Abstract

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 Cylindroleberididae and 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 diversity of species, in the high degree and low rank of endemism, and in the proportion of the number of species and genera in 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 isolated from the boreal fauna and exceeds it in the number of species and genera but is comparable to the boreal fauna in the number of endemic species. Both faunas are characterized by a high degree but a low level of endemism. Species richness of these faunas depends on different families. With a depth increase the number of myodocopid species decreases in both faunas; myodocopids do not penetrate deeper than 5500 m.

中文翻译：

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亚南极水域底栖兽脚类动物（Ostracoda：Myodocopida）的组成，结构和分布

摘要

本文对底栖Myodocopida亚极动物区系的文献资料进行了分析，包括97种。所研究的动物群的特点是地方性程度高，但地方性程度低。动物区系基于共同属的物种。Cylindroleberididae和Cypridinidae家族的兽脚类动物在种类和属上居于领先地位。随着深度的增加，龙骨种类的丰富性及其属的数量减少。分类学和测深学特征发生了明显变化。Myodocopida的南极和亚南极动物区系之间的相似性在物种的多样性低，地方性的高度和低等级以及家庭中物种和属的数量比例上很明显。动物区系之间的差异是通过明显的隔离来定义的，通过垂直分布的模式，以及通过对肌球菌的分类结构。Myodocopida的亚极南动物区系与北方动物区系完全隔离，其物种和属的数量超过了它，但在地方特有物种数量上可与北方动物区系相提并论。两种动物的特征是地方性程度高，但地方性水平低。这些动物的物种丰富度取决于不同的科。随着深度的增加，两种动物中的髓鞘种类数量都减少了。髓磷脂的穿透深度不超过5500 m。两种动物的特征是地方性程度高，但地方性水平低。这些动物的物种丰富度取决于不同的科。随着深度的增加，两种动物中的髓鞘种类数量都减少了。髓磷脂的穿透深度不超过5500 m。两种动物的特征是地方性程度高，但地方性水平低。这些动物的物种丰富度取决于不同的科。随着深度的增加，两种动物中的髓鞘种类数量都减少了。髓磷脂的穿透深度不超过5500 m。