Description of Echthrogaleus spinulus n. sp. (Copepoda: Pandaridae) parasitic on a torpedo ray from the central Pacific Ocean utilising a morphological and molecular approach

Description of Echthrogaleus spinulus n. sp. (Copepoda: Pandaridae) parasitic on a torpedo ray from the central Pacific Ocean utilising a morphological and molecular approach
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Echthrogaleus spinulus n. 的描述

DOI:
10.1007/s11230-019-09885-5
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发表时间:
2019
影响因子:
1.3
通讯作者:
González, M. Teresa
González, M. Teresa
中科院分区:
医学4区
文献类型:
--
作者:
Morales-Serna, F. Neptalí;Crow, Gerald L.;Montes, Martin M.;González, M. Teresa

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寄生桡足类一新种--刺刺突桡足类。(Pandaridae),描述自捕获于夏威夷沃茨的鱼雷雷Tetronarce tokionis(Tanaka)(Torpedinidae)。该新种的第4号家系背片大,后缘具密生齿,生殖复合体后外侧叶内侧宽弯,重叠,第4足外足不完全3节,体长最大(从额片前缘至尾支顶端最长16 mm,不包括刚毛)。这种形态与EchthrogaleusSteenstrup & Lütken,1861年的七个有效物种中的任何一个都不匹配。28 S rDNA序列分析将来自中太平洋的新材料与E.在大西洋和东太平洋的鞘翅目。然而,由于数据库中缺乏DNA序列,新的28 S rDNA序列不能用于确认物种身份。中太平洋雌性桡足类独特的形态特征结合28 S rDNA序列分析作为验证新种的基础。
A new species of parasitic copepod,Echthrogaleus spinulusn. sp. (Pandaridae), is described from the torpedo rayTetronarce tokionis(Tanaka) (Torpedinidae) captured in pelagic Hawaiian waters. The new species has pediger 4 bearing large dorsal plates with denticles on posterior margin, genital complex with posterolateral lobes widely curved medially and overlapping, leg 4 exopod incompletely 3-segmented, and the largest body size (maximum length 16 mm from anterior rim of frontal plates to tip of caudal rami, excluding setae). This morphology does not match any of the seven valid species ofEchthrogaleusSteenstrup & Lütken, 1861. Analysis of 28S rDNA sequences separated the new material from the Central Pacific from samples ofE. coleoptratusin the Atlantic and Eastern Pacific Oceans. However, due to the lack of DNA sequences in the databases, the new 28S rDNA sequence cannot used to confirm the species identity. The unique morphological characteristics of the Central Pacific female copepods combined with 28S rDNA sequencing was used as a basis to validate the new species.
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