THE DEVELOPMENT OF RESISTANCE TO INSECTICIDES BY THE CRUCIFER FLEA BEETLE, PHYLLOTRETA CRUCIFERAE (GOEZE)

Abstract

The Canadian Entomologist 126: 1363 -1368 (1994) Four species of Tychius have been introduced into North America from Europe: Tychius picirostris (Fabricius) (host plants: Trifolium spp.), widespread in North America; T. cuprifer (Panzer) (host plants: Trifolium spp., Teline monspessulana L.), known only from Maryland, USA; T. meliloti Stephens, new North American record (host plants: Melilotus spp.), known from scattered localities in Saskatchewan, Manitoba, Ontario, and Quebec, Canada; and T. stephensi Schoenherr (host plants: Trifolium spp.), widespread in North America. Keys to separate the species are presented. Anderson, R.S., et A.T. Howden. 1994. D6couverte de Tychius meliloti Stephens au Canada et courte r6vision des espkces du genre Tychius Germar introduite en AmCrique du Nord (Coleoptera: Curculionidae). The Canadian Entomologist 126: 1363 -1368. RCsumC Quatre espbces de Tychius ont Ct C importkes d'Europe en AmCrique du Nord: Tychius picirostris (Fabricius) (plantes h6tes: Trifolium spp.), rCpandu en AmCrique du Nord; T. cuprifer (Panzer) (plantes h6tes: Trifolium spp., Teline monspessulana L.), rencontrC seulement au Maryland, E.-U.; T. meliloti Stephens, une espbce mentionnCe pour la premibre fois en ArnCrique du Nord (plantes h6tes: Melilotus spp.) et rencontrCe en des points dispersCs de la Saskatchewan, du Manitoba, de I'Ontario et du QuCbec, Canada; et T. stephensi Schoenherr (plantes h6tes: Trifolium spp.), rCpandu en AmCrique du Nord. Des clCs permettront de distinguer les diverses espbces. [Traduit par la RCdaction]

The Impact of Plant Essential Oils and Fine Mesh Row Covers on Flea Beetle (Chrysomelidae) Management in Brassicaceous Greens Production

“…The poor effectiveness of many insecticides may be due to the development of resistance in some flea beetle populations. For example, Canadian populations of the crucifer flea beetle, Phyllotreta cruciferae [ 17 ] and European populations of cabbage stem flea beetle, Psylliodes chrysocephala L. [ 18 ] have developed resistance to insecticides. Furthermore, conventional, and organic insecticides have non-target effects on beneficial insects such as pollinators and natural enemies [ 19 ].…”

Sustainable Management Tactics for Control of <I>Phyllotreta cruciferae</I> (Coleoptera: Chrysomelidae) on Canola in Montana

“…Canola growers in Montana often consider synthetic pyrethroids such as deltamethrin or bifenthrin to be the only effective method of managing P. cruciferae, despite their toxicity to natural enemy insects (Desneux et al 2007) and pollinators (Bernal et al 2010, Mommaerts andSmagghe 2011). Although there are many synthetic pyrethroids and carbamates labeled for control of ßea beetle in Brassica crops, their repeated use over multiple pest generations in the same location is likely to lead to the development of pesticide resistance (Turnock 1994).…”

Potential biopesticides for crucifer flea beetle, Phyllotreta cruciferae (Coleoptera: Chrysomelidae) management under dryland canola production in Montana

“…Currently, P. cruciferae management is based on using imidacloprid insecticide treated seeds, and further foliar application of insecticide when injury level reaches 15-20% at canola seedling stage (Lamb and Turnock 1982;Antwi et al 2007a;Reddy et al 2014). However, reliance on chemical insecticidebased pest management increases the risk of development of insecticide resistance (Turnock and Turnbull 1994), negative effects to pollinators and other beneficial insects. In this context, use of biopesticide product could offer an alternative treatment regimen to the conventional insecticides (Reddy et al 2014;Knodel 2017).…”