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The Effect of Aggregation on Egg and Larval Survival in Neodiprion swainei Midd. (Hymenoptera: Diprionidae)1

Published online by Cambridge University Press:  31 May 2012

L. A. Lyons
L. A. Lyons
Affiliation:
Forest Insect Laboratory, Sault Ste. Marie, Ontario
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Extract

Recent laboratory studies have shown that the type of spatial distribution of a host or prey population may affect the degree of natural control exerted by parasites and predators. For example, Burnett (1958) showed that the rate of paratisitism of the greenhouse whitefly, Trialeurodes vaporarium (Westw.), by Encarsia formosa Gahan, was considerably greater when the hosts were aggregated than when regularly distributed. In this case, searching parasites were better able to find groups of hosts than isolated ones. Similar results have been obtained by Huffaker (1958) in experiments with a predatory mite, Typhlodroms occidentalis Nesbitt, and a phytophagous mite, Eotetranychus sexmaculatus (Riley). Other important effects of aggregation are evident in the growing literature on this subject, as exemplified by the work of Long (1955), Mizuta (1960), and Morimoto (1960), who showed that the rate of development of some lepidopterous larvae in groups is greater than that of isolated larvae.

Type
Articles
Information
The Canadian Entomologist , Volume 94 , Issue 1 , January 1962 , pp. 49 - 58
Copyright
Copyright © Entomological Society of Canada 1962

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References

Burnett, T. 1958. The effect of host distribution on the reproduction of Encarsia formosa Gahan (Hymenoptera: Chalcidoidea). Can. Ent. 90: 179–191.CrossRefGoogle Scholar
Ghent, A. W. 1960. A study of the group–feeding behaviour of larvae of the jack pine sawfly, Neodiprion pratti banksianae Roh. Behaviour 16(1–2): 110–148.CrossRefGoogle Scholar
Griffiths, K. J. 1959. Observations on the European pine sawfly, Neodiprion sertifer (Geoff.), and its parasites in southern Ontario. Can. Ent. 91: 501–512.CrossRefGoogle Scholar
Huffaker, C. B. 1958. Experimental studies on predation: dispersion factors and predator-prey oscillations. Hilgardia 27: 343–383.CrossRefGoogle Scholar
Long, D. B. 1955. Observations on sub–social behaviour in two species of lepidopterous larvae, Pieris brassicae L. and Plusia gamma L. Trans. R. Ent. Soc. Lond. 106(11): 421–437.CrossRefGoogle Scholar
Mizuta, K. 1960. Effect of individual number on the development and survival of the larvae of two lymantriid species living in aggregation and in scattering. Jap. Jour. Appl. Ent. Zool. 4(3): 146–152.Google Scholar
Morimoto, N. 1960. Influence of density of the larval population upon development in the cabbage butterfly, Pieris rapae crucivora. Jap. Jour. Appl. Ent. Zool. 4(3): 153–158.Google Scholar
Niklas, O. F. and Franz, J.. 1957. Begrunzungsfaktoren einer Gradation der Roten Kiefernbuschhornblattwespe (Neodiprion sertifer (Geoff.)) in Sudwestdeutschland 1953 bis 1956. Mitt. aus der Biol. Bundesanst. Berl. 89, 39 pp.Google Scholar
Schedl, K. E. 1939. Die Populationsdynamik einiger kanadischer Blattwespen. Proc. VII Int. Congr. Ent. (1938) 3: 2052–2104.Google Scholar
Smirnoff, W. A. 1960. Observations on the migration of larvae of Neodiprion swainei Midd. (Hymenoptera: Tenthredinidae). Can. Ent. 92: 957–958.CrossRefGoogle Scholar
Thalenhorst, W. 1953. Vergleichende Betrachtungen über den Massenwechsel der Kiefernbuschhornblattwespen. Zeit. f. angew. Ent. 35: 168–182.CrossRefGoogle Scholar
Tsao, C. H. and Hodson, A. C.. 1956. The effect of different host species on the oviposition and survival of the introduced pine sawfly. Jour. econ. Ent. 49: 400–401.CrossRefGoogle Scholar
Warren, L. O. and Coyne, J. F.. 1958. The pine sawfly—Neodiprion taedae linearis Ross—in Arkansas. Univ. Ark. Agr. Exp. Sta. Bull. 602.Google Scholar
Waters, W. E. 1959. A quantitative measure of aggregation in insects. Jour. econ. Ent. 52: 1180–1184.CrossRefGoogle Scholar
Waters, W. E. and Henson, W. R.. 1959. Some sampling attributes of the negative binomial distribution with special reference to forest insects. For. Sci. 5: 397–412.Google Scholar