Tuesday, December 12, 2006
D0340

A comparison of traps and tap sampling for monitoring adult Asian citrus psyllid, Diaphorina citri Kuwayama (Homoptera: Psyllidae), in citrus

David G. Hall, dhall@ushrl.ars.usda.gov1, Matthew G. Hentz, mhentz@ushrl.ars.usda.gov1, and Matt A. Ciomperlik, matt.a.ciomperlik@aphis.usda.gov2. (1) USDA-ARS, US Horticultural Research Laboratory, 2001 South Rock Road, Ft. Pierce, FL, (2) USDA-APHIS Center for Plant Health Science and Technology, Moore Air Base, Bldg 6414, 22675 North Moorefield Road, Edinburg, TX

The Asian citrus psyllid, Diaphorina citri Kuwayama, was first found in Florida during June 1998 and vectors the bacterium, Candidatus Liberibacter asiaticus, responsible for citrus greening disease, which was found in Florida during 2005. To help slow the spread of the disease and make management decisions for the psyllid it is imperative that a sampling technique be developed to monitor populations of adult psyllids. In this study we compared a tapping method against several trap types (yellow, blue sticky cards, CC traps [red, yellow, blue, green, black, white] and the Multi-Lure trap). The CC and Multi-Lure traps were charged with either ethylene glycol or a dichlorvos strip as the kill agent. Yellow sticky card traps captured significantly more adult psyllids (7.2 adults / trap /wk) than blue sticky card traps (4.8 adults / trap /wk), both of which captured significantly more adult psyllids than any of the other traps (0.1 – 0.6 adults / trap /wk). There were no significant differences among the CC and Multi-Lure traps or the killing agents. Trap captures of adults per week on yellow sticky cards were 3.3 to 9.0 times greater than the number of adults per tap sample. Tap sampling indicated 69.1% of the trees studied were infested during the study. Adults were collected on yellow and blue sticky card traps in every tree sampled. Percentage detection of adults using the other trap types ranged from 10 to 40%.


Species 1: Hemiptera Psyllidae Diaphorina citri (Asian citrus psyllid)