湛江红树林区地埋管网系统中华乌塘鳢保育研究  

Study on conservation of Bostrychus sinensis in buried pipe system of mangrove area in Zhanjiang

作　　者：粟文[1] 韩维栋[1] 谢恩义[1] 王惠 许日升 SU Wen;HAN Weidong;XIE Enyi;WANG Hui;XU Risheng(Guangdong Ocean University,Zhanjiang 524088,Chin)

机构地区：[1]广东海洋大学,广东湛江524088

出　　处：《南方水产科学》2018年第4期66-71,共6页South China Fisheries Science

基　　金：海洋公益性行业科研专项"基于地埋管网技术的受损红树林生态保育研究及示范"(201505028-6)

摘　　要：研究了湛江半日潮红树林区地埋管网系统中3种保育密度对中华乌塘鳢(Bostrychus sinensis)生长及生理生化指标的影响。中华乌塘鳢初始体质量为(45.39±2.36)g,体长为(12.51±0.35)cm,保育密度为A组4.3 kg·m^(-3)、B组5.0 kg·m^(-3)、C组5.7 kg·m^(-3),设置3个重复,保育周期80 d。结果表明,养殖终末各密度组的成活率在94.9%以上;各密度组间终末体长、特定生长率、体长增长率、肥满度、平均日增重以及增重率差异不显著(P>0.05);但A组终末体质量显著高于C组(P<0.05);C组饵料转化率显著高于A组(P<0.05)。各密度组间终末体长变异系数无显著差异(P>0.05),随着保育密度的增加各密度组间终末体质量变异系数升高,A组显著低于B组、C组(P<0.05)。A组超氧化物歧化酶(SOD)及溶菌酶(LZM)活性显著高于C组(P<0.05),A组丙二醛(MDA)含量显著低于B组、C组(P<0.05)。We investigated the effects of three stocking densities on the growth, and physiological and biochemical indices of Bostrychus sinensis in the buried pipe system of the semi-diurnal tidal mangrove area in Zhanjiang. The fingerlings of B.sinensis with initial body mass of （45.39±2.36） g and body length of （12.51± 0.35） cm were reared at three stocking densities [Group A （4.3 kg·m^-3）, Group B （5.0 kg·m^-3）, Group C （5.7 kg·m^-3）], each with three replicates in the system for 80 d. The results show that the survival rates were above 94.9% at all three stocking densities in the end, and the differences in the final body length, specific growth rate, growth rate, fatness, average daily gain and weight gain rates among the groups were not significant （P〉0.05）, but the average body mass of Group A was higher than that of Group C in the end （P〈0.05）. The rate of feed conversion in Group C was significantly higher than that in Group A （P〈0.05）. There was no significant difference in the coefficient of variation of body length among different groups in the end （P〉0.05）, but the coefficients of variation of the final body mass among all groups increased with the increase of stocking density, while that in Group A was significantly lower than that in Group B and C （P〈0.05）. The activities of SOD and lysozyme of Group A were significantly higher than those in Group C （P〈0.05）, while MDA content in Group A was significantly lower than those in Group B and Group C （P〈0.05）.

关 键 词：中华乌塘鳢 地埋管网系统 保育密度 生理生化指标 湛江红树林区 

分 类 号：S967.5[农业科学—水产养殖]