Hostname: page-component-848d4c4894-tn8tq Total loading time: 0 Render date: 2024-06-20T09:04:41.535Z Has data issue: false hasContentIssue false
  • English
  • Français

DEVELOPMENT OF SAMPLING TECHNIQUES FOR THE SPRUCE BUDMOTH, ZEIRAPHERA CANADENSIS MUT. AND FREE. (LEPIDOPTERA: TORTRICIDAE)

Published online by Cambridge University Press:  31 May 2012

Jean J. Turgeon  and
Jacques Régnière
Jean J. Turgeon
Affiliation:
Forest Pest Management Institute, Canadian Forestry Service, PO Box 490, Sault Ste. Marie, Ontario, Canada P6A 5M7
Jacques Régnière
Affiliation:
Laurentian Forestry Centre, Canadian Forestry Service, PO Box 3800, Ste-Foy, Quebec, Canada G1V 4C7
Get access Rights & Permissions [Opens in a new window]

Abstract

The spatial and statistical distribution of Zeiraphera canadensis Mut. and Free. (spruce budmoth) within the crown of white spruce (< 4 m high) was investigated in northern New Brunswick. A 15-cm branch segment, measured distally from the scales of the branch’s apical growth and taken from the upper one-third of the crown, is considered an adequate sample unit for density estimates of spruce budmoth eggs and larvae. Sample sizes required to estimate spruce budmoth larval densities with given levels of precision and confidence were determined. A sequential sampling plan to classify spruce budmoth populations as low or high (potentially leading to growth reduction and deformed leaders in white spruce) was also developed.

Résumé

La distribution spatiale et statistique de la tordeuse de l’épinette, Zeiraphera canadensis Mut. and Free., dans la cîme d’épinettes blanches (< 4 m), a été étudiée dans le nord du Nouveau-Brunswick. Ces travaux ont permis de déterminer qu’un segment de branche de 15 cm, mesuré à partir des écailles de la pousse apicale vers la base et prélevée dans le 1/3 supérieur de la couronne, est une unité d’échantillonnage adéquate pour l’estimation de la densité des populations d’oeufs ou de larves de cet insecte. Le nombre d’échantillons nécessaires pour l’estimation des densités larvaires à certains niveaux de précision et de confiance a été déterminé. Un plan d’échantillonnage séquentiel permettant de classer les populations de la tordeuse de l’épinette comme faibles ou élevées (pouvant causer une perte de croissance ou la déformation de la flèche chez l’épinette blanche) a aussi été élaboré.

Type
Articles
Information
The Canadian Entomologist , Volume 119 , Issue 3 , March 1987 , pp. 239 - 249
Copyright
Copyright © Entomological Society of Canada 1987

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

Iwao, S. 1968. A regression method for analysing the aggregation pattern in animal populations. Res. Popul. Ecol. 10: 1–20.CrossRefGoogle Scholar
Iwao, S. 1975. A new method of sequential sampling to classify populations relative to a critical density. Res. Popul. Ecol. 16: 281–288.CrossRefGoogle Scholar
Iwao, S., and Kuno, E.. 1968. Use of the regression of mean crowding and mean density for estimating sample size and the transformation of data for the analysis of variance. Res. Popul. Ecol. 10: 210–214.CrossRefGoogle Scholar
Lloyd, M. 1967. Mean crowding. J. Anim. Ecol. 36: 1–30.CrossRefGoogle Scholar
MacAndrews, A.H. 1927. Biological notes on Zeiraphera fortunana Kft. and ratzerburgiana Ratz., (Eucosmidae, Lepidoptera). Can. Ent. 59: 27–29.CrossRefGoogle Scholar
Magasi, L. 1984. Forest pest conditions in the Maritimes in 1983. Can. For. Serv. Inf. Rep. M-X-149. 49 pp.Google Scholar
Nyrop, J.P., and Simmons, G.A.. 1984. Errors incurred when using Iwao's sequential decision rule in insect sampling. Environ. Ent. 13: 1459–1465.CrossRefGoogle Scholar
Pilon, J.G. 1965. Bionomics of the spruce budmoth Zeiraphera ratzerburgiana (Ratz.), (Lepidoptera: Olethreutidae). Phytoprotection 58: 84–91.Google Scholar
Régnière, J., and Sanders, C.J.. 1983. Optimal sample size for the estimation of spruce budworm (Lepidoptera: Tortricidae) populations on balsam fir and white spruce. Can. Ent. 115: 1621–1626.CrossRefGoogle Scholar
Shaw, P.B., Kido, H., Flaherty, D.L., Barnett, W.W., and Andris, H.L.. 1983. Spatial distribution of infestations of Platynota stultana (Lepidoptera: Tortricidae) in California vineyards and a plan for sequential sampling. Environ. Ent. 12: 60–65.CrossRefGoogle Scholar
Shepherd, R.F. 1985. Pest management of Douglas-Fir tussock moth: estimating larval density by sequential sampling. Can. Ent. 117: 1111–1115.CrossRefGoogle Scholar
Shepherd, R.F., Otvos, I.S., and Chorney, R.J.. 1984. Pest management of Douglas-fir tussock moth (Lepidoptera: Lymantriidae): a sequential sampling method to determine egg mass density. Can. Ent. 116: 1041–1049.CrossRefGoogle Scholar
Snedecor, G.W., and Cochran, W.G.. 1967. Statistical methods, 6th edition. Iowa State Univ. Press, Ames, Iowa. xiv + 593 pp.Google Scholar
Turgeon, J.J. 1985. Life cycle and behavior of the spruce budmoth, Zeiraphera canadensis (Lepidoptera: Olethreutidae), in New Brunswick. Can. Ent. 117: 1239–1247.CrossRefGoogle Scholar
Turgeon, J.J. 1986. The phenological relationship between the larval development of the spruce budmoth, Zeiraphera canadensis (Lepidoptera: Olethreutidae), and white spruce in northern New Brunswick. Can. Ent. 118: 345–350.CrossRefGoogle Scholar