《厦门大学学报（自然科学版）》

采用挂牌、金属线码和切腹鳍3种标志方法对大规格(平均体长(10.3±0.6)cm)和小规格(平均体长(6.8±0.5)cm)的日本黄姑鱼(Nibea japonica)进行标志实验.14 d室内暂养实验结果表明:3种标志方法对日本黄姑鱼平均成活率影响不大; 而挂牌标志组标志成功率显著低于其他各组(p<0.05),且其中大规格组标志成功率显著高于小规格组(p<0.05).除肝体比外,标志鱼的主要生长指标受标志方法影响均极显著(p<0.01); 饵料转换效率和脏体比受标志鱼体规格影响极显著(p<0.01); 标志方法和鱼体规格的交互作用对脏体比影响显著(p<0.05),对饵料转换效率和肝体比影响极显著(p<0.01).3种标志方法中挂牌标志组的多项生长指标与对照组差异显著(p<0.05),金属线码标志组的饵料转换效率和切腹鳍标志组的脏体比与对照组差异显著(p<0.05),其他生长指标无显著差异.综合分析得出:切腹鳍可用于短期标志,金属线码标志对鱼体生长影响较小,当日本黄姑鱼体长大于10.0 cm时可采用挂牌标志法以提高标志鱼回捕率.

The tagging experiments were conducted on large(average length of(10.3±0.6)cm)and small(average length of(6.8±0.5)cm)Nibea japonica with three fish-tagging methods,i.e.H-bar tagging,coded wire tagging,and ventral sundering tagging.After a fortnight temporary rearing experiment,the result was as follows:all the three fish-tagging made no significant difference on the survival rate,and the success rate of tagging large group was evidently higher than that of tagging small group(p<0.05),but the success rate of H-bar tagging group was significantly lower than that of the other two groups(p<0.05).In addition to the liver to body weight ratio,different tagging methods significantly affected tagged fishes' primary growth indexes(p<0.01).Likewise,the forage conversion efficiency and the organ to body weight ratio were extremely influenced by the size of N. japonica(p<0.01).The interaction between these two factors significantly affected the organ to body ratio(p<0.05),and extremely influenced the forage conversion efficiency and the liver to body weight ratio(p<0.01).Compared to the control group,the H-bar tagging group showed significant differences in various growth indexes(p<0.05),while the coded wire tagging group and ventral sundering tagging group only showed significant differences in the forage conversion efficiency and the organ to body weight ratio(p<0.05),respectively.Accordingly,it is recommended that the ventral sundering tagging method is applicable for a short time tagging,and the coded wire tagging method has small effect on the growth of fish.As for N. japonica,when the body length is greater than 10.0 cm,it is suggested to adopt the H-bar tagging method in order to increase the recapturing rate.

引言
1 材料与方法
2 结果与分析
3 讨论
4 结论

图1 3种标志方法示意图<br/>Fig.1 Demonstration of three tagging methods

图1 3种标志方法示意图
Fig.1 Demonstration of three tagging methods

表1 不同标志组日本黄姑鱼的成活率和标志成功率<br/>Tab.1 Survival rates and successful tagging rates of N. japonica in different tagging groups

表1 不同标志组日本黄姑鱼的成活率和标志成功率
Tab.1 Survival rates and successful tagging rates of N. japonica in different tagging groups

图2 不同标志组日本黄姑鱼终末体长与初始体长的相关性<br/>Fig.2 Correlation of final and initial body lengths of N. japonica in different tagging groups

图2 不同标志组日本黄姑鱼终末体长与初始体长的相关性
Fig.2 Correlation of final and initial body lengths of N. japonica in different tagging groups

表2 不同标志组日本黄姑鱼的理论终末体长<br/>Tab.2 Theoretical final body lengths of N. japonica in different tagging groups

表2 不同标志组日本黄姑鱼的理论终末体长
Tab.2 Theoretical final body lengths of N. japonica in different tagging groups

表3 不同标志组日本黄姑鱼的生长指标差异<br/>Tab.3 Differences of growth indexes of N. japonica in different tagging groups

表3 不同标志组日本黄姑鱼的生长指标差异
Tab.3 Differences of growth indexes of N. japonica in different tagging groups

表4 不同生长指标与标志方法、鱼体规格的相关性分析<br/>Tab.4 Correlation analyses of different growth indexes with tagging methods and body sizes

表4 不同生长指标与标志方法、鱼体规格的相关性分析
Tab.4 Correlation analyses of different growth indexes with tagging methods and body sizes

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备注

引言

1 材料与方法

2 结果与分析

3 讨论

4 结论

学报简介

备注

引言

1 材料与方法

2 结果与分析

3 讨 论

4 结 论

学报简介

3 讨论

4 结论