International study on Artemia. XXV. Factors determining the nutritional effectiveness of Artemia: The relative impact of chlorinated hydrocarbons and essential fatty acids in San Francisco Bay and San Pablo Bay Artemia
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CitationLéger, P., Sorgeloos, P., Millamena, O. M., & Simpson, K. L. (1985). International study on Artemia. XXV. Factors determining the nutritional effectiveness of Artemia: The relative impact of chlorinated hydrocarbons and essential fatty acids in San Francisco Bay and San Pablo Bay Artemia.
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Improved reproductive performance of tiger tail seahorse, Hippocampus comes, by mysid shrimp fed singly or in combination with other natural food The brood size, parturition frequency and parturition occurrence of tiger tail seahorse, Hippocampus comes were evaluated for 180 days using single and combined diets comprising Artemia salina, mysid shrimp Mesopodopsis orientalis and frozen Acetes sp. The daily food intake of seahorse was determined with the following treatments: T1-Artemia; T2-mysid; T3-Acetes; T4-Artemia + mysid; T5-Artemia + Acetes ; T6-mysid + Acetes; and T7-Artemia + mysid + Acetes. Percent body weight (% BW) of daily food intake until satiation was similar in Artemia, mysid and Artemia + Acetes (20-22 %), but significantly higher in mysid + Acetes, Artemia + mysid, and Artemia + mysid + Acetes with 25, 31 and 33 %, respectively (p < 0.05). Single diet of frozen Acetes was least consumed at 6 %. Thus, mysid was the preferred food of adult seahorses as a single or combined diet with Artemia and Acetes. Diet treatments with single mysid or combined with Artemia and Acetes have significantly higher brood size (223-292) than the other treatments (107-152) (p < 0.05). Significantly longer parturition interval (60 days) was observed in seahorses fed with Artemia than those fed with mysid or in combination with other natural food (13-26 days), but not significantly different to seahorses fed with Acetes and Artemia + Acetes (42-45 days). Parturition occurrence in seahorse fed with Artemia, Acetes and Artemia + Acetes (2.7-4.3) were the lowest, while Artemia + mysid and Artemia + mysid + Acetes have significantly higher occurrence followed by mysids + Acetes and mysid only (p < 0.05). Thus, the reproductive performance was improved when seahorses were fed with single or combined foods including mysid. Total lipid was positively correlated to brood size and parturition occurrence, while DHA:EPA ratio was negatively correlated to brood size and parturition occurrence.
Conference paperIG Borlongan, CL Marte & J Nocillado - 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 CenterA preliminary feeding experiment was conducted to determine growth and survival of milkfish larvae reared on various feeding regimes involving the use of artificial diets. Two larval diets (Feed A and Feed B) containing 45% protein and 10% lipid were fed either alone or in combination with Brachionus from day 8 to day 21. The feed in the control treatment were Brachionus (10 ind/ml) from day 8 to day 14 and Artemia (2-3 ind/ml) from day 15 to day 21. Larvae in all treatments were fed Brachionus (10 ind/ml) from day 2 to day 7. No significant differences were observed in survival rates, total length, wet weight and dry weight among fish fed combination of Brachionus and Feed B and the control feed (Brachionus and Artemia). These promising results indicate the possibility of using Feed B as partial replacement or supplement to live food. However, lowest survival rates, total length, and weight were obtained in fish fed either Feed A or Feed B alone, indicating that the test artificial diets given solely to milkfish larvae starting from day 8 can not support good growth and survival. Further studies on the development of improved artificial diets for larval milkfish need to be done.
Conference paperMA de los Santos, T Taro, D Uehara, I Dwight & L Masami - In ET Quinitio, FDP Estepa, YC Thampi Sam Raj & A Mandal (Eds.), Proceedings of the International Seminar-Workshop on Mud Crab Aquaculture and Fisheries Management, 10-12 April 2013, Tamil Nadu, India, 2015 - Rajiv Gandhi Centre for Aquaculture (MPEDA)The survival rate of mud crab or mangrove crab Scylla serrata larvae was evaluated using black and yellow-painted tanks. About 400,000 zoea 1 were stocked in 6 tons of treated seawater. The larvae were initially fed with rotifers and subsequently with newly hatched Artemia until the megalopa stage. The larval rearing water was enriched with a combination of Spirulina powder and frozen micro-algal products that include Nannochloropsis sp., Tetraselmis sp. and Thallasiosira weissfolgii. After 15 to 17 days of rearing, the larvae successfully molted to megalopa stage. A total of 377,062 megalopae were harvested. Although the survival rate of megalopae was higher in yellow tanks (23.63± 0.03%), it was not significantly different when compared to those in black tanks (15.66±0.02%) (P=0.05).