A New Species of Branchellion (Hirudinea: Piscicolidae) Parasitizing the Gills of Short-Tail Stingrays (Batoidea: Dasyatidae) from the West Pacific

A new fish leech, sp. n., is described based on specimens parasitizing the gills of the short-tail stingray, (Hutton, 1875), collected from Japanese waters. The new species can be distinguished from other congeners by having: i) pulsating vesicles emerging from posterior base of branchiae, one pair...

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Bibliographic Details
Published inZoological science Vol. 40; no. 4; p. 308
Main Authors Jimi, Naoto, Shinji, Junpei, Hookabe, Natsumi, Okanishi, Masanori, Woo, Sau Pinn, Nakano, Takafumi
Format Journal Article
LanguageEnglish
Published Japan 01.08.2023
Subjects
Hirudinida
cox1
taxonomy
COI
Annelida
Oceanobdelliformes
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Summary:A new fish leech, sp. n., is described based on specimens parasitizing the gills of the short-tail stingray, (Hutton, 1875), collected from Japanese waters. The new species can be distinguished from other congeners by having: i) pulsating vesicles emerging from posterior base of branchiae, one pair per somite; ii) dorsal white spots, not arranged in longitudinal row; and iii) blackish body. A phylogenetic tree based on partial sequences of the mitochondrial cytochrome oxidase subunit I gene from the new species and other piscicolid worms showed that the new species is sister to Savigny, 1822. This is the first record of Savigny, 1822 from Japanese waters.
ISSN:0289-0003
DOI:10.2108/zs220057