Reproductive biology and embryonal development of pacific capelin <i>Mallotus villosus catervarius </i>from the Tauiskaya Bay (northern part of the Okhotsk Sea)

Abstract

Reproductive biology of embryogeny and early ontogenesis is considered for pacific capelin Mallotus villosus catervarius (Pennant) from the Tauiskaya Bay in the northern Okhotsk Sea on the data of long-term sampling. The stages of periblastic sinus and Kupffer’s vesicle are described for the first time for the genus Mallotus. Results of the study allow to assume development of the embryonic vascular system of respiration for the capelin embryo. Tendency to the pacific capelin fecundity increasing is observed in the last five decades conditioned by its abundance lowering and consequent increase of the older fish percentage.

Keywords

• тихоокеанская мойва
• размножение
• эмбриональное развитие
• предличинка
• личинка