New Zealand Journal of Marine and Freshwater Research abstracts

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New tank design for larval culture of Japanese spiny lobster, Panulirus japonicus

Hirokazu Matsuda
Taisuke Takenouchi

Fisheries Research Division
Mie Prefectural Science and Technology
Promotion Center 3564-3
Hamajima, Shima
Mie 517-0404, Japan
email: matsuh07@pref.mie.jp

Abstract  Middle-stage phyllosoma of Panulirus japonicus (mean body length 11.5 mm) were cultured using 40-litre elliptical tanks with concave bottoms (85 cm long x 60 cm wide x 15 cm deep) in a flow-through system (24-25°C). The phyllosoma were fed with Artemia and mussel gonad. Survival rates to the puerulus stage were 54 ± 1%, 51 ± 0%, and 37 ± 9% at densities of 40, 60, and 90 phyllosoma/tank, respectively. The densities did not significantly affect the growth of phyllosoma. Major causes of phyllosoma mortality included moulting complications, bacterial disease, and cannibalism. The survival rates were significantly higher than in our previous studies, indicating that the new elliptical tank design may be suitable for mass culturing of phyllosoma. The survival of puerulus to the first juvenile stage was 83 ± 7% and did not differ between densities during phyllosoma rearing.

Keywords  Panulirus japonicus; phyllosoma culture; culture tank; density; survival; growth

M04017; Online publication date 31 May 2005 Received 8 February 2004; accepted 21 September 2004
New Zealand Journal of Marine and Freshwater Research, 2005, Vol. 39: 279-285
0028-8330/05/3902-0279 © The Royal Society of New Zealand 2005

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