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http://dx.doi.org/10.5657/kfas.2009.42.1.063

Effects of Adhesive Substrates and Bottom Materials on Release of Fertilized Eggs by Pacific Cod, Gadus macrocephalus  

Lee, So-Gwang (Gyeongsangnamdo Fisheries Resources and Research Institute)
Park, Kyung-Dae (Gyeongsangnamdo Fisheries Resources and Research Institute)
Gwak, Woo-Seok (Division of Marine Bioscience, The Institute of Marine Industry Gyeongsang National University)
Publication Information
Korean Journal of Fisheries and Aquatic Sciences / v.42, no.1, 2009 , pp. 63-67 More about this Journal
Abstract
The effects of adhesive substrates and bottom materials on the release of fertilized eggs by the Pacific cod, (Gadus macrocephalus) were examined to find an effective release method. Palm twin as an adhesive substrate displayed a significantly elevated adhesive rate compared to gulf weed. However, the survival rate of the fertilized eggs attached to palm twin was as low as 17.5% 8 days after fertilization (DAF). In contrast, fertilized eggs in the absence of adhesive substrate displayed the highest survival rate (47.0%). Concerning bottom materials, the survival rate of fertilized eggs on sand was significantly high (approximately 51.1%) on 8 and 9 DAF. The observations indicates that adhesive substrates are not needed and spawning ground bottom materials such as sand or mud should be considered when releasing fertilized eggs of Pacific cod.
Keywords
Pacific cod; Fertilized eggs; Adhesive substrates; Bottom materials;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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