Abstract:
:More than 90% of birds are socially monogamous, although genetic studies indicate that many are often not sexually monogamous. In the present study, DNA fingerprinting was used to estimate the genetic relationships between nestlings belonging to the same broods to evaluate the mating system in the socially monogamous macaw, Ara ararauna. We found that in 10 of 11 broods investigated, the nestlings showed genetic similarity levels congruent with values expected among full-sibs, suggesting that they shared the same parents. However, in one brood, the low genetic similarity observed between nestlings could be a result of intraspecific brood parasitism, intraspecific nest competition or extra-pair paternity. These results, along with available behavioral and life-history data, imply that the blue-and-yellow macaw is not only socially, but also genetically monogamous. However, the occurrence of eventual cases of extra-pair paternity cannot be excluded.
journal_name
Genet Mol Bioljournal_title
Genetics and molecular biologyauthors
Caparroz R,Miyaki CY,Baker AJdoi
10.1590/S1415-47572010005000112subject
Has Abstractpub_date
2011-01-01 00:00:00pages
161-4issue
1eissn
1415-4757issn
1678-4685pii
gmb-34-1-161journal_volume
34pub_type
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