摘要
加州鲈鱼受精卵呈圆球形，橙黄色，具粘性，在水温１７．４℃～２０．４℃时，胚胎发育历时６８ｈ５ｍｉｎ，孵化总时数与水温成反比，孵化有效积温与平均水温成反比，而与孵化总时数成正比。孵出的仔鱼体全长为３．８～４．２ｍｍ，半透明，３２对体节，孵出后６ｄ开始觅食，１１ｄ卵黄囊和油球消失，２５ｄ稚鱼体全长达１６～１８ｍｍ。
The fertilized egg of Micropterus salmoides is sticky,orange in colour and sphericalin shape measuring 1.3～1.5 mm in diameter.Under the water temperature of17.4～20.4℃,it took 68 hours and 5 minutes to complete embryonic development.The hours for incubation show a negative correlation to the water temperature.The effective accumulated temperature is negatively correlated to the average watertemperature too,but positively correlated to the hours for incubation. Newly hatchedlarvae attained a total length of 3.8～4.2 mm with 32 myotomes,is transparent.Thelarvae began to feed 6 days after hatching.Its yolk and oil globule were entirelyconsumed at day 11.By day 25,the juveniles attained 16～18 mm in total length.
出处
《华南农业大学学报》
CAS
CSCD
1995年第2期5-11,共7页
Journal of South China Agricultural University
关键词
加州鲈鱼
胚胎发育
幼鱼发育
Micropterus salmoides
embryonic development
larval development
