ANALYSIS OF A CULTURAL TRAIT ACROSS AN AVIAN HYBRID ZONE: GEOGRAPHIC VARIATION IN PLUMAGE MORPHOLOGY AND VOCAL TRAITS IN THE AUSTRALIAN RINGNECK PARROT (PLATYCERCUS ZONARIUS)

Autor:	Myron C. Baker
Rok vydání:	2008
Předmět:	Hybrid zone Flight call Taxon Plumage Trait Zoology Platycercus zonarius Animal Science and Zoology Biology Subspecies biology.organism_classification Ecology Evolution Behavior and Systematics Hybrid
Zdroj:	The Auk. 125:651-662
ISSN:	1938-4254 0004-8038
DOI:	10.1525/auk.2008.07111
Popis:	Two morphologically distinct subspecies of the Australian Ringneck Parrot (Platycercus zonarius) meet in a zone of hybridization in southwestern Western Australia. Individuals produce a flight call, a learned vocal signal used by a mated pair to maintain contact and coordinate their movements. I asked how the learned vocal signal covaried geographically with morphology. Across the distributions of the parental taxa and within the hybrid zone, I tape-recorded 398 birds in 38 locations and scored plumage traits. I found that the parental taxa exhibit a discrete difference in their flight calls, but within each of the parental taxa there also were local dialects. There were dialects in the hybrid zone as well, where individuals at a site shared the same type of flight call whether they displayed plumage phenotypes of parental taxa or of hybrids. In the hybrid zone, populations tended to have a form of the flight call intermediate between parental taxa, though the form of the call was more strongly i...
Databáze:	OpenAIRE
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