摄食对锯缘青蟹溞状幼体生长和呼吸的影响

本文采用实验室和现场测定相结合的方法，研究了锯缘青蟹溞状幼体摄食率、摄食和饥饿对幼体生长发育蜕皮以及呼吸的影响.实验结果表明锯缘青蟹第一期溞状幼体(Z

Effects of feeding on growth and respiration of Scylla serrata zoea

The daily feeding rate of Scylla serrata zoea 1(Z1 ), and the effect of feeding and starvation on growth and respiration of larvae were studied . The results showed that: the daily feeding rate of Z1 is increasing with the rise of the density of rotifer( Brachionus plicatilis), but it has no obvious relation to the development phase. Z1 feeding habit belongs to passive feeding. According to energy conversion efficiency , the proper rotifer density should be about 30～ 40ind/cm3 during 0～1d of Z1, and it will be beyond 40ind/cm3 two days later . The relationship between dry weight or energy content of larvae and development time can be represented by exponential equation (R = 329.55DW-1.090, r2 = 0.965, n = 4). Oxygen consumption rate is decreasing with development of larvae and relations with DW follows power function, but it is increasing with feeding and specific dynamic action( SDA ) of Z1 is about 10.1% of daily ingested energy. Energy lost by environmental stress will be compensated in this or in subsequent stage through delaying developmental period at the range of ＜PNR (Point of no return) and＞PRS (Point of reserve saturation).