Studies on the artificial propagation of Monopterus albus (Zuiew)

摘要

AbstractArtificial propagation ofMonopterus albus(Zuiew) was conducted during their spawning season in the present study. Different doses of luteinizing‐hormone‐releasing‐hormone analogue (LHRH‐A) were tested for inducing the ovulation of brood females. No significant difference was found in the degree‐hours and fertilization rates between three different doses (0.1, 0.2 and 0.3 μg LHRH‐A g‐1fish). A fertilization solution of 0.3 NaCl produced significantly higher fertilization rates than the other three solutions (0.5 NaCl, 0.65 NaCl and water). Fertilization times ranging from 5 to 2 0 min gave no significant difference in the fertilization rates. The embryonic and larval development ofM. albuswas observed and illustrated. The hatching time of eggs ofM. albuswas about 140 h in the 28‐3 0oC water temperature range. UsingTubifexspp. for the first food for the larval nursery gave higher growth rate than two other foods, zooplankton and