Science topic

Beetles - Science topic

INSECTS of the order Coleoptera, containing over 350,000 species in 150 families. They possess hard bodies and their mouthparts are adapted for chewing.
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Background Numerous biotic and abiotic factors are responsible for losses of grains quality and quantity during storage. Insecticides used to control stored grain insect pests are not only hazardous to mammals and environment but also induce resistance in insect pests towards these synthetic chemicals. A current trial was conducted, during 2020, in...
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Background: The Nemestrinidae are a widespread group of moderate to large-sized rather stout flies. All known larvae of these flies are internal parasitoids of nymphs and adults of grasshoppers and larvae of scarabaeid beetles and have the potential to be used as biocontrol agents. Results: All known Egyptian and Saudi Arabian nemestrinid taxa are...
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Objectives Environmental constraints, especially temperature, have been identified as a key in understanding host-symbiont relationships, as they can directly impact the fitness of the symbiont population and the host development. Here we investigated the effect of temperature during the host development on the density of intracellular bacteria of...
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Compared to shade coffee plantations, sun-grown coffee is not considered very biodiversity-friendly, but little is known about how the management practices for this crop and landscape characteristics affect species diversity. Some predatory staphylinids (rove beetles) are important biological control agents in many agricultural systems, but have no...
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Light Detection and Ranging (LiDAR) is a remote sensing technique with multiple uses throughout scientific fields. It can also be used to transfer point data measured in the field to broader spatial scales, which might enable the evaluation of habitats over large areas and define biodiversity hotspots. Our study took place in Cabañeros National Par...
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With the growing demand for food production worldwide, natural landscapes are increasingly being replaced by agricultural areas, which directly affects biodiversity and local ecosystem services. Agroforestry systems, which are the intentional integration of trees and shrubs into crop and animal farming systems, are a more sustainable production app...
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En el presente trabajo se caracteriza la comunidad de visitantes florales de I. triloba en el Cano, La Lisa, La Habana. Se identifican las morfo-especies de visitantes florales, se compara la riqueza y abundancia de los insectos en diferentes horarios y se describen las interacciones de los visitantes con las flores. Se observaron 43 especies de vi...
Experiment Findings
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Anthicidae | Ant-like Flower Beetles | 蟻形甲科 |
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Forests, which account for a third of the world's land surface, are of vital importance for plenty of living organisms as a natural habitat. In addition to economic contribution, a variety of main characteristics, such as biodiversity, erosion prevention, carbon absorption, sustainability of water resources, landscape and aesthetic appearance incre...
Article
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A espécie Anadenanthera colubrina (Vell.) Brenan. (Fabaceae) é conhecida popularmente como angico-branco e está distribuída naturalmente em Minas Gerais. A espécie possui, entre outras utilidades, potencial para uso no paisagismo e na arborização urbana. Os insetos sitófagos, pertencentes a subfamília Bruchinae (Coleoptera: Chrysomelidae), oviposit...
Article
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This study assessed the efficacy of powder and solvent extracts of the leaf and root bark of Calotropis procera and Parquetina nigrescens to repel Callosobruchus maculatus. This was with a view to developing a botanical based repellant for the control of bean weevil in cowpea storage. The powder and solvent extracts of leaf and root bark of C. proc...
Article
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Losses caused by Mylabris pustulata Thunberg in pigeonpea and mungbean at various beetle densities were assessed under net house/caged and field conditions. The observations revealed that the blister beetle caused considerable crop losses to both the pigeonpea and mungbean crops as under net house conditions, M. pustulata Thunberg at 200 beetles/ca...
Preprint
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Some climbing microrobots have been invented based on the locomotions of insects to move on uneven inclines. However, few of them have the steering climbing ability as the unstable force balance may cause the robot's falling from the incline, especially on the mesh incline. Inspired by the beetle claws, we designed a 10-cm hexapod robot with cyclic...
Article
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In industrial, biological, medical and many more scenarios, single-channel blind source separation still remains challenges. A smart universal single-channel blind source separation method, the iterative heuristic general hybrid model with evaluation parameters feedback, Loop-BAS-VMD-ICA, is proposed and verified to recover the original sources aut...
Article
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Food samples are routinely screened for food-contaminating beetles (i.e., pantry beetles) due to their adverse impact on the economy, environment, public health and safety. If found, their remains are subsequently analyzed to identify the species responsible for the contamination; each species poses different levels of risk, requiring different reg...
Article
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The sulfakinin (SK) is an important signal molecule. As a neuromodulator, it mediates a variety of behavioral processes and physiological functions in invertebrates through the interaction with G-protein-coupled receptors (GPCRs). However, there is no report on the functional role of SK in the Chinese white pine beetle, Dendroctonus armandi. We hav...
