中华假磷虾生长率的实验研究

The Experimental Studies on Growth Rate of Pseudeuphausia sinica

中华假磷虾体干重与体长呈正指数相关：ＤＷ＝３．０９（ＢＬ）￣（２．４６），但室内养成的成体比海捕的相同体长的体重更大。ＢＬ＝２．０６＋５．６６ＡＬ。蜕皮间期与水温呈线性负相关：Ｐ＝１４．８２＋０．５１Ｔ。自Ｆ＿２开始培养的假磷虾可蜕皮２７～３４次，海捕的抱卵雌虾，卵孵化后仍可蜕皮，即同时存在生殖生长与体质生长。瞬时生长率随发育而快速下降。蜕皮重占蜕皮前动物重的３．２６％。这在生物能学估算中具有重要意义。

A power function,DW = 3. 09 (BL)￣(2.46),is established between the body dryweight (DW) & the body length(BL) in P. sinica collectd from Xiamen waters. The different func-tion is found in adults reared from the furcilia in laboratory. The reared individuals are heavier thanones collected from the field with the same body length. The results also show a linear relationship , BL= 2. 06+ 5. 66 AL , between the body length (BL) & the length of the 6￣(th) abdominal segment(AL).The intermoult period is not dependent of the developmental stages, but has a nesative linase correla-tion with the rearing temperature. The females with egg sac collected from sea could moult after egg-laying, indicating the co-occurrence of the repreductive & somatic growth. The instantaneous growthrates decrease remarkably with developing into adult, depending on temperature.