한국수산과학회

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  • pISSN : 2234-8395
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  • eISSN : 2234-1757

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kfas, vol. 53, no. 1, pp.19-26, February, 2020
DOI. https://doi.org/10.5657/KFAS.2020.0019

Maturity and Spawning of Pacific Sand Eels Ammodytes japonicus in
Coastal Waters near Donghae, Gangwon-do
강원도 동해시 연안에 서식하는 까나리(Ammodytes japonicus)의 성숙과
산란

김소라·김종빈1·이수정1·양재형1*
국립수산과학원 연근해자원과, 1국립수산과학원 동해수산연구소 자원환경과

The maturity and spawning of pacific sand eels Ammodytes japonicus, was investigated using samples collected by
gill net in coastal waters near Donghae, Gangwon-do, from January 2017 to December 2018. Monthly changes were
analyzed in maturity stage, gonadosomatic index (GSI), egg diameter, fecundity (F), and total length (TL) at 50%
group maturity. The average TLs of female and male A. japonicus were 18.5 and 18.1 cm, respectively. The spawning
period was from November to March, with the peak from December to February based on monthly changes in
GSI and maturity stages. The egg diameter during the spawning-capable stage was 300-1000 (main mode 500-600)
μm. Fecundity ranged from 6,411 eggs at 16.7 cm fork length to 45,771 eggs at 24.7 cm fork length. The relationship
between TL and F was F=0.00005TL4.2715 (R2=0.7216), such that F increased with TL. TL at 50% group maturity was
estimated to be 15.1 cm for both sexes.

Keyword : Maturity, Spawning, Pacific sand eels, Sand lance, Ammodytes japonicus

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