Assessing the conservation status of the land snail Oreohelix peripherica wasatchensis (Family Oreohelicidae)
Assessing the conservation status of the land snail Oreohelix peripherica wasatchensis (Family Oreohelicidae)
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评估陆地蜗牛 Oreohelix peripherica wasatchensis（Oreohelicidae 科）的保护状况
DOI：
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发表时间：
2008
影响因子：
2.2
通讯作者：
K. Crandall
中科院分区：
文献类型：
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作者：
K. Weaver;M. Pérez‐Losada;R. Guralnick;Ashley C. Nelson;S. Blatt;K. Crandall
事实证明，为无脊椎动物群体确定保护优先事项很困难，因为许多拟议的多样性单位都是基于不反映进化历史的形态特征。这种混乱是由于拟议的地方性和濒危群体范围界定不明确而造成的，导致制定适当的保护管理战略时出现问题。我们研究了这样一个群体，Oreohelix peripherica wasatchensis，这是一种位于犹他州瓦萨奇前沿山脉的陆地蜗牛，是《濒危物种法》下受保护的候选者。我们采用了广泛的抽样方法来确定当前的 O. p 范围。 wasatchensis，包括模式产地、瓦萨奇山脉周围的几个地区以及犹他州、内华达州和科罗拉多州的多个地区。从这些样本中，我们对线粒体 DNA 位点 12S 和细胞色素氧化酶 I (COI) 以及核位点内部转录间隔区 1 和 2（ITS1 和 ITS2）以及 5.8S 进行了测序。我们使用最大似然和贝叶斯分析估计系统发育关系。分子数据和齿舌形态数据表明该组被鉴定为 O. p. wasatchensis 分为两个不同的分支。我们建议根据新定义的范围对这两个不同的线粒体进化枝进行进一步的生态和种群评估，以评估其在 IUCN 标准下的濒危状态。
Establishing conservation priorities for invertebrate groups has proven difficult as many proposed units of diversity are based on morphological features that do not reflect evolutionary history. This confusion is confounded by poorly defined ranges of proposed endemic and endangered groups, leading to problems formulating adequate conservation management strategies. We examined one such group, Oreohelix peripherica wasatchensis, a land-snail located in the Wasatch Front Range of Utah that is a candidate for protection under the Endangered Species Act. We employed a broad sampling approach to determine the current range of O. p. wasatchensis, including the type locality, several localities in the surrounding Wasatch Mountains, and localities throughout Utah, Nevada, and Colorado. From these samples, we sequenced the mitochondrial DNA loci 12S and Cytochrome Oxidase I (COI) and nuclear loci Internal Transcribed Spacers 1 and 2 (ITS1 and ITS2) and 5.8S. We estimated phylogenetic relationships using maximum likelihood and Bayesian analyses. Molecular data and radula morphology data indicate that the group identified as O. p. wasatchensis falls into two distinct clades. We recommend further ecological and population assessments of these two distinct mitochondrial clades based on the newly defined range to evaluate its endangered status under the IUCN criteria.