Hostname: page-component-586b7cd67f-tf8b9 Total loading time: 0 Render date: 2024-11-22T18:47:05.709Z Has data issue: false hasContentIssue false
  • English
  • Français

A modified binomial model that describes the infection dynamics of the entomopathogenic nematode Steinernema feltiae (Steinernematidae; Nematoda)

Published online by Cambridge University Press:  06 April 2009

D. B. Hay  and
J. S. Fenlon
D. B. Hay
Affiliation:
Horticulture Research International, Worthing Road, Littlehampton, West Sussex BN17 6LP, UK
J. S. Fenlon
Affiliation:
Horticulture Research International, Worthing Road, Littlehampton, West Sussex BN17 6LP, UK
Get access Rights & Permissions [Opens in a new window]

Summary

Third-stage (dauer) juveniles of the entomopathogenic nematode Steinernema feltiae from 3 laboratory populations were tested for infectivity to larvae of the sciarid fly Lycoriellia solani. Bioassay experiments were done to assess the effects of nematode application density, exposure time and host density on the proportion of individuals that established infection. When dauer stages were presented to a host singly, establishment rates of 28, 26 and 18% were obtained for the 3 populations, but the presence of conspecifics consistently increased the rate of establishment to 42, 33 and 21% respectively, at 20 nematodes per host. A modified binomial model was developed to show that nematode establishment was not related to application density in a linear fashion, as initial infection facilitated secondary colonization. The data suggest that 3 subpopulations of nematodes may be distinguished by their infection behaviour: a first group of individuals with the behavioural propensity to initiate infection in unparasitized insects, a second that only invaded infected hosts, and a third group of non-invaders that failed to establish in L. solani.

Keywords

parasite behaviourbinomial modelhost-infection strategiesentomopathogenic nematode
Type
Research Article
Information
Parasitology , Volume 111 , Issue 5 , December 1995 , pp. 627 - 633
Copyright
Copyright © Cambridge University Press 1995

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

REFERENCES

Akhurst, R. J. & Boemare, M. E. (1990). Biology and taxonomy of Xenorhabdus. In Entomopathogenic Nematodes in Biological Control (ed. Gaugler, R. & Kaya, H. K.), pp. 75–90. Florida: CRC Press.Google Scholar
Akhurst, R. J. & Dunphy, G. B. (1993). Tripartite interactions between symbiotically associated entomopathogenic bacteria, nematodes and their insect hosts. In Parasites and Pathogens of Insects, Vol 2: Pathogens (ed. Beckage, N. E., Thompson, S. E. & Federici, B. A.), pp. 1–23. New York: Academic Press.Google Scholar
Bedding, R. A., Molyneux, A. S. & Akhurst, R. J. (1983). Heterorhabditis spp., Neoaplectana spp. and Steinernema kraussei: Interspecific and intraspecific differences in infectivity for insects. Experimental Parasitology 55, 249–57.CrossRefGoogle ScholarPubMed
Daley, D. J. & Maindonald, J. H. (1989). A unified view of models describing the avoidance of superparasitism. IMA Journal of Mathematics Applied in Medicine and Biology 6, 161–78.CrossRefGoogle Scholar
Epsky, N. D. & Capinera, L. J. (1993). Quantification of invasion of two strains of Steinernema carpocapsae (Weiser) into three Lepidopteran larvae. Journal of Nematology 25, 173–80.Google ScholarPubMed
Fan, X. & Hominick, W. M. (1991 a). Efficiency of the Galleria (Wax Moth) baiting technique for recovering infective stages of entomopathogenic rhabditids (Steinernematidae and Heterorhabditidae) from sand and soil. Revue de Nématologie 14, 381–7.Google Scholar
Fan, X. & Hominick, W. M. (1992 b). Effects of low storage temperature on survival and infectivity of two Steinernema species (Nematoda: Steinernematidae). Revue de Nématologie 14, 407–12.Google Scholar
Genstat 5 Committee (1993). Genstat 5 Release 3 Reference Manual, pp. 796. Oxford: Clarendon Press.Google Scholar
Hay, D. B. & Richardson, P. N. (1995). Inter- and intraspecific variation in infectivity of Steinernema spp. to larvae of the mushroom fly Lycoriella solani. Entomologia Experimental et Applicata (in the Press).CrossRefGoogle Scholar
Hominick, W. M. & Reid, A. P. (1990). Perspectives on entomopathogenic nematology. In Entomopathogenic Nematodes in Biological Control (ed. Gaugler, R. & Kaya, H. K.), pp. 327–45. Florida: CRC Press.Google Scholar
Huber, J. & Hughes, P. R. (1984). Quantitative bioassay in insect pathology. Bulletin of the Entomological Society of America 30, 31–4.CrossRefGoogle Scholar
Kaya, H. K. & Gaugler, R. (1993). Entomopathogenic nematodes. Annual Review of Entomology 38, 181–206.CrossRefGoogle Scholar
Mannion, C. M. & Jansson, R. K. (1993). InfeCtivity of five entomopathogenic nematodes to the sweet potato weevil, Cylas formicarius (F.), (Coleoptera: Apionidae) in three experimental areas. Journal of Invertebrate Pathology 62, 29–36.Google Scholar
McCullagh, P. & Nelder, J. A. (1989). Generalized Linear Models, 2nd Edn.London: Chapman and Hall.Google Scholar
Peters, A. & Ehlers, R.-U. (1994). Susceptibility of Leatherjackets (Tipula paludosa and Tipula oleracea; Xematocera) to the entomopathogenic nematode Steinernema feltiae. Journal of Invertebrate Pathology 63, 163–71.CrossRefGoogle Scholar
Peto, S. (1953). A dose response equation for the invasion of microorganisms. Biometrics 9, 320–35.CrossRefGoogle Scholar
Poinar, G. O. Jr. (1990). Taxonomy and biology of Steinernematidae and Heterorhabditidae. In Entomopathogenic Nematodes in Biological Control (ed. Gaugler, R. & Kaya, H. K.), pp. 23–61. Florida: CRC Press.Google Scholar