Condition and Sperm Characteristics of Perch Perca fluviatilis inhabiting Boreal Lakes Receiving Metal Mining Effluents
Karjalainen, J., Arola, H. E., Wallin, J., Väisänen, A., & Karjalainen, A. K. (2020). Condition and Sperm Characteristics of Perch Perca fluviatilis inhabiting Boreal Lakes Receiving Metal Mining Effluents. Archives of Environmental Contamination and Toxicology, 79(2), 270-281. https://doi.org/10.1007/s00244-020-00752-9
DisciplineYmpäristötiedeEpäorgaaninen ja analyyttinen kemiaAkvaattiset tieteetEnvironmental ScienceInorganic and Analytical ChemistryAquatic Sciences
© The Authors 2020
One of the world’s largest, but low-grade, sulfide nickel deposits in northeastern Finland has been exploited by a bioheapleaching technology since 2008. Bioheapleaching is a relatively new, cost-effective technology, but humid climate, e.g., in boreal temperate environments, causes challenges to the management of the water balance in the ore heaps with wide catchment area, and the mining effluents have caused substantial metal and salting contamination of the receiving waterbodies. In our study, the impacts of metal-extracting bioheapleaching mine effluents on muscle and liver element concentrations, body condition, liver and testes mass, and sperm count and motility of male perch Perca fluviatilis were analysed. Liver, testes, and carcass mass of perch in relation to their length were lower in the mining-impacted lakes than in the reference lake, which may be due to the metal contamination, food availability, and energy demand under multistressor conditions. The sperm counts of the males in the mining-impacted lakes were lower, but the endurance of their sperm motility was longer than the endurance of sperm of the reference males. These findings suggested that the condition and sperm characteristics of perch were altered in lakes receiving metal mining effluents. Measured variables seem to be useful indicators for metal mining impacts on freshwater fish but only if high natural variation in these characteristics can be controlled by multiyear monitoring scheme. ...
PublisherSpringer Science and Business Media LLC
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Related funder(s)Research Council of Finland
Funding program(s)Academy Project, AoF; Academy Research Fellow, AoF
Additional information about fundingThis study was supported by the Academy of Finland (Grants 281800, 285296), Finnish Doctoral Programme on Environmental Science and Technology (EnSTe), Emil Aaltonen Foundation and Olvi Foundation.
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