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Weevils (0):
Recent article
Weevils
Abstract
Fitness cost is usually associated with insecticide resistance and may be mitigated by increased energy accumulation and mobilization. Preliminary evidence in the maize weevil (Coleoptera: Curculionidae) suggested possible involvement of amylases in such phenomenon. Therefore, alpha-amylases were pu...
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PMID: 20223242
PDF is available here.
PDF is available here.
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Abstract
We have previously demonstrated that this activity harbours four distinctive alpha-mannosidase isoforms named RpltM, RplM1, RplM2 and RplM3. We have extended this work to determine the ability of these enzymes to catalyze synthesis reactions. Finally, we have revealed that, alpha-mannosidases from t...
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PMID: 20033854
PDF is available here.
PDF is available here.
Abstract
The deployment in common beans (Phaseolus vulgaris L.) of arcelin-based bruchid resistance could help reduce post-harvest storage losses to the Mexican bean weevil [(Zabrotes subfasciatus (Boheman)]. Arcelin is a member of the arcelin-phytohemagglutinin-alpha-amylase inhibitor (APA)...
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PMID: 20358173
PDF is available here.
PDF is available here.
Biometrics (66)2 2010
Abstract
We present a new statistical methodology for longitudinal studies in forestry, where trees are subject to recurrent infection, and the hazard of infection depends on tree growth over time. Understanding the nature of this dependence has important implications for reforestation and breeding programs....
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PMID: 19673862
PDF is available here.
PDF is available here.
Abstract
We report on the development of a diagnostic polymerase chain reaction (PCR)-restriction fragment length polymorphism (RFLP) method for differentiation among 16 Otiorhynchus and seven other weevil species independent of their developmental stage. An approximately 780-bp fragment of the mitochondrial...
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PMID: 20568637
PDF is available here.
PDF is available here.
Abstract
We evaluated the effectiveness of two widely used trap types (pyramid versus Circle traps) and commercially available synthetic lures for monitoring the pest in two peach orchards in Alabama during 2008 and 2009. The lures evaluated alone or in combinations included benzaldehyde (BZ) (a component of...
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PMID: 20568620
PDF is available here.
PDF is available here.
Abstract
We compared densities of colonizing adult and immature pea leaf weevils on pea plots grown using conventional tillage and no-tillage. In 2005 and 2006, emergence of adult pea leaf weevil was monitored in the same plots. Densities of colonizing adult and immature pea leaf weevil were significantly hi...
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PMID: 20568614
PDF is available here.
PDF is available here.
Ecological Applications (20)3 2010
Abstract
We developed an invasion model for the Diaprepes root weevil (DRW; Diaprepes abbreviatus [Coleoptera: Curculionidae]), a generalist herbivore that has invaded citrus-growing regions of the United States. We synthesized data on DRW demography and dispersal and generated predictions for asymptotic and...
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PMID: 20437952
PDF is available here.
PDF is available here.
Abstract
We carried out structured host use surveys, farmer surveys, shade-house growth trials and on-farm and on-station impact trials to: (i) estimate the host range of the local Oribius species; (ii) understand adult daily activity patterns; (iii) elucidate feeding habits of the soil dwelling larvae; and...
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PMID: 19366475
PDF is available here.
PDF is available here.
Abstract
We found that six of the 13 chemicals, gamma-terpinene, benzyl alcohol, (Z)-3-hexenyl acetate, myrcene, benzaldehyde, and (Z)-3-hexenal, were attractive to both males and females; two chemicals, (E/Z)-beta-ocimene and (E, E)-alpha-farnesene, were attractive only to males; and four chemicals, (E)-4,8...
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PMID: 20349338
PDF is available here.
PDF is available here.
Abstract
We determined that four major terpene compounds were produced by infested plant roots that were not found in samples from non-infested roots or soil that contained only larvae. Solvent extracts of weevil-infested roots attracted more nematodes than extracts of non-infested roots in a two choice sand...
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PMID: 20309617
PDF is available here.
PDF is available here.
Abstract
In our screening program for new agrochemicals from local wild plants, Artemisia capillaris and A. mongolica were found to possess insecticidal activity against the maize weevil, Sitophilus zeamais. The essential oils of aerial parts of the two plants were obtained by hydrodistillation and were inve...
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PMID: 20428067
PDF is available here.
PDF is available here.
