A STUDY ON THE EMBRYONIC AND LARVAL DEVELOPMENT OF Micropterus salmoides
Liu Wensheng;Lin Zhuokun ;Peng Ruiming(Dept.of Animal Sci.,South China Agr.Univ.,Guangzhou,510642)
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.
【CateGory Index】： Q954.4