Article
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The European stag beetle Lucanus cervus has a reportedly long life cycle. Recent rearing trials simulating natural conditions indicate that it can be three to four years. In order to obtain spontaneous field data, two artificial habitats were set-up in 2010. In March a stump was buried on a bed of wood chips and, at the end of June, two piles of fr...
Article
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Mediterranean Basin forest ecosystems are recurrently affected by wildfires. The occurrence of insect pests following fire may be a critical factor affecting tree survival and forest recovery. Although ambrosia beetles are viewed with increasing concern, information about the host selection and colonization behavior of these beetles in Mediterranea...
Article
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In this study, the contact toxicity of spinetoram on three different surfaces, concrete, ceramic floor tile and laminate flooring, against Acanthocelides obtectus (Say.) (Coleoptera: Chrysomelidae) was evaluated in laboratory bioassays. Different concentrations were evaluated ranging from 0.0025 to 0.05 mg AI/cm2, against adults of A. obtectus. Adu...
Article
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Senescence occurs because of the decline of the strength of selection with age, allowing late-life reduced performances not being counter selected. From there, several phenomena may explain late-life reduced performances, such as the accumulation of deleterious mutations, the expression of pleiotropic genes or the existence of resource trade-offs b...
Article
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The bamboo weevil beetle, Cyrtotrachelus buqueti, has evolved a particular flight pattern. When crawling, the beetle folds the flexible hind wings and stuffs under the rigid elytra. During flight, the hind wings are deployed through a series of deployment joints that are passively driven by flapping forces. When the hind wings are fully expanded, t...
Article
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A saproxylic beetles inventory in the canton of Fribourg have revealed 86 emblematic species and 132 first cantonal records. − Between 2018 and 2020, 49 flight interception traps were set from March to September in the forests of the Prealps of the canton of Fribourg, with the aim to increase knowledges about saproxylic beetles in this area. These...
Article
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The first step in monitoring and management of any taxa includes resolving taxonomic ambiguities which complicate the identification of its management units. One of the long-standing issues in saproxylic beetle taxonomy includes the case of Morimus asper (Sulzer, 1776) species complex, which comprises several protected taxa. An integrative approach...
Article
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The locusts Oedales asiaticus (Bey-Bienko) and Myrmeleotettix palpalis (Zubovski) (Orthoptera Acrididae) and the leaf beetle Galeruca daurica (Joannis) (Coleoptera, Chrysomelidae) are economically devastating insect species in the desert steppes of Northern China. Control is mainly and frequently dependent on highly toxic chemicals. To date, there...
Article
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Coleoptera fauna in Baghdad Campus was investigated from July 2020 to April 2021. Three habitats, by. Interdunal sandy area, core desert area, and area in and around hostel were named as H-1, H-2 and H-3 respectively. Techniques like hand picking, plant jerking and pitfall trapping were adopted for sampling in order to explore distribution and dive...
Chapter
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There are different insect pests that attack potato production. A brief introduction to insects, their nature of the damage, and potential management measures are discussed in this chapter in the Nepali language. The important insect pest of potato in Nepal include aphids, cutworm, red ant, spotted beetle, and different caterpillars, potato tuber m...
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This paper provides an analysis of the rare and important Natura 2000 species Carabus zawadzkii in terms of its ecological niche, conservation status and relationship with other Carabus species in carabid assemblages. Published sources are inconsistent in defi ning the habitats in which this species occurs. Therefore, a large part of this paper is...
Article
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Abstract: First record of Silvanus recticollis Reitter, 1876 (Coleoptera: Silvanidae) in Switzerland. − Four individuals of Silvanus recticollis were captured in 2020 using an interception trap in a forest edge (beech forest) in the western region of the canton of Vaud. The trap was located close to numerous stored hardwood and coniferous logs. Thi...
Article
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This paper summarises research on interactions between beetles and fleshy macromycetes in the Pieniny National Park (PNP), S Poland. The field studies were carried out in 2016-2018. Altogether, 197 samples from 103 species of fungi (98 species of Basidiomycota and 5 of Ascomycota) were collected. Data are reported on fungi from various systematic a...
Article
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Two new species of the genus Metapocyrtus Heller, 1912, subgenus Orthocyrtus Heller, 1912 are described and illustrated from southern Mindanao, Philippines: M. (O.) melibengoy sp. nov. and M. (O.) flomlok sp. nov. Another two species were transferred from the subgenus Artapocyrtus Heller, 1912 to Orthocyrtus , namely, M. (O.) willietorresi Cabras &...
