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首页> 外文期刊>Journal of Molluscan Studies >Geographical differentiation in Clelandella (Gastropoda : Trochidae) in the northeastern Atlantic
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Geographical differentiation in Clelandella (Gastropoda : Trochidae) in the northeastern Atlantic

机译：东北大西洋的克莱兰德利亚（Gastropoda：Trochidae）的地理分化

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摘要

The trochid genus Clelandella is reviewed, taking into account new material collected on northeastern Atlantic seamounts and archipelagos, and in deep water of the Mediterranean. The type species C. miliaris (Brocchi, 1814) is illustrated with topotypic material, and living representatives are reported ranging from north Norway to West Africa and into the Mediterranean. The insular populations of Clelandella are found to constitute discrete groups, which are treated as new species: Clelandella dautzenbergi n. sp. on the Lusitanian seamounts, C. perforata n. sp. in the Meteor group of the central North Atlantic, C. azorica n. sp. in the Azores and C. madeirensis n. sp. in Madeira. Within such groups, differentiation is not appreciable and variability is continuous notwithstanding distances of the order of 200 km. Between such groups, the geographical isolation of the insular populations has resulted in substantial divergence over distances in the range 300-600 km. A further species, C. myriamae n. sp., was collected on deep-water mud volcanoes of the eastern Mediterranean, and is broadly sympatric with C. miliaris.
机译：考虑到在东北大西洋海山和群岛以及地中海深水中收集到的新物质，对旋毛虫属克莱兰德勒进行了审查。举例说明了C. miliaris（Brocchi，1814）类型的物种，具有典型的地形特征，据报道有活生生的代表，从挪威北部到西非，再到地中海。发现克雷兰德勒的岛上种群构成不连续的群体，这些群体被视为新物种：克雷兰德勒·道森伯格尼。 sp。在卢西塔尼亚海山上，C。perforata n。 sp。在北大西洋中部的流星群中，C。azorica n。 sp。在亚速尔群岛和C.madeirensis n。 sp。在马德拉岛。在这样的群体中，尽管距离在200 km左右，但区别并不明显，并且变化是连续的。在这两个群体之间，岛上居民的地理隔离导致300-600 km范围内的距离存在很大差异。另一种，C。myriamae n。 C. sp。收集在地中海东部的深水泥火山上，与C. miliaris大致相同。

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