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Factors Influencing the Orientation and Rates of Activity of Dendroctonus ponderosae Hopkins (Coleoptera: Scolytidae)1

Published online by Cambridge University Press:  31 May 2012

R. F. Shepherd
R. F. Shepherd
Affiliation:
Department of Forestry of Canada, Forest Research Laboratory, Calgary, Alberta
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Abstract

The tactic and kinetic responses of adult Dendroctonus ponderosae Hopkins were studied under varying conditions of light, temperature, humidity, gravity, and with different visual forms. Newly emerged adult Dendroctonus ponderosae Hopk. were attracted by high light intensity and utilized spot sources of light and surrounding objects, but not polarized light, for orientation. Flying adults were positively phototactic unless warmed above 35 °C; egg-laying adults were negatively phototactic. High temperatures and light intensities increased the frequency of flights. The beetles were negatively geotropic but this could be masked by the attraction to light. Dark objects on a light background were attractive; the size of the object was important while the shape was not.

Temperature influenced orientation to some extent but its influence on rate of activity was far more pronounced; rate of walk followed a linear relationship with temperature. Humidity also affected orientation and rate of walk to some extent, although its effect was usually masked by other environmental factors.

Type
Articles
Information
The Canadian Entomologist , Volume 98 , Issue 5 , May 1966 , pp. 507 - 518
Copyright
Copyright © Entomological Society of Canada 1966

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References

Atkins, M. D. 1961. A study of the flight of the Douglas-fir beetle, Dendroctonus pseudotsugae Hopk., (Coleoptera : Scolytidae). IV. Flight capacity. Canad. Ent. 93: 467–474.CrossRefGoogle Scholar
Bentley, E. W. 1944. The biology and behaviour of Ptinus tectus Boie (Coleoptera, Ptinidae), a pest of stored products. V. Humidity reactions. J. exp. Biol. 20: 152–158.CrossRefGoogle Scholar
Chararas, C. 1959. L'influence des conditions climatiques sur l'évolution des scolytides. Compte rendu de plusieurs années d'expérimentation dans les fôrets de Haute-Savoie. Ann. Ec. Eaux. For. Nancy 16: 135–167.Google Scholar
Fraenkel, G. S., and Gunn, D. L.. 1940. The orientation of animals. Oxford University Press, London.Google Scholar
Gunn, D. L., and Cosway, C. A.. 1938. The temperature and humidity relations of the cockroach. V. Humidity preference. J. exp. Biol. 15: 555–563.CrossRefGoogle Scholar
Graham, K. 1959. Release by flight exercise of a chemotropic response from photopositive domination in a scolytid beetle. Nature, Lond. 184: 283–284.CrossRefGoogle Scholar
Graham, K. 1961. Air-swallowing: a mechanism in photic reversal of the beetle Trypodendron. Nature, Lond. 191: 519–520.CrossRefGoogle Scholar
Hopping, G. R. 1942. Apparent negative geotropism in the Douglas fir bark beetle. Canad. Ent. 74: 205.CrossRefGoogle Scholar
Hopping, G. R., and Beall, G.. 1948. The relation of diameter of lodgepole pine to incidence of attack by the bark beetle Dendroctonus monticolae Hopkins. For. Chron. 24: 141–145.CrossRefGoogle Scholar
Jack, R. W., and Williams, W. L.. 1937. The effect of temperature on the reaction of Glossina morsitans, Westw., to light. Bull. ent. Res. 28: 499–503.CrossRefGoogle Scholar
Mainland, D., Herrera, L. and Sutcliffe, M. I.. 1956. Statistical tables for use with binomial samples—contingency tests, confidence limits, and sample size estimates. Dept. Medical Statistics, N.Y. Univ. College Medicine, 83 pp.Google Scholar
McMullen, L. H., and Atkins, M. D.. 1962. On the flight and host selection of the Douglas-fir beetle, Dendroctonus pseudotsugae Hopk. (Coleoptera : Scolytidae). Canad. Ent. 94: 1309–1325.CrossRefGoogle Scholar
Reid, R. W. 1958. Internal changes in the female mountain pine beetle, Dendroctonus monticolae Hopk., associated with egg laying and flight. Canad. Ent. 90: 464–467.CrossRefGoogle Scholar
Reid, R. W. 1962a. Biology of the mountain pine beetle, Dendroctonus monticolae Hopkins, in the East Kootenay Region of British Columbia. I. Life Cycle, Brood Development, and Flight Periods. Canad. Ent. 94: 531–538.CrossRefGoogle Scholar
Reid, R. W. 1962b. Biology of the mountain pine beetle, Dendroctonus monticolae Hopkins, in the East Kootenay Region of British Columbia. II. Behaviour in the host, fecundity, and internal changes in the female. Canad. Ent. 94: 605–613.CrossRefGoogle Scholar
Reid, R. W. 1963. Biology of the mountain pine beetle, Dendroctonus monticolae Hopkins, in the East Kootenay Region of British Columbia. III. Interaction between the beetle and its host, with emphasis on brood mortality and survival. Canad. Ent. 95: 225–238.CrossRefGoogle Scholar
Rudinsky, J. A., and Vité, J. P.. 1956. Effects of temperature upon the activity and behaviour of the Douglas fir beetle. For. Sci. 2: 258–267.Google Scholar
Shepherd, R. F. 1961. Low-angle walls to eliminate edge effects in behaviour studies of Scolytidae. Can. Dep. For., For. Ent. and Path. Branch, Bi-mon. Prog. Rep. 17 (6): 2–3.Google Scholar
Shepherd, R. F. 1965. Distribution of attacks by Dendroctonus ponderosae Hopk. on Pinus contorta Dougl. var. latifolia Engelm. Canad. Ent. 97: 207–215.CrossRefGoogle Scholar
Siegel, S. 1956. Nonparametric statistics for the behavioral sciences. McGraw-Hill, New York and London.Google Scholar
Smerka, E. P., and Hodson, A. C.. 1959. Some humidity and light reactions of the granary weevil, Sitophilus granarius (L.) (Coleoptera : Curculionidae). Canad. Ent. 91: 784–797.CrossRefGoogle Scholar
Walker, H. M., and Lev, J.. 1953. Statistical inference. Henry Holt, New York.CrossRefGoogle Scholar
Wellington, W. C. 1948. The light reactions of the spruce budworm, Choristoneura fumiferana Clemens (Lepidoptera : Tortricidae). Canad. Ent. 80: 56–82.CrossRefGoogle Scholar
Wellington, W. C. 1960. The need for direct observation of behaviour in studies of temperature effects on light reactions. Canad. Ent. 92: 438–448.CrossRefGoogle Scholar
Wellington, W. C., Sullivan, C. R. and Green, G. W.. 1951. Polarized light and body temperature level as orientation factors in the light reactions of some Hymenopterous and Lepidopterous larvae. Canad. J. Zool. 29: 339–351.CrossRefGoogle Scholar
Willis, E. P., and Roth, L. M.. 1950. Humidity reactions of Tribolium castaneum (Herbst.). J. exp. Biol. 115: 561–588.Google Scholar