Low levels of hybridization between domestic and wild Mallards wintering in the lower Mississippi Flyway
نویسندگان
چکیده
Abstract The Mallard (Anas platyrhynchos) duck is a ubiquitous and socio-economically important game bird in North America. Despite their generally abundant midcontinent population, Mallards eastern America are declining, which may be partially explained by extensive hybridization with human-released domestically derived game-farm Mallards. We investigated the genetic composition of middle lower Mississippi flyway, key wintering regions for species. found that nearly 30% wild carried mitochondrial (mtDNA) haplotypes from domestic present America, indicating individuals had female lineage past; however, nuclear results identified only 4% same sample set as putative hybrids. Recovering samples Old World (OW) A mtDNA concordant general trends across flyway this percentage was stable we sampled decade apart. capture perpetuation OW likely due to breeding structure, whereas reversal signal back ancestry sequential backcrossing and/or declining admixture Future studies will benefit coupling molecular spatial technology flyways, seasons, years search potential transitions populations different ancestry, whether somehow linked an individual’s natal subsequent location.
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ژورنال
عنوان ژورنال: The Auk
سال: 2022
ISSN: ['1938-4254', '0004-8038']
DOI: https://doi.org/10.1093/ornithology/ukac034