Evaluation of different live food organisms on growth and survival of river catfish, Mystus nemurus (C&V) larvae
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Mystus nemurus is one of the most commercially important freshwater fish in Malaysia. Even though artificial breeding or reproduction of M. nemurus is done in private hatcheries around Peninsular Malaysia, inadequate seed supply coupled with relatively high fingerling prices limits its production. Presently, the supply of fingerlings cannot satisfy the demand for fish farming due to some constraints on the larval rearing, so larval rearing of M. nemurus has yet to be improved in terms of nutrition requirement and suitable size of food for the larvae. At present, the conventional method of fish larviculture using live food such as Artemia nauplii is being practiced by most Malaysian catfish hatchery operators. Using expensive live food like Artemia has made the mass production of catfish fry/fingerlings less profitable. Alternative measures are necessary in order to help minimize importation and use of Artemia. Indigenous species of live food organisms, which are great potential as feed and can easily be cultured and mass-produced at low cost, may be used as substitutes. Studies on those live foods are lacking, hence this study was conducted to determine the effect of different live foods on growth and survival of Mystus nemurus larvae.
Laron, M. A., Kamarudin, M. S., Yusoff, F. M., & Saad, C. R. (2001). Evaluation of different live food organisms on growth and survival of river catfish, Mystus nemurus (C&V) larvae. In C. I. Henry, G. Van Stappen, M. Wille, & P. Sorgeloos (Eds.), Larvi 2001 : 3rd Fish & Shellfish Larviculture Symposium, Gent, Belgium, September 3-6, 2001 (EAS Special Publication No. 30) (pp. 299-302). Oostende, Belgium: European Aquaculture Society.
PublisherEuropean Aquaculture Society
SeriesSpecial Publication No. 30
- Conference Proceedings 
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Status of the Mekong giant catfish, Pangasianodon gigas Chevey, 1930 stock enhancement program in Thailand N Sukumasavin - In JH Primavera, ET Quinitio & MR Eguia (Eds.), Proceedings of the Regional Technical Consultation on Stock Enhancement for Threatened Species of International Concern, Iloilo City, Philippines, 13-15 July 2005, 2006 - Aquaculture Department, Southeast Asian Fisheries Development CenterThe Mekong giant catfish (Pangasianodon gigas Chevey, 1930) is one of the largest freshwater fish in the world, measuring up to 3 m in length and weighing in excess of 300 kg. It is endemic to the Mekong River Basin area. It is found in Tonle Sap Lake, Tonle Sap River, and the Mekong River. It is not known to occur in the upper 2,000 km of the Mekong River. The current extent of occurrence is estimated at around 4,150 km. Historical reports indicate that the species was abundant in the early 1900s with 40-50 fish caught yearly in Nong Khai Province, north-east Thailand. However, since that time the number of fish caught has declined. This paper discusses several important information about Mekong Giant Catfish, such as rarity and size, natural food, natural spawning season and spawning grounds, and age and size at first maturity. Moreover, the breeding program and the stock enhancement activities of the Thai Department of Fisheries were also presented in the paper.
BrochureAnon. - 1999 - Aquaculture Department, Southeast Asian Fisheries Development CenterDescribes SEAFDEC/AQD's work on artificially propagating the catfish.
Conference paperJD Tan-Fermin, RSJ Gapasin, AM Tan, MA Garcia & AC Emata - In CL Marte, GF Quinitio & AC Emata (Eds.), Proceedings of the Seminar-Workshop on Breeding and Seed Production of Cultured Finfishes in the Philippines, Tigbauan, Iloilo, Philippines, 4-5 May 1993, 1996 - Aquaculture Department, Southeast Asian Fisheries Development CenterClarias macrocephalus is endemic yet dwindling freshwater foodfish in the Philippines. Induced breeding protocol was developed by monitoring the size and maturation of eggs at 0-48 h after a simultaneous injection of luteinizing hormone-releasing hormone analogue (LHRHa; 0.0005 - 0.10 µg/g BW) and pimozide (PIM; 1 µg/g BW). Based on its similar osmotic pressure with catfish plasma, eggs were fixed in 1% phosphate-buffered formalin. Mean egg diameter of fish that were induced to mature increased during ovulation. Oocyte maturation, indicated by oocytes with germinal vesicle breakdown (GVBD), was observed at least 12 h post-injection in fish given 0.01 - 0.10 µg LHRHa + 1 µg PIM/g BW, followed by ovulation 4 h thereafter. Results showed that a simultaneous injection of C. macrocephalus with 0.05 µg LHRHa + 1 µg PIM/g BW at 1800-1900 h followed by stripping at 16-20 h post-injection resulted in high ovulation, fertilization and hatching rates.