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https://www.readbyqxmd.com/read/29145595/synchrony-weather-and-cycles-in-southern-pine-beetle-coleoptera-curculionidae
#1
John D Reeve
Spatial synchrony and cycles are common features of forest insect pests, but are often studied as separate phenomenon. Using time series of timber damage caused by Dendroctonus frontalis Zimmermann (Coleoptera: Curculionidae) (southern pine beetle) in 10 states within the southern United States, this study examines synchrony in D. frontalis abundance, the synchronizing effects of temperature extremes, and the evidence for shared cycles among state populations. Cross-correlation and cluster analyses are used to quantify synchrony across a range of geographic distances and to identify groups of states with synchronous dynamics...
November 14, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/29145387/beetle-resurrection
#2
Hannah Nordhaus
No abstract text is available yet for this article.
November 14, 2017: Scientific American
https://www.readbyqxmd.com/read/29145143/biodegradation-of-polystyrene-wastes-in-yellow-mealworms-larvae-of-tenebrio-molitor-linnaeus-factors-affecting-biodegradation-rates-and-the-ability-of-polystyrene-fed-larvae-to-complete-their-life-cycle
#3
Shan-Shan Yang, Anja Malawi Brandon, James Christopher Andrew Flanagan, Jun Yang, Daliang Ning, Shen-Yang Cai, Han-Qing Fan, Zhi-Yue Wang, Jie Ren, Eric Benbow, Nan-Qi Ren, Robert M Waymouth, Jizhong Zhou, Craig S Criddle, Wei-Min Wu
Commercial production of polystyrene (PS) -a persistent plastic that is not biodegradable at appreciable rates in most environments-has led to its accumulation as a major contaminant of land, rivers, lakes, and oceans. Recently, however, an environment was identified in which PS is susceptible to rapid biodegradation: the larval gut of Tenebrio molitor Linnaeus (yellow mealworms). In this study, we evaluate PS degradation capabilities of a previously untested strain of T. molitor and assess its survival and PS biodegradation rates for a range of conditions (two simulated food wastes, three temperatures, seven PS waste types)...
October 23, 2017: Chemosphere
https://www.readbyqxmd.com/read/29145003/the-importance-of-saprinus-semistriatus-coleoptera-histeridae-for-estimating-the-minimum-post-mortem-interval
#4
I Szelecz, N Feddern, C V W Seppey, J Amendt, E A D Mitchell
In forensic science, the use of entomological evidence to estimate the minimum post-mortem interval can be crucial. However, not all cadaver-visiting insects are equally useful. Our focus is on the histerid beetle Saprinus semistriatus (Scriba 1790) (Histeridae; Coleoptera). Histeridae are common predators that feed mainly on dipteran larvae on carrion and dung. We review 23 publications mentioning this species and provide new experimental data on its temporal pattern beneath and on hanging pig cadavers. In a field experiment near Neuchâtel, Switzerland, we recorded the abundance of S...
November 10, 2017: Legal Medicine
https://www.readbyqxmd.com/read/29142115/males-harm-females-less-when-competing-with-familiar-relatives
#5
Samuel J Lymbery, Leigh W Simmons
Sexual conflict occurs when reproductive partners have different fitness optima, and can lead to the evolution of traits in one sex that inflict fitness costs on the opposite sex. Recently, it has been proposed that antagonism by males towards females should be reduced when they compete with relatives, because reducing the future productivity of a female would result in an indirect fitness cost for a harmful male. We tested this prediction in the seed beetle Callosobruchus maculatus, the males of which harm females with genital spines and pre-copulatory harassment...
November 29, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/29142016/multi-scale-tarsal-adhesion-kinematics-of-freely-walking-dock-beetles
#6
Sophie Marie Gernay, Simon Labousse, Pierre Lambert, Philippe Compère, Tristan Gilet
In this experimental study, living dock beetles are observed during their free upside-down walk on a smooth horizontal substrate. Their weight is balanced by the adhesion of hairy structures present on their tarsomeres. The motions involved in the attachment and detachment of these structures were characterized by simultaneously imaging the beetle from the side at the body scale, and from the top at the scale of a single tarsal chain. The observed multi-scale three-dimensional kinematics of the tarsi is qualitatively described, then quantified by image processing and physically modelled...
