Crustacean Research
Online ISSN : 2189-5317
Print ISSN : 0287-3478
ISSN-L : 0287-3478
原著論文
Norileca aff. triangulata (Isopoda: Cymothoidae), a branchial cavity parasite of the African sailfin flyingfish, Parexocoetus mento (Beloniformes: Exocoetidae), from southern Japan, with a new Japanese record of the isopod genus
Kazuya Nagasawa
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ジャーナル フリー

2021 年 50 巻 p. 55-64

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A single ovigerous female of cymothoid isopod was collected from the branchial cavity of the African sailfin flyingfish, Parexocoetus mento (Valenciennes, 1847) in Kadogawa Bay, an inlet of the western North Pacific Ocean, southern Japan. Although the isopod specimen differs from Norileca triangulata (Richardson, 1910) in the number of articles of the antennula and the absence of small setae on the propodus of pereopods 1 and 2, it is similar to the species. However, the species was poorly originally described, and there are several differences between the original and subsequent descriptions and the specimen. Thus, this study refrains from identifying the specimen to species and reports it as N. aff. triangulata. This represents the first record of Norileca from Japan. Five species of cymothoid isopods including N. aff. triangulata are now known from Japanese flyingfishes, and a parasite-host list is provided.

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© 2021 The Carcinological Society of Japan
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