Бентические инфузории заливов западной части Каспийского моря

Abstract

Установлен видовой состав инфузорий микробентоса в двух заливах западного побережья Каспийского моря. Показаны распределение их по биотопам, сезонная динамика численности, общность с фауной инфузорий Черного и Японского морей, а также морей Атлантики.In two bays of the Western part of the Caspian Sea 91 species of Infusoria were found, including 9 hitherto unknown for the sea. Biotopically they are distributed as following: medium grain sand — 88 species, Algae and detrite — 60, fine grain sand — 57, coarse grain sand — 38, mud — 20. The most specific diversity was found in sands containing 0.51—0.78 per cents of organic substnces. Three population peaks are pointed out for Infusoria: spring, summer and autumnal. The abundance of Infusoria reaches in the summer 3.5 to 5 millions individuals per 1 m2. Comparison of the data obtained in the Caspian Sea with those of Atlantic and Japan Sea showed the fair similarity in specific and generic composition of Infusoria.