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Breeding biology of two wagtail subspecies on Ulleung Island, Korea: Amur Wagtails, Motacilla alba leucopsis and Black-backed Wagtails, M. a. lugens

Animal Cells and Systems 2018년 22권 4호 p.259 ~ 266
이지영, 박진영, 김인철, 김우열, 성하철,
소속 상세정보
이지영 ( Lee Ji-Young ) - Chonnam National University School of Biological Sciences and Biotechnology
박진영 ( Park Jin-Young ) - National institute of Environmental Research
김인철 ( Kim In-Cheol ) - Chonnam National University School of Biological Sciences and Biotechnology
김우열 ( Kim Woo-Yuel ) - Chonnam National University School of Biological Sciences and Biotechnology
성하철 ( Sung Ha-Cheol ) - Chonnam National University College of Natural Sciences Department of Biological Sciences

Abstract


There is much controversy over the species and subspecies status of the white wagtail complex, which is further compounded by interbreeding between two subspecies, the Amur Wagtail (Motacilla alba leucopsis) and the Black-backed Wagtail (M. a. lugens). This study presents preliminary information on the breeding biology of both subspecies on Ulleung Island, Korea, over two breeding seasons (2012?2013). Mixed pairs of the two subspecies were common on this island, with almost 50% of all pairs being heterotypic or intermediate pairs; however, assortative mating was still present. Females of both subspecies were more likely to be paired with Amur wagtail males, whereas intermediate females were more likely to be paired with Black-backed Wagtail males. Clutch size, egg size and mass, and reproductive parameters (such as hatching success and nest success) did not significantly differ from each other. However, the mean values were low in intermediate pairs. Our results indicate no reproductive barrier between the two subspecies, but that some post-isolating mechanisms are still in progress.

키워드

Breeding pairs; hybridization; reproductive success; taxonomic status; white wagtail complex

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