Name Donald Lee Dahlsten, born 8 December 1933, Clay Center, Nebraska

Title Professor of Entomology, Divsion of Insect Biology, Center for Biological Control, University of California, Berkeley and Entomologist in the Agricultural Experiment Station.


  • Graduated from Hollywood High School, Los Angeles, California, Feb. 1952
  • B.S. University of California, Davis, June 1956
  • M.S. University of California, Berkeley, June 1960
  • Ph.D. University of California, Berkeley, June 1963
  • Background

    1. Research Assistant in Entomology, University of California, Berkeley,   February 1959 to July 1959.
    2. Laboratory Technician II in Entomology, University of California, Berkeley,   July 1959 to September 1962
    3. Assistant Professor of Zoology,   Los Angeles State College, Los Angeles,  September 1962 to September 1963.
    4. Assistant Entomologist,   University of California, Berkeley, October 1963 to July 1965
    5. Lecturer in Entomology, July 1965 to July 1968.
    6. Assistant Professor of Entomology, July 1968 to July 1969.
    7. Associate Professor of Entomology, July 1969 to 1974.
    8. Professor of Entomology, July 1974 to present.

    Professional Societies


    1960. Life history of a pine sawfly, Neodiprion sp., (Hymenoptera: Diprionidae) at Willits, California.   M.S. thesis, University of California, 32 pp.

    1963. The bionomics of pine sawflies, Neodiprion fulvicepts complex, in a California brushfield plantation. Ph.D. thesis, University of California, 197 pp.

    Research Interests

    1. Parasitoids, predators and associated organisms of Scolytidae--biology and distribution of the above organisms in infested trees. Host insects include Dendroctonus brevicomis, Scolytus ventralis and Ips confusus.

    2. Development of life tables for diprionid sawflies, appraisal of natural enemy effectiveness, comparison of parasite complexes, and development of sampling techniques.

    3. Role of insectivorous birds as predators of forest insects, avian stomach analyses, life histories and nesting box investigations. Emphasis is on hole nesting birds, nuthatches, chickadees and creepers.

    4. Douglas-fir tussock moth, Hemerocampa pseudotsugata, parasitoid complex - parasitoid biologies and evaluation of parasitoid effectiveness in the laboratory and field. Investigations include studies of Trichogramma and the development of fecundity tables for Podisus serieventris.

    5. Ecological investigation of two distinct populations of the lodgepole needle miner, Recurvaria milleri. Basic studies of parasitoids and vertebrate and invertebrate predators with special consideration for functional and numerical responses.

    These studies are included in three California Agricultural Experiment Station Projects as follows:

  • 1760 Biological Control of Forest Insects
  • 2420 Population Dynamics of Forest Defoliators
  • 2523 Influence of Chemical Pesticides on Forest Communities
  • 2929 Role of Biological Control in Urban Pest Management Systems
  • Publications (see this link)


    1. Selected as American Institute of Biological Sciences Visiting Professor, 1970-71 Academic year, 1971-72 Academic year.

    2. Mellon Visiting Lecturer in Entomology, Yale School of Forestry and Environmental Studies, Spring Term, January-May, 1980.

    3. Selected by ISEC Forestry Panel as part of a 6-person forest technology exchange team to visit the People's Republic of China for integrated pest management of forest insects and diseases. Sponsored by USDA, Forest Service and Office of International Cooperative and Development and the Society of American Foresters. 23 April - 29 May, 1981.

    4. Delegation leader of a 4-member team on Integrated Pest Management in forestry to the People's Republic of China. Invited by the State Agricultural Commission and approved by the US/PRC Joint Working Group on Agricultural Cooperation. U.S. Office of International Cooperation and Development/STE China Program. 8 May - 4 June, 1982.

    5. College of Natural Resources Outstanding Teaching Award; UC Berkeley, Sept. 1995.