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Extra-pair paternity in waved albatrosses.

K P Huyvaert1, D J Anderson, T C Jones

  • 1Department of Biology, Wake Forest University, Winston-Salem NC 27109, USA. huyvaert.1@osn.edu

Molecular Ecology
|September 6, 2000
PubMed
Summary
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Extra-pair fertilizations (EPFs) are common in waved albatrosses, a socially monogamous seabird. Genetic analysis revealed EPFs in four of 16 families, suggesting a high rate in this species.

Area of Science:

  • Ornithology
  • Behavioral Ecology
  • Conservation Genetics

Background:

  • Waved albatrosses (Phoebastria irrorata) are long-lived, socially monogamous seabirds.
  • Aggressive extra-pair copulation (EPC) attempts have been observed in breeding waved albatrosses.

Purpose of the Study:

  • To estimate the rate of extra-pair fertilizations (EPFs) in waved albatrosses.
  • To investigate the occurrence of EPFs in a population on Isla Española, Galápagos.

Main Methods:

  • Multilocus minisatellite DNA fingerprinting was used for genetic analysis.
  • 16 families, including single chicks and attending parents, were analyzed.

Main Results:

  • Evidence of EPFs was found in four out of 16 analyzed families.

Related Experiment Videos

  • In all identified EPF cases, the attending male was not the genetic father.

    • Conclusions:

    • Waved albatrosses exhibit a high rate of EPFs compared to related species.
    • Further behavioral studies are needed to distinguish between forced and unforced EPCs.