Cryptic diversity of the rocky crab genus Glebocarcinus Nations, 1975 (Crustacea: Decapoda: Cancridae): description of a new species from Russian coastal waters of the Sea of Japan based on morphology, DNA and distribution

Zootaxa ◽  
2018 ◽  
Vol 4415 (3) ◽  
pp. 473
Author(s):  
IVAN N. MARIN ◽  
ANASTASSYA S. MAIOROVA ◽  
OLGA M. KORN
Keyword(s):  
New Species ◽  
Sea Of Japan ◽  
Coastal Waters ◽  
New Records ◽  
Dorsal Surface ◽  
Coi Gene ◽  
The Sea Of Japan ◽  
The North ◽  
Rock Crab ◽  
A New Species

A new cancrid crab species Glebocarcinus kashini sp. nov. (Decapoda: Brachyura: Cancridae) is described from Russian coastal waters of the Sea of Japan. The new species can be clearly separated from relative and sibling, Glebocarcinus amphioetus (Rathbun, 1898), by a less prominent and granulated dorsal surface of the carapace and dorsal surface of the cheliped propodus, less prominent sculpture of the carapace front and bluntly triangular anterolateral teeth of the carapace. Comparison of COI gene sequences supports the subdivision of these two species and shows their clear genetic separation from a related species, the American pygmy rock crab, G. oregonensis (Dana, 1852). Along the mainland coast of the Sea of Japan, G. kashini and G. amphioetus possibly overlap only in Posyet Bay and adjacent areas; the new species is distributed to the north from the bay while G. amphioetus is distributed to the south. Previous and new records of G. amphioetus from the area are discussed.

Description of new species of algal-boring Limnoria (Crustacea, Isopoda, Limnoriidae) from Japan and redescription of Limnoria segnoides Menzies, 1957 and L. nagatai Nunomura, 2012

Zootaxa ◽  
2019 ◽  
Vol 4550 (2) ◽  
pp. 236 ◽  
Author(s):  
HIROKI YOSHINO ◽  
TAKESHI A. OHSAWA
Keyword(s):  
New Species ◽  
Sea Of Japan ◽  
Coi Gene ◽  
The Sea Of Japan ◽  
Similar Species ◽  
Eisenia Bicyclis ◽  
Mitochondrial Coi ◽  
Mitochondrial Coi Gene ◽  
Mandibular Palp ◽  
A New Species

Previous research on the mitochondrial COI gene sequences of several populations of Limnoria nagatai Nunomura suggested a cryptic species from the Sea of Japan. A new species of algal-boring limnoriid is here described. Limnoria furca sp. nov. was collected from the holdfasts of Eisenia bicyclis on the Oki Islands and the Sea of Japan coast of Honshu and Kyushu Islands, Japan. L. furca sp. nov. is diagnosed morphologically by lacking a mandibular palp, faint subparallel carinae on the pleotelson, faint Y-shaped carinae on pereonite 5, the bifid lacinia mobilis of right mandible and the shapes of the secondary unguis on the pereopods. Similar species, L. segnoides Menzies, 1957 and L. nagatai Nunomura, 2012, are redescribed on the basis of the holotypes. 

Metopelloides paguri sp. nov., a new species of symbiotic stenothoid amphipod (Crustacea: Amphipoda: Stenothoidae) associated with sublittoral hermit crabs from the Russian coasts of the Sea of Japan

Zootaxa ◽  
2012 ◽  
Vol 3244 (1) ◽  
pp. 59 ◽  
Author(s):  
IVAN MARIN ◽  
SERGEY SINELNIKOV
Keyword(s):  
New Species ◽  
Sea Of Japan ◽  
Hermit Crab ◽  
Hermit Crabs ◽  
The Sea Of Japan ◽  
Crab Species ◽  
Body Coloration ◽  
The Family ◽  
Mandibular Palp ◽  
A New Species

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.

scholarly journals Assessment of ecological state of the Posyet Bay (the Sea of Japan) by heavy metals content in brown algae

2017 ◽  
Vol 6 (2) ◽  
pp. 91-95
Author(s):  
Nadezhda Konstantinovna Khristoforova ◽  
Anna Dmitrievna Kobzar
Keyword(s):  
Heavy Metals ◽  
Sea Of Japan ◽  
Coastal Waters ◽  
Atmospheric Transport ◽  
The Sea Of Japan ◽  
High Concentration ◽  
The North ◽  
Recreational Pressure ◽  
North Western ◽  
Sargassum Miyabei

The paper contains the study of heavy metals in three species - Sargassum miyabei , Sargassum pallidum , Cystoseira crassipes in the coastal waters of the Posyet Bay. The analysis of the spatial distribution of trace elements revealed the highest contents of zinc, copper and nickel in the Troitsa Bight, due to recreational pressure and a high concentration of nickel and cadmium in Sivuchya Bight that was caused by transboundary atmospheric transport. All of detected concentrations exceed natural background values for the North-Western part of the Sea of Japan. The authors show that there has been a distinct change in the environmental situation in the the Posyet Bay since 1998: the concentration of lead has sharply decreased, the content of zinc, copper and cadmium has decreased, it could be connected with influence reduction in the free economic zone, located on the Chinese side on the Tumannaya River.

New species of the genus Sagitta sensu str. (Chaetognatha) from the Sea of Japan with description of an original staining and dissection technique

2008 ◽  
Vol 17 (1) ◽  
pp. 3-6
Author(s):  
A.P. Kassatkina
Keyword(s):  
New Species ◽  
Sea Of Japan ◽  
The Sea Of Japan ◽  
The World ◽  
Maturation Stages ◽  
Dissection Technique ◽  
A New Species ◽  
World Fauna

A detailed description, figures of a new species Sagitta sublica sp. nov. and the original techniques of research are presented. A key of species and subspecies of the world fauna of the Sagitta sensu str. Quoy et Gaimard, 1827 (for individuals at maturation stages III-V) is done.

A new Platambus from Sichuan, with new records of species of the P. sawadai group from China (Coleoptera: Dytiscidae: Agabinae)

Zootaxa ◽  
2019 ◽  
Vol 4612 (4) ◽  
pp. 533
Author(s):  
JIŘÍ HÁJEK ◽  
TAO ZHANG
Keyword(s):  
New Species ◽  
Male Genitalia ◽  
New Records ◽  
Dorsal Surface ◽  
Species Group ◽  
Sichuan Province ◽  
Median Lobe ◽  
A New Species

Platambus binliui sp. nov. from Sichuan Province, China, is described and illustrated. It belongs to the P. sawadai species group sensu Nilsson (2000). The new species differs from other species of this group by the larger body, punctation of the dorsal surface and shape of male genitalia. New records of members of the P. sawadai group from China are provided: Platambus micropunctatus Nilsson, 2003 (Guangdong), P. punctatipennis Brancucci, 1984 (Fujian, Guangdong, Guizhou, Jiangxi, Zhejiang), P. regulae Brancucci, 1991 (Yunnan), representing a new species for Chinese fauna, and P. wangi Brancucci, 2006 (Hubei). Habitus and median lobe photographs for all mentioned species are provided. 

A new species of the genus Careproctus (Liparidae) from the Sea of Japan

2011 ◽  
Vol 58 (4) ◽  
pp. 350-354 ◽  
Author(s):  
Yoshiaki Kai ◽  
Shinichiro Ikeguchi ◽  
Tetsuji Nakabo
Keyword(s):  
New Species ◽  
Sea Of Japan ◽  
The Sea Of Japan ◽  
A New Species
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