New host and first description of the male of Colobomatus stelliferi Pombo, Turra, Paschoal & Luque, 2015 (Copepoda: Philichthyidae), parasite of Umbrina canosai Berg, 1895 (Actinopterygii: Sciaenidae) off Brazil: improving the taxonomic knowledge pertaining to Colobomatus spp.

IF 1 4区医学 Q4 PARASITOLOGY

Systematic Parasitology Pub Date : 2023-04-01 DOI:10.1007/s11230-022-10079-9

João Victor Couto, Fábio Guimarães Lessa, José Luis Luque, Felipe Bisaggio Pereira, Fabiano Paschoal

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Abstract

The present study provides new host and first description of the male of Colobomatus stelliferi Pombo, Turra, Paschoal & Luque, 2015 (Copepoda, Philichthyidae), collected from the mandibular canals of the Argentine croaker Umbrina canosai Berg, off the State of Rio de Janeiro, Brazil. Four out of nine fish analyzed (prevalence 44.4%) were parasitized by C. stelliferi and showed a mean intensity of 2.5 (range 2-3, standard deviation 1.25). Adult males of C. stelliferi can be differentiated from their closest congeners based on the combination of the following characters: maxilliped with naked basal segment and small apical spine, the presence of two elements on the second endopodal segment of the antenna, and the presence of leg 4. This parasitic copepod is seemingly host-specific to fish of the family Sciaenidae and its occurrence is restricted to the Brazilian coast. The present results contribute to our knowledge of the biology of C. stelliferi and of the parasitic copepod fauna from Brazil.

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Pombo, Turra, Paschoal & Luque, 2015(桡足目:Philichthyidae)， 1995(放线翼目:Sciaenidae)巴西黑腹虫寄生，新寄主及雄虫首次描述:改进关于Colobomatus spp的分类知识。

本研究提供了新的寄主和对Colobomatus stelliferi Pombo, Turra, Paschoal & Luque, 2015(桡足目，Philichthyidae科)雄鱼的首次描述，这些雄鱼来自巴西里约热内卢州附近的阿根廷黄花鱼Umbrina canosai Berg的下颌管。9条鱼中有4条被寄生，阳性率为44.4%，平均寄生强度为2.5(范围2 ~ 3，标准差为1.25)。结合以下特征，可以将星菖蒲成年雄虫与其近亲区分开来:上唇，基部裸露，顶端棘小，触角第二趾内段有两个元素，腿4的存在。这种寄生桡足动物似乎是鱼科鱼类特有的宿主，它的出现仅限于巴西海岸。本研究结果有助于我们对巴西星螺和寄生桡足动物区系的生物学认识。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Systematic Parasitology 医学-寄生虫学

CiteScore

2.20

自引率

23.10%

发文量

审稿时长

6-12 weeks

期刊介绍： Systematic Parasitology publishes papers on the systematics, taxonomy and nomenclature of the following groups: Nematoda (including plant-parasitic), Monogenea, Digenea, Cestoda, Acanthocephala, Aspidogastrea, Cestodaria, Arthropoda (parasitic copepods, hymenopterans, mites, ticks, etc.), Protozoa (parasitic groups), and parasitic genera in other groups, such as Mollusca, Turbelleria, etc. Systematic Parasitology publishes fully illustrated research papers, brief communications, and fully illustrated major revisions. In order to maintain high standards, all contributors describing new taxa are asked to state clearly where the holotype is deposited and to make paratypes available for examination by the referees. It is recognized that, in some cases, this may cause problems for the authors, but it is hoped that by adhering to this rule authors may be protected against rapid synonymy of their taxa, and the types will be preserved for posterity.