Hostname: page-component-cd9895bd7-q99xh Total loading time: 0 Render date: 2024-12-27T05:39:46.318Z Has data issue: false hasContentIssue false
  • English
  • Français

NOTES ON LIFE-HISTORY, FECUNDITY, LONGEVITY, AND ATTACK PATTERN OF AGATHIS PUMILA (HYMENOPTERA: BRACONIDAE), A PARASITE OF THE LARCH CASEBEARER

Published online by Cambridge University Press:  31 May 2012

F. W. Quednau
F. W. Quednau
Affiliation:
Forest Research Laboratory, Department of Fisheries and Forestry, Quebec, Quebec
Get access Rights & Permissions [Opens in a new window]

Abstract

Agathis pumila (Ratzeburg) is a host-specific univoltine solitary internal braconid parasite attacking the first- and second-instar larvae of the larch case-bearer. Descriptions and illustrations of all developmental stages are given. The adults mated in the laboratory when 1-day-old females were exposed to 5-day-old males. The reproductive system of the female is discussed. The inherent fecundity is over 300 eggs and in tests at 75°F the average number of eggs laid per female was 139.8. Average longevity is 22.0 days. The average number of hosts destroyed with the ovipositor was 15.2 per female. The incubation period of the parasite’s egg was 7 days at 77°F. The attack pattern of A. pumila is described. In finding hosts the parasite was guided by chemotaxis and vibrotaxis. Longevity of honey-fed A. pumila females, without hosts, at constant temperatures ranging from 50° to 95°F was, on the average, highest at 60°F (45.6 days) and lowest at 95°F (10.6 days). Superparasitism occurs in the field and laboratory.

Type
Articles
Information
The Canadian Entomologist , Volume 102 , Issue 6 , June 1970 , pp. 736 - 745
Copyright
Copyright © Entomological Society of Canada 1970

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

Baier, M. 1964. Zur Biologie und Gradologie der Sattelmücke Haplodiplosis equestris Wagner (Diptera, Cecidomyidae). Z. angew. Ent. 53: 217–273.CrossRefGoogle Scholar
Cody, J. B. 1963. The rate of spread of Agathis pumila (Ratz.) and its interaction with Epilampsis laricinellae (Ratz.). M.Sc. (F.) Thesis, University of Michigan.Google Scholar
Daniel, D. M. 1932. Macrocentrus ancylivorus Rohwer, a polyembryonic braconid parasite of the oriental fruit moth. N.Y. St. Agric. Exp. Stn Tech. Bull. 187.Google Scholar
Flanders, S. E. 1942. Oösorption and ovulation in relation to oviposition in the parasitic hymenoptera. Ann. ent. Soc. Am. 35: 251–266.CrossRefGoogle Scholar
Flanders, S. E. 1962. The parasitic Hymenoptera: Specialists in population regulation. Can. Ent. 94: 1133–1147.CrossRefGoogle Scholar
Garman, P., and Brigham, W. T.. 1933. Studies on parasites of the oriental fruit moth. Conn. agric. Exp. Stn Bull. 356.Google Scholar
Graham, A. R. 1958. Effectiveness of two introduced parasites of the larch casebearer, Coleophora laricella (Hbn.) (Lepidoptera: Coleophoridae), in Ontario. 88th Rep. (1957) ent. Soc. Ont. pp. 37–41.Google Scholar
Jackson, D. J. 1928. The biology of Dinocampus (Perilitus) rutilus Nees, a braconid parasite of Sitona lineata L. I. Proc. Zool. Soc. Lond. (1928): 597–630.Google Scholar
Quednau, F. W. 1967 a. Ecological observations on Chrysocharis laricinellae (Hymenoptera: Eulophidae), a parasite of the larch casebearer (Coleophora laricella). Can. Ent. 99: 631–641.CrossRefGoogle Scholar
Quednau, F. W. 1967 b. Notes on mating, oviposition, adult longevity and incubation period of eggs of the larch casebearer, Coleophora laricella (Lepidoptera: Coleophoridae) in the laboratory. Can. Ent. 99: 397–401.CrossRefGoogle Scholar
Sloan, N. F. 1965. Biotic factors affecting populations of the larch casebearer, Coleophora laricella Hbn. in Wisconsin. Ph.D. Thesis, University of Wisconsin.Google Scholar
Thorpe, W. H. 1933. Notes on the natural control of Coleophora laricella, the larch casebearer. Bull. ent. Res. 24: 271–291.CrossRefGoogle Scholar