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ISSN : 1225-3480

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Vol.28 No.1

Effects of Water Temperatures on the Larval Development and Spat Growth of the Cockle Shell, Fulvia mutica

Kim, Jae-Min
Kim, Sang-Chel
Hur, Jun-Wook
Lim, Sang-Min
Kim, Young-Hun
Seon, Seung-Cheon
Kang, Kyoung-Ho
The Korean Journal of Malacology / The Korean Journal of Malacology, (P)1225-3480;
2012, v.28 no.1, pp.7-12
https://doi.org/10.9710/kjm.2012.28.1.007
Kim,, J. , Kim,, S. , Hur,, J. , Lim,, S. , Kim,, Y. , Seon,, S. , & Kang,, K. (2012). Effects of Water Temperatures on the Larval Development and Spat Growth of the Cockle Shell, Fulvia mutica. , 28(1), 7-12, https://doi.org/10.9710/kjm.2012.28.1.007

Abstract

The effect of water temperature on spawning induction, larval development, spat settling and its growth of the cockle shell, Fulvia mutica, were investigated to obtain the basic data for effective seed production. The eggs, which were randomly divided into 6 groups of water temperatures of 14, 17, 20, 23, 26 and $29^{\circ}C$, were transferred into 1 L beaker, respectively. The relationships between the water temperature and the required time (1/h, hour) by each egg developmental stage were calculated. Biological minimum water temperature and the cumulative water temperature until egg development of the veliger stage were calculated to be $0.1^{\circ}C$ and $397.3^{\circ}C$, respectively. The optimal water temperature for developmental bioassay of F. mutica was clarified to be $23^{\circ}C$. The required time for the embryo to become veliger larvae was 20 hours at $23^{\circ}C$.

keywords
Cockle Shell, Fulvia mutica, egg developmental, seed production

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