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SUSCEPTIBILITY OF FIRST-INSTAR CABBAGE MAGGOT, DELIA RADICUM (L.) (ANTHOMYIIDAE: DIPTERA), TO STRAINS OF THE ENTOMOGENOUS NEMATODES STEINERNEMA FELTIAE FILIPJEV, S. BIBIONIS (BOVIEN), HETERORHABDITIS BACTERIOPHORA POINAR, AND H. HELIOTHIDIS (KHAN, BROOKS, AND HIRSCHMANN)1

Published online by Cambridge University Press:  31 May 2012

G.K. Bracken
G.K. Bracken
Affiliation:
Agriculture Canada Research Station, 195 Dafoe Road, Winnipeg, Manitoba, Canada R3T 2M9
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Abstract

The susceptibility of first-instar cabbage maggot, Delia radicum (L.), to parasitism by seven strains or species of entomogenous nematodes was compared in Petri dishes lined with moist filter paper. The effective doses for 50% mortality (ED50) of the Mexican, Breton, and All strains of Steinernema feltiae Filipjev, of S. bibionis (Bovien), and of Heterorhabditis heliothidis (Khan, Brooks, and Hirschmann) ranged from 98 to 341 infective juveniles per host larva with overlapping 95% confidence intervals; the slopes ranged from 1.36 to 1.07. The DD136 strain of S. feltiae and the species H. bacteriophora Poinar were significantly less lethal with ED50 values of 1113 and 1719 nematodes per host larva, respectively. The addition of a thin disc of rutabaga into the test dishes increased ED50 values by a factor of 20 or more. Application of the Mexican strain of S. feltiae at 5 × 105 nematodes per plant to small caged field plots of rutabaga artificially infested with eggs of D radicum provided control similar to that with diazinon applied at 1.4 L AI per hectare. Practical control of D. radicum on rutabaga with entomogenous nematodes would require strains or species considerably more lethal than those tested here.

Résumé

La susceptibilité des larves du premier stade de la mouche du chou, Delia radicum (L.), au parasitisme par sept variétés ou d’espèces de nematodes entomogènes a été comparée en cuves de Pétri avec du papier filtre humide. Les doses efficaces pour produire une mortalité de 50% (DE50) des variétés Mexican, Breton et AH de Steinernema feltiae Filipjev, de S. bibionis (Bovien) et de Heterorhabditis heliothidis (Khan, Brooks et Hirschmann) se sont étendues de 98 à 341 jeunes infectieuses par larve-hôte avec des intervalles de confiance à 95% chevauchant; les inclinaisons se sont étendues de 1,36 à 1,07. La variété DD136 de S. feltiae et l’espèce H. bacteriophora Poinar ont été significativement moins mortelles avec les DE50’s de 1113 et de 1719 nematodes, respectivement, par larve-hôte. L’adjonction d’un disque mince de navet aux cuves d’essai a augmenté les DE50’s d’un facteur de 20 ou plus. L’applicage de la variété Mexican de S. feltiae à un niveau de 5 × 105 nematodes par plante dans les petits lots encagés de navet, infestés d’oeufs de D. radicum a donné un contrôle semblable à celui obtenu avec la diazinone, arrosée à 1,4 L AI par hectare. Le contrôle pratique de D. radicum sur le navet avec des nematodes entomogènes exigerait des variétés ou des espèces considérablement plus mortelles que celles essayées dans ce travail.

Type
Articles
Information
The Canadian Entomologist , Volume 122 , Issue 4 , August 1990 , pp. 633 - 639
Copyright
Copyright © Entomological Society of Canada 1990

