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Diurnal cycle of emission of induced volatile terpenoids by herbivore-injured cotton plant.
The diurnal pattern of emission of volatile terpenoids was determined by collecting and analyzing the volatile compounds emitted by cotton plants subjected to feeding damage by beet armyworm larvae in situ, and volatile emission was monitored continuously.
Periodicity of Female Sex Pheromone Titer and Release in Heliothis subflexa and H. virescens (Lepidoptera: Noctuidae)
Amounts of sex pheromone components in extracts of pheromone glands of virgin female Heliothis virescens (F.) and Heliothis subflexa (Guenee) and in the emissions of pheromone from individual females
Sex pheromone of fall armyworm,Spodoptera frugiperda (J.E. Smith)
Tests demonstrated that both (Z)-7-dodecen-1-ol acetate and (Z-9-tetradecen- 1-ol Acetate are required for optimum activity and that this blend is a significantly better lure than either virgin females or 25 mg of (Z)9-Dodecan-1,ol acetates in a polyethylene vial, the previously used standard.
Volatile Semiochemicals Released from Undamaged Cotton Leaves (A Systemic Response of Living Plants to Caterpillar Damage)
Chemical evidence is found that volatiles are released not only at the damaged site but from the entire cotton plant, and when upper, undamaged leaves of a caterpillar-damaged plant were damaged with a razor blade, they released isomeric hexenyl butyrates, 2-methylbutyrates and large amounts of constitutive compounds in addition to the previously detected induced compounds.
Chemical and behavioral analyses of volatile sex pheromone components released by callingHeliothis virescens (F.) females (Lepidoptera: Noctuidae)
Bioassays using rubber septa formulated to release the female volatile blend indicated that all six aldehyde components play major roles in close-range male reproductive behavior.
Volatiles emitted by different cotton varieties damaged by feeding beet armyworm larvae
Volatile compounds elicited by insect herbivore feeding damage in five cotton cultivars and one naturalized cotton variety were examined by allowing beet armyworm larvae to feed overnight on leaves
Field Evaluation of Female-Targeted Trapping Systems for Ceratitis capitata (Diptera: Tephritidae) in Seven Countries
Field trials were conducted in Greece, Honduras, Mauritius, Morocco, Portugal, Spain, and Turkey to compare captures of the Mediterranean fruit fly, Ceratitis capitata (Wiedemann), among several
Technique for In Situ Coating of Ag+ Onto Silica Gel in HPLC Columns for the Separation of Geometrical Isomers
Abstract A method is described for the in situ coating of silver nitrate onto silica gel in high performance liquid chromatography columns. The columns effectively separated a series of geometrical
Development of a Dry Plastic Insect Trap with Food-Based Synthetic Attractant for the Mediterranean and Mexican Fruit Flies (Diptera: Tephritidae)
Unlike McPhail traps, which catch large numbers of miscellaneous Diptera, the plastic traps were highly specific and caught few nontarget flies.
Isolation and identification of allelochemicals that attract the larval parasitoid,Cotesia marginiventris (Cresson), to the microhabitat of one of its hosts
Volatiles released from corn seedlings on which beet armyworm larvae were feeding were attractive to females of the parasitoid, Cotesia marginiventris, in flight tunnel bioassays, and preflight experience with the synthetic blend instead of experience with a regular plant-host complex significantly improved the response to the synthetic Blend.