TY - JOUR
T1 - Trade up polygyny and breeding synchrony in avian populations
AU - Fishman, Michael A.
AU - Stone, Lewi
N1 - Funding Information:
The research reported in this paper was funded by The Israeli Academy of Sciences and Humanities, grant#524/00-17.2. We are grateful to the James S. McDonnell Foundation for its generous support. We would like to thank the unknown referees for productive suggestions.
PY - 2006/1/7
Y1 - 2006/1/7
N2 - The advent of the molecular techniques used to assign paternity has focused attention on the differences between the social and the genetic mating systems of sexual species. In particular, the interrelations between breeding synchrony - the degree to which the fertility periods of individual females in a population overlap and the degree of extrapair paternity (EPP) in that population, has became a subject of a lively debate. Investigation of the subject can be facilitated by examining the criteria that females use in choosing extrapair partners. These preferences constitute a continuum ranging between two extremes. At one end, there are situations wherein all the females in a population exhibit a preference for males with particular phenotypic markers, and females mated to males lacking such "quality" markers seek extrapair fertilizations from males that do - trade up polygyny. At the other extreme, there are situations wherein females seek to maximize the total number of male partners, rather than secure fertilization by males of particular type - indiscriminate polygyny. Previously, we used game theoretical methods to model the interrelations between breeding synchrony and EPP in the context of indiscriminate polygyny. Here we present an analogous investigation in the context of trade up polygyny. Our results for the two cases, which delimit the range of the possible behavior, are similar. That is, we see that it is the pursuit of extrapair fertilizations opportunities that determines breeding synchrony of populations, rather than the vice versa as has been previously suggested.
AB - The advent of the molecular techniques used to assign paternity has focused attention on the differences between the social and the genetic mating systems of sexual species. In particular, the interrelations between breeding synchrony - the degree to which the fertility periods of individual females in a population overlap and the degree of extrapair paternity (EPP) in that population, has became a subject of a lively debate. Investigation of the subject can be facilitated by examining the criteria that females use in choosing extrapair partners. These preferences constitute a continuum ranging between two extremes. At one end, there are situations wherein all the females in a population exhibit a preference for males with particular phenotypic markers, and females mated to males lacking such "quality" markers seek extrapair fertilizations from males that do - trade up polygyny. At the other extreme, there are situations wherein females seek to maximize the total number of male partners, rather than secure fertilization by males of particular type - indiscriminate polygyny. Previously, we used game theoretical methods to model the interrelations between breeding synchrony and EPP in the context of indiscriminate polygyny. Here we present an analogous investigation in the context of trade up polygyny. Our results for the two cases, which delimit the range of the possible behavior, are similar. That is, we see that it is the pursuit of extrapair fertilizations opportunities that determines breeding synchrony of populations, rather than the vice versa as has been previously suggested.
KW - Better genes
KW - Breeding synchrony
KW - ESS
KW - Evolutionary game theory
KW - Extrapair fertilizations
KW - Extrapair paternity
KW - Polyandry
UR - http://www.scopus.com/inward/record.url?scp=28444443437&partnerID=8YFLogxK
U2 - 10.1016/j.jtbi.2005.05.012
DO - 10.1016/j.jtbi.2005.05.012
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AN - SCOPUS:28444443437
SN - 0022-5193
VL - 238
SP - 104
EP - 110
JO - Journal of Theoretical Biology
JF - Journal of Theoretical Biology
IS - 1
ER -