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首页> 外文期刊>Canadian Journal of Zoology >Implications of cytochrome b sequence variation for biogeography andconservation of the northern flying squirrels (Glaucomys sabrinus) of theAlexander Archipelago, Alaska
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Implications of cytochrome b sequence variation for biogeography andconservation of the northern flying squirrels (Glaucomys sabrinus) of theAlexander Archipelago, Alaska

机译：细胞色素b序列变异对阿拉斯加亚历山大群岛北部飞鼠（Glaucomys sabrinus）的生物地理学和自然保护的意义

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摘要

The Alexander Archipelago of southeast Alaska is a highly fragmented landscape that is suspected to support a relatively large number of endemic mammals. At least two subspecies of northern flying squirrels (Glaucomys sabrinus) have been recognized from the region, the endemic Prince of Wales Island flying squirrel, Glaucomys sabrinus griseifrons, and the Alaska Coast flying squirrel, G. s. zaphaeus. We examined 56 northern flying squirrels from Alaska, Washington State, and Yukon Territory, using the DNA sequence from the mitochondrial cytochrome b gene to assess geographic variation. Flying squirrels from Washington were highly divergent (7.3%) from those of Alaska and Yukon Territory. Variation among Alaska and Yukon Territory populations was minimal, but five haplotypes were found. One predominantly "mainland" haplotype was widespread throughout Alaska, one island haplotype was confined to nine islands in southeast Alaska ("Prince of Wales complex"), and three haplotypes were unique. Flying squirrels of the Prince of Wales complex appear to be neoendemics and descended from a single founder population. Mitochondrial variation, although minimal, is consistent with the continued recognition of G. s. griseifrons. Our results, in light of increased habitat fragmentation in southeast Alaska, suggest that molecular data can provide important base-line information for effective management of insular populations.
机译：阿拉斯加东南部的亚历山大群岛（Alexander Archipelago）是一个高度零散的景观，被怀疑可养育大量的地方性哺乳动物。至少两个亚种的北飞鼠（Glaucomys sabrinus）已从该地区得到确认，威尔士亲王岛流行的松鼠Glaucomys sabrinus griseifrons和阿拉斯加海岸的飞鼠G. s。扎菲厄斯。我们使用线粒体细胞色素b基因的DNA序列评估了来自阿拉斯加，华盛顿州和育空地区的56只北方松鼠。来自华盛顿的飞鼠与阿拉斯加和育空地区的飞鼠有很大的不同（7.3％）。阿拉斯加和育空地区人口之间的差异很小，但发现了五种单倍型。一种主要为“大陆”的单倍型分布在整个阿拉斯加，一种岛屿的单倍型仅限于阿拉斯加东南部的九个岛屿（“威尔士亲王府”），并且三种独特的单倍型。威尔士亲王城里的松鼠似乎是新流行病，是一个单一的创始人种群的后代。线粒体变异虽然很小，但与对G. s的持续识别是一致的。灰黄花。鉴于阿拉斯加东南部栖息地破碎化的加剧，我们的结果表明分子数据可以为有效管理岛屿人口提供重要的基线信息。

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