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Publications by A.F. Hedlin

33 records.

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Douglas-fir cone moth and cone gall midge: relation to damage and prolonged diapause to seed cone abundance in British Columbia
Miller, G.E.; Hedlin, A.F.
Year: 1984    Catalog ID: 2277
Available from: Pacific Forestry Centre
CFS Availability: Print (free)
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Chemical lure for male Douglas-fir cone moth, Barbara colfaxiana (Lepidoptera: Olethreutidae)
Hedlin, A.F.; Weatherston, J.; Ruth, D.S.; Miller, G.E.
Year: 1983    Catalog ID: 2269
Available from: Pacific Forestry Centre
CFS Availability: Print (free)
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Induction of prolonged diapause in Barbara colfaxiana (Lepidoptera: Olethreutidae): correlations with cone crops and weather
Hedlin, A.F.; Miller, G.E.; Ruth, D.S.
Year: 1982    Catalog ID: 2178
Available from: Pacific Forestry Centre
CFS Availability: Print (free)
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Cone and seed insects of North American conifers
Hedlin, A.F.; Yates, H.O., III; Tovar, D.C.; Ebel, B.H.; Koerber, T.W.; Merkel, E.P.
Year: 1980    Catalog ID: 2026
Available from: Pacific Forestry Centre
CFS Availability: PDF (download)
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Observations on a twigminer, Argyresthia pseudotsuga Freeman (Lepidoptera: Yponomeutidae) in Douglas-fir seed orchards
Ruth, D.S.; Hedlin, A.F.
Year: 1979    Catalog ID: 1818
Available from: Pacific Forestry Centre
CFS Availability: Not available through the CFS (click for more information).
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Examination of Douglas-fir clones for differences in susceptibility to damage by cone and seed insects
Hedlin, A.F.; Ruth, D.S.
Year: 1978    Catalog ID: 1802
Available from: Pacific Forestry Centre
CFS Availability: Not available through the CFS (click for more information).
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Comparison of germinability of seed from insect-infested and uninfested cones
Hedlin, A.F.; Ruth, D.S.
Year: 1977    Catalog ID: 1604
Available from: Pacific Forestry Centre
CFS Availability: PDF (download)
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Chemical and field studies on the sex pheromones of the cone and seed moths Barbara colfaxiana and Laspeyresia youngana
Weatherston, J.; Hedlin, A.F.; Ruth, D.S.; MacDonald, L.M.; Leznoff, C.C.; Fyles, T.M.
Year: 1977    Catalog ID: 1629
Available from: Pacific Forestry Centre
CFS Availability: Not available through the CFS (click for more information).

Available from the Journal's Web site.
DOI: 10.1007/BF01944150
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Spruce cone insects in British Columbia
Hedlin, A.F.
Year: 1975    Catalog ID: 29132
Available from: Pacific Forestry Centre
CFS Availability: PDF (download)
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Barbara colfaxianna siskivouana (Kft.), a pest in cones of Abies grandis
Hedlin, A.F.; Ruth, D.S.
Year: 1974    Catalog ID: 29100
Available from: Pacific Forestry Centre
CFS Availability: Not available through the CFS (click for more information).
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Temperature treatment of Douglas-fir seeds to control the seed chalcid Megastigmus spermotrophus Wachtl
Ruth, D.S.; Hedlin, A.F.
Year: 1974    Catalog ID: 29110
Available from: Pacific Forestry Centre
CFS Availability: PDF (request by e-mail)

Available from the Journal's Web site.
DOI: 10.1139/x74-065
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Cone and seed insects of British Columbia
Cone and seed insects of British Columbia
Hedlin, A.F.
Year: 1974    Catalog ID: 3955
Available from: Pacific Forestry Centre
CFS Availability: PDF (download)
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Spruce cone insects in British Columbia and their control
Hedlin, A.F.
Year: 1973    Catalog ID: 28664
Available from: Pacific Forestry Centre
CFS Availability: Not available through the CFS (click for more information).

Available from the Journal's Web site.
DOI: 10.4039/Ent105113-1
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A Douglas-fir twig mining beetle, Pityophthorus orarius (Coleoptera: Scolytidae)
Hedlin, A.F.; Ruth, D.S.
Year: 1970    Catalog ID: 28210
Available from: Pacific Forestry Centre
CFS Availability: PDF (request by e-mail)
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Experiments in preventive treatment of Douglas-fir against attack by the ambrosia beetle (Trypodendron lineatum) (Oliv.) using benzene hexachloride methyl trithion and other insecticides
Hedlin, A.F.; Woods, T.A.D.
Year: 1970    Catalog ID: 28211
Available from: Pacific Forestry Centre
CFS Availability: PDF (download)
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Rearing the Douglas-fir cone moth, Barbara colfaxiana (Kearfott), on an artificial diet in the laboratory
Ruth, D.S.; Hedlin, A.F.
Year: 1969    Catalog ID: 28015
Available from: Pacific Forestry Centre
CFS Availability: Not available through the CFS (click for more information).
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A new species of Camptomyia (Diptera: Cecidomyiidae) from Douglas-fir cones
Hedlin, A.F.; Johnson, N.E.
Year: 1968    Catalog ID: 27866
Available from: Pacific Forestry Centre
CFS Availability: Not available through the CFS (click for more information).