November 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/29140770/specificity-and-genetic-diversity-of-xylose-fermenting-scheffersomyces-yeasts-associated-with-small-blue-stag-beetles-of-the-genus-platycerus-in-east-asia
#7
Masahiko Tanahashi, Jong-Kuk Kim, Kana Watanabe, Takema Fukatsu, Kôhei Kubota
Among insect-fungus relationships, xylose-fermenting Scheffersomyces yeasts are well known for their potential in utilizing wood hemicelluloses and their association with various wood-feeding insects. However, their specificity to host insects or strain-level diversity within host species has not been clearly elucidated. In the insect family Lucanidae, larvae usually feed on decaying wood, and adult females consistently possess a fungus-storage organ, called the mycangium, near the abdominal tip. Here the authors investigated host-symbiont relationships between Scheffersomyces yeast symbionts and small blue stag beetles of the genus Platycerus (Coleoptera: Lucanidae) in East Asia by using intergenic spacer (IGS) region as a genetic marker...
November 9, 2017: Mycologia
https://www.readbyqxmd.com/read/29136536/on-the-bright-side-of-a-forest-pest-the-metabolic-potential-of-bark-beetles-bacterial-associates
#8
Anna Fabryová, Martin Kostovčík, Alexandra Díez-Méndez, Alejandro Jiménez-Gómez, Lorena Celador-Lera, Zaki Saati-Santamaría, Hana Sechovcová, Esther Menéndez, Miroslav Kolařik, Paula García-Fraile
Bark beetles reproduce and overwinter under the bark of trees, and are associated with bacteria that may influence the fitness of their hosts. As regard the aim of this study was to test the metabolic potential of bacterial strains, isolated from the bark beetle species Cryphalus piceae, Ips typographus and Pityophthorus pityophthorus and collected in the Czech Republic from fir, spruce and pine trees, respectively, to degrade plant cell compounds. The bacterial strains were identified as belonging to the genera Curtobacterium, Erwinia, Pantoea, Pseudomonas, Rahnella, Staphylococcus, and Yersinia...
November 11, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29135952/integrated-pest-management-of-coffee-berry-borer-in-hawaii-and-puerto-rico-current-status-and-prospects
#9
Luis F Aristizábal, Melissa Johnson, Suzanne Shriner, Robert Hollingsworth, Nicholas C Manoukis, Roxana Myers, Paul Bayman, Steven P Arthurs
The coffee berry borer (CBB), Hypothenemus hampei, is the most significant insect pest of coffee worldwide. Since CBB was detected in Puerto Rico in 2007 and Hawaii in 2010, coffee growers from these islands are facing increased costs, reduced coffee quality, and increased pest management challenges. Here, we outline the CBB situation, and summarize the findings of growers, researchers, and extension professionals working with CBB in Hawaii. Recommendations for the Integrated Pest Management (IPM) program for CBB in Hawaiian Islands and Puerto Rico include: (1) establish a CBB monitoring program, (2) synchronize applications of insecticides with peak flight activity of CBB especially during the early coffee season, (3) conduct efficient strip-picking as soon as possible after harvest and perform pre-harvest sanitation picks in CBB hotspots if needed, (4) establish protocols to prevent the escape of CBB from processing areas and when transporting berries during harvest, and (5) stump prune by blocks...
November 14, 2017: Insects
https://www.readbyqxmd.com/read/29134142/assemblage-and-functional-categorization-of-dung-beetles-coleoptera-scarabaeinae-from-the-pantanal
#10
Marcelo B Pessôa, Thiago J Izzo, Fernando Z Vaz-de-Mello
The Pantanal is one of the world's largest tropical wetland areas and harbors high mammal biomass. There is no formal list of dung beetle species, and studies on their functional roles have never being carried out in Pantanal. In this study, we identified dung beetle species occurring in the north Pantanal region (Poconé sub-region, Brazil) and studied their functional organization, by measuring morphological, behavioral and phenological traits. We collected 25,278 individuals belonging to 17 genera and 35 species...
