海南东寨港国家级自然保护区潮间带蟹类(十足目: 短尾下目)物种多样性

doi:10.17520/biods.2023030

摘要/Abstract

摘要：

蟹类是潮间带大型底栖无脊椎动物的重要代表, 也是红树林湿地生态系统的重要组分之一。海南东寨港国家级自然保护区是我国最典型的红树林湿地生态系统, 在东亚海洋生物地理区划上也具有重要意义。然而, 目前对该区域潮间带蟹类物种丰富度的了解有限, 其区系特点尚不明确。本文基于对该保护区内16个样点的采样调查, 结合东寨港历史分布记录种的整理和校对, 更新了东寨港潮间带蟹类物种名录, 并对其区系特点进行了分析。野外共采集蟹类标本207号, 分属17科39属64种。其中23种为东寨港新记录, 包括海南省新记录的突额薄板蟹(Elamena rostrata)和细爪拟相手蟹(Parasesarma ungulatum)。至本研究止, 东寨港共记录潮间带蟹类22科63属115种, 包括7种历史记录存疑种。研究结果表明, 东寨港潮间带蟹类区系具典型的东亚暖水性性质, 印度-西太平洋暖水区系成分占绝对优势, 且和中国南海北部大陆沿海区系的关系较密切, 与两广、福建等地沿海同属中国亚热带近海底栖动物区系。本研究可为保护区的物种编目、生物多样性保护及南海北部生物地理学研究提供基础资料。

关键词: 大型底栖动物, 甲壳动物, 新记录种, 存疑记录, 更新名录

Abstract

Aim: Brachyuran crabs are one of the important representatives of large benthic invertebrates in intertidal habitats and also an important component of mangrove wetland ecosystem. Dongzhaigang National Nature Reserve (DZGNNR) in Hainan preserves the most typical mangrove wetland ecosystem in China. It is also one of the key areas in the marine biogeographic division of East Asia. However, limited knowledge on intertidal crab species richness and unclear fauna characteristics in this area. Based on a comprehensive field survey combined with previous studies, we have cataloged an updated checklist of intertidal crabs of DZGNNR.

Method: The field survey was conducted in the intertidal zone of DZGNNR between September and November of 2022. During this time, 16 sampling sites were investigated and a total of 207 specimens were collected and identified. The species recorded in previous documents were reassessed and each taxon was revised according to the recent researches.

Results: During the field survey, we collected a total of 64 species of brachyuran crabs from 17 families and 39 genera. Out of these, 22 species were previously undocumented in DZGNNR, and two species were newly discovered in Hainan Province (Elamena rostrata and Parasesarma ungulatum). The updated checklist of brachyuran fauna of DZGNNR now includes 115 species belonging to 22 families and 63 genera.

Conclusions The intertidal brachyuran fauna of DZGNNR is mainly composed of East Asian warm water species, with Indo-West Pacific warm water elements being the most prevalent. This indicates that the DZGNNR is part of the northern South China Sea Subtropical Provinces in terms of its zoobenthic fauna, similar to the intertidal brachyuran fauna found in Guangxi, Guangdong and Fujian. Our study provides new insights on the brachyuran fauna of DZGNNR and north Hainan Island, which improve our understanding of zoobenthic biogeographical patterns in northern South China Sea.

Key words: macrozoobenthos, crustaceans, new records, questionable records, updated checklist

冯尔辉, 梁伟诺, 胡亮, 张旭 (2023) 海南东寨港国家级自然保护区潮间带蟹类(十足目: 短尾下目)物种多样性. 生物多样性, 31, 23030. DOI: 10.17520/biods.2023030.

Erhui Feng, Weinuo Liang, Liang Hu, Xu Zhang (2023) Species diversity of intertidal crabs (Decapoda: Brachyura) of Dongzhaigang National Nature Reserve, Hainan Province. Biodiversity Science, 31, 23030. DOI: 10.17520/biods.2023030.

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链接本文: https://www.biodiversity-science.net/CN/10.17520/biods.2023030

https://www.biodiversity-science.net/CN/Y2023/V31/I9/23030

图/表 1

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