Hostname: page-component-586b7cd67f-dsjbd Total loading time: 0 Render date: 2024-12-01T03:34:03.673Z Has data issue: false hasContentIssue false
  • English
  • Français

Differences in Anatis mali Auct. and Coleomegilla maculata lengi Timberlake to Changes in the Quality and Quantity of the Larval Food (Coleoptera: Coccinellidae)

Published online by Cambridge University Press:  31 May 2012

B. C. Smith
B. C. Smith
Affiliation:
Research Institute, Research Branch, Canada Department of Agriculture, Belleville, Ontario
Get access Rights & Permissions [Opens in a new window]

Abstract

Capacity to adjust to variable resources of food is a useful criterion for assessing the regulatory influence of predators on the population of prey. Anatis mali Auct. was better adapted than Coleomegilla maculata lengi Timberlake to tolerate a shortage of food. When the food supply was increased, survival and adult weight increased in both species – adult weight to a much greater extent in A. mali than in C. maculata, and developmental time decreased in A. mali, but was unchanged in C. maculata. C. maculata was better able to withstand regularly occurring periods of intermittent feeding than a shortage near the end of its development.

The conversion ratio of third-instar A. mali larvae and the growth rate of C. maculata larvae were higher when individuals were fed on Acyrthosiphon pisum (Harr.) than on Rhopalosiphum maidis (Fitch). Between the minimum food requirement and the maximum quantity eaten, the conversion ratio of A. mali decreased whereas that of C. maculata remained constant except at the highest quantities of food where the rate of intake increased and the ratio decreased. Relative food intake rate is an accurate criterion for comparing stages and species of predators that are fed on various foods.

Type
Articles
Information
The Canadian Entomologist , Volume 97 , Issue 11 , November 1965 , pp. 1159 - 1166
Copyright
Copyright © Entomological Society of Canada 1965

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Dixon, A. F. G. 1959. An experimental study of the searching behaviour of the predatory coccinellid beetle Adalia decempunctata (L.). J. Anim. Ecol. 28: 259–281.CrossRefGoogle Scholar
Evans, D. E. 1962. The food requirements of Phonoctonus nigrofasciatus Stål. (Hemiptera: Reduviidae). Ent. Exptl. Appl. 5: 33–39.CrossRefGoogle Scholar
Fewkes, D. W. 1960. The food requirements by weight of some British Nabidae (Heteroptera). Ent. Exptl. Appl. 3: 231–237.CrossRefGoogle Scholar
Gordon, H. T. 1959. Minimal nutritional requirements of the German roach, Blattella germanica L. Ann. N.Y. Acad. Sci. 77: 290–351.CrossRefGoogle Scholar
House, H. L. 1965. The physiology of insecta. Vol. 2, pp. 769–813. Academic Press Inc., N.Y.Google Scholar
Kaddou, I. K. 1960. The feeding behaviour of Hippodamia quinquesignata (Kirby) larvae. Univ. Calif. Berkeley, Publ. Entomol. 16: 181–232.Google Scholar
Smith, B. C. 1958. Development, feeding habits, and predator-prey relations of insect predators of the balsam woolly aphid, Adelges piceae (Ratz.) (Homoptera: Adelgidae), recently introduced into Canada. Canad. Ent. 90: 441–449.CrossRefGoogle Scholar
Smith, B. C. 1960. A technique for rearing coccinellid beetles on dry foods, and influence of various pollens on the development of Coleomegilla maculata lengi Timb. (Coleoptera: Coccinellidae). Canad. J. Zool. 38: 1047–1049.CrossRefGoogle Scholar
Smith, B. C. 1961. Results of rearing some coccinellid (Coleoptera: Coccinellidae) larvae on various pollens. Proc. ent. Soc. Ontario 91: 270–271.Google Scholar
Smith, B. C. 1965. Growth and development of coccinellid larvae on dry, particulate foods (Coleoptera: Coccinellidae). Canad. Ent. 97: 760–768.CrossRefGoogle Scholar
Turnbull, A. L. 1962. Quantitative studies of food of Linyphia triangularis Clerck (Araneae, Linyphiidae). Canad. Ent. 94: 1233–1249.CrossRefGoogle Scholar