{"title":"Detection of Extra-Pair Paternity in Captive Gentoo Penguins Using Genetic Analysis.","authors":"Sora Shimura, Yosuke Zaitsu, Ryo Tadano","doi":"10.1002/zoo.70032","DOIUrl":null,"url":null,"abstract":"<p><p>Molecular genetic studies have revealed extra-pair paternity (EPP) in monogamous avian species including several penguin species. Therefore, this study investigated the parentage of captive gentoo penguins (Pygoscelis papua) in Japanese zoos and aquariums by analyzing 10 microsatellite loci. A total of 200 relationships between parents and offspring from the studbook were created through behavioral observations. Three of these cases (1.5%) showed mismatched genotypes between the father and offspring in at least three loci, thereby suggesting the possibility of EPP. In two of the three cases, the true (genetic) fathers were inferred from male individuals who lived with their mothers during the breeding season. The EPP frequency in the captive population was lower than that previously reported for wild populations. The results of this study demonstrate that the genetic approach effectively validated the accuracy for studbook of captive avian species.</p>","PeriodicalId":24035,"journal":{"name":"Zoo Biology","volume":" ","pages":""},"PeriodicalIF":1.4000,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Zoo Biology","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1002/zoo.70032","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"VETERINARY SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
Molecular genetic studies have revealed extra-pair paternity (EPP) in monogamous avian species including several penguin species. Therefore, this study investigated the parentage of captive gentoo penguins (Pygoscelis papua) in Japanese zoos and aquariums by analyzing 10 microsatellite loci. A total of 200 relationships between parents and offspring from the studbook were created through behavioral observations. Three of these cases (1.5%) showed mismatched genotypes between the father and offspring in at least three loci, thereby suggesting the possibility of EPP. In two of the three cases, the true (genetic) fathers were inferred from male individuals who lived with their mothers during the breeding season. The EPP frequency in the captive population was lower than that previously reported for wild populations. The results of this study demonstrate that the genetic approach effectively validated the accuracy for studbook of captive avian species.
期刊介绍：
Zoo Biology is concerned with reproduction, demographics, genetics, behavior, medicine, husbandry, nutrition, conservation and all empirical aspects of the exhibition and maintenance of wild animals in wildlife parks, zoos, and aquariums. This diverse journal offers a forum for effectively communicating scientific findings, original ideas, and critical thinking related to the role of wildlife collections and their unique contribution to conservation.
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