双台子河口刀鲚个体生殖力  

Individual Fecundity of Tapertail Anchovy Coilia nasus from Shuangtaizi Estuary

作　　者：霍堂斌[1] 郑文军[2] 李耕[2] 赵荣伟 代尚英 那文学 

机构地区：[1]中国水产科学研究院黑龙江水产研究所,农业部黑龙江流域渔业资源与环境重点野外科学观测试验站,黑龙江哈尔滨150070 [2]中国水产科学研究院营口增殖实验站,辽宁营口115004 [3]哈尔滨市水产技术推广站,黑龙江哈尔滨150076 [4]东北农业大学,黑龙江哈尔滨150040

出　　处：《水产学杂志》2016年第6期31-36,共6页Chinese Journal of Fisheries

基　　金：中国水产科学研究院基本科研业务费(2014C02XK01);大辽河口鲚属鱼类早期资源调查研究(2014C02XK01)

摘　　要：于2015年5~6月在辽河双台子河口水域采捕176尾性腺发育到Ⅳ期的刀鲚Coilia nasus雌鱼,测量其体长(L)、体质量(W)、净体质量(W_o)、性腺重(W_l)和卵径等生物学指标。取左侧鳃盖骨鉴定年龄,用重量法计数个体绝对生殖力(F),计算体长相对生殖力(F_L)和体重相对生殖力(F_w),用5种数学模型及多元逐步回归方程拟合个体生殖力与生物学指标的关系。结果显示:样本由4^+~6^+龄组成,个体绝对生殖力(F)17 968~116 935粒,平均44 995粒;体长相对生殖力(F_L)66~297粒/mm,平均为145粒/mm;体质量相对生殖力(F_w)192~710粒/g,平均为362粒/g。F和F_L与体长(L)、体质量(W)、净体质量(W_o)、性腺重(W_l)、成熟系数(GSI)和年龄呈极显著正相关,与肥满度(K)相关关系不显著。F_w仅与W_l、GSI极显著正相关,和其他指标的相关性不显著。多元逐步回归显示,F与W和W_l密切相关,相关式为:F=-15 623.878+1 158.377W_l+324.104W(n=176,R=0.851;DW=1.890,P<0.01);F_L与W_l和K密切相关,相关式为:F_L=-68.850+3.868W_l+302 687.076K(n=176,R=0.728;DW=1.743,P<0.01);F_w均与L和GSI密切相关,相关式为:F_w=207.215-5.17L+7.5918GSI(n=176,R=0.646;DW=1.849,P<0.01)。第Ⅳ~Ⅴ期刀鲚卵巢中,卵径变化范围在0.55~1.05mm之间,平均0.81mm。依据卵径频率分布推测,刀鲚属单峰一次性产卵鱼类。Biological parameters including body length （L）, body weight （IV）, net body weight （IVo） and ovary weight （IV1） were measured 176 individuals of females tapertail anchovy Coilia nas us with stage IV ovary collected from the Shuangtaizi estuary in Liao River from May to June in 2015. The left opercula bone was used to estimate age, egg diameter and account were measured by a caliper, and the individual absolute fecundity （F）, relative fecundity to body length （FL） and relative fecundity to body weight （FW） were calculated by gravimetric method to evaluate the relationship between individual fecundity and the biological indicators by five kinds of mathematical model and stepwise regression. The results showed that the individual absolute fecundity （F） was varied from 17 968 eggs to 116 935 with an average of 44 995 eggs, the individual relative fecundity per millimeter （FL） ranged from 66 to 297 eggs with an average of 145 eggs per millimeter and the individual relative fecundity per gram （FW） from 192 to 710 eggs with an average of 362 eggs per gram age in all samples of the fish from 4＋ to 6＋ years old. The relationship between individual absolute fecundity （F） and relative fecundity to body length （FL） was significantly positive to body length （L）, body weight （ W ）, net body weight （Wo）,ovary weight （W1）, Gonado-Somatic Index （GS/）, age, excepting for condition factor （K）. While the relationship between Fw was only significantly positive correlated with W1 and GSI, but not correlated with other morphometrical indicators. The stepwise multi-regressive analysis revealed that the relationship between F and W, and W1 was significantly correlated, with the regression equation of F=-15623.878＋1158.377Wt＋324.104W （n=176, R=0.851; DW=1.890, P〈0.01 ）. The significant regression equation between FL with WI and K, was expressed as FL=-68.850＋3.868WL＋302687.076K （n=176, R=0.728; DW=1.743, P〈0.01 ）; the significant regression e-

关 键 词：刀鲚 个体生殖力 双台子河口 

分 类 号：Q492[生物学—生理学]