{"title":"Group-spawning and Simultanous Polyandry of a Stream-dwelling Frog Feirana kangxianensis","authors":"Jie Wang, F. Xie, Gang Wang, Jianping Jiang","doi":"10.3724/SP.J.1245.2014.00240","DOIUrl":null,"url":null,"abstract":"Here we provide an example of simultaneous polyandry based on genetic evidence in Feirana kangxianensis. This stream-dwelling species occurs only in Kangxian County, southern Gansu Province, where it is sympatric with its sibling species F quadranus. During the breeding season the sex ratio of F kangxianensis was marginally female-biased (44 male:59 female) and the encounter rate in a relatively pristine habitat was significantly higher than that in heavily quarried habitats (9.6 +/- 4.8 indiv./km vs. 3.2 +/- 2.5 indiv./km). Three egg masses containing an average of 698 eggs were deposited on the underside of one or two adjacent flat rocks, 6.0-10.0 cm under the water surface and 1.0-3.5 cm above the streambed. Using Bayesian sibship clustering of nine polymorphic microsatellite genotypes, two females were detected as group-spawning in one oviposition site, with three males fertilizing each female's eggs simultaneously. We also discuss the conservation requirements of this range-restricted species and the evolutionary implication of its unusual reproductive strategy.","PeriodicalId":49236,"journal":{"name":"Asian Herpetological Research","volume":null,"pages":null},"PeriodicalIF":1.2000,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Asian Herpetological Research","FirstCategoryId":"1089","ListUrlMain":"https://doi.org/10.3724/SP.J.1245.2014.00240","RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ZOOLOGY","Score":null,"Total":0}
引用次数: 4
Abstract
Here we provide an example of simultaneous polyandry based on genetic evidence in Feirana kangxianensis. This stream-dwelling species occurs only in Kangxian County, southern Gansu Province, where it is sympatric with its sibling species F quadranus. During the breeding season the sex ratio of F kangxianensis was marginally female-biased (44 male:59 female) and the encounter rate in a relatively pristine habitat was significantly higher than that in heavily quarried habitats (9.6 +/- 4.8 indiv./km vs. 3.2 +/- 2.5 indiv./km). Three egg masses containing an average of 698 eggs were deposited on the underside of one or two adjacent flat rocks, 6.0-10.0 cm under the water surface and 1.0-3.5 cm above the streambed. Using Bayesian sibship clustering of nine polymorphic microsatellite genotypes, two females were detected as group-spawning in one oviposition site, with three males fertilizing each female's eggs simultaneously. We also discuss the conservation requirements of this range-restricted species and the evolutionary implication of its unusual reproductive strategy.
期刊介绍:
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