额尔齐斯河发现中国新纪录种——格鲁西东欧螯虾

Astacus leptodactylus—A new record species in China was found in Irtysh River

2021年5月,在额尔齐斯河下游哈巴河县河段的渔获物中发现螯虾7尾,成年个体长11.4~17.5 cm,体质量81.7~127.6 g。经查询国内外分类学文献,依据其形态特征、栖息生境特点等鉴定为格鲁西东欧螯虾,拉丁学名:Astacus leptodactylus Eschscholtz 1823,俗名:窄爪螯虾(narrow-clawed crayfish)、多瑙河螯虾(Danube crayfish)等。格鲁西东欧螯虾为中国新纪录种,填补了我国中西部地区螯虾科的空白,可作为北方地区(寒冷水域)水产养殖的后备种质资源。

In May 2021,seven crayfish were found in the catch of the lower reaches of the Irtysh River in Habahe County.The adult individuals were 11.4-17.5 cm long and 81.7-127.6 g in weight.According to the taxonomic literature at home and abroad,the crayfish was identified as Astacus leptodactylus Eschscholtz,1823 according to its morphological characteristics and habitat characteristics.Its common name containing narrow-clawed crayfish,Danube crayfish and etc.A.leptodactylus is a new record species in China,filling the gap of crayfish family in the central and western regions of China,and is also a reserve germplasm resource for aquaculture in the northern region.