한국수산과학회

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kfas, vol. 54, no. 6, pp.1000-1006, December, 2021
DOI. https://doi.org/10.5657/KFAS.2021.1000

Maturation and Spawning of the Common Octopus Octopus vulgaris in
the Coastal Waters of Yeosu, Korea
여수 연안에 출현하는 참문어(Octopus vulgaris)의 성숙과 산란

양혜진·진수연·김도균·김희용1·문성용1*·백근욱
경상국립대학교 해양생명과학과/양식생명과학과/해양산업연구소/해양생물교육연구센터, 1국립수산과학원 남해수산연구소

The maturity and spawning of the common octopus Octopus vulgaris were studied using 317 samples collected
monthly from January to December of 2020 from the coastal waters of Yeosu, Korea. The mantle length (ML) of O.
vulgaris ranged from 5.1 to 19.7 cm and body weight (BW) ranged from 117.6 to 3,645.4 g. We analyzed monthly
changes in sex ratio, gonadosomatic index (GSI), histological maturity stage, and body weight at 50%, 75% and
97.5% group maturity. The sex ratio was 1:1.02, which was not significantly different from the value that expected.
Based on histological observation of the gonad development and gonadosomatic index, the spawning periods lasted
throughout the year, with peak spawning periods estimated from March to April and July to August. The percentages
of sexually mature females estimated using a logistic equation were over 50% at 554.46 g BW, 75% at 1,134.38 g
BW and 97.5% at 2,474.22 g BW respectively.

Keyword : Cephalopoda, Common octopus, Maturity, Spawning

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