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首页> 外文期刊>ICES Journal of Marine Science >Genetic characterization of the endangered and endemic anchialine squat lobster Munidopsis polymorpha from Lanzarote (Canary Islands): management implications
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Genetic characterization of the endangered and endemic anchialine squat lobster Munidopsis polymorpha from Lanzarote (Canary Islands): management implications

机译：兰萨罗特岛（加那利群岛）濒危和特有的an鱼蹲矮龙虾Munidopsis polymorpha的遗传特征：管理意义

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摘要

Anchialine species show restricted geographic ranges, high habitat specificity, and small population sizes. These factors make them particularly vulnerable to human activities, yet little is known about their ecology and evolutionary history. Munidopsis polymorpha is a decapod endemic to an anchialine cave system of the Corona lava tube in Lanzarote (Canary Islands). The present study, the first genetic survey conducted on this largely unknown species, was designed to characterize its genetic diversity, population structure and recent demographic history, using sequence data for the cytochrome oxidase I gene and eight microsatellites. A single haplotype was identified in the mitochondrial dataset. Nuclear genetic diversity was also low (average = 4.375 + 1.685). No significant genetic structure was detected between sampling sites and years, either by analysis of molecular variance (F_(ST) = 0.006, p = 0.110) or Bayesian clustering analysis (K = 1), indicating this species should be treated as a single management unit. Neither did we find evidence for a recent bottleneck event, and estimates of effective population size were extremely low (～50). The lack of population structure, low genetic diversity and extremely low effective population size reinforce the high degree of isolation and endemicity of this species, and, consequently, the need to implement appropriate management actions.
机译：chi鱼种类显示出局限的地理范围，较高的栖息地特异性和较小的种群规模。这些因素使它们特别容易受到人类活动的影响，但对其生态和进化史知之甚少。多形杜鹃（Munidopsis polymorpha）是兰萨罗特岛（加那利群岛）电晕熔岩管的chi碱洞穴系统特有的十足动物。本研究是对这个未知物种进行的首次遗传调查，旨在利用细胞色素氧化酶I基因和8个微卫星的序列数据来表征其遗传多样性，种群结构和近期人口统计学特征。在线粒体数据集中确定了一个单倍型。核遗传多样性也很低（平均= 4.375 + 1.685）。通过分子变异分析（F_（ST）= 0.006，p = 0.110）或贝叶斯聚类分析（K = 1），在采样地点和年份之间未检测到明显的遗传结构，表明该物种应被视为单一物种单元。我们也没有找到有关近期瓶颈事件的证据，有效人口规模的估计值非常低（〜50）。种群结构的缺乏，遗传多样性的低下以及有效种群的极低，加剧了该物种的高度隔离和特有性，因此需要采取适当的管理措施。

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