The ambrosia beetle, Gnathotrichus retusus (Coleoptera: Scolytidae) breeding in red alder, Alnus rubra (Betulaceae)

Authors

  • Susanne Kuhnholz Centre for Environmental Biology, Department of Biological Sciences Simon Fraser University 8888 University Drive Burnaby, BC V5A 1S6
  • John H. Borden Centre for Environmental Biology, Department of Biological Sciences Simon Fraser University 8888 University Drive Burnaby, BC V5A 1S6
  • Rory L. McIntosh Centre for Environmental Biology, Department of Biological Sciences Simon Fraser University 8888 University Drive Burnaby, BC V5A 1S6

Abstract

Brood adult ambrosia beetles recovered from well established galleries in a windthrown red alder, Alnus rubra Bongard, on Burnaby Mountain, Burnaby, British Columbia, were identified as Gnathotrichus retusus LeConte. The tree was attacked to a height of 25.8 m. Galleries penetrated up to 17.5 cm into the wood. The mean density of gallery entrance holes (± SE) was 120 ± 31.9 per m2 of the bark surface. The mean production of brood in five completely dissected galleries was 13.2 ± 5.5. These results show conclusively that C. relusus in British Columbia can breed successfully in an angiosperm host.

Key Words: Gnathotrichus retusus; Alnus rubra; ambrosia beetle

Downloads

Issue

Vol. 97 (2000): Journal of the Entomological Society of British Columbia

Section

Articles

License

Authors who publish with the Journal of the Entomological Society of British Columbia agree to the following terms:

-Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.

-Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.

-Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).