2017: PeerJ
https://www.readbyqxmd.com/read/29134103/allometry-of-wing-twist-and-camber-in-a-flower-chafer-during-free-flight-how-do-wing-deformations-scale-with-body-size
#11
Yonatan Meresman, Gal Ribak
Intraspecific variation in adult body mass can be particularly high in some insect species, mandating adjustment of the wing's structural properties to support the weight of the larger body mass in air. Insect wings elastically deform during flapping, dynamically changing the twist and camber of the relatively thin and flat aerofoil. We examined how wing deformations during free flight scale with body mass within a species of rose chafers (Coleoptera: Protaetia cuprea) in which individuals varied more than threefold in body mass (0...
October 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/29134010/nornalup-a-new-genus-of-pselaphine-beetle-from-southwestern-australia-coleoptera-staphylinidae-pselaphinae-faronitae
#12
Jong-Seok Park, Donald S Chandler
A new genus and three new species of the southwestern Australian pselaphine beetles belonging to the supertribe Faronitae are described: Nornalup Park & Chandler, gen. n., based on Nornalup afoveatus Park & Chandler, sp. n., Nornalup quadratus Park & Chandler, sp. n., and Nornalup minusculus Park & Chandler, sp. n. Illustrations of their habitus and major diagnostic characters are provided, as well as distribution maps and a key to species.
2017: ZooKeys
https://www.readbyqxmd.com/read/29133810/selectivity-and-ligand-based-molecular-modeling-of-an-odorant-binding-protein-from-the-leaf-beetle-ambrostoma-quadriimpressum-coleoptera-chrysomelidae-in-relation-to-habitat-related-volatiles
#13
Yinliang Wang, Yincan Jin, Qi Chen, Ming Wen, Hanbo Zhao, Hongxia Duan, Bingzhong Ren
In this study, the most abundant and antenna-specific odorant-binding protein (OBP) of the elm pest A. quadriimpressum, AquaOBP4, was expressed and purified. The selectivity of AquaOBP4 was investigated by screening against a panel of 40 habitat-relevant compounds. Based on the obtained results, a homologous model of AquaOBP4 was established. This model indicated that AquaOBP4 is highly homologous to DmelOBP LUSH and includes two main binding sites. A docking analysis showed that four of five active ligands bound at Site 1, whereas the other ligand was situated at Site 2...
November 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29133804/antennal-transcriptome-analysis-and-expression-profiles-of-olfactory-genes-in-anoplophora-chinensis
#14
Jingzhen Wang, Ping Hu, Peng Gao, Jing Tao, Youqing Luo
Olfaction in insects is essential for host identification, mating and oviposition, in which olfactory proteins are responsible for chemical signaling. Here, we determined the transcriptomes of male and female adult antennae of Anoplophora chinensis, the citrus longhorned beetle. Among 59,357 unigenes in the antennal assembly, we identified 46 odorant-binding proteins, 16 chemosensory proteins (CSPs), 44 odorant receptors, 19 gustatory receptors, 23 ionotropic receptors, and 3 sensory neuron membrane proteins...
November 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29129757/respiration-based-monitoring-of-metabolic-rate-following-cold-exposure-in-two-invasive-anoplophora-species-depending-on-acclimation-regime
#15
M Javal, A Roques, G Roux, M Laparie
The Asian andCitrus longhorned beetles, Anoplophora glabripennis (ALB) and A. chinensis (CLB) respectively, are two closely related invasive species with overlapping native ranges. Although both species have rather similar biological characteristics, they differ in their invasion patterns. ALB shows numerous, but local, outbreaks in urban areas of North-East America, Western andCentral Europe, whereas CLB has colonized a large part of Northern Italy. Temperature is pivotal in setting distribution limits of ectotherms...