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Purpose of Review: Fire and insects are major disturbances in North American forests. We reviewed literature on the effects of fire on bark beetles, defoliators, and pollinators, as well as on the effects of bark beetle and defoliator epidemics on fuels and wildfires. Recent Findings: Fire has direct and indirect effects on insects, but our unders...
Article
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Saprophagous fauna like the oriental edible beetle ( P. brevitarsis ) plays a fundamental role in converting organic wastes into biofertilizer. Accumulating evidence has shown that soil fauna can reduce the abundance of ARGs, although the underlying mechanism of ARG reduction is still unclear.
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Simple Summary: Bean leaf beetles (Ootheca spp.) (Coleoptera: Chrysomelidae) are a major pest of the common bean (Phaseolus vulgaris L.) in Africa, attacking the roots, leaves, floral parts, and young pods, and reducing grain yields significantly. However, there is no comprehensive program for managing bean leaf beetles. In Uganda, farmers typicall...
Article
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The Elateridae family (click beetles) represents a highly diverse lineage that possesses a specialized clicking mechanism to startle predators. At present, however, phylogenetic relationships, especially among recognized subfamilies, remain contentious. Mitochondrial genomes (mitogenomes) can help resolve previously intractable phylogenetic relatio...
Article
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Conglobation is an adaptive behaviour occurring independently in various animal groups. Here, we study the evolution of conglobation in Ceratocanthinae, a beetle group with the ability to roll three body segments into a tight ball. It is here implied that this ability evolved only once in the Mesozoic. Evidence is offered suggesting that the high d...
Chapter
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Forensic Entomology is a new emerging branch of science where insects are used for the criminal investigations such as estimate the time of death (PMI), location of death, nature of death etc. Order Diptera and Coleoptera have insects like flesh flies (Sarcophagidae), green bottle and blue bottle (Calliphoridae) and beetles are attract on dead...
Article
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Weed control relies mainly on integrated control methods of preventive, agricultural and chemical methods. On pasture lands, however, the chemical methods of spraying pesticides in large area is expensive, has negative consequences on ground water, on environment and on health in general. A safer and more cost effective alternative is biocontrol of...
Article
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We analysed the diversity of Cerambycidae in three phytophy-siognomies, one of Cerrado (cerradão) and two of Atlantic Forest (freshwater swamp forest and semideciduous seasonal forest) within the Municipal Botanical Garden of Bauru (central São Paulo State, Brazil), a relevant preservation area. Ceramybycidae, one of the most diverse beetle familie...
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In this study, fifteen species of Gallerucida Motschulsky, 1860 (Coleoptera: Chrysomelidae: Galerucinae), with spotted elytra, from China are reviewed, including one new record: G. balyi (Duvivier, 1885), six new species: G. fortispina Xu & Yang, sp. nov. , G. levifasciata Xu & Nie, sp. nov. , G. nigrovittata Xu & Yang, sp. nov. , G. octodecimpunct...
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Abstract: This study was conducted to evaluate the effect of extracts of Conyza dioscoridis, Cymbopogon citratus and Moringa oleifera on the _ mortality rate of O, surinamensis. The ethanolic extract of C. citratus caused maximum mortality (89.62%), followed by M. oleifera (79.26%). The concentration of 4% the resulted in maximum mortality (88.5%)...
Article
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The species name Cangshanaltica fuanensis, previously published in Ruan et al. (2020), is invalid. In this paper, we described Cangshanaltica fuanensis sp. nov. from Fujian, China in order to fully meet the criteria for the publication of a new species according to the Amendment of the International Code of Zoological Nomenclature (2012).
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As one of the earliest-diverging lineage of the megadiverse beetle suborder Polyphaga, marsh beetles (Scirtidae) are crucial for reconstructing the ancestor of all polyphagan beetles and the ecomorphological underpinnings of their remarkable evolutionary success. The phylogeny of marsh beetles has nonetheless remained challenging to infer, not leas...
Article
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A new genus Luciculio gen. n., belonging to the tribe Embrithini Marshall, 1942 of the curculionid subfamily Entiminae, is described. It includes nine new species, all from the northeastern part of South Africa: Luciculio venda spec. n., type species, L. albuscrocodilus spec. n., L. ramabulanai spec. n., L. rudyardi spec. n., L. schoemani spec. n.,...
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The first fossil cetoniine beetle (Coleoptera: Scarabaeidae) from the Lower Cretaceous Crato Formation of Brazil is reported and illustrated.
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Research on the Arthropoda distribution in temperate forest ecosystems has shown that communities are distributed vertically in unequal numbers. However, this issue still has research gaps in relation to the vertical stratification of Coleoptera in pine forests of the temperate zone. This study was conducted in the Republic of Mordovia situated in...
