биота российских вод японского моря - Materials of Alexey Shipunov

provided with lobe between statocyst and inner margin, armed with 13 to 41 spines.Telson elongate, triangular, with slightly truncated apex; telson 2.5–3.3 times as longas broad at base; lateral margin with 27 to 44 spines, gathered in 6–11 groups on distalhalf; 2 pairs of spines situated on apex; outer pair twice longer than inner one, almostas long as longest spines on lateral margin. Maximum length of female body 20.4 mm,of male body 19.1 mm.Distribution. N. czerniawskii is a West Pacific subtropical-boreal species. It isdistributed from the coast of Shandong Peninsula and the south of Hokkaido Island(Japan) to Alaska Peninsula and Kotzebue Bay (north-western Alaska). In the Sea ofJapan it has been recorded in Peter the Great Bay (Possjet Bay, 42°37′N, 131°06′E)and in De-Kastri Bay (Observatoriya Island).Habitat and breeding. N. czerniawskii is a high sublittoral species, found indepths from 0 to 31 m, throughout its area of distribution, as well as in the Sea of Japan.It occurs in waters with a temperature from -1° to +26°C and a salinity of 19.67–30‰, over sandy bottoms. There are no records for the breeding of this species in theSea of Japan.4. Neomysis mirabilis (Czerniavsky, 1882)(Pl. XII, figs. 1–6)Czerniavsky, 1882b: 33 (Heteromysis mirabilis); Zimmer, 1904: 468 (Neomysis mirabilis);Schmitt, 1919: 6 (in part) (Neomysis andersoni); Ii, 1936: 581 (Neomysis nakazawai).Description. Antennal scale 8.7–15 times as long as broad. Anterior margin ofcarapace evenly rounded or with small triangular rostral plate having rounded apex.Carpo-propodus of endopod of thoracopods 5–8 consists of 7–8 (in juveniles) to 15subjoints. Exopod of pleopod 4 of male 2.3–3.2 times as long as endopod; basal (proximal)segment 2.6–6 times as long as distal one. Ventral side of endopod of uropodwith lobe between statocyst and inner margin, armed with 29–69 spines. Telson elongate,triangular, with rounded apex, sharply tapers in distal half or third, 2.4–3.5 timesas long as broad at base. Lateral margins of telson with 33 to 50 spines, almost evenlyincreasing towards apex or gathered in 6–9 distinct groups (these two varieties alsohave transitional forms). Apex of telson armed with 2 to 3 pairs of equal spines. Maximumlength of female body 35.5 mm, of male body 37.5 mm.Distribution. N. mirabilis is a West Pacific widely dispersed boreal species,found from Wŏnsan (Korea) and the northern Japan (40°N) to the Bering Sea coast ofAlaska (65°N) and the north-eastern coast of Kamchatka (61°30′N). It seems to beubiquitous in the northern Sea of Japan: recorded from various parts of Peter the GreatBay, the Tatar Strait, and Vladimir Bay.Habitat and breeding. N. mirabilis is a sublittoral species. In the area of its distribution,as well as in the Sea of Japan it occurs at depths from 0 to 140 m, mostly to30 m, at a temperature from -1.6° to +24°C and a salinity of 15–34.3‰, predominantlyover sand or muddy sand, rarer over boulders and pebbles, or over silt. Femaleswith 6 to 76 embryos in the marsupiums were registered in the Sea of Japan Marchthrough September. N. mirabilis is one of the most abundant species in the coastal watersof the Sea of Japan.57