Environmental Entomology (39)2 2010
Abstract
We examined the effects of varying three ingredients of a simplified diet on the weight of adult D. abbreviatus. We used a geometric design combined with response surface models to evaluate the effects of the amount and proportion of diet ingredients to identify optimal diet recipes for normative we...
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PMID: 20388301
PDF is available here.
PDF is available here.
Environmental Entomology (39)2 2010
Abstract
Root-feeding beetles, particularly of the curculionid subfamilies Scolytinae and Molytinae, are known to be effective vectors of Ophiostomatoid fungi. Infestation by these insects and subsequent infection by the Ophiostomatoid fungi may play an important role in accelerating symptom progression in p...
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PMID: 20388270
PDF is available here.
PDF is available here.
Environmental Entomology (39)2 2010
Abstract
We used the culture-independent technique of denaturing gradient gel electrophoresis to visualize bacterial diversity, or individual operational taxonomic units (OTUs), from individual beetles. One-way analysis of similarities was used to test for differences of bacterial communities between sites....
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PMID: 20388269
PDF is available here.
PDF is available here.
Environmental Entomology (39)2 2010
Abstract
We studied the distribution patterns of Wolbachia infection associated with plum curculio strains in eight states of the eastern United States. The presence of the Wolbachia-specific gene wsp identified infections of this endosymbiont in 97.8% of the 93 samples tested. Three distinct Wolbachia strai...
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PMID: 20388268
PDF is available here.
PDF is available here.
Environmental Entomology (39)2 2010
Abstract
We conclude that root deformation does not necessarily increase susceptibility to attack but may increase the likelihood of mortality. Thus, measures to facilitate good root form are needed when planting pine in areas with high risk of Warren root collar weevil attack....
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PMID: 20388277
PDF is available here.
PDF is available here.
Environmental Entomology (39)2 2010
Abstract
We conducted laboratory and field bioassays to characterize the pheromone system of an ash bark beetle, Hylesinus pruinosus Eichhoff (Coleoptera: Curculionidae: Scolytinae). Solitary females in newly initiated galleries in ash logs produced (+)-exo-brevicomin, whereas male beetles paired with female...
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PMID: 20388297
PDF is available here.
PDF is available here.
Abstract
The hemagglutination activities of midgut (MG) fractions of red palm weevil, Rhynchophorus ferrugineus against mammalian erythrocytes (RBC) from man (ABO), rabbit, horse and sheep were studied. The highest titers were seen with rabbit RBC (p < 0.05) followed by human group B, human group O, horse, h...
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PMID: 20464944
PDF is available here.
PDF is available here.
Abstract
We showed that both weevil species exhibited low supercooling points (SCPs) with mean seasonal values below -17 degrees C. Fresh mass, moisture content and sex were not correlated to supercooling ability. Weevils died upon freezing and the lower lethal temperatures (LLT) were within the range of SCP...
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PMID: 19819243
PDF is available here.
PDF is available here.
Abstract
This study was conducted to determine the insecticidal activity of essential oils from oregano, Origanum onites L. (Lamiales: Lamiaceae), savory, Satureja thymbra L. (Lamiales: Lamiaceae), and myrtle, Myrtus communis L. (Rosales: Myrtaceae) against three stored-product insects. Essential oils from t...
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PMID: 20578885
PDF is available here.
PDF is available here.
Abstract
We investigated the bacterial endosymbionts of weevils of the genus Curculio. From all four species of Curculio weevils examined, a novel group of bacterial gene sequences were consistently identified. Molecular phylogenetic analyses demonstrated that the sequences formed a distinct clade in the Gam...
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PMID: 19880647
PDF is available here.
PDF is available here.
Abstract
Our results demonstrate lack of recombination in the nuclear fragment, non-random association between nuclear and mitochondrial genomes and the consequent coevolution of both genomes, being an indirect evidence of apomixis. This weevil is infected by a single Wolbachia strain, which could have cause...
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PMID: 21050430
PDF is available here.
PDF is available here.
Abstract
In our screening program for new agrochemicals from Chinese medicinal herbs, Murraya exotica was found to possess insecticidal activity against the maize weevil, Sitophilus zeamais and red flour beetle, Tribolium castaneum. The essential oil of aerial parts of M. exotica was obtained by hydrodistill...
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PMID: 20736910
PDF is available here.
PDF is available here.
