The complete larval development of Chionoecetes japonicus under laboratory conditions
K. Konishi, T. Matsumoto, and R. Tsujimoto
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Complete larval development of the red snow crab, Chionoecetes japonicus Rathbun, from hatching to crab 1 stage, was observed under laboratory conditions for the first time. The newly hatched zoeae were reared in artificial seawater with a salinity of 35% and under light conditions of 10 light hours and 14 dark hours. The larvae were fed with decapsulated eggs and newly hatched nauplii of Artemia. Green microalgae, Dunaliella teriolecta, 100-500 cells per ml, were also added to cultures. Combinations of three kinds of antibiotics (chloramphenicol, 5 mg per liter; strep-tomycin, 50 mg per liter; and ampicilin, 50 mg per liter) were used for preventing bacterial infections. The crab 1 stage was obtained 118 days after hatching at 8.5-11.0ºC. The crab 1 of C. japonicus is different from the congener C. opilio (Fabricius) in carapace morphology and live color.
- Item number: AK-SG-02-01l
- Year: 2002
- DOI: https://doi.org/10.4027/ccwrbme.2002.12