Hostname: page-component-848d4c4894-tn8tq Total loading time: 0 Render date: 2024-06-17T06:23:02.519Z Has data issue: false hasContentIssue false
  • English
  • Français

WEEVIL PHYSIOLOGY CONTROLS THE FEEDING RATES OF PISSODES STROBI ON PICEA SITCHENSIS

Published online by Cambridge University Press:  31 May 2012

T.S. Sahota ,
J.F. Manville ,
F.G. Peet ,
A. Ibaraki  and
E. White
T.S. Sahota
Affiliation:
Pacific Forestry Centre, Canadian Forest Service, Natural Resources Canada, 506 West Burnside Road, Victoria, British Columbia, Canada V8Z 1M5
J.F. Manville
Affiliation:
Pacific Forestry Centre, Canadian Forest Service, Natural Resources Canada, 506 West Burnside Road, Victoria, British Columbia, Canada V8Z 1M5
F.G. Peet
Affiliation:
Pacific Forestry Centre, Canadian Forest Service, Natural Resources Canada, 506 West Burnside Road, Victoria, British Columbia, Canada V8Z 1M5
A. Ibaraki
Affiliation:
Pacific Forestry Centre, Canadian Forest Service, Natural Resources Canada, 506 West Burnside Road, Victoria, British Columbia, Canada V8Z 1M5
E. White
Affiliation:
Pacific Forestry Centre, Canadian Forest Service, Natural Resources Canada, 506 West Burnside Road, Victoria, British Columbia, Canada V8Z 1M5
Get access Rights & Permissions [Opens in a new window]

Abstract

The number and volume of feeding and oviposition holes made by female white pine weevils, Pissodes strobi (Peck), on lateral branches of resistant and susceptible Sitka spruce, Picea sitchensis (Bong.) Carr., were determined. When all possible effects of weevil reproduction on feeding rates were eliminated, by using reproductively noncompetent weevils, there was no significant difference in the number of feeding holes made on the two host types. In addition, the volume of feeding holes was unaffected by host type on day 1. In contrast, when differential reproductive activity was induced by treating weevils with juvenile hormone, and the host factor was eliminated, by using only the susceptible host, higher reproductive activity was accompanied by a significantly larger number of feeding holes. Hormone treatment also led to an increase in the volume of feeding holes in the absence of any influence of host factors. Results are interpreted in relation to the direct effects of host resistance on feeding rates (which determine host acceptability) and the indirect effects of host resistance on feeding rates mediated through the physiology of the weevils (which determine host suitability). Our results show that both the number of feeding holes and their volume are determined primarily through weevil metabolism.

Résumé

Le nombre et le volume des trous d’alimentation et de ponte creusés par les femelles du Charançon du pin blanc Pissodes strobi (Peck) ont été déterminés sur des branches latérales d’épinettes de Sitka Picea sitchensis (Bong.) Carr., résistantes ou sensibles. Après élimination de tous les effets possibles de la reproduction des charançons sur les taux d’alimentation, en utilisant des charançons incapables de se reproduire, nous n’avons trouvé aucune différence significative entre les deux types d’hôtes quant au nombre de trous d’alimentation. De plus, le volume des trous d’alimentation n’était pas affecté par le type d’hôte au jour 1. En revanche, en provoquant une activité reproductrice différentielle par traitement des charançons à l’hormone juvénile et en éliminant le facteur hôte par utilisation exclusive d’arbres sensibles, l’activité reproductrice plus intense s’accompagnait d’un nombre significativement plus élevé de trous d’alimentation. Le traitement à l’hormone a également entraîné une augmentation du volume des trous d’alimentation en l’absence de toute influence des facteurs reliés à l’hôte. Les résultats sont examinés en fonction des effets directs de la résistance de l’hôte sur les taux d’alimentation (qui déterminent l’acceptabilité de l’hôte) et des effets indirects de la résistance de l’hôte sur les taux d’alimentation régis par la physiologie des charançons (qui déterminent si l’hôte est approprié). Nos résultats démontrent que le volume des trous d’alimentation aussi bien que leur nombre sont principalement fonction du métabolisme des charançons.

