02144nas a2200217   4500008004100000020001400041245014500055210006900200260000800269300001000277490000700287520136900294653002201663100002501685700001501710700001701725700001601742700001701758700001601775856013501791       2012                        eng d  a0261-219400aEffect of allylisothiocyanate on Sitophilus oryzae, Tribolium confusum and Plodia interpunctella: Toxicity and effect on insect mitochondria0 aEffect of allylisothiocyanate on Sitophilus oryzae Tribolium con  cMar  a40-510 v333 aAllylisothiocyanate is a volatile chemical used for insect fumigation. Because its mode of action is not fully understood, the insecticidal efficacy of AITC was investigated using dry and wet-table applications on the major stored-product insects Sitophilus oryzae (L), Plodia interpunctella (Hubner), and Tribolium confusum Jacquelin Du Val. The LC50 values 72 h after fumigation with AITC against S. oryzae adults, P. interpunctella larvae, T. confusum adults and T. confusum larvae were 2.0, 2.2, 3.7, and 4.7[mu]l L-1 air, respectively. The complete mortality (100%) of all four insect pests was recorded after a 72-h exposure to AITC fumes at an atmospheric concentration of 11.5 [mu]l L-1 air, with results similar to those found with insects exposed to a recommended 5 mg L-1 dose of phosphine. No differences were detected between the effects of AITC and PH3 on the morphology of mitochondria taken from the midgut and integument epithelial cells of treated T confusum 3rd instar larvae. Rarefaction and vacuolization of the mitochondrial matrix were evident. The quantity of cristae and density of the electron matrix were also reduced. AITC has potential as a biodegradable and safe insect fumigant. The mitochondria alteration confirms the insecticidal effect of AITC, which may act on the respiratory system. (C) 2011 Elsevier Ltd. All rights reserved.10aSitophilus oryzae1 aMansour, Eltayeb, E.1 aMi, Fengyu1 aZhang, Guoan1 aXie, Jiugao1 aWang, Yongmo1 aKargbo, Abu  uhttps://weevil.myspecies.info/effect-allylisothiocyanate-sitophilus-oryzae-tribolium-confusum-and-plodia-interpunctella-toxicity-002144nas a2200217   4500008004100000020001400041245014500055210006900200260000800269300001000277490000700287520136900294653002201663100002501685700001501710700001701725700001601742700001701758700001601775856013501791       2012                        eng d  a0261-219400aEffect of allylisothiocyanate on Sitophilus oryzae, Tribolium confusum and Plodia interpunctella: Toxicity and effect on insect mitochondria0 aEffect of allylisothiocyanate on Sitophilus oryzae Tribolium con  cMar  a40-510 v333 aAllylisothiocyanate is a volatile chemical used for insect fumigation. Because its mode of action is not fully understood, the insecticidal efficacy of AITC was investigated using dry and wet-table applications on the major stored-product insects Sitophilus oryzae (L), Plodia interpunctella (Hubner), and Tribolium confusum Jacquelin Du Val. The LC50 values 72 h after fumigation with AITC against S. oryzae adults, P. interpunctella larvae, T. confusum adults and T. confusum larvae were 2.0, 2.2, 3.7, and 4.7[mu]l L-1 air, respectively. The complete mortality (100%) of all four insect pests was recorded after a 72-h exposure to AITC fumes at an atmospheric concentration of 11.5 [mu]l L-1 air, with results similar to those found with insects exposed to a recommended 5 mg L-1 dose of phosphine. No differences were detected between the effects of AITC and PH3 on the morphology of mitochondria taken from the midgut and integument epithelial cells of treated T confusum 3rd instar larvae. Rarefaction and vacuolization of the mitochondrial matrix were evident. The quantity of cristae and density of the electron matrix were also reduced. AITC has potential as a biodegradable and safe insect fumigant. The mitochondria alteration confirms the insecticidal effect of AITC, which may act on the respiratory system. (C) 2011 Elsevier Ltd. All rights reserved.10aSitophilus oryzae1 aMansour, Eltayeb, E.1 aMi, Fengyu1 aZhang, Guoan1 aXie, Jiugao1 aWang, Yongmo1 aKargbo, Abu  uhttps://weevil.myspecies.info/effect-allylisothiocyanate-sitophilus-oryzae-tribolium-confusum-and-plodia-interpunctella-toxicity-a01993nas a2200205   4500008004100000020001400041245011900055210006900174260000800243300001200251490000700263520124800270653003001518100002401548700001801572700001901590700002001609700002701629856013101656       2010                        eng d  a0261-219400aDevelopment of a bioacoustic sensor for the early detection of Red Palm Weevil (Rhynchophorus ferrugineus Olivier)0 aDevelopment of a bioacoustic sensor for the early detection of R  cJul  a671-6760 v293 aThe Red Palm Weevil (Rhynchophorus ferrugineus Olivier) is one of the worst pests for palms, since it can completely destroy the plant. Its early detection is very difficult and when the action of the pest is discovered, normally it is too late for recovering the plant. Bioacoustic sensors provide