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Curculionidae

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https://www.readbyqxmd.com/read/28626604/seasonal-shifts-in-accumulation-of-glycerol-biosynthetic-gene-transcripts-in-mountain-pine-beetle-dendroctonus-ponderosae-hopkins-coleoptera-curculionidae-larvae
#1
Jordie D Fraser, Tiffany R Bonnett, Christopher I Keeling, Dezene P W Huber
Winter mortality is a major factor regulating population size of the mountain pine beetle, Dendroctonus ponderosae Hopkins (Coleoptera: Curculionidae). Glycerol is the major cryoprotectant in this freeze intolerant insect. We report findings from a gene expression study on an overwintering mountain pine beetle population over the course of 35 weeks. mRNA transcript levels suggest glycerol production in the mountain pine beetle occurs through glycogenolytic, gluconeogenic and potentially glyceroneogenic pathways, but not from metabolism of lipids...
2017: PeerJ
https://www.readbyqxmd.com/read/28612029/in-vitro-evaluation-of-antimicrobial-activity-of-alimentary-canal-extracts-from-the-red-palm-weevil-rhynchophorus-ferrugineus-olivier-larvae
#2
Gamal H Sewify, Hanan M Hamada, Hani A Alhadrami
The invasive red palm weevil, Rhynchophorus ferrugineus Olivier (Coleoptera: Curculionidae), is considered one of the world's most devastating insect pests to palm trees. It was observed that larvae of this pest are able to inhibit microbial growth on the rearing media when they start feeding and this observation has led us to study the effect of red palm weevils on various microbial species. The antimicrobial effect of extracts from different parts of the alimentary canal on Gram positive bacteria (Enterococcus faecalis and Staphylococcus aureus), Gram negative bacteria (Escherichia coli and Klebsiella spp...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28610243/first-record-of-the-granulate-ambrosia-beetle-i-xylosandrus-i-i-crassiusculus%C3%A2-i-coleoptera-curculionidae-scolytinae-in-the-iberian-peninsula
#3
Diego Gallego, José Luis Lencina, Hugo Mas, Julia Ceveró, Massimo Faccoli
The Granulate Ambrosia Beetle Xylosandrus crassiusculus, an alien species of Asian origin, was recorded for first time in the Iberian Peninsula. Many specimens were collected in October 2016 in the Valencia region (Spain) from infested carob trees. The species is included in the EPPO Alert List as causing serious damage in many Mediterranean regions. A key for the morphological identification of the Xylosandrus species occurring in Europe is also reported.
June 6, 2017: Zootaxa
https://www.readbyqxmd.com/read/28609962/-i-macrocyrtus-i-i-imomzodai-i-bar%C3%A5-evskis-2016-a-new-synonym-of-i-metapocyrtus-i-i-orthocyrtus-i-i-orbiferoides-i-schultze-1918-coleoptera-curculionidae-entiminae
#4
Hiraku Yoshitake
Metapocyrtus (Orthocyrtus) orbiferoides Schultze, 1918 was described based on the female holotype collected from Ilocos Norte, North Luzon, Philippines. Since that time, it has been left unstudied for almost a century until I examined the holotype of M. (O.) orbiferoides in 2010 at Senckenberg Naturhistorische Sammlungen, Museum für Tierkunde, Dresden (SMTD). Recently, Barševskis (2016) described Macrocyrtus imomzodai based on two female specimens from Ilocos Norte, Luzon. Judging from the original description and dorsal and lateral habitus images, it is quite apparent that M...
April 18, 2017: Zootaxa
https://www.readbyqxmd.com/read/28609889/a-new-species-of-eupholus-boisduval-from-west-new-guinea-coleoptera-curculionidae
#5
Alexander Riedel, Thierry Porion
Eupholus Boisduval is outstanding among weevils for its large body size and splendid coloration. Nevertheless, some species have eluded discovery until recently. Here we describe E. marielaurae sp. n. from the Arfak Mountains of West New Guinea. We provide morphological and molecular characters to differentiate it from E. cuvierii (Guérin-Méneville).
