摘要
为研究条石鲷在早期发育阶段的生长特性和重要功能器官的异速生长规律,测定了条石鲷仔稚幼鱼（0~50日龄）全长和体质量随日龄的生长变化。通过统计学方法分析发现,全长、体质量随日龄的变化均符合Cubic函数关系式,其变化曲线呈S型。全长、体质量随日龄的变化可分为3个阶段,不同阶段的全长、体质量生长率具有显著性差异（P〈0.05）。运用SPSS 13.0和OriginPro 7.5软件分析了条石鲷仔稚幼鱼头长、头高、体高、眼径、口裂、吻长、腹长、尾鳍长等外部形态参数与全长的变化关系,发现各功能器官的生长均呈现出异速生长的特点,但生长的拐点却各不相同。研究表明,在条石鲷的早期发育过程中,有关运动、摄食、消化等的重要器官（眼、口、腹部、尾鳍等）具有优先发育的特征,且发育的时段各有差异,故在其苗种的培育过程中,应根据其生长、生态规律为其创造最佳的环境条件,以提高苗种的存活率。
The rock bream, Oplegnathus fasciatus, a subtropical and carnivorous species, is an economi- cally important marine fish in East Asia. The high commercial and ornamental value makes it a promising aquaculture species in the future. However, to some extent, the lack of information on ontogenetic devel- opment has restricted the breeding industry of this species. In this study, the allometric growth in rock bream was analyzed. The results are as follows： at the general condition for fingerling-production, the total length and body weight of rock bream larvae were measured from hatching to 50 days post hatching. The increase of total length and body weight could be estimated with the Cubic function and took on the S-Curve. The curve could be divided into three phases and each phase possessed different growth rate. The head length, head height, trunk height, eye diameter, mouth width, rostrum length, abdomen length, and tail fin length of rock bream were measured and the relationship between them and the total length was analyzed. The result showed the allometric growth in rock bream larvae. By analyzing the inflexion points in growth curves, in combination with morphological development of the larvae, we found that some im- portant organs （head, mouth, eye, digestive tract and fins） had developed prior to other ones. In rearing rock bream larvae, the best environmental condition should be established by making the important organs prior development.
出处
《水产学报》
CAS
CSCD
北大核心
2012年第8期1242-1248,共7页
Journal of Fisheries of China
基金
西南大学博士基金项目(SWU111049)
中国科学院创新性前沿项目(KSCX2-YW-N-47-08)
国家农业科技成果转化资金项目(05EFN2166000453)
靑岛市科技发展计划项目(05-1-HY-79)
关键词
条石鲷
早期发育
功能器官
异速生长
Oplegnathusfasciatus
larvae development
functional organs
allometry
