Pheromone Trap Thresholds for Management of Overwintered Boll Weevils (Coleoptera: Curculionidae)

Variation in Boll Weevil (Coleoptera: Curculionidae) Captures in Pheromone Traps Arising from Wind Speed Moderation by Brush Lines

“…Position effects are frequently attributed to the proximity of traps to boll weevil overwintering habitat (Roach et al 1971a(Roach et al , 1972Mitchell et al 1977;, and hence to a clumped distribution of the weevils (Boyd et al 1973). Decisions on initial placement of traps are sometimes guided by the layout of potential overwintering habitat around a Þeld (Rummel et al 1980, Benedict et al 1985, Carroll and Rummel 1985. However, our results indicate that such position-related variation can arise from differences in local wind speed as governed by local vegetation, depending on wind direction, independent of any variation caused by a discontinuous distribution of weevils.…”

Pest categorisation of Anthonomus grandis

“…A. grandis adults can be trapped with the synthetic aggregation pheromone ‘grandlure’ (Benedict et al., ). This is used either to ensure compliance with eradication programmes (Suh et al., ) or early in the season to time the first insecticide applications (Henneberry et al., ).…”

The absolute efficiency of gypsy moth, Lymantria dispar (Lepidoptera: Lymantriidae), milk-carton pheromone traps

“…The relationship between trap catch and underlying population density is known for no pheromone trapping system: the catch gives only a relative estimate of population density or, more generally, damage potential (e.g., boll weevil (Anthonomus grandis grandis Boheman (Coleoptera: Curlionidae) (Benedict et al, 1985)). However, the relative effectiveness of a number of different samplers has been determined for several target species (e.g., pea moth (Cydia nigricana (Fabricius) (Lepidoptera: Tortricidae)) (Lewis & Macaulay 1976)) and gypsy moth (Lymantria dispar (Linnaeus)) (Mastro et al, 1977)).…”