Does migration of hybrids contribute to post-zygotic isolation in flycatchers? Veen, Thor, Svedin, Nina, Forsman, Jukka T., Hjernquist, Mårten B., Qvarnström, Anna, Thuman Hjernquist, Katherine A., Träff, Johan and Klaassen, Marcel 2007, Does migration of hybrids contribute to post-zygotic isolation in flycatchers?, Proceedings of the Royal Society B-biological sciences, vol. 274, no. 1610, pp. 707-712. Attached Files Name Description MIMEType Size Downloads Title Does migration of hybrids contribute to post-zygotic isolation in flycatchers? Author(s) Veen, Thor Svedin, Nina Forsman, Jukka T. Hjernquist, Mårten B. Qvarnström, Anna Thuman Hjernquist, Katherine A. Träff, Johan Klaassen, Marcel orcid.org/0000-0003-3907-9599 Journal name Proceedings of the Royal Society B-biological sciences Volume number 274 Issue number 1610 Start page 707 End page 712 Publisher The Royal Society Place of publication London, England Publication date 2007-03-07 ISSN 0962-8452 1471-2954 Keyword(s) migration stable isotopes hybridization extrinsic post-zygotic isolation wintering grounds Summary In the face of hybridization, species integrity can only be maintained through post-zygotic isolating barriers (PIBs). PIBs need not only be intrinsic (i.e. hybrid inviability and sterility caused by developmental incompatibilities), but also can be extrinsic due to the hybrid's intermediate phenotype falling between the parental niches. For example, in migratory species, hybrid fitness might be reduced as a result of intermediate migration pathways and reaching suboptimal wintering grounds. Here, we test this idea by comparing the juvenile to adult survival probabilities as well as the wintering grounds of pied flycatchers (Ficedula hypoleuca), collared flycatchers (Ficedula albicollis) and their hybrids using stable isotope ratios of carbon (δ13C) and nitrogen (δ15N) in feathers developed at the wintering site. Our result supports earlier observations of largely segregated wintering grounds of the two parental species. The isotope signature of hybrids clustered with that of pied flycatchers. We argue that this pattern can explain the high annual survival of hybrid flycatchers. Hence, dominant expression of the traits of one of the parental species in hybrids may substantially reduce the ecological costs of hybridization. Language eng Field of Research 060801 Animal Behaviour Socio Economic Objective 970106 Expanding Knowledge in the Biological Sciences HERDC Research category C1.1 Refereed article in a scholarly journal Copyright notice ©2006, The Royal Society Persistent URL http://hdl.handle.net/10536/DRO/DU:30035102 Document type: Journal Article Collections: School of Life and Environmental Sciences Centre for Integrative Ecology Related Links Link Description Connect to published version (restricted access) Go to link with your DU access privileges     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Versions Version Filter Type Mon, 30 May 2011, 10:59:52 EST Mon, 25 Jul 2011, 11:44:01 EST Mon, 25 Jul 2011, 11:57:13 EST Mon, 25 Jul 2011, 11:58:44 EST Filtered Full Citation counts:   Cited 22 times in TR Web of Science Cited 19 times in Scopus Search Google Scholar Access Statistics: 263 Abstract Views, 0 File Downloads  -  Detailed Statistics Created: Mon, 30 May 2011, 10:59:52 EST

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