{"entity": "publication", "iuid": "21ec16b6dbbb4b1694e6cced100b7164", "timestamp": "2026-09-30T15:38:39.710Z", "links": {"self": {"href": "https://publications-affiliated.scilifelab.se/publication/21ec16b6dbbb4b1694e6cced100b7164.json"}, "display": {"href": "https://publications-affiliated.scilifelab.se/publication/21ec16b6dbbb4b1694e6cced100b7164"}}, "title": "Extra-pair paternity as a strategy to reduce the costs of heterospecific reproduction? Insights from the crow hybrid zone.", "authors": [{"family": "Knief", "given": "Ulrich", "initials": "U", "orcid": "0000-0001-6959-3033", "researcher": {"href": "https://publications-affiliated.scilifelab.se/researcher/41faddaa4cc1445e854ba4a62298507d.json"}}, {"family": "Bossu", "given": "Christen M", "initials": "CM", "orcid": "0000-0002-0458-9305", "researcher": {"href": "https://publications-affiliated.scilifelab.se/researcher/b38296ce4bd14249a6864272e8094dd4.json"}}, {"family": "Wolf", "given": "Jochen B W", "initials": "JBW", "orcid": "0000-0002-2958-5183", "researcher": {"href": "https://publications-affiliated.scilifelab.se/researcher/d1004f304db34314a61ca1fa0ee028b2.json"}}], "type": "journal article", "published": "2020-05-00", "journal": {"title": "J Evol Biol", "issn": "1420-9101", "volume": "33", "issue": "5", "pages": "727-733", "issn-l": null}, "abstract": "Within hybrid zones of socially monogamous species, the number of mating opportunities with a conspecific can be limited. As a consequence, individuals may mate with a heterospecific (social) partner despite possible fitness costs to their hybrid offspring. Extra-pair copulations with a conspecific may thus arise as a possible post hoc strategy to reduce the costs of hybridization. We here assessed the rate of extra-pair paternity in the hybrid zone between all-black carrion crows (Corvus (corone) corone) and grey hooded crows (C. (c.) cornix) and tested whether extra-pair paternity (EPP) was more likely in broods where parents differed in plumage colour. The proportion of broods with at least one extra-pair offspring and the proportion of extra-pair offspring were low overall (6.98% and 2.90%, respectively) with no evidence of hybrid broods having higher EPP rates than purebred nests.", "doi": "10.1111/jeb.13607", "pmid": "32069366", "labels": [], "xrefs": [], "notes": [], "created": "2026-09-23T13:05:44.664Z", "modified": "2026-09-23T13:05:44.760Z"}