May 8, 2017: Zootaxa
https://www.readbyqxmd.com/read/28609884/new-species-of-narberdia-burke-from-m%C3%A3-xico-and-central-america-coleoptera-curculionidae
#6
Macotulio Soto-Hernández
Four new species of the previously monotypic genus Narberdia Burke are described. All of them are intimately associated with plants of the genus Bernardia (Euphorbiaceae). Narberdia cervantae Soto-Hernández, new species (México, Jalisco on Bernardia spongiosa McVaugh), N. sarukhani Soto-Hernández, new species (México, Veracruz and Costa Rica on B. mexicana (Hook. & Arn.) Müll. Arg. and B. nicaraguensis Standl. & L.O. Williams), N. dugesi Soto-Hernández (México, Querétaro and Michoacán on B. mexicana and B...
May 8, 2017: Zootaxa
https://www.readbyqxmd.com/read/28609879/a-revision-of-the-new-zealand-weevil-genus-irenimus-pascoe-1876-coleoptera-curculionidae-entiminae
#7
Samuel D J Brown
The taxonomy of the New Zealand weevil genus Irenimus Pascoe, 1876 is revised, resulting in a narrower concept of the genus than has been considered in recent decades. In total, the genus now contains only seven species. In addition to the type species, I. parilis Pascoe, 1876, the genus contains I. duplex (Broun, 1904) and five newly described species: I. aniptus new species (type locality, Oamaru, DN), I. crinitus new species (type locality, Hakataramea Valley, SC), I. minimus new species (type locality, Alexandra, CO), I...
May 8, 2017: Zootaxa
https://www.readbyqxmd.com/read/28609448/%C3%AE-copaene-is-an-attractant-synergistic-with-quercivorol-for-improved-detection-of-euwallacea-nr-fornicatus-coleoptera-curculionidae-scolytinae
#8
Paul E Kendra, David Owens, Wayne S Montgomery, Teresa I Narvaez, Gary R Bauchan, Elena Q Schnell, Nurhayat Tabanca, Daniel Carrillo
The tea shot-hole borer, Euwallacea fornicatus Eichhoff, is an ambrosia beetle endemic to Asia and a pest of commercial tea, Camellia sinensis (L.) Kuntze. Recently, a complex of species morphologically similar to E. fornicatus has been recognized, which includes new pests established in Israel and the USA, both in California and Florida. Collectively termed E. nr. fornicatus, these cryptic species carry symbiotic Fusarium spp. fungi, some of which cause dieback disease in susceptible hosts, which include avocado, Persea americana Miller...
2017: PloS One
https://www.readbyqxmd.com/read/28578717/biological-traits-and-the-complex-of-parasitoids-of-the-elm-pest-orchestes-steppensis-coleoptera-curculionidae-in-xinjiang-china
#9
Q Li, S V Triapitsyn, C Wang, W Zhong, H-Y Hu
The flee-weevil Orchestes steppensis Korotyaev (Coleoptera: Curculionidae) is a steppe eastern Palaearctic species, notable as a serious pest of elms (Ulmus spp., Ulmaceae), by feeding on the leaves (adults) or mining them heavily (larvae), especially of Ulmus pumila L. in Xinjiang, China. We have corrected the previous misidentifications of this weevil in China as O. alni (L.) or O. mutabilis Boheman and demonstrated that it is likely to be an invasive species in Xinjiang. Prior to this study, natural enemies of O...
