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Food Spectrum of the Australian Redclaw Crayfish Cherax quadricarinatus (Von Martens, 1868) (Decapoda, Parastacidae) in the Ponds of Astrakhan Oblast

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Abstract

For the first time, the data on the feeding habits of the Australian red claw crayfish Cherax quadricarinatus in water bodies of Russia are presented. The studies were carried out during the cultivation of crayfish in three ponds of the scientific and experimental complex of aquaculture BIOS of the Volga-Caspian branch of the Russian Federal Research Institute of Fisheries and Oceanography (VNIRO) in Astrakhan oblast in 2022. The food spectrum of C. quadricarinatus was dominated by plant remains and detritus (mainly rotting parts of cane), they were noted in all stomachs with food, and their share in the virtual food bolus constituted 82.4% on average. The share of the animal component in the virtual food bolus was 12.8% on average, and it was represented mainly by macrobenthos. Planktonic crustaceans did not make up a significant proportion in the virtual food bolus. In total, 20 taxa of invertebrates were found in stomachs. Among the benthic species, larvae of Odonata, chironomids, and larvae and imagoes of Coleoptera predominated. A preliminary assessment of the possible impact of crayfish Cherax quadricarinatus on ecosystems when it penetrates into natural water bodies of the South of Russia has been carried out.

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ACKNOWLEDGMENTS

The authors are grateful to R.R. Tangatarova and B.M. Ankesheva, the employees of the Volga-Caspian Branch of the Russian Federal Research Institute of Fisheries and Oceanography, for their assistance in carrying out the work, as well as E.S. Chertoprud, Central Institute of the Russian Federal Research Institute of Fisheries and Oceanography, for consultations on the determination of plankton.

Funding

The research was carried out within the framework of the state assignment of the Russian Federal Research Institute of Fisheries and Oceanography on the topic “Development of Full-Cycle Technologies for Growing Promising Aquaculture Objects, Taking into Account Regional Specifics.”

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  1. Russian Federal Research Institute of Fisheries and Oceanography, 105187, Moscow, Russia

    L. V. Vorob’eva, R. R. Borisov & N. P. Kovacheva

  2. Volga-Caspian Branch, Russian Federal Research Institute of Fisheries and Oceanography, 414056, Astrakhan, Russia

    O. V. Pyatikopova

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All applicable international, national, and/or institutional guidelines for the care and use of animals were followed. The objectives of this study did not require the approval of scientific ethics committees because the experimental work was carried out within the framework of the Convention on the Conservation of Biodiversity (5 June 1992, Rio de Janeiro, Article 8, Item h), i.e., it includes the elimination of alien species that threaten ecosystems, habitats or species.

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Vorob’eva, L.V., Borisov, R.R., Kovacheva, N.P. et al. Food Spectrum of the Australian Redclaw Crayfish Cherax quadricarinatus (Von Martens, 1868) (Decapoda, Parastacidae) in the Ponds of Astrakhan Oblast. Russ J Biol Invasions 15, 146–157 (2024). https://doi.org/10.1134/S2075111724700024

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