Mass culture of fairy shrimp Streptocephalus proboscideus (Crustacea – Anostraca) and its use in larviculture of the Persian sturgeon, Acipenser persicus |
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Authors: | Imanpour Namin J Uma Arshad & Zohreh Ramezanpoor |
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Institution: | Department of Fishery, Faculty of Natural Resources, the University of Guilan, Sowmehsara, Iran; International Sturgeon Research Institute, Rasht, Iran |
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Abstract: | This study was conducted with cysts of Streptocephalus proboscideus obtained from the University of Gent‐Belgium. The cysts were hatched in Environmental Protection Agency (EPA) medium. The nauplii were reared at the Sturgeon Research Institute using a pure culture of Scenedesmus obliquus alga supplied at a density of 5 × 103 cell mL?1 that gradually increased to 1 × 104, 5 × 104 and 1 × 105 cell mL?1 with the growth of the nauplii. The nauplii attained sexual maturity and started producing cysts in 8 days and yielded a mean cyst number of 220±40 female?1 brood?1 cysts. These cysts were used in the larviculture of Persian sturgeon, Acipenser persicus (Borodin). Forty‐three larvae of Persian sturgeon (mean weight: 15.4±1.1 mg; mean length: 27.1±2.7 mm) with roughly absorbed yolk sacs were stocked in three aquaria and fed S. proboscideus nauplii at 8‐h intervals. By the end of the experiment (day 5), the mean weight and length of Persian sturgeon larvae were 51.4±13.3 mg and 20.7±1.4 mm respectively. |
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Keywords: | Streptocephalus proboscideus Acipenser persicus algal culture feeding larviculture |
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