First records of lyre crab <i>Hyas lyratus </i>Dana, 1851 (Decapoda: Majidae) in the Russian waters (northwestern Bering Sea) and some features of its biology

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 (61о52′ N 177о51′ E). Size of males was 35-43 mm, size of females varied within the range 19-49 mm. All males were at the 3rd molting stage in 2010 and at the 3rd 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).

Keywords

• краб-паук
• северо-западная часть берингова моря
• мыс наварин
• ареал