Heterospecific pairing and hybridization between wild humboldt and magellanic Penguins in Southern Chile

Alejandro Simeone, Luciano Hiriart-Bertrand, Ronnie Reyes-Arriagada, Micah Halpern, Jean Dubach, Roberta Wallace, Klemens Pütz, Benno Lüthi

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

14 Citas (Scopus)

Resumen

The Humboldt (Spheniscus humboldti) and Magellanic (S. magellanicus) Penguins overlap over 1100 km along the coast of the southeastern Pacific Ocean, and much has been hypothesized about hybridization between them. We visited Puñihuil and Metalqui islands, southern Chile (41-42° S), where both species form mixed colonies; these are also the Humboldt Penguin's southernmost colonies. We observed one mixed pair attending chicks and two adults of intermediate color pattern, one of which tended a chick at a nest. Additionally, on the basis of analysis of 30 blood samples of Humboldt Penguins from the Puñihuil colony, we report the first documented Humboldt × Magellanic Penguin hybrid. Judged from the pattern of restriction fragments, this bird had a Magellanic dam and a Humboldt sire. We sequenced mitochondrial and nuclear copies independently to confirm these results. We suggest that hybridization at Metalqui and Puñihuil is encouraged by the low abundance of the Humboldt Penguin rather than by failed mate recognition.

Idioma originalInglés
Páginas (desde-hasta)544-550
Número de páginas7
PublicaciónCondor
Volumen111
N.º3
DOI
EstadoPublicada - 2009

Áreas temáticas de ASJC Scopus

  • Ecología, evolución, comportamiento y sistemática
  • Animales y zoología

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