Hostname: page-component-848d4c4894-v5vhk Total loading time: 0 Render date: 2024-06-16T16:16:55.051Z Has data issue: false hasContentIssue false
  • English
  • Français

REQUIRED SAMPLE SIZE FOR EARLY INSTAR LARVAE OF SPRUCE BUDWORM, CHORISTONEURA FUMIFERANA (LEPIDOPTERA: TORTRICIDAE), IN NEWFOUNDLAND

Published online by Cambridge University Press:  31 May 2012

E. J. Dobesberger  and
K. P. Lim
E. J. Dobesberger
Affiliation:
Newfoundland Forest Research Centre, Canadian Forestry Service, St. John's, Newfoundland A1C 5X8
K. P. Lim
Affiliation:
Newfoundland Forest Research Centre, Canadian Forestry Service, St. John's, Newfoundland A1C 5X8
Get access Rights & Permissions [Opens in a new window]

Abstract

Required sample size was determined for early instar (2nd to 4th instar) larvae of spruce budworm, Choristoneura fumiferana (Clem.). Larval counts on mid-crown 45 cm branch tips and whole branches of balsam fir, Abies balsamea (L.) Mill., were described in terms of the negative binomial distribution. The values of common k for the branch tip and whole branch sample units were 1.550 and 1.636, respectively. The required sample size at densities greater than or equal to one appears feasible. It is recommended that the 45 cm branch tip be used to estimate population density of early instar larvae in Newfoundland.

Résumé

La taille requise de l'échantillon pour les jeunes stades larvaires (2e à 4e) de la tordeuse des bourgeons de l'épinette, Choristoneura fumiferana (Clem.), a été déterminée. Les nombres de larves comptées au milieu de la cime sur les 45 derniers centimètres des branches et sur des branches entières du sapin baumier, Abies balsamea (L.) Mill., ont été exprimés suivant une distribution binominale négative. Les valeurs du k commun pour les échantillons de bouts de branches et de branches entières sont de 1,550 et 1,636 respectivement. Obtenir un échantillon de taille requise à des densités égales ou supérieures à 1 semble réalisable. Il est recommandé d'utiliser les 45 derniers centimètres des branches pour estimer la densité des populations des larves aux premiers stades à Terre-Neuve.

Type
Articles
Information
The Canadian Entomologist , Volume 115 , Issue 11 , November 1983 , pp. 1523 - 1527
Copyright
Copyright © Entomological Society of Canada 1983

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

Anscombe, F. J. 1949. The statistical analysis of insect counts based on the negative binomial distribution. Biometrics 5: 165–173.CrossRefGoogle Scholar
Bliss, C. I. 1958. The analysis of insect counts as negative binomial distributions. Proc. int. Congr. Ent. 10: 1015–1032.Google Scholar
Bliss, C. I. and Fisher, R. A.. 1953. Fitting the negative binomial distribution to biological data and note on the efficient fitting of the negative binomial. Biometrics 9: 176–200.CrossRefGoogle Scholar
Bliss, C. I. and Owen, A. R. G.. 1958. Negative binomial distributions with a common k. Biometrika 45: 37–58.CrossRefGoogle Scholar
Clarke, L. J., Banfield, E. C., Sutton, W. J., Stone, D. M., O'Brien, D. S.,Pardy, K. E., and Carew, G. C.. 1980. 1979 Annual district report forest insect and disease survey Newfoundland. Environ. Can., Can. For. Serv., Nfld. For. Res. Centre, Inf. Rep. N-X-183. 68 pp. St. John's, Nfld.Google Scholar
Clarke, L. J., Banfield, E. C., Sutton, W. J., Stone, D. M., O'Brien, D. S.,Pardy, K. E., and Carew, G. C.. 1981. 1980 Annual district report forest insect and disease survey Newfoundland. Environ. Can., Can. For. Serv., Nfld. For. Res. Centre, Inf. Rep. N-X-195. 65 pp. St. John's, Nfld.Google Scholar
Crummey, H. R. and Otvos, I. S.. 1980. Biology and habits of the spruce budworm. Choristoneura fumiferana (Lepidoptera: Tortricidae) in Newfoundland. Environ. Can., Can. For. Serv., Nfld. For. Res. Centre, Inf. Rep. N-X-181. 33 pp. St. John's, Nfld.Google Scholar
Hudak, J. and Raske, A. G.. 1981. Review of the spruce budworm outbreak in Newfoundland – Its control and forest management implications. Environ. Can., Can. For. Serv., Nfld. For. Res. Centre, Inf. Rep. N-X-181. 280 pp. St. John's, Nfld.Google Scholar
Karandinos, M. G. 1976. Optimum sample size and comments on some published formulae. Bull. ent. Soc. Am. 22: 417–421.Google Scholar
Lefkovitch, L. P. 1966. An index of spatial distribution. Researches Popul. Ecol. Kyoto Univ. 8: 89–92.Google Scholar
Miller, C. A., Kettela, E. G., and McDougall, G. A.. 1972. Sampling methods in spruce budworm surveys. Dep. Environ., Can. For. Serv., Ottawa, Ont. Bi-mon. Res. Notes 25: 31.Google Scholar
Morris, R. F. 1954. A sequential sampling technique for spruce budworm egg surveys. Can. J. Zool. 32: 283–301.CrossRefGoogle Scholar
Morris, R. F. 1955. The development of sampling techniques for forest insect defoliators, with particular reference to the spruce budworm. Can. J. Zool. 33: 107–223.CrossRefGoogle Scholar
Otvos, I. S. and Moody, B. H.. 1978. The spruce budworm in Newfoundland: History, status and control. Environ. Can., For. Serv., Nfld. For. Res. Centre, Inf. Rep. N-X-150. 76 pp. St. John's, Nfld.Google Scholar
Ruesink, W. G. 1980. Introduction to sampling theory. pp. 61–78in Kogan, M. and Herzog, D. C. (Eds.), Sampling Methods in Soybean Entomology. Springer-Verlag, New York.CrossRefGoogle Scholar
Sanders, C. J. 1980. A summary of current techniques used for sampling spruce budworm populations and estimating defoliation in eastern Canada. Can. For. Serv., Sault Ste. Marie, Ont. Rep. O-X-306. 33 pp. + append.Google Scholar
Southwood, T. R. E. 1978. Ecological Methods: with particular reference to the study of insect populations. Chapman and Hall, University Printing House, Cambridge. 542 pp.Google Scholar
Waters, W. E. 1955. Sequential sampling in forest insect surveys. For. Sci. 1: 68–79.Google Scholar
Waters, W. E. 1959. A quantitative measure of aggregation in insects. J. econ. Ent. 52: 1180–1184.Google Scholar
Waters, W. E. and Henson, W. R.. 1959. Some sampling attributes of the negative binomial distribution with particular reference to forest insects. For. Sci. 5: 397–412.Google Scholar