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首页> 外文期刊>Russian journal of marine biology >The Composition, Structure, and Distribution of Benthic Ostracod Fauna (Ostracoda: Myodocopida) in Subantarctic Waters
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The Composition, Structure, and Distribution of Benthic Ostracod Fauna (Ostracoda: Myodocopida) in Subantarctic Waters

机译：The Composition, Structure, and Distribution of Benthic Ostracod Fauna (Ostracoda: Myodocopida) in Subantarctic Waters

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摘要

This paper presents an analysis of the literature data on the Subantarctic fauna of the benthic Myodocopida,including 97 species. The studied fauna is characterized by a high degree but a low level of endemism.The fauna is based on the species of common genera. Ostracods of the families Cylindroleberididaeand Cypridinidae lead in the number of species and genera. With depth increase, species richness of ostracods,and the number of their genera decrease; taxonomic and bathymetric characteristics markedly change.Similarities between the Antarctic and Subantarctic faunas of Myodocopida are evident in the low diversityof species, in the high degree and low rank of endemism, and in the proportion of the number of species and generain families. Differences between the faunas are defined by significant isolation, by the pattern of vertical distribution,and by the taxonomic structure of myodocopids. The Subantarctic fauna of Myodocopida is completely isolatedfrom the boreal fauna and exceeds it in the number of species and genera but is comparable to the boreal faunain the number of endemic species. Both faunas are characterized by a high degree but a low level of endemism. Speciesrichness of these faunas depends on different families. With a depth increase the number of myodocopid speciesdecreases in both faunas; myodocopids do not penetrate deeper than 5500 m.

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