Estimates of Overwintered Population Density and Adult Survival Rates for Heliothis virescens (Lepidoptera: Noctuidae) in the Mississippi Delta
Autor: | J. W. Smith, E. F. Knipling, D. F. Martin, John C. Schneider, M. L. Laster, W. F. Kitten |
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Rok vydání: | 1987 |
Předmět: | |
Zdroj: | Environmental Entomology. 16:1076-1081 |
ISSN: | 1938-2936 0046-225X |
Popis: | The overwintered population density of the tobacco budworm, Heliothis virescens (F.), was estimated during 1981–83 for an area 146.4 km2 in the central delta of Mississippi. Pheromone-baited cone traps were used to trap wild and released tobacco budworm males in a mark/release/recapture experiment. Estimates of the per-capita death rate of males trapped in 1982 and 1983 indicate that males live an average of 5–7 d in the spring. The total numbers of overwintered tobacco budworm moths emerging per hectare in 1981, 1982, and 1983 were estimated at 243, 5.7, and 20.9, respectively. Similar numbers of moths trapped at different distances from the release sites indicated that released moths were not clumped around the release sites. |
Databáze: | OpenAIRE |
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