Inheritance of migratory direction in a bird species: a cross-breeding experiment with SE- and SW-migrating blackcaps (Sylvia atricapilla)
Behavioral Ecology and SociobiologyPublished 1 January 1991
AndreasJ. Helbig
Citations287
SJR quartileQ1
SJR score0.74
SNIP0.89
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TL;DR
Results of a cross-breeding experiment between individuals of two blackcap populations with widely different migratory directions provide direct evidence for a genetic basis of migratory Directions in birds and demonstrate a phenotypically intermediate mode of inheritance.
Abstract
Young avian migrants of many species are able to find their species- or population-specific wintering area without the help of conspecifics. In orientation tests hand-raised birds have been demonstrated to choose appropriate population-specific migratory directions, suggesting a genetic basis to this behaviour. I here report results of a cross-breeding experiment between individuals of two blackcap (Sylvia atricapilla) populations with widely different migratory directions. The orientation of the F1 offspring was intermediate between and significantly different from that of both parental populations (Fig. 2). The variance of individual mean directions in the F1 generation did not increase compared with the parental groups, and the inheritance of migratory directions was not sex-linked. The data provide direct evidence for a genetic basis of migratory directions in birds and demonstrate a phenotypically intermediate mode of inheritance.
Keywords
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