| 摘要: |
| 利用秋末至次年夏初福建省海区自然水温一般处于大菱鲆 (Scophthalmus maximus)生长最适水温范围这一条件,采用陆上工厂化养殖和海上网箱养殖二种方式,试验其养殖效果。利用海上网箱养殖方 式,可以在秋末夏初自然水温处于大菱鲆最适生长范围期间,将大菱鲆鱼苗饲养至平均体质量500g/尾的商品规格。从2003年11月26日至2004年4 月2日,鱼苗从平均全长11.3cm、平均体质量113.6g生长至平均全长27.1cm、平均体质量500.4g,成活率86.7%。而同一阶段,陆上 水泥池的水温一般要比自然海区低1～2℃,生长速度也较慢。另外,大菱鲆对高水温有相当的耐受能力,在平均水温达27.0℃、最低25.2℃、最高达 29.2℃的6月份,成活率仍可达85.9%。结果表明,在南方开展大菱鲆阶段性养殖在技术上是可行的。 |
| 关键词: 大菱鲆(Scophthalmus maximus) 南方 移养 技术 |
| DOI： |
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| 基金项目:福建省农科教项目 |
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| The techniques of cultivating turbot (Scophthalmus maximus) in southern China |
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| Abstract: |
| In this experiment, during late autumn to the beginning summer of next year, with water temperatures of the Fujian waters similar to coldwater species turbot’s(Scophthalmus maximus) optimal growth range, turbot was transplanted to the Fujian sea area, southern China for farming. There were two types of culture modes including land-based commercial farming and cage culture in the sea. During the experimental period, the temperatures of seawater were 1 or 2 ℃ lower in land-based cement tanks than in the sea, but the fish grew faster in cages. From Nov. 26, 2003 to Apr. 2, 2004, turbot juveniles were raised to 27.1 cm total lengty (TL) and 500.4 g body mass(BM) from 11.3 cm TL and 113.6 g BM on the average, with survival of 86.7% respectively. In addition, turbot showed tolerance to high water temperatures, 85.9% of cultured fish still survived even exposed to the average water temperature of 27.0℃ in June (lowest temperature 25.2℃ and highest 29.2℃). Hence, the results indicated that farming turbot for certain periods in Fujian was technically feasible. |
| Key words: turbot(Scophthalmus maximus) southern cultivating technique |
