Interspecific brood parasitism in blackbirds (icterinae): A phylogenetic perspective

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An 852-base pair region of the cytochrome-b gene was sequenced for the brood parasitic cowbirds and 20 additional taxa of the New World blackbirds (Icterinae). The goal of the study was to determine (i) whether interspecific brood parasitism is multiply derived within the assemblage and (ii) the nature of the evolutionary transformation between various forms of interspecific brood parasitism. Cladistic analysis of the sequence data indicates that brood parasitism evolved a single time within the Icterinae. The primitive form of interspecific brood parasitism in this assemblage is host-specificity, with host-generality representing the derived condition.

Original languageEnglish (US)
Pages (from-to)77-79
Number of pages3
Issue number5040
StatePublished - 1992
Externally publishedYes


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