INTERANNUAL POPULATION DYNAMICS OF THE CTENOPHORE &lt;i&gt;BEROE OVATA&lt;/i&gt; BRUGUIÈRE, 1789 AT THE OUTER SHELF OF SEVASTOPOL BAY OF THE BLACK SEA
Journal: Russian Journal of Biological Invasions
Year: 2023

Based on the results of cruises and long-term monitoring at the outer shelf of Sevastopol Bay, the interannual dynamics of the state of the population of the alien ctenophore Beroe ovata in the Black Sea for 2000-2021 was analyzed. It was established that in recent years the ctenophore was found in plankton earlier than usual, the period of its active pelagic life increased to 7-8 months, and the body length in juveniles decreased from 40 to 20-25 mm. Three seasonal periods are distinguished, wh