November 9, 2017: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/29128770/ivermectin-residues-disrupt-dung-beetle-diversity-soil-properties-and-ecosystem-functioning-an-interdisciplinary-field-study
#16
José R Verdú, Jorge M Lobo, Francisco Sánchez-Piñero, Belén Gallego, Catherine Numa, Jean-Pierre Lumaret, Vieyle Cortez, Antonio J Ortiz, Mattia Tonelli, Juan P García-Teba, Ana Rey, Alexandra Rodríguez, Jorge Durán
Ivermectin is the most common endectocide used to control parasites affecting livestock. Short-term physiological and behavioural effects of ivermectin on dung beetles may have long-term consequences for beetle populations and ecosystem functioning. Long-term effects of the use of ivermectin can be estimated by comparing dung assemblages and ecosystem functions in areas with conventional ivermectin-treated livestock and environmentally similar areas in which livestock are not treated with veterinary medical products (organic farming)...
November 9, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29127731/endoscopic-submucosal-dissection-of-early-gastric-neoplasms-in-the-fornix-using-the-newly-developed-scissors-type-sb-knife-gx
#17
Yuki Sumida, Toshio Kuwai, Sauid Ishaq
Endoscopic submucosal dissection (ESD) using a scissors-type knife, the Stag-Beetle knife (SB knife, Sumitomo Bakelite, Tokyo, Japan), is considered technically easy and safe due to its ability to grasp the target tissue to allow controlled resection without the complex endoscopic tip control required with conventional ESD devices. There are two types of SB knife (short-type and Jr-type), used mainly for esophageal and colorectal neoplasms (1-3). Recently, a new type, SB knife GX, has been developed for gastric ESD...
November 11, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/29126184/bark-and-ambrosia-beetle-curculionidae-scolytinae-diversity-found-in-agricultural-and-fragmented-forests-in-piracicaba-sp-brazil
#18
Carla Sandoval Rodríguez, Anthony I Cognato, Ciro Abbud Righi
Land use changes and forest fragmentation result in biodiversity loss and displacement, with insects among the most affected groups. Among these, bark beetles (Curculionidae: Scolytinae) occupy a prominent position due to their close ties to food resources, i.e., trees, and importance as primary decomposers in forest ecosystems. Therefore, our study aimed to document scolytine biodiversity associated with landscape components that vary based on their physical or botanical composition. Bark beetle diversity was sampled monthly for 12 mo in an Atlantic forest remnant and five adjacent vegetation plots (mixed Agroforestry System-AFS, of native trees and fruit species; AFS of rubber trees and coffee plants; coffee monoculture; rubber monoculture; and pasture)...
November 8, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/29124466/antifungal-activity-of-avocado-rhizobacteria-against-fusarium-euwallaceae-and-graphium-spp-associated-with-euwallacea-spp-nr-fornicatus-and-phytophthora-cinnamomi
#19
Edgar Guevara-Avendaño, Joseph D Carrillo, Cedric Ndinga-Muniania, Kevin Moreno, Alfonso Méndez-Bravo, José A Guerrero-Analco, Akif Eskalen, Frédérique Reverchon
Plant rhizobacteria have been successfully used as biocontrol agents against fungal phytopathogens. However, their potential to control two important avocado diseases, namely Fusarium dieback (FD) and Phytophthora root rot (PRR), has been poorly studied. FD is an emerging disease triggered by fungi associated with two ambrosia beetle species (Euwallacea fornicatus species complex), while PRR is caused by Phytophthora cinnamomi, a soil-borne oomycete. In the present work, the antifungal activity of bacteria isolated from avocado rhizosphere was tested in dual culture assays against Fusarium euwallaceae, Graphium euwallaceae and Graphium sp...
November 9, 2017: Antonie Van Leeuwenhoek
https://www.readbyqxmd.com/read/29121652/risk-of-predation-makes-foragers-less-choosy-about-their-food
#20
Alice Charalabidis, François-Xavier Dechaume-Moncharmont, Sandrine Petit, David A Bohan
Animals foraging in the wild have to balance speed of decision making and accuracy of assessment of a food item's quality. If resource quality is important for maximizing fitness, then the duration of decision making may be in conflict with other crucial and time consuming tasks, such as anti-predator behaviours or competition monitoring. Individuals facing the risk of predation and/or competition should adjust the duration of decision making and, as a consequence, their level of choosiness for resources. When exposed to predation, the forager could either maintain its level of choosiness for food items but accept a reduction in the amount of food items consumed or it could reduce its level of choosiness and accept all prey items encountered...
2017: PloS One
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