主要アサリ産地からの報告 : 有明海熊本県沿岸
スポンサーリンク
概要
- 論文の詳細を見る
There are many tidal flats in coastal areas of Ariake Sound, where a fishery for the clam Ruditapes philippinarum is well developed. However, a serious reduction in the clam catch has occurred in recent years, especially, in the coastal areas of Kumamoto, where the annual catch of 65, 732t in 1977 has decreased to 2, 000 t or less. Various causes for this decrease have been suggested, including environmental deterioration, regional topography, food habit of local people and predation. The clam populations in Kumamoto have two reproductive peaks, from spring to early summer and in autumn. However, in recent years, the populations have been maintained by recruits from the earlier of these seasonal peaks. Recently, the clam has come to be distributed higher in the tidal flats. In Kumamoto, this species of clam can reach commercial size within 1 year after settlement, and almost all individuals are fished during the period from spring to autumn of the next year. Predation, especially by the eagle rays, is another serious problem for maintenance of the clam population.
- 日本ベントス学会の論文
- 2002-06-27
著者
関連論文
- タイラギ外套腔内への底質の間隙水の浸入
- 有明海の浮泥がタイラギに及ぼす影響
- 2003年から2005年までの有明海におけるたいらぎ類の浮遊幼生および稚貝の分布
- 有明海奥部におけるタイラギ稚貝の分布と底質特性
- 有明海においてカゴ飼育されたサルボウの成長, 生残および摂餌状態
- リシケタイラギの外套腔内落下異物の排出に及ぼす水温の影響
- リシケタイラギの外套腔内落下異物の排出
- 主要アサリ産地からの報告 : 有明海熊本県沿岸
- 有明海におけるアサリ浮遊幼生の出現傾向と殻長組成
- タイラギ外套腔内への底質の間隙水の浸入