scholarly journals A new species of the genus Liljeborgia Spence Bate, 1862 (Crustacea: Amphipoda: Liljeborgiidae) associated with the burrows of the spoon worm Urechis unicinctus in the Sea of Japan

Author(s):  
Ivan Marin

A new symbiotic species of liljeborgiid amphipods, Liljeborgia associata sp. nov., is described from the burrows of the spoon worm Urechis unicinctus (Drasche, 1880) (Annelida: Polychaeta: Echiura: Urechidae) in the southern part of Peter the Great Bay and Posjeta Bay in the Sea of Japan. The new species is mostly similar and probably related to Liljeborgia geminata Barnard, 1969, known from the Californian coasts of the USA, and Liljeborgia serratoides Tzvetkova, 1967, described from Posjeta Bay in the Sea of Japan, but can be clearly distinguished from all congeners by morphological features of mouthparts, appendages and telson. The new species is only the fourth in the family Liljeborgiidae to be described from the Russian coast of the northwestern Pacific and the first in association with spoon worms (Echiura).

Author(s):  
Evgeny V. Kolpakov

Представлены сведения об обнаружении в зал. Петра Великого (северо-западная часть Японского моря) нового для фауны России вида двустворчатого моллюска Tellimya fujitaniana (Yokoyama, 1927) (Lasaeidae). Три живые особи с длиной раковины 3.9–6.2 мм собраны в 2003 и 2018 гг. в диапазоне глубин 17–28 м на илисто-песчаном грунте. Обобщены данные по экологии и ареалу данного вида. Ключевые слова: двустворчатый моллюск, Tellimya fujitaniana (Yokoyama, 1927), Lasaeidae, распространение, залив Петра Великого, Японское море. Information on finding in Peter the Great Bay (north-western part of the Sea of Japan) a new species of bivalve mollusk for the fauna of Russia, Tellimya fujitaniana (Yokoyama, 1927) (Lasaeidae), are presented. Three alive specimens with shell length 3.9–6.2 мм were collected in 2003 and 2018 at the depths of 17–28 m on muddy sand. Data on the ecology and geographical range of this species are summarized. Key words: bivalve mollusks, Tellimya fujitaniana (Yokoyama, 1927), Lasaeidae, distribution, Peter the Great Bay, Sea of Japan.


Zootaxa ◽  
2011 ◽  
Vol 2814 (1) ◽  
pp. 59 ◽  
Author(s):  
ALEXANDER I. MARKEVICH ◽  
V. E. KHARIN

A new stichaeid fish, Ernogrammus zhirmunskii is described on the basis of the specimens collected in Peter the Great Bay, the Sea of Japan. This new species differs from its congeners E. hexagrammus and E. walkeri in having seven body sensory canals in total number including one short canal in the middle of belly and unique combination in number of the anal fin rays with one short rigid spine posteriormost (I 28-30 I). In coloration the fish has one narrow white stripe between two wide black ones on the base of pelvic fin, and one dark blotch on the dorsal fin anteriorly.


Zootaxa ◽  
2012 ◽  
Vol 3244 (1) ◽  
pp. 59 ◽  
Author(s):  
IVAN MARIN ◽  
SERGEY SINELNIKOV

A new species of amphipod from the genus Metopelloides Gurjanova, 1938 (Crustacea: Amphipoda: Stenothoidae) asso-ciated with two species of sublittoral hermit crab species, Pagurus pectinatus (Stimpson, 1858) and Elassochirus cavi-manus (Miers, 1879) (Crustacea: Decapoda: Paguridae), is described from the Russian coasts of the Sea of Japan. The newspecies clearly differs from the congeners by the combination of morphological features such as telson without lateralspines, an elongated mandibular palp with single apical setae, the structures of distoventral palmar margins of subchelaon gnathopods I and II in females, bright white-red body coloration. Thus, the record of Metopelloides paguri sp. nov.represents the second record of the family Stenothoidae in the association with sublittoral hermit crabs from the Sea of Japan.


Author(s):  
Gennady P. Manchenko ◽  
Vasily I. Radashevsky

A Dipolydora species (Polychaeta: Spionidae) was found in mud tubes attached to the larger tubes of the chaetopterid polychaete Chaetopterus cautus in Peter the Great Bay of the Sea of Japan. The worms were close in morphology to D. carunculata, a borer of various calcareous substrata and sponges described earlier from the same area. The chaetopterid-associated tube-building individuals usually differed from shell-boring individuals by the presence of black pigmentation on palps. However, some of them were not pigmented and appeared almost identical to D. carunculata. Isozymes of the tube-building and shell-boring individuals were compared using starch gel electrophoresis. Two of 16 studied isozyme loci proved diagnostic and unequivocally demonstrated the presence of two distinct species. The chaetopterid-associated individuals are described here as a new species, D. melanopalpa. Unbiased Nei's genetic distance between D. melanopalpa and D. carunculata (D=0·949) as well as the level of intraspecific genetic variation in either of them (D. melanopalpa, He=0·206±0·054; D. carunculata, He=0·239±0·044) are high and comparable to those of other electrophoretically studied polydorids. In contrast to other examined polydorids, D. carunculata and D. melanopalpa have the same numbers of expressed isozyme loci.


2007 ◽  
Vol 16 (2) ◽  
pp. 157-162
Author(s):  
A.P. Kassatkina

Diagnoses and lists of species are given for the genera of Sagittidae. A new subfamily Flaccisagittinae is established for the genera Flaccisagitta, Pseudosagitta, Accedosagitta, and Abosagitta. A new species, Sagitta sceptrum sp. n., is described from the Sea of Japan.


Zootaxa ◽  
2018 ◽  
Vol 4444 (2) ◽  
pp. 154
Author(s):  
IVAN MARIN

One of the most northern representatives of the family Atyidae, an amphidromous shrimp Paratya borealis Volk, 1938 (Crustacea: Decapoda: Atyidae), is considered as a junior synonym of Paratya compressa (De Haan, 1844 [in De Haan, 1833-1850]) based on morphological and genetic investigations of the specimens collected in rivers flowing into Peter the Great Bay and Posyeta Bay along the Russian coasts of the Sea of Japan. The study greatly increases the area of distribution of P. compressa to north for more than 1000 km and suggests that the species probably inhabit rivers flowing into the Sea of Japan also along North and South Korean coasts. 


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