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首页> 外文期刊>Canadian Journal of Zoology >Molecular evidence for multiple introductions of the banded grove snail (Cepaea nemoralis) in North America
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Molecular evidence for multiple introductions of the banded grove snail (Cepaea nemoralis) in North America

机译：在北美洲的分支鳞片蜗牛（Cepaea Nemoralis）的多次介绍的分子证据

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摘要

Global identification and monitoring programs for invasive species aim to reduce imminent impacts to biodiversity, ecosystem services, agriculture, and human health. This study employs a 658 base pair fragment of the cytochrome c oxidase subunit I (COI) gene to identify and categorize clades of the banded grove snail (Cepaea nemoralis (Linnaeus, 1758)) from native (European) and introduced (North American) ranges using a maximum-likelihood phylogeny and haplotype networks. This work corroborates the existence of eight clades within C. nemoralis and further identified three clades that were common to both Europe and North America (A, D, O). Clades A and D were found in eastern Canada, Ontario (Canada), and British Columbia (Canada), whereas clade O was restricted to Ontario, possibly introduced from Poland or central Europe. Haplotype networks suggest clade A was introduced from northern Europe, whereas clade D was introduced from western and central Europe. Networks contained many private haplotypes and a lack of haplotype sharing, suggesting strong genetic structure in this system, possibly resulting from reduced dispersal in this species. This study describes the contemporary distribution of C. nemoralis in Canada and demonstrates the efficacy of DNA barcoding for monitoring the spread of invasive species, warranting its widespread adoption in management policies.
机译：侵入物种的全球识别和监测计划旨在减少对生物多样性，生态系统服务，农业和人类健康的迫在眉睫的影响。本研究采用细胞色素C氧化酶亚基I（COI）基因的658个碱基对片段，以识别和对土着（欧洲）和引入（北美）范围的带状树木蜗牛（CEPAEA Nemoralis（Linnaeus，1758））的片状使用最大似然性系统发育和单倍型网络。这项工作证实了C. Nemoralis内的八个片状的存在，并进一步确定了欧洲和北美（A，D，O）共同的三分支。在加拿大东部（加拿大）和不列颠哥伦比亚省（加拿大）的Clades A和D被发现，而Clade O仅限于安大略省，可能从波兰或中欧引入。单倍型网络建议北欧推出的Clade A，而Clade D是从西欧和中欧引入的。网络含有许多私人单倍型和缺乏单倍型共享，这表明该系统中的强遗传结构，可能是由于该物种中减少的分散。本研究描述了加拿大C. Nemoralis的当代分布，并证明了DNA条形码对监测侵入物种的蔓延的疗效，要求其广泛的管理政策采用。

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