Genetic and temporal patterns of multiple parasitism by brown-headed cowbirds (Molothrus ater) on song sparrows (Melospiza melodia)

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dc.contributor.authorMcLaren, CM
dc.contributor.authorWoolfenden, BE
dc.contributor.authorGibbs, HL
dc.contributor.authorSealy, SG
dc.date.accessioned2008-03-07T22:38:03Z
dc.date.available2008-03-07T22:38:03Z
dc.date.issued2003-02-28
dc.description.abstractIdentifying the factors used by an avian brood parasite to select host nests is important in understanding the determinates of individual reproductive success, yet such factors are poorly known for most parasitic species. Insights into these factors may come from understanding the conditions under which female parasites lay more than one egg per host nest (multiple parasitism). Using genetic techniques we examined patterns of multiple parasitism on a preferred host, the song sparrow (Melospiza melodia), to determine some basic patterns of multiple parasitism. Multiple parasitism involved equal frequencies of the same female parasitizing the same nest again and two or more females parasitizing the same nest. The frequency of multiple parasitism increased as the season progressed. We also documented a high frequency of parasitism that was not synchronized with host laying. These laying patterns may be the result of cowbirds "making the best of a bad situation" or of suboptimal host choice by inexperienced, nonselective females.en
dc.format.extent46984 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.citation0008-4301; CAN J ZOOL, FEB 2003, vol. 81, no. 2, p.281 to 286.en
dc.identifier.doihttp://dx.doi.org/10.1139/z03-002
dc.identifier.urihttp://hdl.handle.net/1993/3022
dc.language.isoengen_US
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dc.rightsopen accessen_US
dc.statusPeer revieweden
dc.subjectMICROSATELLITE DNA MARKERSen
dc.subjectCUCKOO CLAMATOR GLANDARIUSen
dc.subjectBROOD PARASITISMen
dc.subjectREPRODUCTIVE SUCCESSen
dc.subjectWINGED BLACKBIRDSen
dc.subjectYELLOW WARBLERen
dc.subjectBEHAVIORen
dc.subjectEGGSen
dc.subjectSYSTEMen
dc.subjectHOSTSen
dc.titleGenetic and temporal patterns of multiple parasitism by brown-headed cowbirds (Molothrus ater) on song sparrows (Melospiza melodia)en
dc.typejournal articleen_US
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