Cooperative Breeding and Long-Distance Dispersal: A Test Using Vagrant RecordsReport as inadecuate




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Cooperative breeding is generally associated with increased philopatry and sedentariness, presumably because short-distance dispersal facilitates the maintenance of kin groups. There are, however, few data on long-distance dispersal in cooperative breeders—the variable likely to be important for genetic diversification and speciation. We tested the hypothesis that cooperative breeders are less likely to engage in long-distance dispersal events by comparing records of vagrants outside their normal geographic range for matched pairs cooperatively vs. non-cooperatively breeding of North American species of birds. Results failed to support the hypothesis of reduced long-distance dispersal among cooperative breeders. Thus, our results counter the conclusion that the lower rate of speciation among cooperative breeding taxa found in recent analyses is a consequence of reduced vagility.



Author: Caroline L. Rusk, Eric L. Walters , Walter D. Koenig

Source: http://plos.srce.hr/



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