Population dynamics of the Douglas-fir cone moth, Barbara colfaciana (Kft.) (Lepidoptera:Olethreutidae) Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/1j92gb42b

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  • A population of the Douglas-fir cone moth, Barbara colfaxiana (Kft. ), was studied on the Buckhead Seed Production Area, Oakridge, Oregon, during 1971 and 1972. A method of estimating cone and insect populations is presented. Factors contributing to the mortality of B. colfaxiana are discussed, with resinosis being the critical factor. Larval food consumption is discussed with reference to calories of cone tissue consumed through time. An average of 761 calories are consumed through the four larval stages. Amounts consumed of each structure (bracts, scales, seeds) are presented. A structural model is presented that depicts the role of B. colfaxiana in a natural stand.
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  • File scanned at 300 ppi (Monochrome, 8-bit Grayscale, 24-bit Color) using ScandAll PRO 1.8.1 on a Fi-6670 in PDF format. CVista PdfCompressor 5.0 was used for pdf compression and textual OCR.
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  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2013-11-25T21:24:16Z (GMT) No. of bitstreams: 1 NebekerThomasE1974.pdf: 1234932 bytes, checksum: 0c83f92b915063a1c3e595f8058cf748 (MD5)
  • description.provenance : Submitted by Madison Medley (mmscannerosu@gmail.com) on 2013-11-22T00:46:00Z No. of bitstreams: 1 NebekerThomasE1974.pdf: 1234932 bytes, checksum: 0c83f92b915063a1c3e595f8058cf748 (MD5)
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2013-11-22T16:19:59Z (GMT) No. of bitstreams: 1 NebekerThomasE1974.pdf: 1234932 bytes, checksum: 0c83f92b915063a1c3e595f8058cf748 (MD5)
  • description.provenance : Made available in DSpace on 2013-11-25T21:24:16Z (GMT). No. of bitstreams: 1 NebekerThomasE1974.pdf: 1234932 bytes, checksum: 0c83f92b915063a1c3e595f8058cf748 (MD5) Previous issue date: 1973-08-29

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