[Traduit par la Rédaction]

Type
Articles
Information
The Canadian Entomologist , Volume 130 , Issue 3 , June 1998 , pp. 305 - 314
Copyright
Copyright © Entomological Society of Canada 1998

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

Alfaro, R.I., and Borden, J.H.. 1982. Host selection by the white pine weevil, Pissodes strobi Peck: feeding bioassays using host and non-host plants. Canadian Journal of Forest Research 12: 64–70.CrossRefGoogle Scholar
Alfaro, R.I., and Ying, C.C.. 1990. Levels of Sitka spruce weevil, Pissodes strobi (Peck), damage among Sitka spruce provenances and families near Sayward, British Columbia. The Canadian Entomologist 122: 607–615.CrossRefGoogle Scholar
Brooks, J.E., and Borden, J.H.. 1992. Development of a resistance index for Sitka spruce against the white pine weevil Pissodes strobi Peck. Canadian Forest Service and British Columbia Ministry of Forests FRDA Report 180.Google Scholar
Gara, R.I., and Wood, J.O. 1989. Termination of reproductive diapause in the Sitka spruce weevil, Pissodes strobi (Peck) (Coleoptera: Curculionidae) in western Washington. Journal of Applied Entomology 108: 156–163.CrossRefGoogle Scholar
Harman, D.M. 1975. Movements of individually marked white pine weevils, Pissodes strobi. Environmental Entomology 4: 120–124.CrossRefGoogle Scholar
King, J.N. 1994. Delivering durable resistant Sitka spruce for plantations. pp. 134–149in Alfaro, R.I., Kiss, G., and Fraser, G.R. (Eds.), The White Pine Weevil: Biology, Damage and Management. Canadian Forest Service and British Columbia Ministry of Forests FRDA Report 226.Google Scholar
Kiss, G.K., and Yanchuk, A.D.. 1991. Preliminary evaluation of genetic variation of weevil resistance in interior spruce in British Columbia. Canadian Journal of Forest Research 21: 230–234.CrossRefGoogle Scholar
Leal, I., White, E.E., Sahota, T.S., and Manville, J.F.. 1997. Differential expression of the vitellogenin gene in the spruce terminal weevil feeding on resistant versus susceptible host trees. Insect Biochemistry and Molecular Biology 27: 569–575.CrossRefGoogle ScholarPubMed
Painter, R.H. 1968. Insect Resistance in Crop Plants. The University Press of Kansas, Lawrence, Kansas.Google Scholar
Sahota, T.S., Manville, J.F., and White, E.. 1994. Interaction between Sitka spruce weevil and its host Picea sitchensis: a new mechanism for resistance. The Canadian Entomologist 126: 1067–1074.CrossRefGoogle Scholar
SAS Institute Inc. 1985. SAS user's guide: statistics, version 5 edition. SAS Institute Inc., Cary, N.C.956 pp.Google Scholar
Simpson, S.J., and Simpson, C.L.. 1990. The mechanisms of nutritional compensation by phytophagous insects. pp. 111–160in Bernays, E.A. (Ed.), Insect-Plant Interactions. CRC Press, Boca Raton, Florida.Google Scholar
Stroh, R.C., and Gerhold, H.D.. 1965. Eastern white pine characteristics related to weevil feeding. Silvae Genetica 14: 160–169.Google Scholar
Taylor, A.E., and Mann, W.R. 1972. Advanced Calculus. Xerox College Publishing, Lexington, Massachusetts.Google Scholar
Tomlin, E.S., and Borden, J.H.. 1994. Development of a multicomponent index for Sitka spruce resistance to the white pine weevil. pp. 117–133in Alfaro, R.I., Kiss, G., and Fraser, G.R. (Eds.), The White Pine Weevil: Biology, Damage and Management. Canadian Forest Service and British Columbia Ministry of Forests FRDA Report 226.Google Scholar
Tomlin, E.S., and Borden, J.H.. 1996. Feeding responses of the white pine weevil, Pissodes strobi (Peck), in relation to host resistance in British Columbia. The Canadian Entomologist 128: 539–549.CrossRefGoogle Scholar
Wallace, D.R., and Sullivan, C.R.. 1985. The white pine weevil, Pissodes strobi (Coleoptera: curculionidae): a review emphasizing behaviour and development in relation to physical factors. Proceedings of the Entomological Society of Ontario (Supplement) 116: 39–62.Google Scholar
Ying, C.C. 1991. Genetic resistance to the white pine weevil in Sitka spruce. British Columbia Ministry of Forests Research Note 106: 1–17.Google Scholar