Abstract
The American signal crayfish Pacifastacus leniusculus (Dana, 1852) has been found for the first time in Lake Zaprudnoe of the Saimaa Canal system between Lake Saimaa (Finland) and Vyborg Bay (Russia). The Saimaa Canal is part of a large lake–river network connecting the waters of the Gulf of Finland and Lake Ladoga. This allows us to expect a wide distribution of P. leniusculus not only in the water bodies of Leningrad oblast, but also in northwestern Russia. The captured part of the population included nine individuals. The sex ratio in the population was significantly biased towards males: 8♂ and 1♀.
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ACKNOWLEDGMENTS
We are deeply grateful to Cand. Sci. (Biol.) O.I. Mitskevich and members of the St. Petersburg Branch of the Russian Federal Research Institute of Fisheries and Oceanography (Berg GosNIORKh) A.V. Shatskii and O.N. Susloparova for assistance in preparing this article.
Funding
This study was performed as part the state program on topic 46 “Assessment of the Stock Status and Prospects for Involving Underutilized Aquatic Biological Resources in Fishery. Monitoring of the Distribution and Abundance of Alien Invertebrate Species,” subtopic 46.1 “Assessment of the Stock Status and Feasibility of Involvement of Underutilized Inland Water Invertebrates in Fishery. Monitoring of the Distribution and Abundance of Alien Invertebrate Species.” Stage 3. Berg GosNIORKh. “Study of the Water bodies of Leningrad Oblast to Assess the Distribution and Stock Status of Native and Invasive Crustacean Species.”
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Translated by D. Zabolotny
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Tamulyonis, A.Y., Stratanenko, E.A. & Zuyev, Y.A. Finding of the American Signal Crayfish Pacifastacus leniusculus (Decapoda: Astacidae) in Leningrad Oblast (Russia). Inland Water Biol 16, 855–859 (2023). https://doi.org/10.1134/S1995082923050176
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DOI: https://doi.org/10.1134/S1995082923050176