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Abstract <p>The species composition and distribution of juvenile fish in the pelagic zone of the Kara Sea in the ice formation period are described for the first time. In October 2023, fry and late larvae of nine fish species from six families were found in the catches of DSN (double-square micronectonic) and Bongo nets. The Arctic cod <i>Boreogadus saida</i> was the most abundant: its fry were concentrated at densities of 1–3 ind./m<sup>2</sup> in the northeastern Kara Sea, above the Central Kara Plateau. The second most abundant species was capelin <i>Mallotus villosus</i>, its late larvae were recorded above the St. Anna Trough and in the southwestern Kara Sea on the border with the Barents Sea. For the first time, fry of Atlantic cod <i>Gadus morhua</i> were found in the pelagic zone of the Kara Sea. Only Arctic–boreal species were found in the southwestern part of the sea, while both Arctic–boreal and Arctic species were found in the northeastern part. This is explained rather by seasonal succession and features of hydrological processes than by the borealization process.</p>

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Species Composition and Distribution of Early Fish Development Stages in the Pelagic Zone of the Kara Sea in the Ice Formation Period

  • 期刊论文

  • 发表日期：

    2026年2月1日

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  • A. V. Mishin,
  • A. A. Nedospasov,
  • Yu. V. Goncharov,
  • Ya. V. Shcheglova,
  • A. M. Orlov

摘要

Abstract

The species composition and distribution of juvenile fish in the pelagic zone of the Kara Sea in the ice formation period are described for the first time. In October 2023, fry and late larvae of nine fish species from six families were found in the catches of DSN (double-square micronectonic) and Bongo nets. The Arctic cod Boreogadus saida was the most abundant: its fry were concentrated at densities of 1–3 ind./m2 in the northeastern Kara Sea, above the Central Kara Plateau. The second most abundant species was capelin Mallotus villosus, its late larvae were recorded above the St. Anna Trough and in the southwestern Kara Sea on the border with the Barents Sea. For the first time, fry of Atlantic cod Gadus morhua were found in the pelagic zone of the Kara Sea. Only Arctic–boreal species were found in the southwestern part of the sea, while both Arctic–boreal and Arctic species were found in the northeastern part. This is explained rather by seasonal succession and features of hydrological processes than by the borealization process.