01984nas a2200193   4500008004100000020001400041245011000055210006900165260001000234300001200244490000700256520129700263653001501560653001701575100002001592700002101612700003001633856012701663       2012                        eng d  a1672-960900aGenetic distinctness of parthenogenetic forms of European Polydrusus weevils of the subgenus Scythodrusus0 aGenetic distinctness of parthenogenetic forms of European Polydr  cApril  a183-1940 v193 aAmong eight species of Polydrusus weevils which belong to subgenus Scythodrusus, at least two possess parthenogenetic forms: P. (S.) inustus and P. (S.) pilifer. Both of these species consist of dioecious populations in the Caspian area and of parthenogenetic populations in Eastern Europe (P. (S.) inustus), the Caucasus region (both species) and Middle Asia (P. (S.) pilifer). The origin of parthenogenesis in this subgenus is unresolved; however some data suggest that the parthenogenetic forms are of hybrid ancestry. The genetic distinctness of parthenogenetic Scythodrusus was assessed on the basis of COII, ITS2, EF1-[alpha] and Wolbachia wsp, 16S ribosomal DNA, ftsZ and hcpA sequence comparisons. Both taxa turned out to be monophyletic for all markers, which is an evidence against hybridization of their dioecious ancestors. On the other hand, a high frequency of heterozygous P. (S.) inustus females suggests an origin resulting from hybridization between genetically distinct dioecious representatives of this species. Very similar strains of Wolbachia supergroup A were found in both species, indicating that they have been either inherited from a common ancestor or were transmitted between parthenogenetic Scythodrusus weevils and probably spread randomly across their ranges.10aPolydrusus10aScythodrusus1 aKajtoch, Lukasz1 aKorotyaev, Boris1 aLachowska-Cierlik, Dorota  uhttps://weevil.myspecies.info/genetic-distinctness-parthenogenetic-forms-european-polydrusus-weevils-subgenus-scythodrusus01879nas a2200193   4500008004100000020001400041245015300055210006900208260001000277300001200287490000700299520114500306653002301451100002101474700001801495700001801513700001901531856013501550       2011                        eng d  a1672-960900aContact and fumigant toxicities of calamusenone isolated from Acorus gramineus rhizome against adults of Sitophilus zeamais and Rhizopertha dominica0 aContact and fumigant toxicities of calamusenone isolated from Ac  cApril  a181-1880 v183 aCalamusenone (3,8-dimethyl-5-(1-methylethylidene)-1,2,3,4,5,6,7,8-octahydroazulene-6- one, C15H22O) from Acorus gramineus Soland rhizome was tested in the laboratory for its insecticidal activities against adults of Sitophilus zeamais Motsch. and Rhizopertha dominica (Fab.), using dry film contact and fumigation methods. Responses varied with insect species, dosage and exposure time. In the dry film contact experiment, the highest insecticidal effects of calamusenone against S. zeamais and R. dominica adults were produced at 170.32 [mu]g/cm2 after treatment for 72 h, with 96.2% and 98.7% mortalities, respectively. The median lethal concentration (LC50) (72 h) values of calamusenone against S. zeamais and R. dominica adults were 67.00 [mu]g/cm2 and 77.30 [mu]g/cm2, respectively. As a potential fumigant, calamusenone showed moderate insecticidal effect on the adults of S. zeamais and R. dominica in fumigation experiment, with their LC50 (120 h) values of 125.71 [mu]L/L and 93.64 [mu]L/L respectively. Calamusenone isolated from A. gramineus rhizome showed promise as a novel pesticide candidate for stored-product pest control.10aSitophilus zeamais1 aHuang, Yan-Zhang1 aHua, Hong-Xia1 aLi, Shi-Guang1 aYang, Chang-Ju  uhttps://weevil.myspecies.info/contact-and-fumigant-toxicities-calamusenone-isolated-acorus-gramineus-rhizome-against-adults-sitoph02699nas a2200229   4500008004100000020001400041245010900055210006900164260001300233300001200246490000700258520189500265653003102160100002502191700002402216700001902240700002302259700002102282700001902303700002202322856012502344       2007                        eng d  a1672-960900aSurvival of boll weevil (Coleoptera: Curculionidae) adults after feeding on pollens from various sources0 aSurvival of boll weevil Coleoptera Curculionidae adults after fe  cDecember  a503-5100 v143 aThe survival of overwintering boll weevil, Anthonomus grandis grandis (Boheman), adults on non-cotton hosts in the Lower Rio Grande Valley (LRGV) of Texas was examined from 2001 to 2006. The success of the Boll Weevil Eradication Program, which was re-introduced into the LRGV in 2005, depends on controlling overwintering boll weevil populations. Laboratory studies were conducted using boll weevil adults that were captured in pheromone traps from September through March. The number of adults captured per trap declined significantly in the field from fall to the beginning of spring (3.5-7.0-fold). The proportion of trapped males and females did not differ significantly. The mean weight of boll weevil adults captured in September was 13.3 mg, while those of captured adults from November to February were significantly lower and ranged from 6.7 to 7.8 mg. Our results show that boll weevil adults can feed on different plant pollens. The highest longevity occurred when adults were fed almond pollen or mixed pollens (72.6 days and 69.2 days, respectively) and the lowest when they fed on citrus pollen or a non-food source (9.7 days or 7.4 days, respectively). The highest adult survival occurred on almond and mixed pollens [88.0%-97. 