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http://dx.doi.org/10.5657/kfas.2010.43.5.489

Variations in Reserved Nutrient Consumption and Growth of Pacific Oyster (Crassostra gigas) Larvae during Starvation  

Hur, Young-Baek (Southeast Sea Fisheries Research Institute, NFRDI)
Kim, Tae-Eic (Southwest Sea Fisheries Research Institute, NFRDI)
Lee, Seung-Ju (Southeast Sea Fisheries Research Institute, NFRDI)
Hur, Sung-Bum (Department of Marine Bio-materials and Aquaculture, Pukyong National University)
Publication Information
Korean Journal of Fisheries and Aquatic Sciences / v.43, no.5, 2010 , pp. 489-494 More about this Journal
Abstract
The nutritional demand of oyster larva (Crassostrea gigas) were investigated to determine the optimal culture conditions and improve micro-algae utilization. Changes in nutrients and shell growth were examined in fed and 96-h (48 h in late umbone stage) oysters at four larval stages. Shell growth increased significantly in D shape larvae, regardless of feeding variations. No growth was observed in starved larvae, except in shell length of umbone (to 11.9 ${\mu}m$). Fed larvae showed significant growth in all development stages (P < 0.05). During starvation, lipids were most significantly decreased in all larval stages (by 76.8%, 68.3%, 76.3%, and 40.3%, respectively), followed by protein (41.1%, 31.1%, 33.1%, 16.7%) and nitrogen-free extracts (40.8%, 24.3%, 36.9%, 20.1%), Gross energy (kcal/g) consumption in each larval stage was 49.6%, 35.1%, 39.1%, and 20.4%, respectively. Our results indicate that lipids are the most important energy source during the early larval development stages of C. gigas.
Keywords
Pacific oyster; Crassostrea gigas; Larval growth; Starvation; Nutritional demand;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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