Non-random mating in classical lekking grouse species: seasonal and diurnal trends |
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| Authors: | L J S Tsuji G DeIuliis R I C Hansell D R Kozlovic M B Sokolowski |
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| Institution: | (1) Department of Environment and Resource Studies, University of Waterloo, Waterloo, Ontario, N2L 3GI, Canada, CA;(2) Department of Zoology, University of Toronto, Toronto, Ontario, M5S 1A1, Canada, CA;(3) Department of Zoology, University of Toronto at Mississauga, Mississauga, Ontario, L5L 1C6, Canada, CA;(4) Department of Environment and Resource Studies, University of Waterloo, Waterloo, Ontario, N2L 3GI, Canada Tel.: +1-519-888-4567, Fax: +1-519-746-0292, CA |
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| Abstract: | This paper is the first to integrate both field and theoretical approaches to demonstrate that fertility benefits can be a
direct benefit to females mating on the classical lek. Field data collected for male sharp-tailed grouse (Tympanuchus phasianellus), a classical lekking species, revealed potential fertility benefits for selective females. Adult males and individuals occupying
centrally located territories on the lek were found to have significantly larger testes than juveniles and peripheral individuals.
Further, using empirical data from previously published studies of classical lekking grouse species, time-series analysis
was employed to illustrate that female mating patterns, seasonal and daily, were non-random. We are the first to show that
these patterns coincide with times when male fertility is at its peak.
Received: 26 February 1999 / Revised: 13 December 1999 / Accepted: 15 March 2000 |
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| Keywords: | Grouse Fertility Time-series analysis |
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