Migration of tagged Japanese common squid, Todarodes pacificus, in waters around Hokkaido [Japan]
2010
Sakaguchi, K., Hokkaido. Kushiro Fisheries Experiment Station (Japan)
Release and recapture records of tagged Japanese common squid, Todarodes pacificus, in the waters around Hokkaido are investigated. During 1927-2000, a total of 255,033 squid individuals were tagged and released, and 6,605 squids were recaptured. Migratory patterns of the squid were examined in the waters around Hokkaido, based on the results of the tagging experiments and the population structure. Todarodes pacificus migrate northeastward in the Sea of Japan and the Pacific Ocean with the warm Tsushima and Kuroshio currents, respectively. Then squid migrate southwestward utilizing the cold waters away from the warm current area at prior to spawning and dying of senescence in the warm currents.
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