Abstract
Males and females of lyre crab Hyas lyratus were found in the northwestern Bering Sea in 2010 (late July - early August), for the first time in the Russian waters. The crabs were caught during the trawl survey by bottom trawl at the depth of 111-169 m, on mixed grounds. Crabs of this species were caught again in the same area in August 2012. Thus, new western limit of the species distribution area is established as the western vicinity of Cape Navarin (61 ะพ 52โฒ N 177 ะพ 51โฒ E). Size of males was 35-43 mm, size of females varied within the range 19-49 mm. All males were at the 3 rd molting stage in 2010 and at the 3 rd terminal stage in 2012. All females, except one juvenile, had eggs of orange color. Traumatism (autotomy) of crabs was insignificant. Biological parameters of the crabs from the northwestern Bering Sea are compared with those from the Salish Sea (North-East Pacific).
Highlights
Males and females of lyre crab Hyas lyratus were found in the northwestern Bering Sea in 2010, for the first time in the Russian waters
New western limit of the species distribution area is established as the western vicinity of Cape Navarin (61ะพ52โฒ N 177ะพ51โฒ E)
ะะตััะฐ ะพะฑะฝะฐััะถะตะฝะธั ะบัะฐะฑะฐ-ะฟะฐัะบะฐ Hyas lyratus ะฟะพะบะฐะทะฐะฝั ะฝะฐ ัะธั
Summary
Males and females of lyre crab Hyas lyratus were found in the northwestern Bering Sea in 2010 (late July โ early August), for the first time in the Russian waters. The crabs were caught during the trawl survey by bottom trawl at the depth of [111โ169] m, on mixed grounds. Crabs of this species were caught again in the same area in August 2012. Size of males was [35โ43] mm, size of females varied within the range [19โ49] mm.
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