辽东湾海蜇生长的研究

本文描述了辽东湾海蜇(Rhopilema esculenta Kishinouye)的生长特征。它与鱼虾类的生长特征不同，没有渐近值，到9月10日后个体收缩。我们用高次方程描绘了辽东湾海蜇的一般生长型。根据海蜇的一般生长型，研究了海蜇的生长速度。

GROWTH PATTERN AND CHARACTERISTICS OF EDIBLE JELLYFISH (RHUPILAEMA ESCILENTA) IN LIAUDUNG BAY

The growth characteristics of jellyfish (Rhopilema esculenta)whichhabitats in Liaodong Bay was studied and discussed. The results obtained with regre-ssion method are as follows: 1) The relationship between the arch length of the individuals of jellyfish(L_t)and their total weight (W_t) may be described with an equation as W_t=0.3932L_t~(2.4) 2) The relationship between the arch length and the diameter of the jellyfish(D_t) is linear and the regression is D_t=0.57+0.49L_t 3) The relationship between the weight of the umbrella-part of individuals ofjellyfish (W_s) and their total weight is linear, too. The equation is W_t=1.7743W_8-1775 4) The common growth pattern of jellyfish is different from that of fishes andshrimps. Since the growth of jellyfish shrink after the first ten-day period of Septem-ber without asymptotic values, it is impossible to show the growth pattern of jelly-fish by means of regular asymptotic growth equation. Its growth pattern may be des- cribed with a polynomial expression as a function of time, viz., L_t=0.2198+0.4146+0.2203t~2+0.03824t~3-0.002249t~4in which, t and L_t designate respectively the time and arch length of jellyfish, andthe time unit is five-day. On this basis, the growth rate and growth pattern as afunction of time is discussed.