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首页> 外文期刊>Zoological Science >Genetic Structure and Diversity of Two Populations of the Eastern Buzzard (Buteo japonicus japonicus and B. j. toyoshimai) in Japan
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Genetic Structure and Diversity of Two Populations of the Eastern Buzzard (Buteo japonicus japonicus and B. j. toyoshimai) in Japan

机译：东秃鹰（Buteo japonicus japonicus和B.）在日本的两种群体的遗传结构和多样性

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摘要

The nominotypical subspecies of the Eastern buzzard (Buteo japonicus japonicus; BJJ) is a common raptor inhabiting East Asia and Japan. Another subspecies, B. j. toyoshimai (BJT), inhabits only the Bonin Islands of the Ogasawara Islands, where there are only an estimated 85 breeding pairs. Because of this low population size, this subspecies is classified as endangered (class IB) in Japan. The aims of the present study were to examine genetic differences between BJJ and BJT, determine the genetic structure of the Eastern Buzzard, and assess genetic diversity within each subspecies. We sequenced 1526 bp within the control region of the mtDNA of 10 BJJ individuals during the breeding season in four sites; similarly, we sequenced 23 BJJ individuals during winter in three sites. We detected 24 haplotypes among the 33 individuals. In a similar analysis performed with 12 BJT individuals, three haplotypes were detected. The phylogenetic analysis showed that BJJ and BJT have diverged into distinct clades, supporting the genetic differentiation between the subspecies. Network and mismatch distribution analyses indicated that BJJ may have experienced population expansion. In addition, comparisons with other raptors revealed a high degree of genetic diversity in the BJJ population. In contrast, the genetic diversity of the BJT population is lower than that in other raptors. Our results indicated that it is necessary to protect BJT to prevent the reduction in its genetic diversity.
机译：东北秃鹰（Buteo japonicus japonicus; BJJ）的提名型亚种是居住在东亚和日本的共同猛禽。另一个亚种，B. j。丰田（BJT）只居住在奥古斯瓦拉群岛的波宁群岛，那里只有估计的85个育种对。由于这种低人口大小，该亚种被归类为日本的濒危（IB类）。本研究的目的是研究BJJ和BJT之间的遗传差异，确定东北秃鹰的遗传结构，并评估每个亚种类内的遗传多样性。在四个地点的繁殖季节期间，我们在10个BJJ个体的MTDNA的控制区域内测序了1526bp;同样，我们在三个地点冬天测序了23个BJJ个体。我们在33个个体中检测到24个单倍型。在用12个BJT个体进行的类似分析中，检测到三个单倍型。系统发育分析表明，BJJ和BJT分散到不同的曲线中，支持亚种之间的遗传分化。网络和不匹配分布分析表明，BJJ可能经历了人口扩张。此外，与其他猛禽的比较揭示了BJJ人口的高度遗传多样性。相比之下，BJT群体的遗传多样性低于其他猛禽的遗传多样性。我们的结果表明，有必要保护BJT以防止其遗传多样性降低。

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