigzags, direct approaches, and the time a male spent following each female.
Results: Visual cues were not sufficient to elicit male courtship differences towards females of different ecotypes. However, contrary to expectations, males reduced their courtship toward females with a higher estimated fecundity.
Keywords: allopatric differentiation, ecological speciation, male mate choice, parallel evolution, threespine stickleback.
DOWNLOAD A FREE, FULL PDF COPY
IF you are connected using the IP of a subscribing institution (library, laboratory, etc.)
or through its VPN.
© 2013 Lily C. Hughes. All EER articles are copyrighted by their authors. All authors endorse, permit and license Evolutionary Ecology Ltd. to grant its subscribing institutions/libraries the copying privileges specified below without additional consideration or payment to them or to Evolutionary Ecology, Ltd. These endorsements, in writing, are on file in the office of Evolutionary Ecology, Ltd. Consult authors for permission to use any portion of their work in derivative works, compilations or to distribute their work in any commercial manner.
Subscribing institutions/libraries may grant individuals the privilege of making a single copy of an EER article for non-commercial educational or non-commercial research purposes. Subscribing institutions/libraries may also use articles for non-commercial educational purposes by making any number of copies for course packs or course reserve collections. Subscribing institutions/libraries may also loan single copies of articles to non-commercial libraries for educational purposes.
All copies of abstracts and articles must preserve their copyright notice without modification.