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Abstract <p>In ten small anthropogenic water bodies located in the Cis-Urals, fish have been caught and water samples were taken to analyze the content of dissolved mineral forms of the nitrogen. Fluctuating asymmetry indicators of the number of pores in seismosensory canals of four paired cover head bones of European perch individuals are determined. It is found that these indicators are positively and statistically significantly related to the average nitrate content in the studied water bodies in late spring. It is also noted that the relative abundance of European perch in fish communities of these water bodies decreases with an increase in the content of dissolved mineral nitrogen. The trends are discussed in two aspects of the possible toxicological and trophological effects of nitrates on individuals of this fish species.</p>

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The European Perch Perca fluviatilis as a Bioindicator of the Nitrogen Load to Anthropogenic Water Bodies: Toxicology and Trophology

  • 期刊论文

  • 发表日期：

    2025年6月1日

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  • B. G. Kotegov,
  • M. V. Larionov

摘要

Abstract

In ten small anthropogenic water bodies located in the Cis-Urals, fish have been caught and water samples were taken to analyze the content of dissolved mineral forms of the nitrogen. Fluctuating asymmetry indicators of the number of pores in seismosensory canals of four paired cover head bones of European perch individuals are determined. It is found that these indicators are positively and statistically significantly related to the average nitrate content in the studied water bodies in late spring. It is also noted that the relative abundance of European perch in fish communities of these water bodies decreases with an increase in the content of dissolved mineral nitrogen. The trends are discussed in two aspects of the possible toxicological and trophological effects of nitrates on individuals of this fish species.