Natural food production for aquaculture: Cultivation and nutrition of Chironomid larvae (Insecta, Diptera)
Journal Title: Advances in Environmental Sciences - International Journal of the Bioflux Society - Year 2011, Vol 3, Issue 3
Abstract
In this study, we did not prepared fly room and obtained flies egg from environment (as a mixture of species). A number of 10 trays with 120 cm[sup]2[/sup]scale filled with 2–3 cm dechlorinate tap water were used. Trays were located in special places with electrical lamp on the top of them at night. Flies have positive phototropism so that high number of adult flies were attracted by light. After night, at morning, trays were transferred to the incubation room. Eggs are macroscopic and visible. Incubation room has tanks with 20 liters capacity that filled with water up to 15 cm of tank height. All trays water with eggs was transferred to the tanks. Base of tanks was covered with small gravel. After 1-2 days at 18-28°C, eggs would be hatched and about 2300 larvae would be produced. After eggs hatching, feeding step would be start. We used bakery yeast (Saccharomyces cerevisiae) as food. We mixed 0.2g of yeast with 1 liter water and this blend was used for one week. Incubation tanks were aerated calm; air stones were used for aeration because of the need of significant allocation of oxygen to the water. At collection of insect larvae, air stone has to be removed from the breeding tank. After 11–12 days ‘worms’ were collected with net and used as live food for Huso huso. Red color of this ‘blood worm’ attracts fish larvae which eat it with the specific appetite. In some cases, for high density production, a fly room is necessary and this can be prepared with wood and net. In this way larvae production is possible all year long.
Authors and Affiliations
Javad Sahandi
Keywords
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