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Temporal pattern of feeding response of Chaoborus larvae to starvation
Authors:Minocha  Rakesh; Haney  James F
Institution:Department of Zoology, Universiry of New Hampshire Durham, NH 03824, USA 1Present address: Department of Biochemistry, University of New Hampshire Durham, NH 03824, USA
Abstract:The effect of starvation on the feeding rate of larval Chaoborus(Diptera. Chaoboridae) was investigated using Daphnia roseaas prey. The starvation period varied from 12 h to 22 days.The starved Chaoborus were individually incubated with 10 Daphniaunder controlled light and temperature conditions. Observationswere made on prey mortality every 2 h for the first 12 h andonce after 24 h. Feeding rates gradually increased to a maximumbetween 7–11 days of starvation. After this period, feedingrates declined to previous low levels. Generally, feeding rateswere significantly higher during the first 2–4 h of feeding.Thereafter, feeding rates were lower and exhibited no consistentpattems with length of feeding time.
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