a good alternative for early detection of this pest because larvae activity is audible while they excavate tunnels to feed. This work describes the different stages for the development of an original electronic device based on acoustic sensors for early detection of Red Palm Weevil larvae in the interior of palms. This device is based on characteristic frequencies possibly related to their feeding activity. The performed tests have demonstrated that is possible to detect two week old larvae activity studying the sound intensity around 2250 Hz in palms infested only with 5 individuals under controlled environmental conditions. The activity of other insects artificially situated in the interior of palms did not affect the response of the device, possibly because they produce different frequencies (in the range 5-7 kHz). Future work will be aimed at assessing the infestation levels. [copyright] 2010 Elsevier Ltd. All rights reserved.10aRhynchophorus ferrugineus1 aGutierrez, Abelardo1 aRuiz, Vicente1 aMolto, Enrique1 aTapia, Gervasio1 aTellez, Maria, del Mar  uhttps://weevil.myspecies.info/development-bioacoustic-sensor-early-detection-red-palm-weevil-rhynchophorus-ferrugineus-olivier02053nas a2200181   4500008004100000020001400041245010000055210006900155260000800224300001200232490000700244520140500251653002501656100002701681700001701708700001901725856012701744       2011                        eng d  a0261-219400aTraslucent pheromone traps increase trapping efficiency of ambrosia beetle Megaplatypus mutatus0 aTraslucent pheromone traps increase trapping efficiency of ambro  cJun  a745-7470 v303 aMegaplatypus mutatus (=Platypus mutatus) is an ambrosia beetle native to South America. Unlike most ambrosia beetles, it attacks only living trees, penetrating the xylem of its host by boring long tunnels. These galleries cause severe stem-breakage and mortality in commercial poplar plantations. In previous studies we showed that volatile emissions from pioneer male M. mutatus are composed of (+)-6-methyl-5-hepten-2-ol, 6-methyl-5- hepten-2-one and 3-pentanol. Recently, we developed reservoir type controlled release dispensers and tested the efficacy of various trap designs in the field. Results showed that black cross-vane traps (CIPEIN-CV) captured significantly more insects than other traps designs baited with the same dispensers. In the present study we modified the colour, the construction material and the size of traps with the aim of increasing trapping efficacy and reducing the final trap cost. The results showed that significantly more female and male M. mutatus were captured in small and large traslucent traps (CIPEIN-CVt) than in black CIPEIN-CV trap. Furthermore, traslucent CIPEIN-CVt trap costs were significantly lower than costs for CIPEIN-CV traps. Significantly improved trapping efficacy with an important decrease in final costs will allow detection of considerably lower populations of M. mutatus in monitoring programs. [copyright]2011 Published by Elsevier Ltd.10aMegaplatypus mutatus1 aGonzalez-Audino, Paola1 aGatti, Pablo1 aZerba, Eduardo  uhttps://weevil.myspecies.info/traslucent-pheromone-traps-increase-trapping-efficiency-ambrosia-beetle-megaplatypus-mutatus02659nas a2200205   4500008004100000020001400041245011700055210006900172260000800241300001400249490000700263520191900270653002402189100001902213700002302232700002402255700001802279700002202297856013402319       2011                        eng d  a0261-219400aInsecticide resistance, mixture potentiation and fitness in populations of the maize weevil (Sitophilus zeamais)0 aInsecticide resistance mixture potentiation and fitness in popul  cDec  a1655-16660 v303 aHigh levels of pyrethroid resistance and emerging organophosphate resistance in Brazilian populations of the maize weevil Sitophilus zearnais (Coleoptera: Curculionidae) led to the registration of esfenvalerate + fenitrothion against them. Thus, a survey of physiological and behavioural resistance was carried out in 27 insect populations for two pyrethroids, esfenvalerate and permethrin, and the esfenvalerate + fenitrothion mixture. Physiological resistance to fenitrothion was also assessed, as was the potentiation of the mixture. The potential fitness cost associated with insecticide resistance was also investigated. The resistance levels were low to fenitrothion (<14.1-fold), low to moderate to the pyrethroids (1.6-70.0-fold) and low to the pyrethroid-organophosphate mixture (<5-fold) with a high heterogeneity of response among populations. The potentiation of insecticidal activity achieved with the insecticide mixture was very high (>350-fold) reinforcing its usefulness for managing weevils. There was little variation in walking behaviour (and insecticide avoidance) among populations: there was no significant variation in fitness, body mass and respiration rate among the populations of the insect. These however, displayed variable rates of grain consumption and