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Two specimens of bigfin reef squid Sepioteuthis lessoniana Lesson, 1830 were caught by jigging in the Peter the Great Bay (42°37’N, 132°32’E) in October 2005. Both squids, a male with dorsal mantle length (DML) 273 mm and a female with DML 196 mm, were sexually mature, and female had spermatangia implanted into buccal membrane. It was the first record of sexually mature specimens of S. lessoniana in waters of southern Maritime Province of Russia (Primorye). In September 2006 two specimens of bigfin reef squid were caught by handle net in the Peter the Great Bay (42°47’N, 132°00’E): an immature female with DML 177 mm and a sexually mature female with DML 185 mm. Females were not copulated. The occurrence of tropical-subtropical species S. lessoniana in waters of the Peter the Great Bay, is associated with warming up of surface waters in the northwestern Japan Sea in recent years.

О новых находках кальмара Sepioteuthis lessoniana Lesson, 1830 (Cephalopoda, Loliginidae) в заливе Петра Великого (Японское море)
Мокрин Н. М.; Слободской Е. В.;