[1] Royal Belgian Inst Nat Sci Nat, OD Nature, Vautierstr 29, B-1000 Brussels, Belgium
[2] Unitec Inst Technol, Sch Environm & Anim Sci, Auckland, New Zealand
[3] Russian Fed Res Inst Fisheries & Oceanog, Okruzhnoy Proezd 19, Moscow 105187, Russia
[4] Russian Fed Res Inst Fisheries & Oceanog, Polar Branch, Knipovich St 6, Murmansk 183038, Russia
[5] Russian Acad Sci, Shirshov Inst Oceanol, Nakhimovsky Prospekt 36, Moscow 117997, Russia
[6] Russian Acad Sci, AN Severtsov Inst Ecol & Evolut, Leninsky Ave 33, Moscow 119071, Russia
[7] Dagestan State Univ, Gadzhieva St 43a, Makhachkala 367000, Russia
[8] Caspian Inst Biol Resources, Gadzhieva St 45, Makhachkala 367000, Russia
[9] Tomsk State Univ, Lenin Ave 36, Tomsk 634050, Russia