Open AccessSome biological characteristics of the Far Eastern sea cucumber (<i>Apostichopus japonicus</i>) from the Severnaya Bay of the Slavyanka Gulf (Japan Sea)
Author(s) -
И. В. Матросова,
A. A. Politayeva
Publication year - 2021
Publication title -
issledovaniâ vodnyh biologičeskih resursov kamčatki i severo-zapadnoj časti tihogo okeana/issledovaniâ vodnyh biologičeskih resursov kamčatki i severo-zapadnoj časti tihogo okeana
Language(s) - English
Resource type - Journals
eISSN - 2782-6236
pISSN - 2072-8212
DOI - 10.15853/2072-8212.2021.60.63-68
Subject(s) - sea cucumber , bay , apostichopus japonicus , gonad , oceanography , fishery , biology , geology , ecology , anatomy
Some of biological traits of the Far Eastern sea cucumber from the Severnaya Bay were examined in 2016 and 2017. Body length of sea cucumber individuals varied from 3.6 to 23.4 cm. Dermo-muscular bag weight was higher in 2017 (137.5 g). Individual ages were 1–4 years in 2016 and 1–5 years in 2017. Sex ratio was near 1:1 in 2016 and 2017. During the period of the research gonad index was maximal in June – 10.6%. Spawning began in the 2 nd decade of June and finished in the 2 nd decade of July.