01821nas a2200205   4500008004100000020001400041245013400055210006900189260000800258300001000266490000700276520107400283653003001357100001901387700002001406700001801426700001901444700001701463856013501480       2011                        eng d  a0739-446200aCloning and expression analysis of a G-protein alpha subunit-G alpha o in the rice water weevil Lissorhoptrus oryzophilus Kuschel0 aCloning and expression analysis of a Gprotein alpha subunitG alp  cJan  a43-540 v763 aThe open reading frame (ORF) encoding a novel G protein a subunit, Lo G[alpha]o, was cloned from the parthenogenetic rice water weevil, Lissorhoptrus oryzophilus Kuschel (Coleoptera: Curculionidae). The Lo G[alpha]o ORF encodes a protein of 354 amino acid residues. The deduced protein sequence shares high homology with G[alpha]o from other species. The expression patterns of Lo G[alpha]o in various adult tissues were indicated by real-time quantitative PCR and Western blot. The results showed that Lo G[alpha]o mRNA was expressed at similar levels in tissues except relative high levels in the antennae of adult, and Lo G[alpha]o protein of an apparent molecular mass of about 40 kDa was expressed in various tissues of the adult. Immunocytochemical localization showed that Lo G[alpha]o was mainly expressed in the dendrites of the trichoid sensilla in the antenna of the weevil. The tissue and cellular localization of Lo G[alpha]o suggests that Lo G[alpha]o may take a part in signal transduction of olfactory/gustatory. [copyright] 2010 Wiley Periodicals, Inc.10aLissorhoptrus oryzophilus1 aKang, Gui-Juan1 aGong, Zhong-Jun1 aCheng, Jia-An1 aZhu, Zeng-Rong1 aMao, Cun-Gui  uhttps://weevil.myspecies.info/cloning-and-expression-analysis-g-protein-alpha-subunit-g-alpha-o-rice-water-weevil-lissorhoptrus-or02369nas a2200193   4500008004100000020001400041245010800055210006900163260000800232300000900240490000700249520168000256653003001936100001901966700001901985700001802004700002102022856013202043       2012                        eng d  a0015-404000aANTENNAL SENSILLA OF PARTHENOGENETIC AND BISEXUAL LISSORHOPTRUS ORYZOPHILUS (COLEOPTERA: CURCULIONIDAE)0 aANTENNAL SENSILLA OF PARTHENOGENETIC AND BISEXUAL LISSORHOPTRUS   cMar  a8-150 v953 aAntennal sensilla were compared in parthenogenetic females and bisexual adults of rice water weevil, Lissorhoptrus oryzophilus Kuschel (Coleoptera: Curculionidae), using scanning electron micrographs. The antenna of parthenogenetic females and of both sexes of bisexual reproductive weevils consisted of the scape, pedicel, and 6 flagellar segments. Females, regardless of mode of reproduction, had longer antennal segments than males. The 3 adult forms/genders can be correctly classified into their respective groups with a set of discriminant mathematical functions based on 4 morphological measurements of length or maximum width of segments of the antennae. For both sexes, 6 morphological sensilla types were found on the antennae, including hydrofuge scales I (hsI), trichoid sensilla (ts), 2 types of squamiform sensilla (ssI, ssII), tuft hairs (th), and Bohm bristles (Bb). No remarkable sexual differences in the types or distribution of sensilla were found on the antennae among parthenogenetic and both sexes of bisexual reproductive weevils, except for hsI. Both the length and basal diameter of hsI of females were significantly greater than those of the males. The hsI of the parthenogenetic females were significantly longer than those of the bisexual females. The numbers of branches of hsI on the sixth flagellum of the parthenogenetic females were significantly more than on both sexes of bisexual adults. The numbers of branches of hsI of the females were significantly more than those of the males. From the information gained from this scanning electronic microscope study of antennae, we can separate rice water weevils by gender and reproductive mode.10aLissorhoptrus oryzophilus1 aKang, Gui-Juan1 aZhu, Zeng-Rong1 aCheng, Jia-An1 aWay, Michael, O.  uhttps://weevil.myspecies.info/antennal-sensilla-parthenogenetic-and-bisexual-lissorhoptrus-oryzophilus-coleoptera-curculionidae02111nas a2200205   4500008004500000020001400045245013100059210006900190260000900259300001200268490000700280520136800287653003001655100002001685700002101705700001501726700001701741700001201758856013501770       2008                        Engldsh    a0147-172400aReproductive biology of summer/fall