Available from the Journal's Web site.
DOI: 10.4039/Ent100532-5
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Cone insects of grand fir, Abies gradis (Douglas) Lindley, in British Columbia
Hedlin, A.F.
Year: 1967    Catalog ID: 27794
Available from: Pacific Forestry Centre
CFS Availability: Not available through the CFS (click for more information).
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The pine seedworm, Laspeyresia piperana (Lepidoptera: Olethreutidae), in cones of Ponderosa pine
Hedlin, A.F.
Year: 1967    Catalog ID: 27795
Available from: Pacific Forestry Centre
CFS Availability: Not available through the CFS (click for more information).

Available from the Journal's Web site.
DOI: 10.4039/Ent99264-3
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Douglas-fir cone insects and their control
Johnson, N.E.; Hedlin, A.F.
Year: 1967    Catalog ID: 24725
Available from: Northern Forestry Centre
CFS Availability: PDF (download)
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Cone and seed insects of grand fir, Abies grandis (Dougl.) Lindl
Hedlin, A.F.
Year: 1966    Catalog ID: 27542
Available from: Pacific Forestry Centre
CFS Availability: PDF (download)
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Laspeyresia piperana (Kft.) in cones of Ponderosa pine, Pinus ponderosa Laws
Hedlin, A.F.
Year: 1966    Catalog ID: 27543
Available from: Pacific Forestry Centre
CFS Availability: PDF (download)
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Prevention of insect-caused seed loss in Douglas-fir with systemic insecticides
Hedlin, A.F.
Year: 1966    Catalog ID: 27544
Available from: Pacific Forestry Centre
CFS Availability: PDF (download)
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Rearing cone insects in the laboratory on an artificial diet
Hedlin, A.F.
Year: 1965    Catalog ID: 24133
Available from: Pacific Forestry Centre
CFS Availability: PDF (download)
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Five systemic insecticides used against Douglas-fir cone insects
Hedlin, A.F.
Year: 1964    Catalog ID: 23993
Available from: Pacific Forestry Centre
CFS Availability: PDF (download)
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Life history and habits of a midge, Phytophaga thujae Hedlin (Diptera: Cecidomyiidae) in western red cedar cones
Hedlin, A.F.
Year: 1964    Catalog ID: 23994
Available from: Pacific Forestry Centre
CFS Availability: Not available through the CFS (click for more information).

Available from the Journal's Web site.
DOI: 10.4039/Ent96950-7
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Results of a six-year plot study on Douglas-fir cone insect population fluctuations
Hedlin, A.F.
Year: 1964    Catalog ID: 23995
Available from: Pacific Forestry Centre
CFS Availability: PDF (download)
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Life history and habits of a midge, Contarinia washingtonensis Johnson (Diptera: Cecidomyiidae), in Douglas-fir cones
Hedlin, A.F.; Johnson, N.E.
Year: 1963    Catalog ID: 23911
Available from: Pacific Forestry Centre
CFS Availability: Not available through the CFS (click for more information).

Available from the Journal's Web site.
DOI: 10.4039/Ent951168-11
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Attraction of Douglas-fir flowers to cone insects
Hedlin, A.F.
Year: 1962    Catalog ID: 20985
Available from: Pacific Forestry Centre
CFS Availability: PDF (download)
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Two systematic insecticides phosphamidon and systox used against the Douglas-fir cone midge, Contarinia oregonensis Foote
Hedlin, A.F.
Year: 1962    Catalog ID: 20986
Available from: Pacific Forestry Centre
CFS Availability: PDF (download)
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The life history and habits of a midge, Contarinia oregonensis Foote (Diptera: Cecidomyiidae) in Douglas-fir cones
Hedlin, A.F.
Year: 1961    Catalog ID: 20881
Available from: Pacific Forestry Centre
CFS Availability: Not available through the CFS (click for more information).

Available from the Journal's Web site.
DOI: 10.4039/Ent93952-11
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Some aspects of the cone and seed insect problem in the Pacific Northwest
Hedlin, A.F.
Year: 1961    Catalog ID: 20882
Available from: Pacific Forestry Centre
CFS Availability: PDF (download)
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An ecological study and damage appraisal of white spruce cone insects
Tripp, H.A.; Hedlin, A.F.
Year: 1956    Catalog ID: 16133
Available from: Laurentian Forestry Centre
CFS Availability: Not available through the CFS (click for more information).
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This may not be a complete list of the author's publications. This list provides the author's publications since he or she joined, or worked in cooperation with, the CFS. When available, another link is provided for periods of work elsewhere.