Neotropical Entomology (39)1 2010
Abstract
These results help to explain the survivorship of adult boll weevil during cotton fallow season in Central Brazil and they are discussed in the context of behavioral adaptations to the prevailing tropical environmental conditions....
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PMID: 20305896
PDF is available here.
PDF is available here.
Abstract
The parasitoid mite, Rhynchopolipus rhynchophori was released against the red palm weevil Rhynchophorus ferrugineus stages. Released of this mite applied at four levels of treatment, A (30 parasitic mites: 1 prey), B (60 parasitic mites: 1 prey), C (90 parasitic mites: 1 prey) and D (120 parasitic m...
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PMID: 19795774
PDF is available here.
PDF is available here.
Environmental Entomology (38)4 2009
Abstract
We tested the efficacy of five pathogens over the course of three seasons in 10 Michigan apple and cherry orchards, with introductions of larvae to caged pots containing pathogen-treated soil. The nematode Steinernema riobrave was the most effective pathogen in the 2 yr it was tested, but only in so...
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PMID: 19689891
PDF is available here.
PDF is available here.
Environmental Entomology (38)4 2009
Abstract
We evaluated the host preference and attack of D. rhizophagus under field conditions. We tried to establish any relationship between tree growth or host size and the number of attacking beetles. Generally, only one pair of beetles attacked each of the seedlings regardless of host size; however, a si...
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PMID: 19689900
PDF is available here.
PDF is available here.
Environmental Entomology (38)4 2009
Abstract
We examined the genetic structure of populations of an ambrosia beetle, Xylosandrus brevis (Eichhoff) (Curculionidae: Scolytinae), to understand its colonization dynamics. We collected specimens from 20 sites in Japan and studied the genetic structure of these populations using portions of the mitoc...
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PMID: 19689915
PDF is available here.
PDF is available here.
Environmental Entomology (38)4 2009
Abstract
The spatial influences of host and nonhost trees and shrubs on the colonization patterns of white pine weevil Pissodes strobi (Peck) were studied within a stand of planted interior hybrid spruce [Picea glauca (Moench) Voss x Picea engelmannii (Parry) ex Engelm.]. Planted spruce accounted for one thi...
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PMID: 19689899
PDF is available here.
PDF is available here.
Environmental Entomology (38)4 2009
Abstract
We surveyed larval development in Agapeta zoegana L. and Cyphocleonus achates (Fahraeus), two species of biological control insects introduced from eastern Europe against spotted knapweed in western North America. We dissected spotted knapweed roots collected from five sites in western Montana over...
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PMID: 19689874
PDF is available here.
PDF is available here.
Environmental Entomology (38)4 2009
Abstract
These results were confirmed where, in multiple-choice tests, adults only oviposited on T. sebifera. Given that T. sebifera is the only species in the genus Triadica in the United States, the results of this study suggest that H. bicallosicollis is a potential biological control agent of T. sebifera...
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PMID: 19689892
PDF is available here.
PDF is available here.
Environmental Entomology (38)4 2009
Abstract
We summarize the results of this release effort and quantify the resulting geographic distribution of the herbivores as well as their regional impact on the target weed. A combined total of 3.3 million individual Melaleuca biological control agents have been redistributed to 407 locations and among...
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PMID: 19689893
PDF is available here.
PDF is available here.
Abstract
We investigate an advanced signal parameterization scheme that relies on variable size signal segmentation. The feature vector computed for each segment of the signal is composed of the dominant harmonic, which carry information about the periodicity of the signal, and the cepstral coefficients, whi...
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PMID: 19736784
PDF is available here.
PDF is available here.
Abstract
Results 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 sam...
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PMID: 19736766
PDF is available here.
PDF is available here.
Revue d histoire de la pharmacie (57)362 2009
Abstract
Trehala is a crude drug consisting of the pupal chambers formed by insects belonging to the genus Larinus that live on several Echinops species of the Middle-East. This sweet cocoon is locally used as human food and also for the treatment of cough and various pulmonary diseases. It first appeared in...
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PMID: 20027793
PDF is available here.
PDF is available here.
Antonie Van Leeuwenhoek (96)1 2009
Abstract
We investigated the fungi associated with the mycangia (specialized fungus-transporting structures) of X. mutilatus in Mississippi. Mycangia consistently yielded an Ambrosiella sp. which was subsequently found to be closely related to, but distinct from, other Ambrosiella species affiliated with Cer...