Article
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The issue of the active spread of tuberculosis throughout the world has been relevant for many decades. Today, the main reason for the spread of the disease is the imperfection of the study of the mechanisms of mycobacteria activity and the lack of a complete understanding of all the existing ways of introducing the pathogen into a safe territory....
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Grasslands in North America have declined by over 70% since industrialization of settlements due to the conversion of natural habitats to cropland and urban centers. In the United States, the federally supported Conservation Reserve Program (CRP) was created to improve water quality, reduce soil erosion, and increase native habitats for wildlife. W...
Poster
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Report topic: Multi-time-scale SOH estimation based on Beetle Antennas Search-Long Short Term Memory (ABS-LSTM) algorithm Reporter: Yangtao Wang Report time: 21:00-21:10 Aug. 2, 2022 (Beijing time) Venue: Tencent conference Meeting link: https://meeting.tencent.com/dm/vxKNm8ycSHDC Meeting number: 734 8832 9117 Members of the ministerial organizatio...
Article
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In many extreme arid ecosystems, insects constitute major faunal components and are key contributors in nutrient cycling. Previous research on xerophily in insects has focused on adult forms. This study investigates skeletomuscular and behavioural adaptations of the Kalahari sandworm beetle larvae (Gonopus tibialis Fabricius) for dwelling in the sa...
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New taxonomic and faunistic data for fifteen species of the tribe of Omaliini McLeay, 1825 from the eastern Palaearctic and Oriental regions are provided. Five species are described and illustrated as new: Carcinocephalus cuccodoroi sp.n. (India: Assam), Paraphloeostiba gracillima sp.n. (Thailand: Chiang Mai), P. moluccensis sp.n. (Indonesia: Yamde...
Article
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Death-feigning behavior is an anti-predatory technique used in several animal taxa and often correlates with inhibited movements (i.e., death-feigning syndrome). We performed a reciprocal crossing among strains exhibiting a genetically longer (L-strain) and shorter (S-strain) duration of death feigning. Then, we investigated related heritable facto...
Article
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Habitat degradation and climate change are main drivers of insect species loss worldwide, raising concern about natural forest replacement by tree monocultures in a context of more frequent disturbances like drought. Carabid beetles are emblematic species in ecology because they are often used as indicators of biodiversity and they have important f...
Article
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Sažetak Agavina pipa, Scyphophorus acupunctatus nađena je na otoku Hvaru na poluotoku Pelegrin te u parkovima grada Hvara i Starigrada, što predstavlja prvi nalaz u Hrvatskoj. Za sada se nije proširila na okolno područje i susjedne gradove, ali s obzirom na to da se prvi simptomi napada vide tek nakon 1 do 2 godine moguće je da je agavina pipa već...
Article
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Longhorn beetles (Cerambycidae) are a diverse family of beetles that can cause considerable damage as forest pests and vectors of pathogens, as well as being important components of forest food webs and ecosystem functionality. In recent years, numerous cerambycid pheromones have been identified, revealing some broad general patterns in functionali...
Article
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Canthon virens (Mannerheim, 1829) (Coleoptera: Scarabaeidae: Scarabaeinae) prey on leaf-cutting ants, using their body for provisioning larvae, as part of the reproductive behavior. Here, we report an observation of a new behavior of C. virens during the predation of Atta laevigata (Smith, 1858) (Hymenoptera: Formicidae) in Southeastern Brazil. We...
Article
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Scanning electron microscopy (SEM) was used to observe the macroscopic, microscopic, and cross‐sectional structures of the claws of Cyrtotrachelus buqueti Guer (Coleoptera: Curculionidae), and a mathematical model of a claw was used to investigate the structure–function relationships. To improve the quality of the SEM images, a non‐local means (NLM...
Article
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Biomass is an important metric for monitoring carabid populations and serves as an ecological indicator. Models that predict carabid weight based on body size represent a simple and straightforward method to estimate biomass and are therefore commonly used. However, such models are rarely evaluated against independent validation data. In this study...
Article
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Neocollyris (Isocollyris) ornata sp. n. is described from southern Vietnam. The differences from both related N. (I.) apiceflava Dheurle, 2017 and N. (I.) sharovae Matalin, 2021 are discussed. A modified key to Vietnamese species of the subgenus Isocollyris Naviaux, 1994 of the genus Neocollyris W. Horn, 1901 is given as well.
Article
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Increasing areas of gradation, making it difficult or impossible to perform restorations and forestations, and as causing tree crown damage, result in the need to intensify monitoring of beetle populations. In order to support control activities, the study assessed the species structure, morphological traits and genetic variation in Melolontha spp....