The eggs of two snailfish species in gill cavity of golden king crab Lithodes aequispinus from the Nemuro Strait, southwestern Sea of Okhotsk, Japan
2020
Matsuzaki, K. (Marine Science Museum, Aquamarine Fukushima, Iwaki, Fukushima (Japan)) | Kamiunten, M. | Yanagimoto, T.
In the Nemuro Strait off Shiretoko Peninsula, eastern Hokkaido, Japan, egg mass deposits of liparid snailfishes were revealed in gill cavites of 14.8% (19 out of 128) of all golden king crabs Lithodes aequispinus sampled by local fishermen using traps set on steep slopes and hard bottoms at depths of 500-750 m in 2016. We also carried out continuous sampling of liparid snailfishes and collected seven species between 2015 and 2017. (Careproctus zachirus, C. cypselurus, C. furcellus, C. rausuensis, C. rastrinus, Paraliparis grandis and Crystallichthys matsushimae). COI sequences from eggs and hatched juveniles were compared with COI sequenced from positively identified adult voucher specimens. As a result, the eggs and juveniles were identified as C. cypselurus and C. furcellus. This result and prevalence rate of the snailfish eggs in gill cavites of golden king crabs is the first report in the Nemuro Strait, southwestern part of the Sea of Okhotsk.
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