Yanagimoto, T. & M. Ichimura. (2018). Genetic variations of two parasitic copepod species in gill of walleye pollock, Gadus chalcogrammus collected in the North Pacific. CANCER, Carcinological Society of Japan. 27:29-36. [In Japanese; English abstract].
Genetic variations of two parasitic copepod species in gill of walleye pollock, Gadus chalcogrammus collected in the North Pacific.
CANCER, Carcinological Society of Japan
27:29-36. [In Japanese; English abstract]
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The three copepod species Clavella per?da (Lernaeopodidiae), Haemobaphes diceraus (Pennellidae), and Beringobdella rectangulata (Piscicolidae) parasitize the gills of the Alaska pollock, Gadus chalcogrammus (Gadidae). Parasite specimens were sampled from Alaska pollock collected from the Shiranuka and Shibetsu areas of Hokkaido, Japan and the eastern Bering Sea. We investigated whether each of the three parasitic copepod species are panmictic across sampling locations by comparing the nucleotide sequences of the mitochondrial COI gene. The occurrence of B. rectangulata was rare in this study (n=1 from Shibetsu only) and therefore excluded from the analysis. Our analyses revealed no genetic differences among the three sampled populations of C. per?da and H. diceraus. We conclude that these latter two parasitic copepods are widely distributed in the North Paci?c and represent panmictic populations.
