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Abstract <p>The fauna of the Oka Nature Reserve includes 13 species of fish of alien origin. The most common are three species: the Amur sleeper <i>Perccottus glenii</i> Dybowski, the lake minnow <i>Phoxinus percnurus</i> Berg, and the Prussian carp <i>Carassius auratus</i> (L.). This article presents an analysis of the current state of alien fish species in the reserve: their distribution in water bodies, their relationships with native species, and the mutual influence of alien species. A number of natural factors influencing the success of their introduction into various types of water bodies have been determined, including the size of the lake, its flood duration, the height of the spring flood, temperature conditions and the nature of precipitation, the level of groundwater, and the degree of the projective cover of macrophytes in water bodies.</p>

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Some Results of the Expansion of Alien Fish Species in the Water Bodies of the Oka Nature Reserve (Ryazan Oblast)

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • E. Yu. Ivancheva,
  • V. P. Ivanchev

摘要

Abstract

The fauna of the Oka Nature Reserve includes 13 species of fish of alien origin. The most common are three species: the Amur sleeper Perccottus glenii Dybowski, the lake minnow Phoxinus percnurus Berg, and the Prussian carp Carassius auratus (L.). This article presents an analysis of the current state of alien fish species in the reserve: their distribution in water bodies, their relationships with native species, and the mutual influence of alien species. A number of natural factors influencing the success of their introduction into various types of water bodies have been determined, including the size of the lake, its flood duration, the height of the spring flood, temperature conditions and the nature of precipitation, the level of groundwater, and the degree of the projective cover of macrophytes in water bodies.