Open AccessЭмбриональное и раннее личиночное развитие бурого терпуга Hexagrammos octogrammus (Scorpeniformes: Hexagrammidae) северной части Охотского моря
Author(s) -
R. R. Yusupov,
Rus. R. Yusupov
Publication year - 2021
Publication title -
vestnik severo-vostočnogo naučnogo centra dalʹnevostočnogo otdeleniâ ran
Language(s) - English
Resource type - Journals
ISSN - 1814-0998
DOI - 10.34078/1814-0998-2021-1-89-100
Subject(s) - hatching , human fertilization , incubation , yolk , zoology , ontogeny , biology , larva , embryo , anatomy , fishery , ecology , endocrinology , biochemistry
The roe of Hexagrammos octogrammus from of the Northern part of the Sea of Okhotsk was incubated in an experiment. A detailed description of the morphology of the species development, from fertilization of eggs to the fry transition to external nutrition, accompanied by microphotographs of eggs and larvae fry in vivo, is given. It was established that the fertilized eggs of H. octogrammus from the northern part of the Sea of Okhotsk are 1.75 mm in diameter with fluctuations of 1.61-1.98 mm. Hatching of embryos occurs after 33.5 days of incubation at an average temperature of 11.5°C. Hatched yolk fry is 7.78 mm (7.15-8.06 mm) of TL (Total length) and 7.39 mm (6.83-7.68 mm) of SL (Standard length). Upon reaching TL of 8.74 mm (8.14-9.26 mm) and SL of 8.21 mm (7.63-8.86 mm), the fry switch to external feeding. The regional features of the masked greenling pigmentation in early ontogenesis are revealed.