Sea Urchin Embryogenesis as Bioindicators of Marine Pollution in Impact Areas of the Sea of Japan/East Sea and the Sea of Okhotsk

Archives of Environmental Contamination and Toxicology
Olga N LukyanovaAndrey A Mazur

Abstract

The embryogenesis of the sea urchin sand dollar Scaphechinus mirabilis was used as bioindicators of seawater quality from the impact areas of the Sea of Japan/East Sea (Peter the Great Bay) and the Sea of Okhotsk (northwestern shelf of Sakhalin Island and western shelf of Kamchatka Peninsula). Fertilization membrane formation, first cleavage, blastula formation, gastrulation, and 2-armed and 4-armed pluteus formation have been analyzed and a number of abnormalities were calculated. Number of embryogenesis anomalies in sand dollar larvae exposed to sea water from different stations in Peter the Great Bay corresponds to pollution level at each area. The Sea of Okhotsk is the main fishing area for Russia. Anthropogenic impact on the marine ecosystem is caused by fishing and transport vessels mainly. But two shelf areas are considered as "hot spots" due to oil and gas drilling. Offshore oil exploitation on the northeastern Sakhalin Island has been started and at present time oil is being drill on oil-extracting platforms continuously. Significant reserves of hydrocarbons are prospected on western Kamchatka shelf, and exploitation drilling in this area was intensified in 2014. A higher number of abnormalities at gastrula and pluteus...Continue Reading

References

Mar 17, 2009·Archives of Environmental Contamination and Toxicology·F GalganiM C Bertrandy
Nov 1, 2011·Aquatic Toxicology·Marianne FrantzenLionel Camus
Dec 4, 2013·The Science of the Total Environment·Diego RialMiguel A Murado

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Citations

Jul 16, 2017·Archives of Environmental Contamination and Toxicology·Tanya M Brown, Hideshige Takada
May 14, 2020·Journal of Environmental Science and Health. Part C, Toxicology and Carcinogenesis·Cecilia Nwadiuto AmadiOrish Ebere Orisakwe
Jan 14, 2021·International Journal of Environmental Research and Public Health·Xuanbo WangDeqi Xiong

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