摘要
光照对黄盖鲽仔鱼的生长、发育及摄食有显著影响,各组仔鱼的体长与体高在20日龄时均产生了极显著的差异;Duncan多范围检验表明:40~60lx光照度下仔鱼生长最好;在40~7000lx范围内随光照度的增强,生长则变差,存活率下降,畸形个体增加。黑暗条件下及3~6lx条件下的仔鱼在12日龄时全部因饥饿而死亡。在卵黄囊期的各组仔鱼不受外界环境影响,生长情况近似。40~7000lx光照度之间的5组在4日龄至20日龄之间体长与日龄表现为直线关系,体高与日龄表现为指数函数关系。仔鱼的摄食强度(10:00~14:00)在40~7000lx范围内随光照度增强而减弱。18:00~22:00时区之间如给以适当光照,则仔鱼亦会有相当的摄食强度。
This paper deals with the effects of different light intensity on the growth,
development and feeding of larval Limanda yokohamae . The results are as follows:Light has
important influence on the growth, development and feeding of larval Limanda yokohamae .
The body length and height of every group of larvae on the twenieth day all shows fair evident
difference. Duncan New Multiple Range Test shows: Under the light intensity ranging from 40 to
60 lx, the growth and development of larvae are the best. Within the light intensity of 40 to 7000
lx, the stronger the light intensity is, the worse the growth is, the lower the survival rate is, the
more the abnormal larvae are. The larvae under complete darkness and under the light
intensity of 3 to 6 lx are all dead on the 12th day because of starvation. In the yolksac stage,
the growth of every group of larvae is not influenced by the external environment and is similar
to all. From the 4th to 20th day, the growth of body length of 5 groups of larvae under 40 to
7000 lx show straight line relation to age, and the growth of body height shows exponential
function relation to age. From 40 lx to 7000 lx, the feeding intensity(10:00-14:00) of larvae is
discreased with the increase of light intensity. If the appropriate light intensity is given between
18:00 and 22:00 , the larvae can also have fair feeding intensity. The suitable light intensity for
larvae before the 20th day is 40-600 lx.
出处
《水产学报》
CAS
CSCD
北大核心
1999年第1期6-12,共7页
Journal of Fisheries of China
基金
国家自然科学基金
关键词
黄盖鲽
仔鱼
光照
生长
发育
育苗
Limanda yokohamae, Larvae, Light, Growth,
Development, Feeding