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Article Dans Une Revue The Auk Année : 2000

Genetic relationships of Cory's shearwater: Parentage, mating assortment, and geographic differentiation revealed by DNA fingerprinting.

Résumé

We used DNA fingerprinting to assess genetic structure of populations in Cory's Shearwater (Calonectris diomedea). We analyzed mates and parent-offspring relationships, as well as the amount and distribution of genetic variation within and among populations, from the level of subcolony to subspecies. We found no evidence of extrapair fertilization, confirming that the genetic breeding system matches the social system that has been observed in the species. Mates were closely related, and the level of genetic relatedness within populations was within the range usually found in inbred populations. In contrast to previous studies based on allozymes and mtDNA polymorphism, DNA fingerprinting using microsatellites revealed consistent levels of genetic differentiation among populations.However, analyzing the two subspecies separately revealed that the pattern of genetic variation among populations did not support the model of isolation by distance. Natal dispersal, as well as historic and/or demographic events, probably contributed to shape the genetic structure of populations in the species.
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Dates et versions

hal-00193559 , version 1 (04-12-2007)

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  • HAL Id : hal-00193559 , version 1

Citer

Corinne Rabouam, Vincent Bretagnolle, Yves Bigot, Georges Périquet. Genetic relationships of Cory's shearwater: Parentage, mating assortment, and geographic differentiation revealed by DNA fingerprinting.. The Auk, 2000, 117, pp.651-662. ⟨hal-00193559⟩

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