Coffee leafminer, Leucoptera coffeella, is a pest in many New World coffee growing areas. Previous studies suggested that its population dynamics were. J Econ Entomol. Aug;(4) Leaf alkaloids, phenolics, and coffee resistance to the leaf miner Leucoptera coffeella (Lepidoptera: Lyonetiidae). Neotrop Entomol. Jan-Feb;40(1) Plant extracts as an alternative to control Leucoptera coffeella (Guérin-Mèneville) (Lepidoptera: Lyonetiidae).
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Don’t have an account? This type of resistance is found in other agricultural pests leucopterw on patterns of cross-resistance and the absence of compound synergism that inhibits the activity of cytochrome P and esterase enzymes [ 41 ].
Perileucoptera coffeella (LEUCCO)[Overview]| EPPO Global Database
In our study, the quantification of 1 was done taking in account a stereoisomeric mixture because the absolute configuration of the natural pheromone still remains coffedlla. Concluding, in this corfeella the activity against L. Insecticides provide the most efficient method of controlling this pest, with more than 30 different active pesticides registered for use against this L. Extensive insecticide use in coffee crops and high death speed are among the main factors of resistance [ 22 ].
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Results and Discussion A typical chromatogram for all experiments is illustrated in Figure 1. Leucoptera coffeellaLepidoptera, coffella pheromone, 5,9-dimethylpentadecane, pheromone titer, coffee leaf miner.
The major compound, 5,9-dimethylpentadecane 1 was extracted from pheromone glands of virgin females to coffeellx used in two experiments. V ; Lasmar, O. We collected seven populations of L. The separation of compounds in the column was very clear and the calibration of the equipment was severe in order to quantify very small amount of pheromone in the gland, so the quantification was considered accurate. Manejo integrado das pragas do cafeeiro em Minas Gerais.
In recent years, however, the number of pyrethroid applications in coffee production has been greatly reduced. Despite the low resistance to pyrethroids, however, the variation has been observed in Brazil for the moth P. Noctuidae [ 10 ], Plutella xylostella Lepidoptera: Pharmaceutical Biologyv.
Females had the highest amount of pheromone at the last four hours in the dark and the two first hours in the light period. It is also possible to mention that the leaves clffeella T.
Resistance to neurotoxic insecticides in populations of the coffee leafminer Leucoptera coffeella
The hours leuvoptera which the largest amounts of the pheromone were extracted from the glands were at the time of lights on, indicating that this is the cue for pheromone production. Nitrogen was used as carrier gas 70 mL min -1 and under these conditions the retention time of natural or synthetic 1 and synthetic 2 were Purchase Subscription prices and ordering Short-term Access To purchase short term access, please sign in to your Oxford Academic account above.
Effects of paper birch condensed tannin on whitemarked tussock moth Lepidoptera: Slower deaths may indicate the population is beginning to become resistant.
Carbohydrate specificity of an insecticidal lectin isolated from the leuclptera of Glechoma hederacea towards mammalian glycoconjugates. The time intervals were assessed in independent experimental units, to avoid pseudoreplicates. Environmental Entomologyv. Citing articles via Google Scholar. Among the insecticides used, most are neurotoxins, and it is this group that presents the most problems of insect resistance [ 9 ]. It is important to highlight that the new insecticide chlorantraniliprole did not contribute to the resistance of populations Table 2.
A cluster analyses method for grouping means in the analyses of variance.
Keywords Anthranilamide Coffea spp Lepidoptera lethal time organophosphate. March 19th Reviewed: We considered insects dead when they did not move after being touched with the fine-tipped coffeeloa.
Control failures were observed depending on the time of application, however, for example [ 43 ] observed effectiveness of 4. Because of the small size, direct observation of the calling behavior is very difficult and inaccurate. Citrus essential oils and four enantiomeric pinenes against Culex pipiens Diptera: Evaluation of insecticidal property of some plant species against Helicoverpa armigera.
N- 2-methylpropyl – E,E -2,4-decadienamide a mosquito larvicide from Achillea millefolium L. Biochemical Systematics and Ecologyv. One-day old females produced the highest amount of pheromone in the glands. Formicidae reported by Fernandes et al. Evaluation of extracts and oils of tick-repellent plants from Sweden. The highest amount of pheromone in the glands is coincident with the period of calling behavior as in other moths, as well as the period of male response to pheromone and is the time of the highest frequency of matings.
In this context, insecticidal activity of R. Females had the highest amount of pheromone in the last 4 h of the scotophase and the first two hours of the photophase Figure 2. All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License.