九龙江口伪镖水蚤科一新种——沈氏伪镖水蚤

王博文; 郭东晖

doi:10.3969/j.issn.0253-4193.2019.06.009

九龙江口伪镖水蚤科一新种——沈氏伪镖水蚤

doi: 10.3969/j.issn.0253-4193.2019.06.009

王博文¹,
郭东晖^2,

1.
厦门大学海洋与地球学院, 福建厦门 361102
2.
厦门大学海洋与地球学院, 福建厦门 361102;厦门大学海洋生物多样性与全球变化研究中心, 福建厦门 361102;福建省海陆界面生态环境重点实验室, 福建厦门 361102

基金项目: 国家重点研发计划资助（2018YFC1406301）；国家自然科学基金（NFSC 41476114）；厦门市海洋经济发展专项资金项目（14CZY042HJ16）；自然资源部全球变化与海气相互作用专项（生物系统分类研究）。

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出版历程
- 收稿日期: 2018-07-01
- 修回日期: 2018-10-18

Pseudodiaptomus sheni sp. nov., one new species of Pseudodiaptomidae from the Jiulong River Estuary, Fujian

Wang Bowen¹,
Guo Donghui^2
,

1.
College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China
2.
College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, China;Marine Biodiversity and Global Change Research Center, Xiamen University, Xiamen 361102, China;Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Xiamen 361102, China

摘要

摘要: 记述了采自九龙江口桡足类1个新种——沈氏伪镖水蚤（Pseudodiaptomus sheni Guo&Wang，sp.nov.），对其形态特征进行了拍照、绘图和描述。形态上，新种头部钝尖，雌性胸部后侧角内缘乳状突起明显、生殖厣末端突起呈长倒刺状、尾叉外侧第2和第3尾刚毛基部膨大、第5胸足外肢第1节内末角突起尖细，雄性第5胸足左足第2基节后缘中部三角形突起狭尖，与火腿伪镖水蚤[P.poplesia（Shen，1955）]存在显著的形态差异；两者基于线粒体细胞色素氧化酶亚基Ⅰ（mtCOI）基因片段的遗传差异为17.4%~19.5%。沈氏伪镖水蚤的命名旨在纪念中国科学院动物研究所甲壳动物分类学家沈嘉瑞（1902-1975）研究员，模式标本保存于厦门大学海洋科技博物馆。
- 伪镖水蚤科 /
- 新种 /
- 沈氏伪镖水蚤 /
- mtCOI基因 /
- 九龙江口
Abstract: The samples of copepods were collected from the estuary of Jiulong River during September 2013 to September 2017. One new species of Pseudodiaptomidae, Pseudodiaptomus sheni Guo & Wang, sp. nov., which had been identified as the saccupodus type of P. poplesia (Shen, 1955) by Chen and Zhang (1965) and Shen (1979), is described. The differences between this new species and P. poplesia are as follows:(1) cephalosome rounded anteriorly, while that of P. poplesia narrowly protruded in dorsal view; (2) female posterolateral corner with distinct bump postermedially; (3) the posterior process of female genital operculum pointed and longer than that of P. poplesia; (4) the outer terminal 2nd and 3rd setae basally swollen on female caudal rami; (5) the first exopod segment of female fifth leg with distomedial acute projection, while that of P. poplesia with blunt one; 6) medial triangular projection on the endopod of male left fifth leg elongated and longer than that of P. poplesia. The mitochondrial cytochrome oxidase subunit Ⅰ (mtCOI) gene sequences support the conclusion based on morphological data, with distinct divergence values 17.4% to 19.5% between P. sheni and P. poplesia. The new species is named in honor of Prof. Chia-jui Shen (1902-1975), a senior crustacean taxonomist of Institute of Zoology, Chinese Academy of Sciences. All type specimens are deposited in Museum of Marine Science and Technology, Xiamen University.
- Pseudodiaptomidae /
- new species /
- Pseudodiaptomus sheni /
- mtCOI sequence /
- the Jiulong River Estuary

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