populations of rice water weevil, Lissorhoptrus oryzophilus Kuschel, in southeastern Texas0 aReproductive biology of summerfall populations of rice water wee  cJune  a129-1370 v333 aThe rice water weevil, Lissorhoptrus oryzophilus Kuschel (Coleoptera: Erirhinidae), is one of the most important pests of rice, Oryzae sativa L., in the US, and has emerged as a pest of rice in eastern Asia where it reproduces parthenogenetically. Females were collected from early July to late September 2006 from flooded main crop rice, ratoon crop rice, and a light trap placed in grassy vegetation and fallow fields near Beaumont, TX. Their mating status and ovarian developmental stages were monitored, and their reproductive capacity on rice plants was determined in the laboratory. Sexually reproductive individuals occurred consistently from early July to mid-September, which accounted for more than 50% of the females in most collections. Less than 7% of females seemed to be reproducing parthenogenetically. In the laboratory, 45.1% of females were mated within 9 days after emergence. For females emerging in late July and late August, only 17.4 and 6.1%, respectively, developed to ovipositing and post-ovipositing stages after feeding on rice plants for 4 weeks. These results indicated that in Southeast Texas >80% of summer females entered diapause after emergence, but reproductive females often are abundant later in rice fields. Contributions of summer females to the occurrence and abundance of this insect in subsequent seasons are discussed.10aLissorhoptrus oryzophilus1 aJiang, Mingxing1 aWay, Michael, O.1 aDu, Xikuan1 aJi, Xianghua1 aHe, Yan  uhttps://weevil.myspecies.info/reproductive-biology-summerfall-populations-rice-water-weevil-lissorhoptrus-oryzophilus-kuschel-sout02016nas a2200193   4500008004100000020001400041245014200055210006900197260001200266300001400278490000700292520128700299653003001586100002001616700001601636700001801652700001701670856013501687       2007                        eng d  a0046-225X00aRice water weevil females of different elytral color morphs: comparisons of locomotor activity, mating success, and reproductive capacity0 aRice water weevil females of different elytral color morphs comp  cOctober  a1040-10470 v363 aFemales and males of the rice water weevil, Lissorhoptrus oryzophilus Kuschel (Coleoptera: Erirhinidae), have two elytral color morphs in Texas: the central pattern of their elytra is black (dark morph) or gray (light morph). In southeast Texas, the dark and light females exhibited similar proportions (28.6 and 32.0%, respectively) in populations collected during the spring. In this study, females of the two morphs were collected near rice fields in southeast Texas during April and May 2005. In the laboratory, light females were more active than dark ones. They mated equally successfully with males, irrespective of morph. For females supplied with males for 2d or kept solitary, and then reared on rice seedlings for 48 d, no significant differences were found between the two morphs in oviposition period, number of eggs deposited, and survival rate. In both morphs, a proportion of mated females did not oviposit throughout the rearing period, implying that a mating experience might be necessary before reproductive development can be initiated. However, oviposition occur-red in a proportion of females in which no mating experience could be detected, and their eggs produced larvae, which suggests the probability of existing parthenogenetic females in southeast Texas.10aLissorhoptrus oryzophilus1 aJiang, Mingxing1 aWay, M., O.1 aZhang, Wenjun1 aCheng, Jiaan  uhttps://weevil.myspecies.info/rice-water-weevil-females-different-elytral-color-morphs-comparisons-locomotor-activity-mating-succe01770nas a2200193   4500008004500000020001400045245012500059210006900184260000800253300001200261490000700273520106200280653003001342100001201372700001801384700002101402700001801423856013501441       2008                        Chindse    a1008-920900aUltrastructures of spermatozoon tail in rice water weevil, Lissorhoptrus oryzophilus Kuschel (Coleoptera, Curculionidae)0 aUltrastructures of spermatozoon tail in rice water weevil Lissor  cJul  a355-3600 v343 aUltrastructures of spermatozoon tail in the rice water weevil, Lissorhoptrus oryzophilus, were observed via transmission electron microscopy at selected sperm developmental stages with the aim at clarifying