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https://www.readbyqxmd.com/read/28495035/selection-of-bacillus-thuringiensis-strains-toxic-to-cotton-boll-weevil-anthonomus-grandis-coleoptera-curculionidae-larvae
#1
Melisa P Pérez, Diego H Sauka, María I Onco, Marcelo F Berretta, Graciela B Benintende
Preliminary bioassays with whole cultures (WC) of 124 Bacillus thuringiensis strains were performed with neonate larvae of Anthonomus grandis, a major cotton pest in Argentina and other regions of the Americas. Three exotic and four native strains were selected for causing more than 50% mortality. All of them were β-exotoxin producers. The native strains shared similar morphology of parasporal crystals, similar protein pattern and identical insecticidal gene profiles. These features resembled Lepidoptera-toxic strains...
May 8, 2017: Revista Argentina de Microbiología
https://www.readbyqxmd.com/read/28475677/acanthotomicus-sp-coleoptera-curculionidae-scolytinae-a-new-destructive-insect-pest-of-north-american-sweetgum-liquidambar-styraciflua-in-china
#2
Lei Gao, You Li, Ying Xu, Jiri Hulcr, Anthony I Cognato, Jian-Guo Wang, Rui-Ting Ju
A previously unknown bark beetle species, Acanthotomicus sp., has emerged as a lethal pest of American sweetgum (Liquidambar styraciflua) in China. Our survey of nursery records from around Shanghai suggests that American sweetgum have been under heavy attack since at least 2013, resulting in the death of > 10,000 trees. Mass attacks of the apparently sweetgum-specific Acanthotomicus sp. can be diagnosed by accumulation of resinous exudates on the trunk, wilted foliage, and eventual numerous exit holes of the new generation...
May 5, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28459955/flight-capacities-and-diurnal-flight-patterns-of-the-ambrosia-beetles-xyleborus-glabratus-and-monarthrum-mali-coleoptera-curculionidae
#3
Meeja Seo, Xavier Martini, Monique J Rivera, Lukasz L Stelinski
We compared the flight activity of Xyleborus glabratus Eichhoff, vector and symbiont of the causal agent of laurel wilt disease (Raffaelea lauricola), with a native species Monarthrum mali (Fitch) using flight mills. Flight mills were operated either for 24 h or for three 3-h time intervals. During the 3-h interval experiment, the shortest time to flight initiation for X. glabratus occurred at 1600-1900 hours. The average flight time and total flying distance during 1600-2100 hours were also higher than those quantified during the other two recording times investigated...
April 28, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28449326/area-wide-mass-trapping-by-pheromone-based-attractants-for-the-control-of-sugar-beet-weevil-bothynoderes-punctiventris-germar-coleoptera-curculionidae
#4
Z Drmić, M Toth, D Lemić, D Grubišić, M Pospišil, R Bažok
BACKGROUND: Due to the changing climate, narrow crop rotation, and changes in insecticide application practice, sugar beet weevil (SBW) (Bothynoderes punctiventris Germar) has become the most important economic pest in sugar beet. To develop alternative control methods, an area-wide (AW) control program using aggregation pheromones was implemented over four years on an area of 6 and 14.8 km(2) in east Croatia. RESULTS: The mass trapping of SBW on the "old" sugar beet fields reduced the population from 0...
April 27, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28406998/structure-and-dynamics-of-the-gut-bacterial-microbiota-of-the-bark-beetle-dendroctonus-rhizophagus-curculionidae-scolytinae-across-their-life-stages
#5
Carlos Iván Briones-Roblero, Juan Alfredo Hernández-García, Roman Gonzalez-Escobedo, L Viridiana Soto-Robles, Flor N Rivera-Orduña, Gerardo Zúñiga
Bark beetles play an important role as agents of natural renovation and regeneration in coniferous forests. Several studies have documented the metabolic capacity of bacteria associated with the gut, body surface, and oral secretions of these insects; however, little is known about how the bacterial community structure changes during the life cycle of the beetles. This study represents the first comprehensive analysis of the bacterial community of the gut of the bark beetle D. rhizophagus during the insect's life cycle using 454 pyrosequencing...