6% after 1st feeding period (10 days), 78.0%-90.8% after 3rd feeding period (10 days), 55. 0%-83.6% after 5th feeding period (10 days), and 15.2%-32.4% after 10th feeding period (10 days)). The lowest adult survival occurred on citrus pollen [52.0%-56.0% after 1st feeding period (10 days), 13.3% after 3rd and 5th feeding periods (10 days), and 0 after 6th feeding period (10 days)]. Pollen feeding is not a behavior restricted to adult boll weevils of a specific sex or physiological state. Understanding how boll weevil adults survive in the absence of cotton is important to ensure ultimate success of eradicating this pest in the subtropics.10aAnthonomus grandis grandis1 aGreenberg, Shoil, M.1 aJones, Gretchen, D.1 aEischen, Frank1 aColeman, Randy, J.1 aAdamczyk, J., J.1 aLiu, Tong-Xian1 aSetamou, Mamoudou  uhttps://weevil.myspecies.info/survival-boll-weevil-coleoptera-curculionidae-adults-after-feeding-pollens-various-sources02782nas a2200241   4500008004100000020001400041245013300055210006900188260001100257300001200268490000700280520193300287653003102220100002202251700001802273700002102291700001602312700002202328700002002350700001602370700001902386856013502405       2009                        eng d  a1672-960900aReproductive potential of field-collected overwintering boll weevils (Coleoptera: Curculionidae) fed on pollen in the laboratory0 aReproductive potential of fieldcollected overwintering boll weev  cAugust  a321-3270 v163 aThe reproductive potential of overwintering boll weevil, Anthonomus grandis grandis (Boheman), females collected from pheromone traps in September, November and January, fed for 1, 3, and 5 weeks on plant pollens, and then provided cotton squares, was determined in the laboratory at 27 [plus or minus] 1[degree]C, 65% RH, and a photoperiod 13 : 11 (L : D) h. Duration of pollen feeding by overwintering boll weevils did not significantly influence egg and feeding punctures, or puncture ratios (egg to total punctures) for any of the three months of parent weevil collections when provided cotton squares on a daily basis. However, punctures and puncture ratios are significantly different when comparing mean data between months of boll weevil collections. When boll weevils were provided with cotton squares daily, the pre-ovipositional periods of female parents captured in September, November and January were 5, 9 and 14 days, respectively. The rate of eggs by females was significantly lower during November and January than September. Female parents collected in September produced a significantly higher percentage of eggs yielding adult progeny than those collected in November and January. Life table parameters indicated that net reproductive rate (Ro) of boll weevil females collected in September was 1.2-fold higher than those collected in November and 10.7-fold higher than those collected in January. Except for testes size, no differences in male reproductive parameters were observed during the cotton-free period compared with males captured during mid-cotton (June). The number of oocytes in the ovarioles and the number of oocytes containing yolk were significantly lower during September, November and January compared with June. The reproductive potential of overwintering boll weevil females collected in different months is an important consideration in determining the success of any control strategy.10aAnthonomus grandis grandis1 aGreenberg, S., M.1 aJones, G., D.1 aAdamczyk, J., J.1 aEischen, F.1 aArmstrong, J., S.1 aColeman, R., J.1 aSetamou, M.1 aLiu, Tong-Xian  uhttps://weevil.myspecies.info/reproductive-potential-field-collected-overwintering-boll-weevils-coleoptera-curculionidae-fed-polle01567nas a2200205   4500008004100000020001400041245009900055210006900154260001300223300001200236490000700248520086700255653002201122653002401144100001901168700002301187700001901210700001901229856011301248       2010                        eng d  a1672-960900aEffects of bark beetle pheromones on the attraction of Monochamus alternatus to pine volatiles0 aEffects of bark beetle pheromones on the attraction of Monochamu  cDecember  a553-5560 v173 aWe evaluated the attraction of Monochamus alternatus Hope (Coleoptera: Cerambycidae), Dryocoetes luteus Blandford and Orthotomicus erosus Wollaston (Coleoptera: Curculionidae: Scolytinae) to