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References

Bedding, R.A., and Molyneux, A.S.. 1982. Penetration of insect cuticle by infectious juveniles of Heterorhabditis spp. (Heterorhabditidae: Nematoda). Nematologica 28: 354–359.CrossRefGoogle Scholar
Bedding, R.A., Molyneux, A.S., and Akhurst, R.J.. 1983. Heterorhabditis spp., Neoplectana spp., and Steinernema kraussei: interspecific and intraspecific differences in infectivity for insects. Exp. Parasitol. 55: 259–257.CrossRefGoogle Scholar
Bracken, G.K. 1988. Seasonal occurrence and infestation potential of cabbage maggot, Delia radicum (L.) (Diptera: Anthomyiidae), attacking rutabaga in Manitoba as determined by captures of females in water traps. Can. Ent. 120: 609–614.CrossRefGoogle Scholar
Dutky, S.R., Thompson, J.V., and Cantwell, G.E.. 1964. A technique for the mass propagation of the DD-136 nematode. J. Insect Pathol. 6: 417–422.Google Scholar
Felsot, A.S. 1989. Enhanced biodegration of insecticides in soil: implications for agroecosystems. A. Rev. Ent. 34: 453–476.CrossRefGoogle Scholar
Georgis, R., and Hague, N.G.M.. 1981. A neoplectanid nematode in the larch sawfly Cephalcia lariciphila (Hymenoptera: Pamphiliidae). Ann. appl. Biol. 99: 171–177.CrossRefGoogle Scholar
Georgis, R., Poinar, G.O. Jr., and Wilson, A.P.. 1983. Practical control of the cabbage root maggot, Hylemya brassicae (Diptera; Anthomyiidae), by entomogenous nematodes. IRCS Med. Sci. 11: 322.Google Scholar
Griffiths, G.C.D. 1986. Phenology and dispersion of Delia radicum (L.) (Diptera: Anthomyiidae) in canola fields at Morinville, Alberta. Quaest. Ent. 22: 29–50.Google Scholar
Harris, C.R., Chapman, R.A., Morris, R.F., and Stevenson, A.B.. 1988. Enhanced soil microbial degration of carbofuran and fensufothion — a factor contributing to the decline in effectiveness of some soil insect control programs in Canada. J. Environ. Sci. Health, B. 23: 301–316.CrossRefGoogle Scholar
Jackson, J.J. 1985. Parasitism of the western corn rootworm with the nematode, Steinernema feltiae. M.Sc. thesis, University of Minnesota, St. Paul, MN. 88 pp.Google Scholar
Kaya, H.K. 1985. Entomogenous nematodes for insect control in IPM systems. pp. 283–302in Hoy, M.A., and Herzog, D.C. (Eds.), Biological Control in Agricultural IPM Systems. Academic Press Inc., New York, NY.CrossRefGoogle Scholar
Litchfield, J.T., and Wilcoxon, F.. 1949. A simplified method of evaluating dose–effect experiments. J. Pharm. Exp. Therapeutics 96: 99–103.Google ScholarPubMed
Matthewman, W.G., and Harcourt, D.G.. 1972. Phenology of egg-laying of the cabbage maggot, Hylemya brassicae (Bouche) on early cabbage in eastern Ontario. Proc. ent. Soc. Ont. 102: 28–35.Google Scholar
Morris, O.N. 1985. Susceptibility of 31 species of agricultural insect pests to the entomogenous nematodes Steinernema feltiae and Heterorhabditis bacteriophora. Can. Ent. 117: 401–407.CrossRefGoogle Scholar
Read, D.C. 1969. Rearing the cabbage maggot with and without diapause. Can. Ent. 101: 725–737.CrossRefGoogle Scholar
Read, D.C. 1986. Influence of weather conditions and microorganisms on persistence of insecticides to control root maggots (Diptera: Anthomyiidae) in rutabagas. Agric. Ecosystem Environ. 16: 165–173.CrossRefGoogle Scholar
Szczygiel, M. 1980. A study of the possibilities of limiting the cabbage maggot population—Hylemya brassicae Bouche (Diptera, Anthomyiidae) — by parasitic nematodes of the family Steinernematidae. M.Sc. thesis, Agric. Acad., Krakow. 34 pp. [In Polish.]Google Scholar
Welch, H.E., and Briand, L.B.. 1961. Field experiment on the use of a nematode for the control of vegetable crop insects. Proc. ent. Soc. Ont. 91: 197–202.Google Scholar