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http://dx.doi.org/10.9710/kjm.2016.32.3.189

Growth of the manila clam (Ruditapes philippinarum) cultured in Gomso tidal flat, Korea  

Lim, Hyun-Sig (Department of Marine and Fisheries Resources, Mokpo National University)
Publication Information
The Korean Journal of Malacology / v.32, no.3, 2016 , pp. 189-195 More about this Journal
Abstract
The growth of manila clam Ruditapes philippinarum inhabiting culturing ground was studied in west coast Gomso tidal flat of Korea, from August 2000 to July 2001. The density of the clam was the highest in November 2000, showing a monotonic decrease afterwards over the study period. Mean density was $1,224ind./m^2$ during the study period. Size frequencies of the clam showed a unimodal distribution, and its mode increased with shell growth over time. Although the growth of shell length of manila clam was monotonic, the growth rates decreased between July 2001 and February 2002 and increased from March 2002. The biomass of the clam also increased with time, in which the increments becoming larger since March 2002. The clam shell length had linear relationship to shell height, and had logarithmic relationship to total weight, meat wet weight, dry meat weight, and AFDW. Condition index of the clam increased continuously until April, decreasing afterwards in 2001. The pattern was similar in 2002. Based on fluctuations in condition index, the spawning time of manila clam in Gomso tidal flat is inferred to be between May and October. These results suggested that optimal harvests can be made before summer season when growth decreased and mass mortality occurred, after 24 months of seed shell release.
Keywords
Manila clam; Ruditapes philippinarum; Growth; Condition index; Gomso tidal flat;
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Times Cited By KSCI : 2  (Citation Analysis)
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