Okhotsk Sea Fringed Sculpin Porocottus minutus (Cottidae) from Tauisk Bay of the Sea of Okhotsk

2019 ◽  
Vol 59 (1) ◽  
pp. 123-126
Author(s):  
E. A. Poezzhalova-Chegodaeva
2019 ◽  
Vol 14 (2) ◽  
pp. 35-47
Author(s):  
A. A. Derko ◽  
A. Yu. Alekseev ◽  
K. A. Sharshov ◽  
V. N. Burkanov ◽  
J. M. Jamalutdinov ◽  
...  

Aim. To evaluate the possibility of herpes viruses circulation and possible routes of transmission in population of Steller sea lions of the Sea of Okhotsk by combining a thorough literature study with screening of blood sera samples of Steller sea lion puppies of the Sea of Okhotsk obtained in 2008‐2012.Methods. We investigated 370 blood sera of puppies of the Steller sea lion (2008‐2012) from Tyulenij island, Chkalova island and from the Kurile Islands for the presence of antibodies to two members of the subfamily Alphaherpesvirinae and Gam‐ maherpesvirinae using enzyme‐linked immunosorbent assay (ELISA).Results. The data showed that out of 370 sera samples, 50 contained antibodies to the varicella‐zoster virus (subfamily Alphaherpesvirinae) and 46 – to the Epstein‐Barr virus (subfamily Gammaherpesvirinae).Main conclusions. The literature study revealed that the ecology peculiarities of species contribute to the realization of the main ways of transmission of herpes viruses between individuals. We were also able to identify possible risk factors for the transmission of non‐specific herpes viruses between Steller sea lion and the animals with which they are forced to coexist. The results obtained are in a good agreement with the literature data and indirectly confirm the circulation of herpes viruses in the Steller sea lion of the Kuril Islands, as well as the island Tyulenij. We observe a significant difference in the number of Steller sea lion puppies with the presence of antibodies to gamma‐herpes viruses on the Kuril Islands and the Okhotsk Sea is‐ lands (Р > 99,7). Differences in the number of Steller sea lion puppies with the presence of anti‐ bodies to alpha herpes viruses were not reliably detected. 


Fisheries ◽  
2020 ◽  
Vol 2020 (2) ◽  
pp. 43-50
Author(s):  
Yuri Semenov ◽  
Julia Elatinceva ◽  
Andrey Smirnov ◽  
Andrey Tkachenko

Based on the materials collected in 2019, the authors consider some peculiarities of bottom fish fishing (halibut, stingrays, giant grenadie, cod, lycodes, and broadbanded thornyhead) in the North Okhotsk subzone of the Sea of Okhotsk. The accompanying problems are shown; the measures to optimize fishing are proposed.


2018 ◽  
Vol 52 (1) ◽  
pp. 63-73
Author(s):  
N. V. Evseeva

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.


Author(s):  
Alexandra Romanova ◽  
Alexandra Romanova ◽  
Vladimir Anin ◽  
Vladimir Anin ◽  
Sergey Pletnev ◽  
...  

80 sediment stations collected along the meridian transect across the Sea of Okhotsk were studied in order to reveal patterns of dissolution based on planktonic foraminifera. The degree of calcite dissolution intensity from planktonic foraminifera determined by different indices (degree of fragmentation, presence of susceptible to dissolution species, benthos/ plankton ratio). The highest degree of dissolution evidenced by a large number of shell fragments and corroding walls were found in sediments from the area of the Kuril Islands. The most revealing measure of probable dissolution of foraminiferal shells in the central part of the sea is a low number and lack of thin-walled species. The effects of dissolution on foraminiferal shells were studied for dominated species Neogloboquadrina pachyderma sin and Globigerina bulloides using a scanning electron microscope. The results are important for understanding processes of sedimentation, the paleo-oceanologial reconstructions and for obtaining reliable results in isotope analyzes.


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