2017: PloS One
https://www.readbyqxmd.com/read/28369479/development-of-microsatellites-for-population-genetic-analyses-of-the-granulate-ambrosia-beetle-coleoptera-curculionidae
#6
Claudia Husseneder, Jong-Seok Park, Christopher T Werle, John J Adamczyk
Limited male dispersal and local mating in ambrosia beetles are expected to result in extreme inbreeding and highly structured populations. In this study, we developed microsatellite markers for the granulate ambrosia beetle, Xylosandrus crassiusculus (Motschulsky), for use in future studies into population and family structure of this invasive pest species. We employed de novo next-generation sequencing to generate whole genome shotgun sequences for the characterization of microsatellite loci. Approximately 6% of the 84,024 contigs generated from Hi-Seq Illumina 2x250bp sequencing contained microsatellites with at least four repeats of di-, tri-, tetra-, penta-, and hexamers...
March 28, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28369335/tempo-spatial-dynamics-of-adult-plum-curculio-coleoptera-curculionidae-based-on-semiochemical-baited-trap-captures-in-blueberries
#7
Johnattan Hernandez-Cumplido, Tracy C Leskey, Robert Holdcraft, Faruque U Zaman, Noel G Hahn, Cesar Rodriguez-Saona
Plum curculio, Conotrachelus nenuphar (Herbst), has become an important pest of highbush blueberries in the northeastern United States. Here, we conducted experiments in 2010-2013 to compare the efficacy of semiochemical-baited traps for C. nenuphar versus conventional (beating cloth) sampling methods in blueberries, and to understand the seasonal abundance and distribution of C. nenuphar adults within and among blueberry fields using these traps. Black pyramid traps baited with the C. nenuphar aggregation pheromone grandisoic acid and the fruit volatile benzaldehyde caught three to four times more adults than unbaited traps without causing an increase in injury to berries in neighboring bushes...
March 20, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28369216/biology-of-scolytus-piceae-coleoptera-curculionidae-scolytinae-in-northern-idaho-and-notes-on-comparative-anatomical-features-of-the-larva
#8
Malcolm M Furniss, Sandra J Kegley
The forests of the northern Rocky Mountains are hosts of nine species of Nearctic conifer-infesting bark beetles of the genus Scolytus Geoffroy. One of these, Scolytus piceae Swaine (Coleoptera: Curculionidae), infests spruces across the continent including Picea engelmannii Parry (Pinaceae) in Idaho. Mature larvae overwintered before transforming to adults, which infested new hosts in early June. Scolytus piceae most commonly infested shaded out lower branches of mature live spruce. In sporadic wind-felled spruce, the beetle infested the terminal portion of branches throughout the crown, whereas another Scolytinae, Polygraphus rufipennis (Kirby), infested the thicker bark basal portion of the same branches...
March 20, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28365767/diel-patterns-of-activity-for-insect-pollinators-of-two-oil-palm-species-arecales-arecaceae
#9
Thomas Auffray, Brigitte Frérot, Roberto Poveda, Claude Louise, Laurence Beaudoin-Ollivier
The pollination of two oil palm species, Elaeis guineensis Jacquin and Elaeis oleifera Cortés (Arecales: Arecaceae), depends on a mutualistic relation with insects, which use male inflorescences as a brood site, and visits female inflorescences lured by the emitted odor, which is similar to that of males. Although the activity of visiting the inflorescences by these insects is critical for the adequate natural pollination of the host plant, their activity is poorly documented. In the present study, we determine the diel activity of two specialized pollinator weevils (Coleoptera: Curculionidae) on inflorescences of their respective host-palm: Elaeidobius kamerunicus Faust specialized on E...
January 1, 2017: Journal of Insect Science
https://www.readbyqxmd.com/read/28364806/lufenuron-impact-upon-anthonomus-grandis-boheman-coleoptera-curculionidae-midgut-and-its-reflection-in-gametogenesis
#10
Hilton Nobre Costa, Franklin Magliano da Cunha, Glaucilane Santos Cruz, Carolline Guimarães D'assunção, Guilherme Gomes Rolim, Maria Edna Gomes Barros, Mariana Oliveira Breda, Alvaro Aguiar Coelho Teixeira, Valéria Wanderley Teixeira
The insecticide Match® (lufenuron), one of the main insect growth regulators used in pest control, has been presented as a viable alternative against the boll weevil, Anthonomus grandis (Coleoptera: Curculionidae), by inhibiting chitin synthesis. Thus, this study aimed to examine whether Match® interferes in the synthesis of the peritrophic matrix, leading to changes in the midgut epithelium, resulting in nutritional deficiency and reflecting, thereby, in the gametogenesis process of A. grandis. Floral cotton buds were immersed in the insecticide solution (800μL of Match®+200mL of distilled water) and offered to the adult insects...
