Subsidies for production of Chironomus calligraphus larvae (Chironomidae,Diptera) in the laboratory |
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| Authors: | Karine Cristiane Rech Renata Maria Guereschi Katia Heller Torres |
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| Institution: | 1. Aquaculture Graduate Program, Federal University of Santa Catarina, Rodovia Admar Gonzaga no 3532, Florianópolis, SC, Brazil;2. Laboratório de Biologia e Cultivo de Peixes de água Doce, Aquaculture Department, Federal University of Santa Catarina, Rodovia Francisco Thomaz dos Santos, no 3532, Florianópolis, 88066-260, SC, Brazil;3. Laboratório de Biologia e Cultivo de Peixes de água Doce, Aquaculture Department, Federal University of Santa Catarina, Rodovia Francisco Thomaz dos Santos, no 3532, Florianópolis, 88066-260, SC, Brazil |
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| Abstract: | The objective of this study was to evaluate the effect of temperature, type of mineral substrate, and type and amount of feed on the growth of Chironomus calligraphus as a subsidy for the production of Chironomus larvae to feed the fish. Egg production was evaluated at 22, 25, and 28?°C on fine (0.074–0.210?mm), or silty sand (0.002–0.250?mm), and no mineral substrate as control. For larval production, 0.10, 0.20, and 0.30?mg/larvae of fish feed, poultry feed, or turkey manure were used as food. The highest number of egg masses was produced when mineral substrates and 25?°C were used, but the higher number of eggs/mass was registered in the control. Therefore, the total number of eggs and hatched larvae produced was the same in the presence or in the absence of mineral substrates (p?>?0.05). The best results for survival and growth were recorded for larvae reared with fish or poultry food. The increase in the amount of feed was correlated with weight gain only for larvae fed with poultry feed, with no reduction in survival. |
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| Keywords: | insects chironomids cultivation feeding mineral substrate temperature |
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