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PMID: 19319658
PDF is available here.
PDF is available here.
Environmental Entomology (38)3 2009
Abstract
We studied the behavioral and antennal responses of adult A. musculus to its host plant volatiles to determine their potential for monitoring this pest. We evaluated A. musculus response to intact and damaged host plant parts, such as buds and flowers in Y-tube bioassays. We also collected and ident...
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PMID: 19508797
PDF is available here.
PDF is available here.
Environmental Entomology (38)3 2009
Abstract
We observed Trichosirocalus horridus Panzer (Coleoptera: Curculionidae), the rosette weevil introduced into North America against Eurasian thistles, feeding on native tall thistle, Cirsium altissimum L. Spreng., in tallgrass prairie. In this study, we examined the rosette weevil's use of tall thistl...
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PMID: 19508782
PDF is available here.
PDF is available here.
Environmental Entomology (38)3 2009
Abstract
The objective of this study was to evaluate the role of host volatiles in the relationship between a blueberry plant Vaccinium corymbosum L. and the raspberry weevil Aegorhinus superciliosus (Guérin) (Coleoptera: Curculionidae), the principal pest of blueberry in the south of Chile. Volatiles fro...
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PMID: 19508787
PDF is available here.
PDF is available here.
Environmental Entomology (38)3 2009
Abstract
Reliable electroantennogram (EAG) responses were obtained from the plum curculio, Conotrachelus nenuphar (Herbst), by using a whole body mount with glass electrodes filled with KCl-saturated AgCl solution that penetrated the antennal club (recording electrode) and the membrane attached to the cervic...
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PMID: 19508798
PDF is available here.
PDF is available here.
Abstract
In 2009, pyrethroid resistance was confirmed for seven "annual bluegrass weevil" Listronotus maculicollis Kirby (Coleoptera: Curculionidae) adult populations from southern New England. The mechanisms responsible for conferring this resistance were unknown. In this study, topical application bioassay...
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PMID: 19610439
PDF is available here.
PDF is available here.
Abstract
Binomial sequential sampling plans were developed to forecast weevil Listronotus maculicollis Kirby (Coleoptera: Curculionidae), larval damage to golf course turfgrass and aid in the development of integrated pest management programs for the weevil. Populations of emerging overwintered adults were s...
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PMID: 19610454
PDF is available here.
PDF is available here.
Abstract
We tested several new systemic insecticides for efficacy against black vine weevil in container-grown Sedum spp. and field-grown Taxus spp. In 2006 and 2007, clothianidin, dinotefuran, and chlorantraniliprole were applied as surface drenches to containerized Sedum plants, and suppression of larval d...
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PMID: 19610404
PDF is available here.
PDF is available here.
Abstract
The hypothesis that herbivory by Diaprepes root weevil larvae reduces leaf gas exchange and biomass was tested on buttonwood (Conocarpus erectus L.), Surinam cherry (Eugenia uniflora L.), mahogany (Swietenia mahagoni Jacq.), and pond apple (Annona glabra L). For Surinam cherry, net CO2 assimilation,...
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PMID: 19610430
PDF is available here.
PDF is available here.
Abstract
We evaluated the relative susceptibility of H. sperata adults to commercially relevant pesticides used in citrus and ornamental production systems. Parasitoids were exposed to pesticide residues on leaf surfaces. Four concentrations of seven pesticides were tested; concentrations for each pesticide...
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PMID: 19610401
PDF is available here.
PDF is available here.
Abstract
A semiochemical-based attractant for the tropical root weevil, Diaprepes abbreviatus L., has been sought since the introduction of this polyphagous pest to Florida in the 1960s. A six-unit wind tunnel apparatus was constructed to allow multiple runs to be conducted simultaneously to test the respons...
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PMID: 19610412
PDF is available here.
PDF is available here.
Ecological Applications (19)3 2009
Population-level compensation by an invasive thistle thwarts biological control from seed predators.
Abstract
We used manipulative experiments with invasive yellow starthistle (YST), Centaurea solstitialis, and its pre-dispersal seed predator biological control agents, primarily Eustenopus villosus, the hairy weevil, and Chaetorellia succinea, the false peacock fly, to explore how these agents affect popula...
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PMID: 19425433
PDF is available here.
PDF is available here.
