Effect of Water Temperature on the Size–Age Structure of the Population of Black Sea Mollusks Hydrobia acuta and on Invasion with Parthenites Gynaecotyla adunca

The influence of water temperature on the size–age structure and size of the population of mollusks Hydrobia acuta and their invasion with parthenites of the microphallid trematode Gynaecotyla adunca in Kazachya Bay (Black Sea) has been studied. It was revealed that temperature changes explain about 60% of the variance in the invasion extensity, and about 30% of the variance in the abundance of mollusks. The established correlation dependencies can be used for an approximate assessment of the influence of water temperature on the indicators of the population size of mollusks and their infestation with parthenites of trematodes in the Black Sea water area.