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Friday, March 23, 2018

The Karyotype Instability of Wild Organisms Could Serve as a General Sign of Adverse Environmental Impact


1Animal Genetics Lab., Department of Genetics & Breeding, Saint-Petersburg State University,
Saint-Petersburg, RUSSIA, 199034
The current paper demonstrates by cytogenetic analysis of dividing Asellus aquaticus cells at the ana-telophase stage that the degree of mitotic disturbances, including chromosome structural aberrations and distorted chromosome segregation frequencies, corresponds to the degree of anthropogenic pollution of fresh water lakes, ponds and other sources. Several locations in the Saint-Petersburg region and its suburbs were investigated. While the spontaneous frequency of mitotic disturbances in “clean” water locations variedslightly, around 2%, polluted locations showed corresponding levels 5-10 times greater. The possibility and practicality of using mitotic aberrations in different species as a universal indicator of water and soil quality is discussed. 




Key words: cytogenetic monitoring, aquatic ecosystems, crustacean, Isopoda





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