Carabid beetles in commercial raspberry fields in the Fraser Valley of British Columbia and sampling protocol for Pterostichus melanarius-coleoptera: carabidae
Carabid beetles were sampled in 15 raspberry fields in the Fraser Valley of BC from April to September, 1994. At least 28 species were caught, but one, Pterostichus melanarius (Illiger), dominated with 80% of all individuals. Eight of the nine most numerous species (>200 individuals caught) were introduced in North America. Significant, 30-fold differences were detected between fields with respect to abundance of seven of these species. The differences could not be attributed to soil type, type of habitat at the edge of the field nearest the traps, or spray history. A sampling protocol for pest managers was developed in which 1 to 3 consecutive weekly samples during July provide a relative index of annual abundance of P. melanarius throughout the season. Traps should be set at a standard distance from the edge of a field because numbers increase with distance from the edge. At least 10 traps per field are required for reasonable precision.
History
Publication title
Journal of the Entomological Society of British Columbia
Volume
94
Pagination
51-58
ISSN
0071-0733
Department/School
Faculty of Education
Publisher
Entomological Society of British Columbia
Place of publication
Canada
Rights statement
Copyright 1997 the authors. Licensed under a Creative Commons Attribution 3.0 Unported (CC BY 3.0) License, (https://creativecommons.org/licenses/by/3.0/) that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Repository Status
Open
Socio-economic Objectives
Expanding knowledge in the agricultural, food and veterinary sciences