Hostname: page-component-745bb68f8f-g4j75 Total loading time: 0 Render date: 2025-01-10T23:55:13.970Z Has data issue: false hasContentIssue false
  • English
  • Français

Some Mechanisms That Affect the Sex Ratio of Nasonia vitripennis (Walk.) (Hymenoptera: Pteromalidae) Reared From Superparasitized Housefly Pupae

Published online by Cambridge University Press:  31 May 2012

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

Abstract

Female Nasonia vitripennis (Walk.) parasitizing housefly (Musca domestica L.) pupae produce a smaller percentage of female progeny at high parasite:host ratios than at lower ones because they fertilize a smaller percentage of their eggs (in this species unfertilized eggs produce male progeny), and because more female than male larvae die on superparasitized hosts. The adult females fertilize relatively fewer eggs at high than at low parasite:host ratios for two reasons. First, they encounter relatively more previously attacked hosts, on which they lay a smaller percentage of fertilized eggs than on previously unattacked ones; second, they more often encounter other female parasites while ovipositing, and this interference reduces the percentage of fertilized eggs they lay.

Type
Articles
Information
The Canadian Entomologist , Volume 98 , Issue 6 , June 1966 , pp. 645 - 653
Copyright
Copyright © Entomological Society of Canada 1966

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

Brunson, M. H. 1937. The influence of the instars of host larvae on the sex of the progeny of Tiphia popilliavora Roh. Science 86: 197.CrossRefGoogle ScholarPubMed
Crandell, H. A. 1939. The biology of Pachycrepoideus dubius Ashmead, (Hymenoptera), a pteromalid parasite of Piophila casei Linné (Diptera). Ann. ent. Soc. Amer. 32: 632–654.CrossRefGoogle Scholar
Flanders, S. E. 1939. Environmental control of sex in hymenopterous insects. Ann. ent. Soc. Amer. 32: 11–26.CrossRefGoogle Scholar
Grosch, D. S. 1948. Dwarfism and differential mortality in Habrobracon. J. exp. Zool. 107: 289–313.CrossRefGoogle ScholarPubMed
Hoel, P. G. 1954. Introduction to Mathematical Statistics. Second edition. John Wiley and Sons, Inc., New York.Google Scholar
Iyatomi, K. 1958. Effect of superparasitism on reproduction of Trichogramma japonicum Ashmead. Proc. 10th. Int. Congr. Ent., Montreal 4: 897–899.Google Scholar
Jackson, D. J. 1958. Observations on the biology of Caraphractus cinctus Walker (Hymenoptera: Mymaridae), a parasitoid of the eggs of Dytiscidae. I. Methods of rearing and numbers bred on different host eggs. Trans. R. ent. Soc., Lond. 110: 533–554.CrossRefGoogle Scholar
Kuno, E. 1962. The effect of population density on the reproduction of Trichogramma japonicum Ashmead (Hymenoptera: Trichogrammatidae). Researches Popul. Ecol. 4: 47–59.CrossRefGoogle Scholar
Matsuzawa, H., Okamoto, H. and Miyamoto, Y.. 1957. (Some influences of the density of the parasite progeny Apanteles glomeratus upon the host, Pieris rapae crucivora and the parasite itself). II. [In Japanese with an English summary.] Jap. J. appl. Ent. Zool. 1: 131–134.CrossRefGoogle Scholar
Salt, G. 1936. Experimental studies in insect parasitism. IV. The effect of superparasitism on populations of Trichogramma evanescens. J. exp. Biol. 13: 363–375.CrossRefGoogle Scholar
Vandel, A. 1932. Le sexe des parasites dépend-il du nombre d'individus renfermés dans le même hôte? Soc. ent. Fr., Livre Centen. pp. 245–252.Google Scholar
Wheeler, W. M. 1910. The effects of parasitic and other kinds of castration in insects. J. exp. Zool. 8: 377–438.CrossRefGoogle Scholar
Wilkes, A. 1963. Environmental causes of variation in the sex ratio of an arrhenotokous insect, Dahlbominus fuliginosus (Nees) (Hymenoptera: Eulophidae). Canad. Ent. 95: 183–202.CrossRefGoogle Scholar
Wylie, H. G. 1965a. Discrimination between parasitized and unparasitized house fly pupae by females of Nasonia vitripennis (Walk.) (Hymenoptera: Pteromalidae). Canad. Ent. 97: 279–286.CrossRefGoogle Scholar
Wylie, H. G. 1965b. Effects of superparasitism on Nasonia vitripennis (Walk.) (Hymenoptera: Pteromalidae). Canad. Ent. 97: 326–331.CrossRefGoogle Scholar
Wylie, H. G. 1965c. Some factors that reduce the reproductive rate of Nasonia vitripennis (Walk.) at high adult population densities. Canad. Ent. 97: 970–977.CrossRefGoogle Scholar