activity of amylase and lipase. A decrease in insecticide resistance in maize weevil populations was observed relative to previous studies, but with an initial development of resistance to the insecticide mixture. Behavioural and physiological resistance were not correlated and not associated with fitness cost. Our results support the use of esfenvalerate + fenitrothion against the maize weevil, which is likely to have reduced the levels of pyrethroid resistance in field populations. However, resistance to this mixture seems to be evolving, justifying concerns regarding its use. (C) 2011 Elsevier Ltd. All rights reserved.10aSitophilus zearnais1 aCorrea, A., S.1 aPereira, E., J. G.1 aCordeiro, E., M. G.1 aBraga, L., S.1 aGuedes, R., N. C.  uhttps://weevil.myspecies.info/insecticide-resistance-mixture-potentiation-and-fitness-populations-maize-weevil-sitophilus-zeamais02661nas a2200229   4500008004100000020001400041245015300055210006900208260000800277300001000285490000700295520181100302100002502113700002302138700002102161700002002182700002602202700002302228700002202251700002302273856013502296       2012                        eng d  a0261-219400aEffects of cultivar and egg density on a colonizing vine weevil (Otiorhynchus sulcatus) population and its impacts on red raspberry growth and yield0 aEffects of cultivar and egg density on a colonizing vine weevil   cFeb  a76-820 v323 aBlack vine weevil (Otiorhynchus sulcatus) is regarded as a damaging pest of horticultural crops, yet empirical data about its population dynamics and effects on crop yield are largely lacking. This paper reports a four year (2007-2010) field study that simulated colonisation by O. sulcatus in a red raspberry (Rubus idaeus) plantation comprising two cultivars (Glen Ample and Glen Rosa). The study tested whether adult O. sulcatus abundance was affected by cultivar or original egg distribution. Total population estimates were also made using mark and recapture methods. Finally, the effects of O. sulcatus on plant growth and berry yield were quantified. O. sulcatus abundance was significantly higher on Glen Ample than Glen Rosa, with the difference becoming even greater in 2009 compared to 2008. The abundance of O. sulcatus adults on particular plants was not related to original egg density. Mark and recapture based estimates suggested that the overall O. sulcatus population reached 3500 in 2008 and 44,100 in 2009. O. sulcatus abundance on plants was negatively related to plant height. Comparing plants with greatest and lowest O. sulcatus burdens showed that the heavily infested plants had lower shoot and root biomass in both Glen Ample (62% and 60%, respectively) and Glen Rosa (50% and 12%, respectively), significantly smaller berries (5.1 g and 2.8 g, respectively, in Glen Ample and 3.3 g and 2.7 g, respectively, in Glen Rosa) and smaller yields (2.93 kg and 0.99 kg in Glen Ample and 2.80 kg-1.71 kg in Glen Rosa, respectively). While cane fruits like raspberry were thought to tolerate O. sulcatus attack due to extensive root systems, this study suggests that damage can be extensive, particularly on cultivars such as Glen Ample. [copyright]2011 Elsevier Ltd. All rights reserved.1 aClark, Katherine, E.1 aHartley, Susan, E.1 aBrennan, Rex, M.1 aJennings, Nikki1 aMcMenemy, Lindsay, S.1 aMcNicol, James, W.1 aMitchell, Carolyn1 aJohnson, Scott, N.  uhttps://weevil.myspecies.info/effects-cultivar-and-egg-density-colonizing-vine-weevil-otiorhynchus-sulcatus-population-and-its-imp01510nas a2200193   4500008004500000020001400045245012100059210006900180260001300249300001400262490000700276520081000283653002601093100001501119700001501134700001401149700001801163856013501181       2008                        Engldsh    a0261-219400aEndophytic Beauveria bassiana in banana (Musa spp.) reduces banana weevil (Cosmopolites sordidus) fitness and damage0 aEndophytic Beauveria bassiana in banana Musa spp reduces banana   cNovember  a1437-14410 v273 aThe effect of endophytic Beauveria bassiana in banana (Musa spp.) plants against the banana weevil Cosmopolites sordidus was examined in a screenhouse study in Uganda. Tissue-cultured banana plants (cv. Kibuzi, genome group EA-AAA) were inoculated by dipping roots in a B. bassiana suspension of 1.5 x 107 conidia/ml for 2 h. C. sordidus larvae were introduced 2 months later. Two weeks after larval infestation, endophytic B. bassiana significantly reduced larval survivorship (23.5[long dash]88.9% mycosis), resulting in 42.0[long dash]86.7% reduction of plant damage. This study has demonstrated for the first time that endophytic B. bassiana can be used to target the cryptic and damaging stage of C. sordidus, and offers an alternative, effective delivery mechanism for this biological control agent.10aCosmopolites sordidus1 aAkello, J.1 aDubois, T.1 aCoyne, D.1 aKyamanywa, S.  uhttps://weevil.myspecies.info/endophytic-beauveria-bassiana-banana-musa-spp-reduces-banana-weevil-cosmopolites-sordidus-fitness-an