南海细足磷虾属Hansarsia的分类学研究  

Taxonomic research of the genus Hansarsia from the South China Sea

作　　者：周志乾 连喜平[1] 谭烨辉[1,2] ZHOU Zhiqian;LIAN Xiping;TAN Yehui(Marine Biodiversity Collections of South China Sea,Key Laboratory of Tropical Marine Bio-resources and Ecology,South China Sea Institute of Oceanology,Chinese Academy of Sciences,Guangzhou 510301,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院南海海洋研究所,中国科学院热带海洋生物资源与生态重点实验室,南海海洋生物标本馆,广东广州510301 [2]中国科学院大学,北京100049

出　　处：《热带海洋学报》2025年第2期100-114,共15页Journal of Tropical Oceanography

基　　金：中国科学院战略生物资源能力建设项目(KFJ-BRP-017-48);中国科学院生物分类学科学家岗位项目(CAS-TAX-24-042);国家动物标本资源库项目;广东省粤西热带海洋生态环境野外科学观测研究站项目(GSTOEW);国家自然科学基金项目(42225602、92258301、42090042)。

摘　　要：细足磷虾属Hansarsia (原Nematoscelis)的物种在海洋浮游生态系统中扮演着重要角色,但常存在混淆和错误鉴定。文章采用形态学分析方法,对中国科学院南海海洋生物标本馆在南海和东印度洋海域采集到的细足磷虾属标本进行了深入研究,旨在明确种间差异并解决分类上的混淆。文章补充和修订了秀细足磷虾、瘦细足磷虾、小细足磷虾和长细足磷虾的特征描述;描绘了4个种从亚成体到成体的第一和第二胸足的变化;指出了成体瘦细足磷虾的额角二型现象以及第一胸足掌节刚毛的数量变化;明确了在南海和东印度洋海域的小细足磷虾和长细足磷虾的区别。Species of the genus Hansarsia play crucial roles in marine planktonic ecosystems,but there is often confusion and misidentification.This paper employed morphological analysis methods to conduct in-depth research on the specimens of the genus Hansarsia collected by the Marine Biodiversity Collections of the South China Sea,Chinese Academy of Sciences,from the South China Sea and the East Indian Ocean,aiming to clarify differences between species and resolve taxonomic confusions.This paper a)supplemented and revised the characterizations of H.tenella,H.gracilis,H.microps,and H.atlantica;b) depicted the changes in the first and second thoracic legs of the four species from juvenile to adult;c) pointed out the phenomenon of two rostrum shapes in the adult H.gracilis,and the variation in the number of setae on the propodus of the first thoracic leg;and d) clarified the distinctions between H.microps and H.atlantica in the South China Sea and the East Indian Ocean.

关 键 词：磷虾 细足磷虾属 形态学 分类 第一胸足 

分 类 号：P735.532[天文地球—海洋生物学]