Effects of brooding and broadcasting reproductive modes on the population genetic structure of two Antarctic gastropod molluscs

J. I. Hoffman; A. Clarke; K. Linse; L. S. Peck

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Effects of brooding and broadcasting reproductive modes on the population genetic structure of two Antarctic gastropod molluscs

机译：育雏和繁殖繁殖方式对两种南极腹足类软体动物种群遗传结构的影响

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Life-history characteristics exert a profound influence upon the population structure of many marine organisms. However, relatively few genetic studies have compared direct with indirect-developing species in the same ecosystem or geographical region, and none to our knowledge within an Antarctic setting. To address this issue, we have collected novel amplified fragment length polymorphism (AFLP) data from the direct-developing top shell Margarella antarctica to form a comparison with previously published data for the broadcast-spawning Antarctic limpet Nacella concinna. We scored 270 loci in 240 M. antarctica individuals sampled from five populations spanning the full length of the Antarctic Peninsula. Profound differences were identified in the strength and pattern of population structure between the two species, consistent with gene flow being highly restricted in M. antarctica relative to N. concinna.

机译：生命历史特征对许多海洋生物的种群结构产生深远影响。然而，相对较少的遗传学研究将直接与同一个生态系统或地理区域中的间接发育物种进行了比较，而在南极环境中，我们所知还没有。为了解决这个问题，我们从直接发育的顶壳南极玛格丽拉收集了新颖的扩增片段长度多态性（AFLP）数据，以与早先发布的繁殖南极帽贝Nacella concinna的数据进行比较。我们在来自南极半岛全长五个种群的240个南极洲个体中为270个基因座评分。在两个物种之间的种群结构的强度和模式上发现了深刻的差异，这与南极分支杆菌相对于猪笼草的基因流受到高度限制是一致的。

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《Marine biology》 |2011年第2期|p.287-296|共10页
作者
J. I. Hoffman; A. Clarke; K. Linse; L. S. Peck;
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Department of Animal Behaviour, University of Bielefeld,Postfach 100131, 33501 Bielefeld, Germany;

British Antarctic Survey,Natural Environment Research Council, High Cross,Madingley Road, Cambridge CB3 OET, UK;

British Antarctic Survey,Natural Environment Research Council, High Cross,Madingley Road, Cambridge CB3 OET, UK;

British Antarctic Survey,Natural Environment Research Council, High Cross,Madingley Road, Cambridge CB3 OET, UK;

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Effects of brooding and broadcasting reproductive modes on the population genetic structure of two Antarctic gastropod molluscs

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