TY - JOUR T1 - Development of a semiochemical-based trapping method for the New Guinea sugarcane weevil, Rhabdoscelus obscurus in Guam JF - Journal of Applied Entomology Y1 - 2005 A1 - REDDY, G. V. P. A1 - Cruz, Z. T. A1 - BAMBA, J. A1 - MUNIAPPAN, R. SP - 65 EP - 69 KW - Behaviour KW - Chemical signals KW - Collecting techniques KW - Hosts KW - Land zones KW - Oceanic islands KW - Pacific Ocean islands KW - parasite KW - Techniques AB - Aggregation pheromone of the Australian population of New Guinea sugarcane weevil, Rhabdoscelus obscurus (Boisduval), in conjunction with other semiochemicals, was used to develop an efficient trapping method for the weevil population in Guam. In a field experiment at Yigo, plastic bucket traps baited with the lure of the Australian R. obscurus population in combination with ethyl acetate and cut sugarcane captured significantly more weevils than traps baited with pheromone + ethyl acetate, pheromone + sugarcane or individual lure components alone. Traps baited with various semiochemical-based lures and treated with insecticide captured significantly greater numbers of weevils than those not treated with insecticide. Traps baited with cut sugarcane caught significantly more weevils than those without sugarcane. Semiochemical-based trapping in weevil management has potential either in mass trapping or as part of an integrated pest management (IPM) programme. Based on the present findings, a future line of work for the control of this weevil is proposed. VL - 129 SN - 0931-2048 UR - ://ZOOREC:ZOOR14107040851 ER - TY - JOUR T1 - Chemical and behavioral ecology of palm weevils (Curculionidae: Rhynchophorinae) JF - Florida Entomologist Y1 - 1996 A1 - Giblin-Davis, R. M. A1 - Oehlschlager, A. C. A1 - Perez, A. A1 - Gries, G. A1 - Gries, R. A1 - Weissling, T. J. A1 - Chinchilla, C. M. A1 - Pena, J. E. A1 - Hallett, R. H. A1 - Pierce, H. D. , Jr. A1 - Gonzalez, L. M. SP - 153 EP - 167 KW - Behaviour KW - Chemical signals KW - Hosts KW - parasite KW - Rhynchophorinae AB - Palm weevils in the subfamily Rhynchophorinae (Curculionidae) (Rhynchophorus spp., Dynamis borassi, Metamasius hemipterus, Rhabdoscelus obscurus, and Paramasius distortus) use male-produced aggregation pheromones for intraspecific chemical communication. Pheromones comprise 8, 9, or 10 carbon, methyl-branched, secondary alcohols. (4S,5S)-4-Methyl-5-nonanol (ferrugineol) is the major aggregation pheromone for R. ferrugineus, R. vulneratus, R. bilineatus, M. hemipterus, and D. borassi and a minor component for R. palmarum. (5S,4S)-5-Methyl-4-octanol (cruentol), (3S,4S)-3-methyl-4-octanol (phoenicol), and (4S,2E)-6-methyl-2-hepten-4-ol (rhynchophorol) are the main aggregation pheromones for R. cruentatus, R. phoenicis, and R. palmarum, respectively. Plant kairomones strongly enhance pheromone attractiveness but none of the identified volatiles, such as ethyl acetate, ethyl propionate, or ethyl butyrate are as synergistic as fermenting plant (palm or sugarcane) tissue. Studying orientation behavior of foraging weevils to semiochemical devices helped to design and test traps for weevil capture. Generally, 3 mg per day of synthetic pheromone (with non-natural stereoisomers being benign) plus insecticide-treated plant tissue constitute highly attractive trap baits. Potential exists for pheromone-based mass-trapping of weevils to reduce their populations and the spread of the weevil-vectored red ring disease, for monitoring their population dynamics to facilitate pest management decisions, and for detection and possible interception of non-native weevils at ports of entry. VL - 79 SN - 0015-4040 UR - ://ZOOREC:ZOOR13300017286 ER - TY - JOUR T1 - Pheromone production by the New Guinea sugarcane weevil JF - Environmental Ent. Y1 - 1972 A1 - Chang, V. C. S. A1 - Curtis, G. A. SP - 476 EP - 481 KW - Behaviour KW - Chemical signals KW - Feeding KW - Rhabdoscelus obscurus VL - 1 UR - ://ZOOREC:ZOOR10900019662 ER - TY - JOUR T1 - Pheromone production by the New Guinea sugarcane weevil JF - Environmental Ent. Y1 - 1972 A1 - Chang, V. C. S. A1 - Curtis, G. A. SP - 476 EP - 481 KW - Behaviour KW - Chemical signals KW - Feeding KW - Rhabdoscelus obscurus VL - 1 UR - ://ZOOREC:ZOOR10900019662 ER - TY - JOUR T1 - Chemical and behavioral ecology of palm weevils (Curculionidae: Rhynchophorinae) JF - Florida Entomologist Y1 - 1996 A1 - Giblin-Davis, R. M. A1 - Oehlschlager, A. C. A1 - Perez, A. A1 - Gries, G. A1 - Gries, R. A1 - Weissling, T. J. A1 - Chinchilla, C. M. A1 - Pena, J. E. A1 - Hallett, R. H. A1 - Pierce, H. D. , Jr. A1 - Gonzalez, L. M. SP - 153 EP - 167 KW - Behaviour KW - Chemical signals KW - Hosts KW - parasite KW - Rhynchophorinae AB - Palm weevils in the subfamily Rhynchophorinae (Curculionidae) (Rhynchophorus spp., Dynamis borassi, Metamasius hemipterus, Rhabdoscelus obscurus, and Paramasius distortus) use male-produced aggregation pheromones for intraspecific chemical communication. Pheromones comprise 8, 9, or 10 carbon, methyl-branched, secondary alcohols. (4S,5S)-4-Methyl-5-nonanol (ferrugineol) is the major aggregation pheromone for R. ferrugineus, R. vulneratus, R. bilineatus, M. hemipterus, and D. borassi and a minor component for R. palmarum. (5S,4S)-5-Methyl-4-octanol (cruentol), (3S,4S)-3-methyl-4-octanol (phoenicol), and (4S,2E)-6-methyl-2-hepten-4-ol (rhynchophorol) are the main aggregation pheromones for R. cruentatus, R. phoenicis, and R. palmarum, respectively. Plant kairomones strongly enhance pheromone attractiveness but none of the identified volatiles, such as ethyl acetate, ethyl propionate, or ethyl butyrate are as synergistic as fermenting plant (palm or sugarcane) tissue. Studying orientation behavior of foraging weevils to semiochemical devices helped to design and test traps for weevil capture. Generally, 3 mg per day of synthetic pheromone (with non-natural stereoisomers being benign) plus insecticide-treated plant tissue constitute highly attractive trap baits. Potential exists for pheromone-based mass-trapping of weevils to reduce their populations and the spread of the weevil-vectored red ring disease, for monitoring their population dynamics to facilitate pest management decisions, and for detection and possible interception of non-native weevils at ports of entry. VL - 79 SN - 0015-4040 UR - ://ZOOREC:ZOOR13300017286 ER - TY - JOUR T1 - Development of a semiochemical-based trapping method for the New Guinea sugarcane weevil, Rhabdoscelus obscurus in Guam JF - Journal of Applied Entomology Y1 - 2005 A1 - REDDY, G. V. P. A1 - Cruz, Z. T. A1 - BAMBA, J. A1 - MUNIAPPAN, R. SP - 65 EP - 69 KW - Behaviour KW - Chemical signals KW - Collecting techniques KW - Hosts KW - Land zones KW - Oceanic islands KW - Pacific Ocean islands KW - parasite KW - Techniques AB - Aggregation pheromone of the Australian population of New Guinea sugarcane weevil, Rhabdoscelus obscurus (Boisduval), in conjunction with other semiochemicals, was used to develop an efficient trapping method for the weevil population in Guam. In a field experiment at Yigo, plastic bucket traps baited with the lure of the Australian R. obscurus population in combination with ethyl acetate and cut sugarcane captured significantly more weevils than traps baited with pheromone + ethyl acetate, pheromone + sugarcane or individual lure components alone. Traps baited with various semiochemical-based lures and treated with insecticide captured significantly greater numbers of weevils than those not treated with insecticide. Traps baited with cut sugarcane caught significantly more weevils than those without sugarcane. Semiochemical-based trapping in weevil management has potential either in mass trapping or as part of an integrated pest management (IPM) programme. Based on the present findings, a future line of work for the control of this weevil is proposed. VL - 129 SN - 0931-2048 UR - ://ZOOREC:ZOOR14107040851 ER -