О сроках сохранения фертильности икры и эмбриональном развитии минтая Gadus chalcogrammus (Gadidae) северной части Охотского моря

Experimental work was carried out to find out the timing of the fertility preservation for eggs remaining in the body cavity of the North Sea Alaska Pollock females after spawning, as well as the possibility of their normal course of embryogenesis. It was established that eggs remaining after spawning in the pollock female body cavity are not resorbed simultaneously. 2 months after mass spawning, 2.7 % of them still retain fertility, and, with artificial insemination, they are characterized by high survival, suffering no violations during embryogenesis. Data on the embryonic development of the species, the timing of the steps and main stages of embryogenesis, and the amount of heat required to achieve them are given. It is shown that pollock eggs and pre-larvae from residual fertility are significantly smaller in metric parameters than those from natural spawning, but morphologically are identical to them. Regional features of morphometric indicators for eggs and newly hatched pollock larvae in the northern part of the Sea of Okhotsk were revealed.