Contribution to the flora of marine algae of the coastal zone of the northeastern part of the Sea of Okhotsk

2018 ◽  
Vol 52 (1) ◽  
pp. 63-73
Author(s):  
N. V. Evseeva
Keyword(s):  
Coastal Zone ◽  
Sea Of Okhotsk ◽  
Marine Algae ◽  
Herbarium Material ◽  
Northeastern Part ◽  
The Sea Of Okhotsk ◽  
The Family ◽  
First Time

The revision of the herbarium material, collected in the northern part of the Sea of Okhotsk in 1965–1966 and stored in VNIRO, allowed to expand the taxonomic list of macrophyte algae of the coastal zone of this area. The locations of discovery of 24 previously unmentioned species are described. Myrionema balticum, Ulvella repens, Syncoryne reinkei, Acrochaetium arcuatum were found in the Sea of Okhotsk for the first time. Most species new for the Sea of Okhotsk is represented by epiphytes of the family Ulvellaceae (Chlorophyta). The final taxonomic list of this region, including literature data, consists of 169 species.

Decapodid stage of Neocrangon communis (Decapoda, Crangonidae) from the eastern part of the Sea of Okhotsk

2016 ◽  
Vol 25 (1) ◽  
pp. 13-22
Author(s):  
N.A. Sedova ◽  
S.S. Grigoriev
Keyword(s):  
Sea Of Okhotsk ◽  
General View ◽  
Characteristic Shape ◽  
The Sea Of Okhotsk ◽  
First Time ◽  
Distinguishing Features

For the first time the morphology of the decapodid stage of Neocrangon communis is described in detail. The decapodid can be distinguished from those of the genera Argis, Crangon, and Mesocrangon by the morphology of their telson, antennae, antennulae, and carapace. The main distinguishing features of the decapodid of N. communis were two spines on medial line of the carapace, a short rostrum, relatively wide scaphocerite, characteristic shape and length of the terminal setae on the telson. Drawings of general view and some limbs are presented.

Polysertularella polyseriata, a new genus and species of hydroid (Hydrozoa; Leptothecata; Sertulariidae) from the Sea of Okhotsk

Zootaxa ◽  
2011 ◽  
Vol 3107 (1) ◽  
pp. 59
Author(s):  
ALEXANDER ANTSULEVICH
Keyword(s):  
Differential Diagnosis ◽  
Sea Of Okhotsk ◽  
Type Species ◽  
New Genus ◽  
New Genera ◽  
New Genus And Species ◽  
The Sea Of Okhotsk ◽  
The Family ◽  
Stem Type ◽  
A New Species

Polysertularella polyseriata, gen. et sp. nov., a hydroid referable to family Sertulariidae, is described from the eastern part of the Sea of Okhotsk. The new taxa is characterized by: multi-serial (5–8 rows) placement of hydrothecae on both stem and branches; a hydrothecal rim with four small cusps; an operculum with four equal flaps similar to but more flattened than that of Sertularella. Gonothecae are transversely corrugated and resemble those of many species assigned to Sertularella and Symplectoscyphus. They arise from hydrothecae-like tubes on the basal part of the stem and are disposed in opposite pairs, as in species of Synthecium.Sertulariidae, the largest family in Hydrozoa and with representatives from marine environments worldwide, is relatively well known. Discovery of new genera in the family is relatively infrequent. A diagnosis of a new genus and a description of a new species are given in this paper.Diagnosis. Sertulariidae with erect, branched colonies, with branches resembling hydrocaulus. Hydrothecae arranged in 5–8 longitudal rows along hydrocaulus and branches; hydrothecal rim with four very low cusps separated by shallow embayments; operculum of four equal triangular valves, flattened rather than pyramidal; hydranth with abcauline caecum. Gonothecae oval with strong transverse corrugations and rings, occurring in opposite pairs on lower part of stem. Type species. Polysertularella polyseriata, sp. n., designated herein. Notes and differential diagnosis. In most genera of Sertulariidae, hydrothecae have an alternate to opposite biserial arrangement on branches, and especially on the stem. A few genera in the family, including Abietinaria Kirchenpauer, 1884, Thuiaria Fleming, 1828, Sertularia Linnaeus, 1758, and Staurotheca Allman, 1888 include some species with multi-serial rows of hydrothecae on branches and very rarely on the stem as well. The nominal genus Selaginopsis Allman, 1876, originally established for sertulariids having hydrothecae in more than two longitudinal rows, is no longer recognized as valid in some works because of its artificial composition and differences among included species in operculum structure (Peña-Cantero et al., 1997). However, no species with a multiserial arrangement of hydrothecae and four-flapped operculum (resembling Sertularella) has been known in the family until now.

