Ichthyoplankton сomplexes of the coastal aquatory of South-Eastern Crimea
T. N. PETROVA1, T. N. KLIMOVA2, I. V. POPOV3
1Federal state budgetary scientific institution Federal Research Center "A.O. Kovalevsky Institute of Biology of the Southern Seas of RAS", T. I. Vyazemsky Karadag Scientific Station, Feodosia, Russia
2Federal state budgetary scientific institution Federal Research Center "A.O. Kovalevsky Institute of Biology of the Southern Seas of RAS", Sevastopol, Russia
3Don State Technical University, Institute of Live Systems, Rostov-on-Don, Russia
Keywords: ichthyoplankton, fish eggs and larvae, abundance, species diversity, spawning, southeastern Crimea, Black Sea
Abstract
The article analyzes retrospective literature data and the results of our own research on ichthyoplankton in the coastal waters of southeastern Crimea (the waters of the Karadag Nature Reserve) over the period 1950-2024. Samples were collected in the coastal zone using vertical and horizontal surface fishing methods. Information on taxonomic composition, structure, and abundance dynamics of ichthyoplankton are presented. During a 70-year research period, eggs and larvae of 66 fish species from 33 families were identified. The recovery of ichthyoplankton abundance and species composition after the collapse of the Black Sea ecosystem in the 1990s occurred against the background of climatic changes that significantly impacted the hydrological regime and thermohaline structure of waters in the Azov-Black Sea Basin. In recent years, there has been an increase in the number of species, including due to the introduction of Mediterranean species, and a change in the dominance and sub-dominance of species has occurred.
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