spermiogenesis in this weevil. The flagellum interior is composed of two mitochondrial derivatives, two accessory bodies, one centriole adjunct and one microtubule system (axoneme). The axoneme consists of nine accessory microtubules, nine peripheral doublets of microtubules and two central microtubules, displaying a typical 9 + 9 + 2 pattern. The two mitochondrial derivatives have different shapes and contents during the spermiogenesis. The centriole adjunct occurs late, and the microtubules surrounding mitochondrial derivatives, accessory bodies and centriole adjunct disappear in late spermiogenesis stages. In conclusion, L. oryzophilus has a similar spermiogenesis with several other coleopterans reported, meanwhile it possesses some specificity in terms of the occurrence of mitochondrial derivatives, centriole adjunct and microtubules.10aLissorhoptrus oryzophilus1 aHe, Yan1 aJi, Xiang-hua1 aJiang, Ming-Xing1 aCheng, Jia-An  uhttps://weevil.myspecies.info/ultrastructures-spermatozoon-tail-rice-water-weevil-lissorhoptrus-oryzophilus-kuschel-coleoptera-cur02216nas a2200229   4500008004100000020001400041245013400055210006900189260000800258300001000266490000700276520144800283653003001731100001801761700001301779700001801792700000501810700001301815700001001828700001401838856013401852       2011                        eng d  a1001-433000aThe first discovery of significant invasive pest of paddy Lissorbqptrus Lissorhoptrus oryzqphilus oryzophilus Kuschel in Xinjiang0 afirst discovery of significant invasive pest of paddy Lissorbqpt  cJan  a70-740 v483 aObjective. To provide the reference about scientific monitoring and control of Lissorhoptrus oryzophilus Kuschel for the Xinjiang paddy planting area. Method. According to the general survey, the fixed - point investigation as well as reported reference, the occurrence, distribution and damage of Lissorhoptrus oryzophilus Kuschel were confirmed, and also description of its morphological characteristics, introduction of the research achievment at home and abroad about its biological characteristics, the occurrence of regulation of Lissorhoptrus orgyzophilus Kuschel, and providing the strategy and the measures of controlling the pest have been revealed. Result. Up to now, 8 villages and towns which cover 4 000 hectar of rice fields in Qapqal Xibe Autonomous County in Ili river valley and the MiDong, Urumqi were involved in the distribution of the pest. The population density of the larve reached 20/each hole. The density of the adult pest - insects could reach 3 .7/square meters. In general, the pest could cause 5% lose of output approximately, the more serious lose could reach above 25% of total yield. Conclusion. Based on research achievment about main biological characteristics, occurrence regulation of Lissorhoptrus orgzophilus Kuschel at home and abroad combined with its feature about initial period of invasion and the Xinjiang paddy 's production reality, the measures for controling the pest - insects were provided.10aLissorhoptrus oryzophilus1 aGuo, Wen-chao1 aLi, Jing1 aWei, Zhen-xin1 a1 aWu, Jing1 aAliya1 aWang, Jun  uhttps://weevil.myspecies.info/first-discovery-significant-invasive-pest-paddy-lissorbqptrus-lissorhoptrus-oryzqphilus-oryzophilus01534nas a2200205   4500008004100000020001400041245011200055210006900167260001100236300001000247490000700257520082700264653003001091100001901121700001601140700001301156700001401169700001901183856012601202       2007                        eng d  a1671-465200aStudy on the suitable establishment area of rice water weevil, Lissorhoptrus oryzophilus (Kuschel) in China0 aStudy on the suitable establishment area of rice water weevil Li  cMar 30  a79-820 v283 aBased on Arcview GIS 3. 2 and the studies of the biological characteristics of rice water weevil, Lissorhoptrus oryzophilus (Kuschel), the possible suitable establishment area of the pest in China is forecasted. The results preliminarily indicate that the potential optimum establishment area include 48 counties and cities belonging to 5 provinces and autonomous regions of South China and South-west China, ranged from 16. 53[degree]N to 26. 73[degree]N and from 97. 85[degree]E to 116. 75[degree] E. The potential suitable establishment area include 468 counties and cities belonging to 29 provinces, municipalities and autonomous regions of East China, South China, West-south China, Middle China, West-north China and North Chin ranged from 22. 