title: Two species of parasitic copepods (Caligidae) new to Japan.
abstract: Two species of parasitic copepods (Siphonostomatoida: Caligidae), Caligus sclerotinosus Roubal, Armitage & Rohde, 1983, parasitic on red seabream Pagrus major (Temminck & Schlegel), and Lepeophtheirus longiventralis Yü & Wu, 1932, parasitic on spotted halibut Verasper variegatus (Temminck & Schlegel), are redescribed based on material found on their respective hosts cultured in Japan. Both species are new to Japan. Preliminary observation on the occurrence of L. longiventralis indicates that the larval development takes place on the body surface of the host and only the post-mated female migrates into the host's gill-cavities. Whilst the occurrence of L. longiventralis in Japan can be considered as due to natural causes, the occurrence of C. sclerotinosus is likely due to anthropogenic activities.
authors.affiliation: Department of Biological Sciences, California State University, Long Beach, CA 90840-3702, USA.
authors.forename: Ju-shey
authors.initials: JS
authors.lastname: Ho
authors.forename: Samuel
authors.initials: S
authors.lastname: Gómez
authors.forename: Kazuo
authors.initials: K
authors.lastname: Ogawa
authors.forename: Masato
authors.initials: M
authors.lastname: Aritaki
mesh_terms: D000818:Animals; D033342:Copepoda / Q000033:anatomy & histology*; D005260:Female; D005432:Flounder / Q000469:parasitology*; D005880:Gills / Q000469:parasitology; D007564:Japan; D008297:Male; D021541:Sea Bream / Q000469:parasitology*