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Spat Collection of the Ark shell, Scapharca in the West Coast of Korea  

송홍인 (국립수산진흥원 서해수산연구소)
박광재 (국립수산진흥원 서해수산연구소)
조영록 (국립수산진흥원 서해수산연구소)
박영제 (국립수산진흥원 서해수산연구소)
Publication Information
Journal of Aquaculture / v.15, no.2, 2002 , pp. 95-101 More about this Journal
Abstract
During the periods from lily to October, 2000 in Hongseong and lucy to October, 2001 in Taean in the west coast of Korea, the following environmental conditions prevailed : water temperature : 22.0~26.817, salinity 27.23 ~30.80%, dissolved oxygen 4.12 ~6.26 ml/l, pH 7.89 ~8.09, phosphate 0.39 ~0.65 $\mu m$ , inorganic nitrogen 5.05~9.26 $\mu m$, suspended solid 5.4~20.8 mg/l and chemical oxygen demand 1.12~1.87 mg/l. The B-shaped veliger larvae of the Ark shell occurred in maximum number at $25^{\circ}C$ prevailing from mid-August at Hongseong and Taean. Full grown larvae reached maximum abundance from late August. To identify the effectiveness of the substratum for spat collection, raschel net were tested to Larval settlement. The most effective depth to collect the larvae in natural environment was the collectors suspended at 7~8 m depth. At these depths, about 49 to 94 spats were found on the collector (40$\times$50 cm), The growth of shell height (Y) to shell length (X), and total weight (W) to shell length (L) could be formulated as follows respectively: Hongseong: SH = 0.7168 SL -0.6466 ( $r^2$ = 0.9839), TW = $0.0001SL^{3.1705}$ ($r^2$ = 0.9882) Taean: SH = 0.736 SL -0.8824 ($r^2$ : 0.9899), TW : 0.00005 $SL^{3.3731}$ ($r^2$ : 0.9899)
Keywords
Ark shell; Scapharca satowi; Spat collection; Planktonic larvae; Larval growth; Environmental; condition; Juvenile growth;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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