98[degree]N to 48[degree]N and from 88. 88[degree]E to 132. 96[degree]E.10aLissorhoptrus oryzophilus1 aGong, Wei-rong1 aDu, Yu-zhou1 aDai, Lin1 aCai, Chao1 aDiao, Chun-you  uhttps://weevil.myspecies.info/study-suitable-establishment-area-rice-water-weevil-lissorhoptrus-oryzophilus-kuschel-china02209nas a2200193   4500008004100000020001400041245014200055210006900197260001100266300001400277490000800291520149000299653003001789100001501819700001601834700001601850700001401866856013501880       2009                        eng d  a0022-049300aEffect of planting date on Lissorhoptrus oryzophilus (Coleoptera: Curculionidae) density-yield relationship on rice in southeastern Texas0 aEffect of planting date on Lissorhoptrus oryzophilus Coleoptera   cAugust  a1536-15450 v1023 aResults of planting date and insecticide efficacy experiments targeting Lissorhoptrus oryzophilus Kuschel (Coleoptera: Curculionidae) on rice, Oryza sativa L., in Southeastern Texas between 2002 and 2007 were used to determine density-yield relationships as a function of planting date. Soil core samples were collected on two dates during main crop development to estimate immature L. oryzophilus populations followed by main and ratoon crop harvests. Analysis of covariance (ANCOVA) revealed that planting date did not affect the density-main crop yield relationship during most years and that these relationships varied substantially among years. For ratoon crop yield, an effect of main crop L. oryzophilus immature infestation was detected during some years, but the real effect of these populations on ratoon crop yield remains unclear. Using estimates of yield reduction per L. oryzophilus immature, economic injury levels were calculated. Main crop yields from treated plots and first soil core sample L. oryzophilus immature populations from untreated plots were significantly higher in plots planted at recommended dates than in plots planted earlier or later. This suggests that the presence of high populations of reproductive L. oryzophilus coincides with the period when rice fields planted at optimum dates are flooded. Results from this study reinforce the importance of managing L. oryzophilus populations when planting rice at recommended dates in southeastern Texas.10aLissorhoptrus oryzophilus1 aEspino, L.1 aWay, M., O.1 aPearson, R.1 aNunez, M.  uhttps://weevil.myspecies.info/effect-planting-date-lissorhoptrus-oryzophilus-coleoptera-curculionidae-density-yield-relationship-r01948nas a2200157   4500008004100000020001400041245013100055210006900186260000900255300001200264490000700276520132500283653003001608100001701638856013501655       2012                        eng d  a0015-404000aOCCURRENCE AND ABUNDANCE OF LISSORHOPTRUS ORYZOPHILUS (COLEOPTERA: CURCULIONIDAE) RELATIVE TO FIELD BORDERS IN CALIFORNIA RICE0 aOCCURRENCE AND ABUNDANCE OF LISSORHOPTRUS ORYZOPHILUS COLEOPTERA  cJune  a445-4530 v953 aField experiments were conducted during 2009 and 2010 on commercial rice fields in the Sacramento Valley of California to validate observations regarding the prevalence of immature populations of the rice water weevil, Lissorhoptrus oryzophilus Kuschel (Coleoptera: Curculionidae), near field borders, and to assess their impact on yield. In 5 commercial fields, insecticide-treated and untreated plots were established 4.5, 30 and 60 m from one edge of the field. Soil core samples were collected on 2 dates and inspected for L. oryzophilus immatures. Rice yields were determined by harvesting 15 m2 plots in 2009 or 1 m2 per plot in 2010. Analysis of variance (ANOVA) showed that in most locations, immature populations were higher in plots 4.5 or 30 m from the field's edge than in plots 60 m from the field's edge. Yields from treated and untreated plots did not differ significantly Linear regression of immature populations and rice grain yield per plot per location did not yield a significant, inverse density-yield relationship. Results indicate that border applications of insecticides for L. oryzophilus management are appropriate; however, growers are advised to inspect their fields to confirm border populations and effects on yield. Research needs regarding sampling and economic thresholds are discussed.10aLissorhoptrus oryzophilus1 aEspino, Luis  uhttps://weevil.myspecies.info/occurrence-and-abundance-lissorhoptrus-oryzophilus-coleoptera-curculionidae-relative-field-borders-c