Megalopa of Mesocrangon intermedia (Decapoda: Crangonidae) from the eastern part of the Sea of Okhotsk

2014 ◽  
Vol 23 (2) ◽  
pp. 188-196
Author(s):  
N.A. Sedova ◽  
S.S. Grigoriev
Keyword(s):  
Sea Of Okhotsk ◽  
General View ◽  
The Sea Of Okhotsk ◽  
First Time ◽  
Distinguishing Features ◽  
Antennal Scale

For the first time megalopa of Mesocrangon intermedia is described. The megalopa can be distinguished from that of the Crangon and Neocrangon by the morphology of its telson and carapace. The main distinguishing features of megalopa of M. intermedia were two spines on medial line of the carapace, a relatively long rostrum, a relatively narrow antennal scale, and the distinctive length of the terminal setae on the telson. Drawings of general view and individual limbs are presented.

First records from Pacific Mexico of the rare deep-water mysid Ceratomysis spinosa (Crustacea, Peracarida, Mysida, Petalophthalmidae)

2015 ◽  
Vol 8 ◽  
Author(s):  
Michel E. Hendrickx
Keyword(s):  
Deep Water ◽  
Bering Sea ◽  
Posterior Margin ◽  
Sea Of Okhotsk ◽  
Eastern Pacific ◽  
Western Coast ◽  
The Sea Of Okhotsk ◽  
Lateral Margins ◽  
First Time ◽  
The Bering Sea

The deep-water mysidCeratomysis spinosaFaxon, 1893, previously known from Panama, Japan, the Sea of Okhotsk, the Bering Sea and Alaska, USA is reported for the first time off the western coast of Mexico, in the eastern Pacific. The specimens, a male of 27.5 mm in total length (TL) and five females of 28.5–34.5 mm TL, were collected between depths of 1296 and 1580 m. The telson is illustrated, showing numerous setae on the lateral margins, and longer, robust setae in the distal third and on the posterior margin.

Microbian Indication of Pollution of the Coastal Zone of the Sea of Okhotsk and Avacha Bay

2004 ◽  
Vol 30 (2) ◽  
pp. 121-126 ◽  
Author(s):  
E. V. Zhuravel' ◽  
I. P. Bezverbnaya ◽  
L. S. Buzoleva
Keyword(s):  
Coastal Zone ◽  
Sea Of Okhotsk ◽  
The Sea Of Okhotsk ◽  
Avacha Bay

scholarly journals New Records of Rare Psychrolutid Fishes (Psychrolutidae) in the Sea of Okhotsk

2021 ◽  
Vol 61 (5) ◽  
pp. 680-684
Author(s):  
P. A. Saveliev
Keyword(s):  
Rare Species ◽  
Sea Of Okhotsk ◽  
Pacific Coast ◽  
New Records ◽  
Kuril Islands ◽  
Northwestern Part ◽  
The Sea Of Okhotsk ◽  
The Pacific ◽  
Northern Pacific ◽  
First Time

Abstract Two rare species of psychrolutid fish (Psychrolutidae) were found in the Sea of Okhotsk. Psychrolutes dolganovi was found at a depth of 142 m near Urup Island (southern Kuril Islands); earlier the species was known only from the holotype collected off the Pacific coast of Iturup Island. This species is recorded in the Sea of Okhotsk for the first time. P. pustulosus was collected at depths of 205–400 m along central part of Kuril Islands and in the northwestern part of the Sea of Okhotsk at depths of 240–294 m. A key to the species of the genus Psychrolutes inhabiting the northern Pacific Ocean is presented.

Interseasonal variability in methane concentrations and its fluxes on water-atmosphere border in the western part of the Sea of Okhotsk

2019 ◽  
Vol 59 (6) ◽  
pp. 944-951
Author(s):  
A. I. Obzhirov ◽  
G. I. Mishukova ◽  
R. B. Shakirov ◽  
V. F. Mishukov ◽  
E. V. Maltseva ◽  
...  
Keyword(s):  
Sea Of Okhotsk ◽  
Sea Water ◽  
Methane Flux ◽  
Water Area ◽  
Average Wind Speed ◽  
The Sea Of Okhotsk ◽  
Average Wind ◽  
Methane Fluxes ◽  
Interseasonal Variability ◽  
First Time

For the first time subannual variability of methane fluxes on the water-atmosphere border in the water area of the Sea of Okhotsk, located eastward to Sakhalin Island, is shown. Variability of methane fluxes is determined by the presence and activity of submarine methane sources and is connected to the seasonal changes in hydrological and hydrochemical parameters of the sea water and the structure of of currents in the region under study. In spring and autumn the average fluxes are higher, than in the summer period. Within the summer modification of water and increase of stratification, the methane flux from the sea surface is reduced. In autumn, as a result of the autumnal convection of water and high average wind speed, methane, accumulated in transitional waters, is emitted into the atmosphere.

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