摘要
根据１９９３年５～９月的调查材料，研究了福建闽江口海域海蜇的渔业生态学．其密度和生物量高峰分别出现在６月２０日和７月１０日；群体伞径范围为１８～５４６ｍｍ，平均３２８．８ｍｍ．体重范围为０．５～９５４０ｇ，平均２８７７．４ｇ；伞径为３４５～４８５ｍｍ的雌性有性繁殖力在１１２０．６×１０４～３７５４．８×１０４粒，平均２４４４．７×１０４粒，有性生殖期在８月初至１１月；采用高次方程和指数高次方程分别模拟伞径和体重生长，生长方程为：Φｔ＝１２．１３３７＋１７．７０４８ｔ＋３．１３８５ｔ２－０．２０４９ｔ３＋０．００３０２ｔ４，ｌｏｇｅＷｔ＝－０．５７４９＋１．４８１８ｔ－０．０７７１ｔ２＋０．００１２９ｔ３；以生物经济学原理确定７月２０日为合理开捕期，开捕伞径为４６５．８ｍｍ．讨论分析了执行合理开捕期和开捕规格，对保护和合理利用海蜇资源。
The fishery
ecology of jellyfish at Minjiang River estuary was studied from May to September 1993. The
peaks of density and biomass of the jellyfish appeared in June 20 and July 10, respectively.
The diameter of the umbrella part ranged from 18 mm to 546 mm, averaging 328.8mm. The
body weight ranged from 0.5g to 9540g, averaging 2877.4 g. The sexual reproduction
capability of individuals with the diameter of umbrella part ranged 345～485mm was 1120.6×
10 4～3754.8×10 4 eggs, averaging 2444.7×10 4 eggs, and the period of sexual
reproduction continued from the beginning of August to November. The diameter growth of the
umbrella part and the body weight of the jellyfish could be calculated respectively by the power
equation and power exponential equation: Φ t=12.1337+ 17.7048t + 3.1385 t 2-0.2049t
3+0.00302t 4, log eW t=-0.5749+1.4818t-0.0771t 2+0.00129t 3 . From the standpoint of
biology and economics, the optimum date for starting fishing may be in July 20, with the
optimum diameter of the umbrella part by 465.8mm. The optimum date and size of actual
beginning fishing were also discussed, which would be important for the conservation and
exploitation of the resources of jellyfish, and for the increasing economic effect.
出处
《应用生态学报》
CAS
CSCD
1999年第3期341-344,共4页
Chinese Journal of Applied Ecology
基金
福建省科研基金
关键词
海蜇
生态分布
生长
有性繁殖
闽江口海区
Jellyfish, Ecological distribution, Growth, Sexual reproduction, Minjiang River estuary.
