@article{boiteau_bradley_van duyn_1980, title={Bean leaf beetle: Seasonal history of the overwintering population in eastern North Carolina}, volume={15}, number={2}, journal={Journal of the Georgia Entomological Society}, author={Boiteau, G. and Bradley, J. R., Jr. and Van Duyn, J. W.}, year={1980}, pages={138} } @article{boiteau_bradley_van duyn_1980, title={Bean leaf beetle: Temporal and macro-spatial distribution in North Carolina}, volume={15}, number={2}, journal={Journal of the Georgia Entomological Society}, author={Boiteau, G. and Bradley, J. R., Jr. and Van Duyn, J. W.}, year={1980}, pages={151} } @article{boiteau_bradley_vanduyn_1979, title={BEAN LEAF BEETLE (COLEOPTERA, CHRYSOMELIDAE) - DIURNAL POPULATION FLUCTUATIONS}, volume={8}, ISSN={["0046-225X"]}, DOI={10.1093/ee/8.4.615}, abstractNote={Adult bean leaf beetle diurnal cycle of distribution on soybean plants was studied by sweepnet and whole plant sampling. Catches of beetles were lowest between 1100 and 1300 h and highest after 1500 h with some changes as the season progressed. The diurnal population sampling fluctuations could not be related to any distinct change in the vertical distribution of either sex of teneral or mature beetles on the plant. The effect of bean leaf beetle diurnal population fluctuations on sampling is also discussed.}, number={4}, journal={ENVIRONMENTAL ENTOMOLOGY}, author={BOITEAU, G and BRADLEY, JR and VANDUYN, JW}, year={1979}, pages={615–618} } @article{boiteau_bradley_vanduyn_stinner_1979, title={BEAN LEAF BEETLE (COLEOPTERA, CHRYSOMELIDAE) - MICRO-SPATIAL PATTERNS AND SEQUENTIAL SAMPLING OF FIELD POPULATIONS}, volume={8}, ISSN={["0046-225X"]}, DOI={10.1093/ee/8.6.1139}, abstractNote={Dispersion of teneral and mature bean leaf beetles (BLB) populations approximated a negative binomial with the single individual being the basic component of the distribution. Aggregation indices indicated departure from randomness but only a slight degree of clumping. The common k of the negative binomial was distinctly lower for callow BLB than for mature BLB. The degree of aggregation of mature BLB was correlated with the seasonal fluctuations in abundance of the callow BLB. It is suggested that the ovipositing behavior of females is the causative factor of subsequent BLB aggregation. Using sampling decision rules for adult BLB based on Morisita's I∂ and Lloyd's coefficients, 30–50 random samples of 20 sweeps adequately estimate BLB densities in homogeneous soybean fields. Simple sequential sampling methods suited to ecological population studies and estimation of population levels in relation to a predetermined threshold are suggested.}, number={6}, journal={ENVIRONMENTAL ENTOMOLOGY}, author={BOITEAU, G and BRADLEY, JR and VANDUYN, JW and STINNER, RE}, year={1979}, pages={1139–1144} } @article{boiteau_bradley_vanduyn_1979, title={BEAN LEAF BEETLE - (COLEOPTERA, CHRYSOMELIDAE) FLIGHT AND DISPERSAL BEHAVIOR}, volume={72}, ISSN={["0013-8746"]}, DOI={10.1093/aesa/72.2.298}, abstractNote={Trapping studies showed that 50% of the bean leaf beetles, Cerotoma trifurcata (Forster), caught below 3.0 m were less than 1 m from the ground. This pattern, independent of plant stage, was constant throughout the season in fields of flat topography which characterize the Tideland area. Bean leaf beetles are daytime fliers whose peak period of flight activity starts before 1200 h and ends by 1430—1500 h. Data collected by trap and sweepnet sampling showed 3 seasonal periods of flight: a field colonization flight by overwintered beetles and a combination of trivial and overwintering flights by both the F1 and F2 beetles.}, number={2}, journal={ANNALS OF THE ENTOMOLOGICAL SOCIETY OF AMERICA}, author={BOITEAU, G and BRADLEY, JR and VANDUYN, JW}, year={1979}, pages={298–302} } @article{boiteau_bradley_vanduyn_1979, title={BEAN LEAF BEETLE - (COLEOPTERA, CHRYSOMELIDAE) SOME SEASONAL ANATOMICAL CHANGES AND DORMANCY}, volume={72}, ISSN={["0013-8746"]}, DOI={10.1093/aesa/72.2.303}, abstractNote={Four behaviorally distinct groups were examined: (1) on-plant (soybean) individuals; (2) in-field, in flight individuals; (3) in-woods, in flight individuals; and (4) in-litter (overwintering) individuals. Since on-plant individuals' main activities consist of feeding, mating, and laying eggs, the group was characterized by developed ovaries, relatively high percentage of mated females, and lower abundance of fat bodies during egg maturation. Individuals in flight in the fields took the characteristics of on-plant individuals during mid-summer and of overwintering beetles during spring and fall. Ovaries were generally undeveloped in individuals taken from forest-floor litter and from traps in wooded areas. There was no gradual development of ovaries nor depletion of fat bodies during dormancy. Dormant females were characteristically unmated, with small and immature ovaries, and possessed an increased fat content. Dormant males carried live sperm throughout the year, showed no change in testes size, and had an increased fat content. These observations fit the criteria of reproductive diapause.}, number={2}, journal={ANNALS OF THE ENTOMOLOGICAL SOCIETY OF AMERICA}, author={BOITEAU, G and BRADLEY, JR and VANDUYN, JW}, year={1979}, pages={303–307} } @article{boiteau_bradley_vanduyn_1979, title={BEAN LEAF BEETLE - EMERGENCE PATTERNS OF ADULTS FROM OVERWINTERING SITES COLEOPTERA, CHRYSOMELIDAE}, volume={8}, ISSN={["0046-225X"]}, DOI={10.1093/ee/8.3.427}, abstractNote={Emergence of the bean leaf beetle from overwintering sites occurred over a period of 3 mo, 60% occurring in May. Emergence began at a day-length of 13 h and an avg daily temperature of 26°C. Cold rain suppressed emergence. Variations in macro- and micro-habitats affected the time of 1st emergence and the length of the emergence period.}, number={3}, journal={ENVIRONMENTAL ENTOMOLOGY}, author={BOITEAU, G and BRADLEY, JR and VANDUYN, JW}, year={1979}, pages={427–431} }