June 5, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28575468/evaluation-of-lure-combinations-containing-essential-oils-and-volatile-spiroketals-for-detection-of-host-seeking-xyleborus-glabratus-coleoptera-curculionidae-scolytinae
#10
D Owens, Wayne S Montgomery, Teresa I Narvaez, Mark A Deyrup, Paul E Kendra
The invasive redbay ambrosia beetle, Xyleborus glabratus Eichhoff (Coleoptera: Curculionidae: Scolytinae), vectors the fungal pathogen (Raffaelea lauricola) that causes laurel wilt, a disease responsible for widespread mortality of trees in the Lauraceae in the southeastern United States. Early detection of incipient vector populations may allow for management practices that could successfully mitigate damage. Developing new, highly effective attractants is a priority for improving sensitivity of early detection efforts...
June 1, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28556365/identification-and-expression-profiling-of-novel-plant-cell-wall-degrading-enzymes-from-a-destructive-pest-of-palm-trees-rhynchophorus-ferrugineus
#11
B Antony, J Johny, S A Aldosari, M M Abdelazim
Plant cell wall degrading enzymes (PCWDEs) from insects were recently identified as a multigene family of proteins that consist primarily of glycoside hydrolases (GHs) and carbohydrate esterases (CEs) and play essential roles in the degradation of the cellulose/hemicellulose/pectin network in the invaded host plant. Here we applied transcriptomic and degenerate PCR approaches to identify the PCWDEs from a destructive pest of palm trees, Rhynchophorus ferrugineus, followed by a gut-specific and stage-specific differential expression analysis...
May 27, 2017: Insect Molecular Biology
https://www.readbyqxmd.com/read/28541523/attraction-of-the-euwallacea-sp-near-fornicatus-coleoptera-curculionidae-to-quercivorol-and-to-infestations-in-avocado
#12
John A Byers, Yonatan Maoz, Anat Levi-Zada
The Euwallacea sp. near fornicatus (Euwallacea sp. 1 hereafter) feeds on many woody shrubs and trees and is a pest of avocado, Persea americana Mill., in several countries including Israel and the United States. Quercivorol baits are commercially available for Euwallacea sp. 1 females (males do not fly), but their attractive strength compared to other pheromones and potential for mass trapping are unknown. We used sticky traps baited with quercivorol released at 0.126 mg/d (1×) and at 0.01×, 0.1×, and 10× relative rates to obtain a dose-response curve of Euwallacea sp...
May 24, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28540532/first-occurrence-of-sternochetus-mangiferae-fabricius-coleoptera-curculionidae-in-brazil
#13
A C Silva, M P Ricalde
Specimens of the mango stone weevil Sternochetus mangiferae (Fabricius) (Coleoptera: Curculionidae) were found in fruits of mango from a tree in the residential area of the Rio de Janeiro, RJ. This is the first report of the S. mangiferae in Brazil, currently regulated as an absent quarantine pest in the country. A taxonomist specialized in Curculionidae confirmed the identification based on morphological diagnostics characteristics. This detection is a relevant finding, because Brazil is a major producer and exporter of mango and the main areas of mango for exportation are located very far from this detection point...
May 24, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28535265/physiology-of-cold-hardiness-seasonal-fluctuations-and-cryoprotectant-contents-in-overwintering-adults-of-hypera-postica-coleoptera-curculionidae
#14
Mahdieh Saeidi, Saeid Moharramipour
The alfalfa weevil, Hypera postica (Gyllenhal), is widely distributed in various alfalfa-growing regions in the world. Adults enter the field gradually from hibernation places and overwinter in a nondiapausing state, exhibiting feeding, mating, and oviposition over autumn and winter whenever the weather permits. In this study, the variability of supercooling point (SCP) and cold hardiness in alfalfa weevil was investigated. Adults were collected monthly from alfalfa fields in Karaj, Iran, during autumn, winter, and spring in 2011-2012...
May 23, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28495035/selection-of-bacillus-thuringiensis-strains-toxic-to-cotton-boll-weevil-anthonomus-grandis-coleoptera-curculionidae-larvae
#15
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
#16
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
#17
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...
June 1, 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
#18
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
#19
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
#20
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...
June 1, 2017: Journal of Economic Entomology
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