April 2017: Pesticide Biochemistry and Physiology
https://www.readbyqxmd.com/read/28355476/illustrated-key-to-species-of-genus-dendroctonus-coleoptera-curculionidae-occurring-in-mexico-and-central-america
#11
Francisco Armendáriz-Toledano, Gerardo Zúñiga
We provide an illustrated key of species of Dendroctonus Erichson from Mexico and Central America based on characters of the male genitalia and external morphology. The key incorporates newly identified diagnostic characters for this genus that enhance discrimination of particularly difficult sibling species.
January 1, 2017: Journal of Insect Science
https://www.readbyqxmd.com/read/28353149/toxicity-of-an-annonin-based-commercial-bioinsecticide-against-three-primary-pest-species-of-stored-products
#12
L P Ribeiro, O Z Zanardi, G L P Gonçalves, T F Ansante, P T Yamamoto, J D Vendramim
The effects of a bioinsecticide formulation based on extract of Annona squamosa L. (Annonaceae) containing 10,000 mg L(-1) of acetogenin annonin as the main active ingredient were investigated against three primary pest species of stored grains in Brazil [maize weevil Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae), Mexican bean weevil Zabrotes subfasciatus (Boheman) (Coleoptera: Chrysomelidae: Bruchinae), and cowpea weevil Callosobruchus maculatus (Fabricius) (Coleoptera: Chrysomelidae: Bruchinae)] by means of residual contact bioassays...
March 28, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28334246/the-role-of-the-beetle-hypocryphalus-mangiferae-coleoptera-curculionidae-in-the-spatiotemporal-dynamics-of-mango-wilt
#13
Tarcísio Visintin da Silva Galdino, Dalton de Oliveira Ferreira, Paulo Antônio Santana Júnior, Lucas de Paulo Arcanjo, Elenir Aparecida Queiroz, Renato Almeida Sarmento, Marcelo Coutinho Picanço
The knowledge of the spatiotemporal dynamics of pathogens and their vectors is an important step in determining the pathogen dispersion pattern and the role of vectors in disease dynamics. However, in the case of mango wilt little is known about its spatiotemporal dynamics and the relationship of its vector [the beetle Hypocryphalus mangiferae (Stebbing 1914)] to these dynamics. The aim of this work was to determine the spatial-seasonal dynamic of H. mangiferae attacks and mango wilt in mango orchards and to verify the importance of H...
March 3, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28334232/walking-responses-of-tribolium-castaneum-coleoptera-tenebrionidae-to-its-aggregation-pheromone-and-odors-of-wheat-infestations
#14
B J Stevenson, L Cai, C Faucher, M Michie, A Berna, Y Ren, A Anderson, S Chyb, W Xu
The red flour beetle, Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae), is a worldwide pest of stored grains. Using "Y"-tube olfactometry we studied the response of T. castaneum to odors from simulated wheat infestations containing conspecifics, and infestations containing the lesser grain borer, Rhyzopertha dominica (F.) (Coleoptera: Bostrichidae), and the granary weevil Sitophilus granarius (L.) (Coleoptera: Curculionidae). Tribolium castaneum larvae were significantly attracted to odors from all three test species...
March 3, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28334212/sequential-sampling-plan-of-anthonomus-grandis-coleoptera-curculionidae-in-cotton-plants
#15
J F J Grigolli, L A Souza, T A Mota, M G Fernandes, A C Busoli
The boll weevil, Anthonomus grandis grandis Boheman (Coleoptera: Curculionidae), is one of the most important pests of cotton production worldwide. The objective of this work was to develop a sequential sampling plan for the boll weevil. The studies were conducted in Maracaju, MS, Brazil, in two seasons with cotton cultivar FM 993. A 10,000-m2 area of cotton was subdivided into 100 of 10- by 10-m plots, and five plants per plot were evaluated weekly, recording the number of squares with feeding + oviposition punctures of A...
