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KMID : 1024520090180101163
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Journal of the Environmental Sciences
2009 Volume.18 No. 10 p.1163 ~ p.1170
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Analysis of Population Distribution on Stocking Area of Sandy Beach Clam, Gomphina melanaegis
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Lee Chu
Lee Chae-Sung
Kim Su-Kyoung
Kim Wan-Ki
Jo Q-Tae
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Abstract
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The clam, Gomphina melanaegis, which is commonly called the sandy beach clam because of its habitat,
is a valuable organism in the sandy coast of East Sea, Korea. It is frequently observed in large populations
between 0.5 and 5 meters. We have released 50,000 seedling, ranging from the diameter of approximately
3 mm, 2007, and 1,000,000 seedling, ranging from the diameter of approximately 0.2 mm, plus 100,000 adult
individuals, ranging from the shell length of approximately 20～40 mm, 2008 at Jinha beach. The spawning
period of G. melanaegis, was from June to August, and the main spawning occurred in July. This investigation
was carried out to elucidate population distribution on the stocking area of sandy beach clam, G. melanaegis.
The relationship between shell length and ring radius in each ring was investigated as a regression line. The
relationship between the shell length and shell height of released young clam was SH=1.0105SL-4.7764
(R2=0.7905). The relationship between the shell length and total weight of released young clam was
TW=0.0013SL2.3966(R2=0.71). It draws a deduction that the ring of this clam was produced once a year during
the duration between June and August.
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KEYWORD
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Sandy beach clam, Population distribution, Stocking area, Gomphina melanaegis
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