Hostname: page-component-cd9895bd7-mkpzs Total loading time: 0 Render date: 2024-12-26T13:38:55.000Z Has data issue: false hasContentIssue false
  • English
  • Français

LABORATORY AND FIELD EVALUATION OF NEOAPLECTANA CARPOCAPSAE (RHABDITIDA: STEINERNEMATIDAE) AGAINST THE ELM LEAF BEETLE (COLEOPTERA: CHRYSOMELIDAE) AND THE WESTERN SPRUCE BUDWORM (LEPIDOPTERA: TORTRICIDAE)1

Published online by Cambridge University Press:  31 May 2012

Harry K. Kaya ,
Arnold H. Hara  and
Richard C. Reardon
Harry K. Kaya
Affiliation:
Davis, California 95616
Arnold H. Hara
Affiliation:
Davis, California 95616
Richard C. Reardon
Affiliation:
Davis, California 95616
Get access Rights & Permissions [Opens in a new window]

Abstract

Laboratory studies showed that elm leaf beetle, Pyrrhalta luteola (Müller), larvae and pupae were susceptible to the nematode Neoaplectana carpocapsae Weiser; adults were less likely to be infected because of their dispersal ability. Spruce budworm, Choristoneura occidentalis Freeman, larvae were susceptible to the nematode in the laboratory. Field application of the nematode in 2% aqueous Volck oil suspension against elm leaf beetle or spruce budworm larvae did not significantly reduce the populations when compared with controls. Desiccation of the infective nematodes may be a factor in the variable results for elm leaf beetle, and cool temperatures and rain may have been factors in the poor results for spruce budworm. However, significant population reduction occurred in nematode treatments against elm leaf beetle pupae in litter. This nematode may be used against beetle pupae in conjunction with other control tactics.

Résumé

Des études de laboratoire ont montré que les larves et les nymphes du galéruque de l’orme, Pyrrhalta luteola (Müller), sont susceptibles au nématode Neoaplectana carpocapsae Weiser; les adultes ont moins de chances d’être infectés à cause de leur capacité de dispersion. Au laboratoire, les larves de la tordeuse occidentale de l’épinette, Choristoneura occidentalis Freeman, sont susceptibles au nématode. Sur le terrain, des applications de nématodes dans une suspension à 2% d’huile Volck contre le galéruque ou les larves de la tordeuse n’ont pas réduit leurs populations de façon significative par rapport à celles de témoins. La dessication des nématodes appliqués a pu être un facteur de variabilité des résultats pour le galéruque de l’orme, et les basses températures combinées à la pluie sont possiblement responsables des piètres résultats avec la tordeuse. Cependant, une réduction significative de population a suivi les applications de nématodes faites dans la litière contre le galéruque de l’orme. Le nématode peut être utilisé contre les nymphes du galéruque en combinaison avec d’autres tactiques de lutte.

Type
Articles
Information
The Canadian Entomologist , Volume 113 , Issue 9 , September 1981 , pp. 787 - 793
Copyright
Copyright © Entomological Society of Canada 1981

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

Bedding, R. A. 1976. New methods increase the feasibility of using Neoaplectana spp. (Nematoda) for the control of insect pests. Proc. First int. Colloq. Invertebr. Path. pp. 250–254.Google Scholar
Carolin, V. M. Jr., and Coulter, W. K.. 1972. Sampling populations of western spruce budworm and predicting defoliation on Douglas-fir in eastern Oregon. U.S. Dep. Agric. For. Serv. Res. Pap. PNW-149. 38 pp.Google Scholar
Furniss, R. L. and Carolin, V. M.. 1977. Western Forest Insects. U.S. Dep. Agric. Misc. Publ. 1339. U.S. Govt. Printing Office, Washington, D.C.653 pp.Google Scholar
Gaugler, R. The biological control potential of neoaplectanid nematodes. J. Nematol. In press.Google Scholar
Hara, A. H., Lindegren, J. E., and Kaya, H. K.. 1981. Monoxenic mass production of the entomogenous nematode, Neoaplectana carpocapsae Weiser, on dog-food agar medium. USDA, SEA, Western Region, Adv. Agric. Tech. AAT-W-16. 8 pp.Google Scholar
Johnson, P. C. and Denton, R.E.. 1975. Outbreaks of the western spruce budworm in the American Northern Rocky Mountain area from 1922 through 1971. U.S. Dep. Agric. For. Serv. Gen. Tech. Rep. INT-20. 144 pp.Google Scholar
Lindegren, J. E., Dibble, J. E., Curtis, C. E., Yamashita, T. T., and Romero, E.. 1981. Compatibility of NOW parasite with some commercial sprayers. Calif. Agric. 35(3 and 4): 16–17.Google Scholar
Luck, R. F. and Scriven, G. T.. 1976. The elm leaf beetle, Pyrrhalta luteola, in southern California: Its pattern of increase and its control by introduced parasites. Environ. Ent. 5: 409–416.CrossRefGoogle Scholar
Moore, G. E. 1973. Moisture requirements of the DD-136 strain of Neoaplectana carpocapsae (Nematoda; Rhabditida) as related to host infection. Exp. Parasitol. 33: 207–211.Google Scholar
Poinar, G. O. Jr., 1979. Nematodes for Biological Control of Insects. CRC Press, Boca Raton, FL. 277 PP.Google Scholar
Smith, P. D., Davis, C. S., and Brown, L. R.. 1975. Elm leaf beetle. Coop. Extension Univ. Calif. 75-LE2238. 3 pp.Google Scholar
Webster, J. M. 1973. Manipulation of environment to facilitate use of nematodes in biocontrol of insects. Exp. Parasitol. 33: 197–206.CrossRefGoogle ScholarPubMed