駿河湾におけるホクヨウハダカTarletonbeania tayloriの出現

抄録

Tarletonbeania taylori Mead is a boreal species widely distributed in the northern North Pacific Ocean.This species, however, has not been recorded from Japan Sea, Okhotsk Sea and Bering Sea.Four specimens ranging 24.8 to 31.2 mm in standard length, were stranded on the beach of Miho Key in Suruga Bay, Shizuoka Pref., on March 24th, 1971.Characters of these specimens match well with those of specimens reported from other localities.This record is the first one in Suruga Bay, and the southernmost record of the species.
Other fishes stranded on the beach with these specimens were lanternfishes, Myctophum orientale, Myctophum obtusirostrum, and gonostomatid fishes, Vinciguerria nimbaria and Maurolicus muelleri.
The axis of the Kuroshio Current ran farther off the coast of southern Honshu in 1971 than in the same season of 1969 and 1970, because of the presence of a large cold water mass.The Oyashio Current was more powerful than the Kuroshio in the region of Choshi and adjacent waters in 1971.It is suggested that the lanternfish, Tarletonbeania taylori, penetrated into Suruga Pay from north, the region of Choshi, Chiba Prefecture.