Two Species of Caligus (Copepoda : Caligidae) Parasitic on Black Sea Bream (Acanthopagrus schlegeli) Cultured in Taiwan

Abstract

Two species of parasitic copepods are described based on the materials obtained from the pondcultured black sea bream (Acanthopagrus schlegeli) in Tainan County, Taiwan. They are : Caligus acanthopagri n. sp. found on the host's body surface and Caligus multispinosus on the host's gills and in the gill cavities. The new species is very close to Caligus latigenitalis but can be distinguished from it by the fine structures on the exopod of leg 4. This study shows that Caligus dieuzeidei reported by Shiino in 1954 from Sparus macrocephalus (=Acanthopagrus schlegeli) was a misidentification for C. latigenitalis.