Environmental Entomology (38)2 2009
Abstract
Summer drought associated with high temperatures recorded in the last few years has given rise to outbreaks of bark beetles developing in weakened host trees. The aim of this study was to investigate the possible weather effect on the biology of and damage caused by Ips typographus L. in the southea...
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PMID: 19389278
PDF is available here.
PDF is available here.
Environmental Entomology (38)1 2009
Abstract
The location of wild and cultivated host plants by pepper weevil (Anthonomus eugenii Cano) may be aided by visual cues, the male-produced aggregation pheromone, herbivore-induced, or constitutive host plant volatiles. The attractiveness of constitutive plant volatiles to pioneer weevils is important...
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PMID: 19791617
PDF is available here.
PDF is available here.
Environmental Entomology (38)1 2009
Abstract
We assessed the interaction occurring between the rice weevil and two storage molds (Aspergillus candidus Link and Aspergillus niger Van Tiegem) that prefer different moisture regimens under rice storage conditions. Rice weevil induced rapid population growth in both of the storage molds. The colony...
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PMID: 19791605
PDF is available here.
PDF is available here.
Environmental Entomology (38)1 2009
Abstract
We studied the possible use of contact pheromones in the mating behavior of the weevil Aegorhinus superciliosus, a native species of Chile. Males mounted females only after antennal contact with the female's cuticle, and only 33% of the males attempted to mate with dead females washed with solvent....
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PMID: 19791614
PDF is available here.
PDF is available here.
Abstract
The pepper weevil, Anthonomus eugenii Cano (Coleoptera: Curculionidae), is a major pest of cultivated peppers (Capsicum spp.) and other cultivated and wild species within the family Solanaceae. Laboratory study of this insect, as well as its biological control agents, will be greatly facilitated by...
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PMID: 19253644
PDF is available here.
PDF is available here.
Comparisons of boll weevil (Coleoptera: Curculionidae) pheromone traps with and without kill strips.
Abstract
We examined the influences of kill strips on weevil captures, trap servicing, and the incidences of weevil predation and trap obstruction (e.g., by spider webs). Evaluations were conducted weekly during three different production periods (pre- to early-, late-, and postseason) of cotton, Gossypium h...
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PMID: 19253635
PDF is available here.
PDF is available here.
Abstract
We sought to determine the species complex, abundance, seasonality, and fecundity of key Sphenophorus spp. from field collections, and quantify duration of developmental and daily activity periods through greenhouse rearing tests. From January 2006 to December 2007, > 18,000 adults of 10 different S...
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PMID: 19253650
PDF is available here.
PDF is available here.
Abstract
Topical application bioassays of bifenthrin and lambda-cyhalothrin were conducted on field-collected populations of Listronotus maculicollis Kirby (Coleoptera: Curculionidae) from eight southern New England golf courses, six in Connecticut, one in Massachusetts, and one in Rhode Island. Concentratio...
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PMID: 19253659
PDF is available here.
PDF is available here.
The Journal of microwave power and electromagnetic energy : a publication of the International Microwave Power Institute (43)4 2009
Abstract
The objective of the research reported here is to investigate the influence of radio-frequency electric fields of high strength on insect mortality. The experiments were accomplished at the frequencies 47.5, 900 and 2,450 MHz for the pulse modulated radiation treatment and the continuous wave RF radi...
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PMID: 21384727
PDF is available here.
PDF is available here.
Environmental Pollution (157)1 2009
Abstract
We conducted two field trials in plots with supplemented UV-B radiation and assessed the influence of feeding by pine weevils, Hylobius abietis L., on volatile emissions from 3-year old Norway spruce trees (Picea abies L. Karst.). We collected emissions from branch tips distal to the feeding weevils...
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PMID: 18775595
PDF is available here.
PDF is available here.
Clinical Microbiology and Infection (15 Suppl 1) 2009
Abstract
We need to understand what happens at the beginning of the adaptative process towards an obligate mutualistic relationship. For this purpose, we propose to sequence the complete genome of SOPE, the primary endosymbiont of the rice weevil....
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PMID: 19220345
PDF is available here.
PDF is available here.
Neotropical Entomology (38)3 2009
Abstract
Insect-pest mobility can influence insect susceptibility to the insecticides used to control them. The objective of this work was to evaluate the flight activity of Sitophilus oryzae (L) and Sitophilus zeamais Motsch populations reared on corn and wheat grains, and its relationship with insecticide...
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PMID: 19618059
PDF is available here.
PDF is available here.