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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.
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