МОРФОФИЗИОЛОГИЧЕСКАЯ ХАРАКТЕРИСТИКА ГОНАД ПОЛОВОЗРЕЛЫХ САМОК PERCCOTTUS GLENII DUBOWSKI, 1877 реки ЛОПАТНА

Нина ФУЛГА, Ион ТОДЕРАШ, Дмитрий БУЛАТ, Денис БУЛАТ, Надежда РАЙЛЯН Институт зоологии АН Молдовы

Abstract

MORPHOLOGICAL AND PHYSIOLOGICAL CHARACTERISTICS OF THE GONADS OF MATURE FEMALES PERCCOTTUS GLENII DUBOWSKI, 1877 IN LOPATNA RIVER

Under the conditions of the Lopatna river the females of Chinese sleeper spawn three portions of eggs. It was revealed the high degree of asynchrony in the development of oocytes, which provides portion spawning in the period of the reproductive cycle. In the reproduction season in adult females was registered higher gonadosomatic index value before the first spawning, in comparison with the subsequent generations of oocytes, preparing for spawning. Pathological changes in the development of sexual cells in chinese sleeper females in the given water basin are shown. Keywords: invasive species, short life cycle, oogenesis, vitellogenesis, portioned spawning.