Summary
The parameters influencing food consumption in larvae and adults of five species of Gerris were studied. An experimental components analysis was utilized with emphasis placed on measurements of the length of time the insects spent handling food items, and the amount of food in the gut at any one time. The following characteristics were noted: (1) The maximum feeding time required to achieve satiation was 2–2.5 h for all gerrids above 10 mg wet weight. For gerrids below this weight, feeding time declined at a logarithmic rate. (2) Body size had little influence on the duration of the feeding period after food deprivation; only with the first and second instar larvae was a significant difference noted. (3) The average duration of the feeding and non-feeding periods was 10.4 and 24.6 min respectively for satiated adult G. remigis in the presence of excess food. (4) Signifcant differences in relative digestive rate existed between adult and larvae irrespective of species. (5) The smaller the gerrid, the greater the volume relative to its body weight that could be consumed at a single feeding, and for all gerrids, the amount consumed per day was greater than the maximum amount that can be ingested at a single feeding, this difference being larger in the larvae than in the adults. (6) The relationship between daily amount consumed and temperature was linear for four species, increasing with increasing temperature; food consumption in G. remigis, however, peaked at about 19°C, and declined linearily at temperatures both above and below this value. (7) Irrespective of instar and stadium duration, food consumption for G. notabilis peaked within a stadium about 40% of the way through the stadium.
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References
Brett, J.R.: Satiation time, appetite, and maximum food intake of sockeye salmon (Oncorhynchus nerka). J. Fish, Res. Bd. Canada 28, 409–415 (1971)
Gallopin, G.C., Kitching, R.L.: Studies on the process of ingestion in the predatory bug Podisus maculiventris (Hemiptera: Pentatomidae). Can. Entomol. 104, 231–237 (1972)
Hinde, R.A.: Animal behaviour, 534 pp. Toronto: McGraw-Hill 1966
Holling, C.S.: The functional response of invertegrate predators to prey density. Memoirs Entomol. Soc. Canada. No. 48, 86 p. (1966)
Hsiao, T.A., Fraenkel, E.: Selection and specificity of the Colorado potato beetle for solanaceous and nonsolanaceous plants. Ann. Entomol. Soc. Am. 61, 493–503 (1968)
Jamieson, G.S.: Coexistence in the Gerridae. Ph.D. diss. University of British Columbia, Vancouver, B.C. (1973)
Latheef, M.A., Harcourt, D.G.: A quantitative study of food consumption, assimilation, and growth in Leptinotarsa decemlineata (Coleoptera: Chrysomelidae) on two host plants. Can. Entomol. 104, 1271–1276 (1972)
LeRoux, E.J.: The application of ecological principles to orchard Entomology in Canada. Can. Entomol. 96, 348–356 (1964)
Morris, R.F.: The effect of predator age and prey defence on the functional response of Podisus maculiventris (Say) to the density of Hyphantria cunea (Drury). Can. Entomol. 95, 1009–1020 (1963)
Mukerji, M.K., Guppy, J.C.: A quantitative study of food consumption and growth in Pseudaletia unipuncta (Lepidoptera: Noctuidae). Can. Entomol. 102, 1179–1188 (1970)
Mukerji, M.K., LeRoux, E.J.: The effect of predator age on the functional response of Podisus maculiventris to the prey size of Galleria mellonella. Can. Entomol. 101, 314–327 (1969a)
Mukerji, M.K., LeRoux, E.J.: A quantitative study of food consumption and growth of Podisus maculiventris (Hemiptera: Pentatomidae). Can. Entolmol. 101, 387–403 (1969b)
Sandness, J.N., McMurtry, J.A.: Prey consumption behaviour of Amblyseius largoensis in relation to hunger. Can. Entomol. 104, 461–470 (1972)
Scudder, G.G.E.: The Gerridae (Hemiptera) of British Columbia. J. Entomol. Soc. Brit. Columbia 68, 3–10 (1971)
Scudder, G.G.E., Jamieson, G.S.: The immature stages of Gerris (Hemiptera) in British Columbia. J. Entomol. Soc. Brit. Columbia 69, 72–79 (1972)
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Jamieson, G.S., Scudder, G.G.E. Food consumption in Gerris (Hemiptera). Oecologia 30, 23–41 (1977). https://doi.org/10.1007/BF00344889
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DOI: https://doi.org/10.1007/BF00344889