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MONITORING POPULATION LEVELS OF EIGHT SPECIES OF NOCTUIDS WITH SEX-ATTRACTANT TRAPS IN SOUTHERN ALBERTA, 1978–1983: CONGRUENCY OF YEAR-TO-YEAR FLUCTUATIONS IN INTRASPECIFIC DENSITY SHOWN BY SUBSETS OF MONITORING SITES

Published online by Cambridge University Press:  31 May 2012

J.R. Byers ,
D.L. Struble  and
G.B. Schaalje
J.R. Byers
Affiliation:
Agriculture Canada Research Station, Lethbridge, Alberta, Canada T1J 4B1
D.L. Struble
Affiliation:
Agriculture Canada Research Station, Lethbridge, Alberta, Canada T1J 4B1
G.B. Schaalje
Affiliation:
Agriculture Canada Research Station, Lethbridge, Alberta, Canada T1J 4B1
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Abstract

The abundance levels of eight species of cutworms and army worms were monitored with sex-attractant traps at 81 locations in a 13 000-km2 area of southern Alberta from 1978 to 1983. Year-to-year change in population levels could be consistently detected by monitoring at a relatively small number of locations. For all species, subsets of selected locations along transects, or random subsets of as few as five locations, showed year-to-year fluctuations in mean catch per trap that were similar in pattern to those of the whole monitored area. The results indicate that long-term surveillance monitoring of pest species of cutworms and armyworms to detect year-to-year population changes, and long-term trends, is feasible in terms of both the resource requirements and reliability of the relative population estimates.

Résumé

De 1978 à 1983, on a surveillé les populations de huit espèces de vers-gris et de légionnaires à l’aide de pièges sexuels répartis en 81 points sur une superficie de 13 000 km2 dans le sud de l’Alberta. Il est possible de mesurer les variations de populations d’une année à l’autre en effectuant une surveillance en un nombre d’endroits relativement faible. Pour toutes les espèces, des sous-ensembles de points donnés long des transects ou des sous-ensembles aléatoires restreints (aussi peu que cinq endroits) ont affiché d’une année à l’autre des fluctuations du nombre moyen d’insectes par piège comparables à celles observées dans toute la région à l’étude. Il semble donc qu’une surveillance à long terme des espèces de vers-gris et de légionnaires dommageables aux cultures afin de déceler les fluctuations des populations d’une année à l’autre et les tendances à long terme soit faisable sur le plan tant des besoins en ressources que de la fiabilité des résultats obtenus.

Type
Articles
Information
The Canadian Entomologist , Volume 120 , Issue 12 , December 1988 , pp. 1071 - 1078
Copyright
Copyright © Entomological Society of Canada 1988

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References

Ayre, G.L. 1985. Cold tolerance of Pseudaletia unipuncta and Peridroma saucia (Lepidoptera). Can. Ent. 117: 1055–1060.CrossRefGoogle Scholar
Ayre, G.L., Turnock, W.J., and Struble, D.L.. 1982. Spatial and temporal variability in sex attractant trap catches of Scotogramma trifolii (Lepidoptera: Noctuidae) in relation to its biology in Manitoba. Can. Ent. 114: 145–154.CrossRefGoogle Scholar
Byers, J.R., and Struble, D.L.. 1987. Monitoring population levels of eight species of noctuids with sex-attractant traps in southern Alberta, 1978–1983: Specificity of attractants and effect of target species abundance. Can. Ent. 119: 541–556.CrossRefGoogle Scholar
Byers, J.R., Struble, D.L., and Schaalje, G.B.. 1987. Monitoring population levels of eight species of noctuids with sex-attractant traps in southern Alberta, 1978–1983: Consistency of trap catches and precision of population estimates. Can. Ent. 119: 557–566.CrossRefGoogle Scholar
Dempster, J.P. 1983. The natural control of populations of butterflies and moths. Biol. Rev. 58: 461–481.CrossRefGoogle Scholar
Harris, J.W.E., Dawson, A.F., and Brown, R.G.. 1981 a. Selecting sampling points for larvae of western spruce budworm, Choristoneura occidentalis (Lepidoptera: Tortricidae), from survey records in British Columbia. J. ent. Soc. B.C. 78: 7–9.Google Scholar
Harris, J.W.E., Dawson, A.F., and Brown, R.G.. 1981 b. Consequences of eliminating aerial access samples from surveys of forest defoliators in coastal British Columbia. J. ent. Soc. B.C. 78: 10–13.Google Scholar
Lamb, R.J., Turnock, W.J., and Hayhoe, H.N.. 1985. Winter survival and outbreaks of bertha armyworm, Mamestra configurata (Lepidoptera: Noctuidae), on canola. Can. Ent. 117: 727–736.CrossRefGoogle Scholar
Mason, R.R., and Luck, R.F.. 1978. Population growth and regulation. pp. 41–47in Brooks, M.H., Stark, R.W., and Campbell, R.W. (Eds.), The Douglas-fir tussock moth: a synthesis. U.S.D.A. For. Serv. Tech. Bull. 1585.Google Scholar
Meszaros, Z., Madaras, K.M., and Herzig, B.. 1979. Population dynamics of noctuids in Hungary. I. Scotia segetum Schiff., S. exclamationis L., Amathes c-nigrum L. Acta Phytopath. Acad. Sci. Hung. 14: 493–501.Google Scholar
Miyashita, K. 1963. Outbreaks and population fluctuations of insects, with special reference to agricultural insect pests in Japan. Bull. Natl. Inst. Agric. Sci. Ser. C 15: 99–167.Google Scholar
Pollard, E. 1984. Fluctuations in the abundance of butterflies, 1976–82. Ecol. Ent. 9: 179–188.CrossRefGoogle Scholar
Royama, T. 1984. Population dynamics of the spruce budworm Choristoneura fumiferana. Ecol. Monographs 54: 429–462.CrossRefGoogle Scholar
Shepherd, R.F., Gray, T.G., Chorney, R.J., and Daterman, G.E.. 1985. Pest management of Douglas-fir tussock moth, Orgyia pseudotsugata (Lepidoptera: Lymantriidae): monitoring endemic populations with pheromone traps to detect incipient outbreaks. Can. Ent. 117: 839–848.CrossRefGoogle Scholar
Taylor, L.R. 1979. The Rothamsted insect survey — an approach to the theory and practice of synoptic pest forecasting in agriculture. pp. 148–185in Rabb, R.L., and Kennedy, G.G. (Eds.), Movement of Highly Mobile Insects: Concepts and Methodology in Research. North Carolina State University Press.Google Scholar
Taylor, L.R. 1986. Synoptic dynamics, migration and the Rothamsted insect survey. J. Anim. Ecol. 55: 1–38.CrossRefGoogle Scholar
Taylor, L.R., and Taylor, R.A.J.. 1977. Aggregation, migration and population mechanisms. Nature 265: 415–421.CrossRefGoogle Scholar
Varga, Z., and Uherkovich, A.. 1974. Die Anwendung der Lichtfallen in der okologischen Landschaftsforschung. Folia Ent. Hung. Suppl. 27: 159–171.Google Scholar