multiple-funnel traps baited with the pine volatiles, ethanol and (+)-[alpha]-pinene and the bark beetle pheromones, ipsenol and ipsdienol. M. alternatus were attracted to traps baited with ethanol and (+)-[alpha]-pinene but not those baited with ipsdienol and ipsenol. Ipsdienol and ipsenol decreased catches of M. alternatus in traps baited with ethanol and (+)-[alpha]-pinene. Traps baited with either binary combinations of ethanol and (+)-[alpha]-pinene or ipsdienol and ipsenol were attractive to D. luteus and O. erosus. The addition of ipsenol and ipsdienol to traps baited with ethanol and (+)-[alpha]-pinene synergized attraction of O. erosus but not D. luteus.10aDryocoetes luteus10aOrthotomicus erosus1 aFan, Jian-Ting1 aMiller, Daniel, R.1 aZhang, Long-Wa1 aSun, Jiang-Hua  uhttps://weevil.myspecies.info/effects-bark-beetle-pheromones-attraction-monochamus-alternatus-pine-volatiles01792nas a2200205   4500008004500000020001400045245011900059210006900178260001100247300001200258490000700270520105000277653002401327100001701351700001901368700001501387700002001402700002901422856013501451       2008                        Engldsh    a1672-960900aGenetic diversity and biogeography of red turpentine beetle Dendroctonus valens in its native and invasive regions0 aGenetic diversity and biogeography of red turpentine beetle Dend  cAugust  a291-3010 v153 aSequences of 479 bp region of the mitochondrial COI gene were applied to detect population genetic diversity and structure of Dendroctonus valens populations. By comparing the genetic diversity between native and invasive populations, it was shown that the genetic diversity of Chinese populations was obviously lower than that of native populations with both indices of haplotype diversity and Nei's genetic diversity, suggesting genetic bottleneck occurred in the invasive process of D. valens, and was then followed by a relatively quick population buildup. According to phylogenetic analyses of haplotypes, we suggested that the origin of the Chinese population was from California, USA. Phylogenetic and network analysis of native populations of D. valens revealed strong genetic structure at two distinct spatial and temporal scales in North America. The main cause resulting in current biogeographic pattern was supposedly due to recycled glacial events. Meanwhile, a cryptic species might exist in the Mexican and Guatemalan populations.10aDendroctonus valens1 aCai, Yan-Wen1 aCheng, Xin-Yue1 aXu, Ru-Mei1 aDuan, Dong-Hong1 aKirkendall, Lawrence, R.  uhttps://weevil.myspecies.info/genetic-diversity-and-biogeography-red-turpentine-beetle-dendroctonus-valens-its-native-and-invasive02302nas a2200205   4500008004100000020001400041245015700055210006900212260001100281300001200292490000700304520152500311653003001836100001901866700001901885700001801904700002001922700001901942856013501961       2012                        eng d  a1672-960900aVariability and stability of tea weevil-induced volatile emissions from tea plants with different weevil densities, photoperiod and infestation duration0 aVariability and stability of tea weevilinduced volatile emission  cAugust  a507-5170 v193 aAfter herbivore attack, many plants emit herbivore-induced plant volatiles (HIPVs). HIPVs can attract carnivores and/or repel herbivores, thereby mediating tritrophic plantherbivorecarnivore interactions. HIPVs act as chemical information between organisms; hence, their variability and stability are vital. In the present study, variations in the volatile emissions, from the tea plant Camellia sinensis (O. Ktze) damaged by the tea weevil Myllocerinus aurolineatus (Voss) (Coleoptera: Curculionidae), with weevil densities, photoperiod and infestation duration, were investigated. The volatiles induced by high-density weevils were more abundant in composition and amount than those induced by low-density weevils, whether at noon, night or after weevil removal. The induced volatile emissions were similar on the second and third day after infestation, and the emissions of the major induced compounds displayed diurnal cycles. Linalool, (E,E)-a-farnesene, and benzyl nitrile were emitted mainly at noon, whereas 1,3,8-p-menthatriene and (E)-[beta]-ocimene were maximally emitted at night. Given the different emission dynamics, significant differences were found between noon- and night-induced volatiles. In summary, tea plants damaged by different weevil densities emitted a relatively stable signal at a particular time. This stability could be attributed to the similarities under the two densities of the main induced volatile compounds, their relative ratios and the emission dynamics of the induced volatiles.10aMyllocerinus aurolineatus1 aCai, Xiao-Ming1 aSun, Xiao-Ling1 aDong, Wen-Xia1 aWang, Guo-Chang1 aChen, Zong-Mao  uhttps://weevil.myspecies.info/variability-and-stability-tea-weevil-induced-volatile-emissions-tea-plants-different-weevil-densitie