Breeding and larval rearing of the rabbitfish, Siganus guttatus (Bloch)
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1985ผู้เขียน
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นามธรรม
Females of Siganus guttatus reared to sexual maturity in canvas tanks were induced to spawn by using human chorionic gonadotropin (HCG, Ayerst) at 500 IU/fish or about 2 IU/g body weight. The amount of HCG used depended on the initial mean egg diameter; the smaller the diameter, the more HCG was used. Fish with oocytes characterized by germinal vesicle migration (mean egg diameter ≥ 0.47 mm) spawned without HCG injection. Fertilization and hatching rates for both treated and untreated fish were more than 90%. The larvae were reared to metamorphosis using rotifers from day 2–17, rotifers + newly hatched Artemia nauplii from day 18–20 and rotifers + newly hatched Artemia nauplii + artificial feed from day 21–35. In addition, Isochrysis galbana was introduced to the rearing tanks from day 1–10 and Chlorella sp. and/or Tetraselmis sp. from day 1–35. Survival rates of larvae tended to be lower as the broodstock became older.
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Contribution No. 151 of the Aquaculture Department, SEAFDEC.
การอ้างอิง
Juario, J. V., Duray, M. N., Duray, V. M., Nacario, J. F., & Almendras, J. M. E. (1985). Breeding and larval rearing of the rabbitfish, Siganus guttatus (Bloch). Aquaculture , 44(2), 91-101. https://doi.org/10.1016/0044-8486(85)90012-2
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