有关 Chydoridae（甲壳纲：无甲目）迄今唯一的北极高山种——弯额象鼻溞 Alona werestschagini Sinev, 1999 的形态和分布的新数据。

New data on morphology and distribution of Alona werestschagini Sinev, 1999the only Arcto-Alpine species of Chydoridae (Cladocera: Anomopoda) known to date.

机构信息

Department of Invertebrate Zoology, Biological Faculty, M.V. Lomonosov Moscow State University, Leninskie Gory 112, Moscow 119991, Russia.

A.N. Severtsov Institute of Ecology and Evolution, Leninsky Prospect 33, Moscow 119071, Russia..

出版信息

Zootaxa. 2021 Nov 23;5071(2):242-252. doi: 10.11646/zootaxa.5071.2.4.

DOI:10.11646/zootaxa.5071.2.4

PMID:34810670

Abstract

Detailed study of morphology of Alona werestschagini Sinev, 1999 (Crustacea: Cladocera) confirms its affinities with Alona guttata Sars, 1862. A. werestschagini is the only Arcto-Alpine species among the family Chydoridae, distributed along Arctic coast of Eurasia and in mountains of Central Asia, newer recorded in temperate lowlands of the continent. In our opinion, the species evolved in mountainous regions of Central Asia, while its spreading to Arctic regions took place in Pleistocene.

摘要

详细研究了 Werestschagini 属的形态学，确认其与 guttata 属有亲缘关系。Werestschagini 是 Chydoridae 科中唯一的北极高山物种，分布在欧亚大陆的北极海岸和中亚的山区，最近在该大陆的温带低地也有记录。我们认为，该物种是在中亚山区进化而来的，而其向北极地区的扩散则发生在更新世。