April 1, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28334195/environmental-variables-influence-the-association-of-eustenopus-villosus-and-larinus-curtus-coleoptera-curculionidae-adults-with-different-growth-stages-of-the-invasive-thistle-centaurea-solstitialis-asteraceae-cardueae-in-washington-state
#16
S E Woodley, B A Zamora, T Coffey
A 2-yr (2014-2015) field study in eastern Washington State quantified the effect of environmental factors on the overwintered Eustenopus villosus (Boheman) and Larinus curtus (Hochhut) adults in relation to phenology of Centaurea solstitialis L. (Asteraceae: Cardueae), the feeding and breeding host for these two weevil biocontrol agents. We recorded in the study area: ambient and soil temperatures, soil moisture, percent cover and developmental stage of C. solstitialis, and presence of adults of each weevil species...
April 1, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28331386/phylogenetic-analysis-of-the-genus-laparocerus-with-comments-on-colonisation-and-diversification-in-macaronesia-coleoptera-curculionidae-entiminae
#17
Antonio Machado, Eduardo Rodríguez-Expósito, Mercedes López, Mariano Hernández
The flightless Entiminae weevil genus Laparocerus is the species-richest genus, with 237 species and subspecies, inhabiting Macaronesia (Madeira archipelago, Selvagens, Canary Islands) and the continental 'Macaronesian enclave' in Morocco (one single polytypic species). This is the second contribution to gain insight of the genus and assist in its systematic revision with a mitochondrial phylogenetic analysis. It centres on the Canarian clade, adding the 12S rRNA gene to the combined set of COII and 16S rRNA used in our first contribution on the Madeiran clade (here re-analysed)...
2017: ZooKeys
https://www.readbyqxmd.com/read/28326461/toxicity-and-detoxification-mechanism-of-black-pepper-and-its-major-constituent-in-controlling-rhynchophorus-ferrugineus-olivier-curculionidae-coleoptera
#18
A Hussain, M Rizwan-Ul-Haq, H Al-Ayedh, A M Aljabr
The survival, feeding response, and detoxification mechanism of Rhynchophorus ferrugineus Olivier, a key pest responsible for destruction of date palm, was examined with different extracts of Piper nigrum and its major constituent (piperine) identified by GC-MS. In the present study, toxicity of different extracts of black pepper was evaluated by incorporating diffferent doses of extracts into the artificial diet of red palm weevil larvae. All extracts showed dose-dependent insecticidal activity to the tested eighth-instar red palm weevil larvae...
March 21, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28325975/three-new-species-of-entimine-weevils-in-early-miocene-amber-from-the-dominican-republic-coleoptera-curculionidae
#19
Nico Franz, Guanyang Zhang
BACKGROUND: Using syntactic and semantic conventions of the taxonomic concept approach (Franz et al. 2015), we describe three newly recognized fossil broad-nosed weevils (Coleoptera: Curculionidae: Entiminae) preserved in Early Miocene amber (ca. 20.4-16.0 mya) from the Dominican Republic: Scelianoma compactasp. n. sec. Franz & Zhang (2017) (henceforth abbreviated as [FZ2017]), Tropirhinus palpebratussp. n. [FZ2017], and Diaprepes anticussp. n. [FZ2017]. The taxonomic assignment of the amber inclusions is grounded in a preceding phylogenetic analysis by Franz (2012)...
2017: Biodiversity Data Journal
https://www.readbyqxmd.com/read/28300939/first-record-of-acerola-weevil-anthonomus-tomentosus-faust-1894-coleoptera-curculionidae-in-brazil
#20
A L Marsaro, P R V S Pereira, G H Rosado-Neto, E G F Morais
The weevil of acerola fruits, Anthonomus tomentosus (Faust, 1894) (Coleoptera: Curculionidae), is recorded for the first time in Brazil. Samples of this insect were collected in fruits of acerola, Malpighia emarginata D.C. (Malpighiaceae), in four municipalities in the north-central region of Roraima State, in the Brazilian Amazon. Information about injuries observed in fruits infested with A. tomentosus, its distribution in Roraima, and suggestions for pest management are presented.
March 13, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
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