| 区又君,勾效伟,廖锐,李加儿.2008.紫红笛鲷幼鱼对集群密度和投饵定额的摄食反应.动物学杂志,43(3):34-38. |
| 紫红笛鲷幼鱼对集群密度和投饵定额的摄食反应 |
| Effect of Stocking Density and Food Dose on the Feeding Response of Young Lutjanus argentimaculatus |
| 投稿时间：2007-09-06 修订日期：2008-03-01 |
| DOI： |
| 中文关键词: 紫红笛鲷 集群密度 投饵定额 摄食反应 |
| 英文关键词:Mangrove Red Snapper(Lutjanus argentimaculatus) Stocking density Feeding dose Feeding response |
| 基金项目:国家863项目(No.2006AA10A414);国家“十一五”科技支撑计划项目(No.2006BAD09A14);广东省科技计划项目(No.2004A20105002) |
|
| 摘要点击次数: 2097 |
| 全文下载次数: 2148 |
| 中文摘要: |
| 研究了紫红笛鲷(Lutjanus argentimaculatus)幼鱼在不同集群密度和投饵定额下的摄食反应。实验设7个不同的集群组(1、2、3、4、8、12、16尾/组),每个集群组又分成7个不同的投饵定额组(18.4×10-2、27.6×10-2、36.8×10-2、46.0×10-2、55.2×10-2、64.4×10-2、73.6×10-2g/组),通过测定摄食量观测幼鱼的摄食反应。在定额投饵的情况下,紫红笛鲷每尾幼鱼的一次平均摄食量随群体密度的增大呈先增加、超过一定密度后下降的趋势。1尾组与其他组差异极显著(P<0.01),其组平均一次摄食量最低。当集群密度不变时,紫红笛鲷幼鱼一次平均摄食量随投饵定额的增大而增加,然后减小。随着集群密度增大,不同密度群体的最大摄食量向投饵定额增加的方向移动;而随着投饵定额增加,不同定额组的最大摄食量相对集中在2～8尾的群体中。结果表明,集群密度、投饵定额以及两者的交互作用对紫红笛鲷幼鱼的一次摄食量有极显著影响,群居的互利性和竞争性作用效果明显。 |
| 英文摘要: |
| This paper dealt with the effect of stocking density and food dose on the feeding response of Mangrove Red Snapper Lutjanus argentimaculatus.Groups of young L.argentimaculatus were separately reared at seven different stocking densities(1,2,3,4,8,12 and 16 ind/troop)and each with seven food densities(18.4×10-2,27.6×10-2,36.8×10-2,46.0×10-2,55.2×10-2,64.4×10-2 and 73.6×10-2 g/troop).The results showed that under the condition of dosed feeding,feeding quantity per time each fish increased with the rise of the population,and then decreased when up to some stocking density,significant difference was found between 1 ind/troop and other troops(P<0.01),with the lowest troop mean value of one-time feeding amount;under the condition of same stocking density,average value of one time feeding increased with the rise of feeding dose,and then decreased.As the rise of stocking density,the maximal feeding quantity in different density troops increased with the rise of feeding dose;As the rise of feeding dose,the maximal feeding quantity in different doses troops occurred in groups of 2-8 ind/troop.Results above showed that stocking density,feeding dose and their reciprocal reaction had a significant effect on one-time feeding quantity of young L.argentimaculatus over the experimental period,showing the reciprocity of group inhabitancy and competitive effect are significant. |
| 附件 |
| 查看全文 查看/发表评论 下载PDF阅读器 |
|
|
|
