Science topic

Arthropods - Science topic

Members of the phylum Arthropoda of the animal kingdom, composed of organisms having a hard, jointed exoskeleton and paired jointed legs, and including among other classes, the ARACHNIDA and INSECTS, many species of which are important medically as parasites or as vectors of organisms capable of causing disease in man. (Dorland, 27th ed)
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Publications related to Arthropods (10,000)
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Artificial diets promised an economical way to mass-produce entomophagous arthropods for augmentative biological control. To date this promise generally has not been fulfilled and most of the commercial mass production of entomophagous arthropods is accomplished in vivo. Although many successful artificial diets have been published, these diet form...
Article
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Collembola are soil-dwelling arthropods that play a key role in the soil ecosystem. Allonychiurus kimi (Lee) (Collembola: Onychiuridae) was isolated from the natural environment and has been maintained for 20 years under laboratory conditions. Though the morphological and physiological features of A. kimi are being widely used to evaluate the impac...
Article
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Background Climate is one of the most important driving factors of future changes in terrestrial, coastal, and marine ecosystems. Any changes in these environments can significantly influence physiological and behavioural responses in aquatic animals, such as crustacea. Crustacea play an integral role as subsistence predators, prey, or debris feede...
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Background The entomopathogenic nematodes (EPNs), especially in the 2 families Steinernematidae and Heterorhabditidae, are important biocontrol agents against insect pests. The leaf miners (Fam.: Agromyzidae) are cosmopolitan insect pests. There are more than 330 Liriomyza spp. including more than 20 species that have been reported as economically...
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Fire is a natural agent with a paramount role in ecosystem functioning and biodiversity maintenance. Still, it can also act as a negative force against many ecosystems. Despite some knowledge of the interactions of fire and vegetation, there is no clear understanding of how different components of fire regimes (i.e., severity, history, or frequency...
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Objective To perform a molecular screening to detect infections by the mayaro virus and possible coinfections with Chikungunya during an outbreak in the state of Tocantins/Brazil in 2017. Results Of a total 102 samples analyzed in this study, 6 cases were identified with simultaneous infection between mayaro and chikungunya viruses (5.88%). In the...
Article
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The Cape Floristic Region in the Republic of South Africa is a well-recognized hotspot of biodiversity. Although this region is mostly known for its high level of plant diversity and endemicity, it also hosts an understudied and likely diverse arthropod fauna. Here we investigate the evolutionary history and timing of diversification of the apterou...
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Sunscreen use has increased in recent years, as sunscreen products minimize the damaging effects of solar radiation. Active ingredients called ultraviolet (UV) filters or UV agents, either organic or inorganic, responsible for defending skin tissue against harmful UV rays, are incorporated in sunscreen formulations. UV agents have a serious impact...
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Background: Venomous arthropods are arthropod species that use toxins for defense and offense. The objective of this study was to assess the biodiversity and abundance of venomous arthropods on the premises of Nnamdi Azikiwe University (NAU), Awka, Nigeria. Materials and Methods: Pitfall traps, sticky, and bait traps, beating and knockdown, and act...
Article
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Explorations of predatory spiders were carried out from sprayed and unsprayed cotton crop grown at Central Cotton Research Institute Sakrand, Sindh-Pakistan during the period of May-October 2016 and 2017. During the research findings eight species of predatory spiders were explored and identified from cotton field which were Philodromus cespitum, T...
Article
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The growth of urban landscapes has genarally reduced biodiversity worldwide. Invertebrates have explored different environments, and it usually takes different sampling techniques to get a representative sample of the species assemblage in a given location. Some studies have sought to determine the minimum necessary number of sampling techniques, i...
Article
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Climate change already challenges people's livelihood globally and it also affects plant health. Rising temperatures facilitate the introduction and establishment of unwanted organisms, including arthropods, pathogens, and weeds (hereafter collectively called pests). For example, a single, unusually warm winter under temperate climatic conditions m...
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Troponin T (TnT) is the thin filament anchoring subunit of troponin complex and plays an organizer role in the Ca²⁺-regulation of striated muscle contraction. From an ancestral gene emerged ~ 700 million years ago in Bilateria, three homologous genes have evolved in vertebrates to encode muscle type-specific isoforms of TnT. Alternative splicing va...
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Invertebrate–microbial associations are widespread in the biosphere and are often related to the function of novel genes, fitness advantages, and even speciation events. Despite ~ 13,000 species of millipedes identified across the world, millipedes and their gut microbiota are markedly understudied compared to other arthropods. Exploring the contri...
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Postmortem interval estimations can be complicated by the inter-individual variation present in human decomposition. Forensic entomologists may especially face challenges interpreting arthropod evidence in scenarios that are not “by the book”, or that vary in unexpected ways. Therefore, it is important to report instances where blow fly colonizatio...
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ABSTRACT. A study of the jumping spider genus Ilargus Simon, 1901 from Argentina, with live colour photographs of all recorded species, is presented. Two new species, I. delnoa sp.n. (#$) and I. carinae sp.n. (#), are described. All the Ilargus species occurring in the country are diagnosed and provided with new geo- graphic records, and a potentia...
Preprint
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For the conservation and community ecology of arthropods and pest controls on terrestrial plants, survey of arthropods is a crucial step. However, efficient surveys are hindered by challenges in collecting small arthropods, and identifying the species. Environmental DNA (eDNA)-based techniques, such as eDNA metabarcording, help overcome these diffi...
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In their pristine state, river landscapes consist of complex mosaics of aquatic and terrestrial habitats. They are highly dynamic and, with their harsh environments, offer living space for many specialists. In the present study, the habitat choice of specialists of the riparian arthropod community was studied on a near-natural stretch of the Upper...
Article
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Coconut crabs Birgus latro have recently been reclassified from Data Deficient to Vulnerable on the IUCN Red List. This is a somewhat unusual case of temporal and spatial information being used to change the IUCN status of an arthropod and it draws attention to the paucity of biological data on most invertebrate species. To be listed, two or more s...
Conference Paper
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Glyphosate is one of the most commonly used herbicide in the world. Effect of Glyphosate on abundance of selected arthropods was studied for a period of three months in the selected site using two different concentrations of Roundup (Glyphosate). After application of Glyphosate, the abundance of all tested arthropods were significantly reduced (p v...
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Transgenic Bacillus thuringiensis (Bt) maize has broad prospects for application in China. Before commercialization, it is necessary to assess possible ecological impacts, including impacts on non-target arthropods (NTAs) in the field. In the present study, transgenic Bt maize expressing cry1Ab/2Aj and its corresponding non-transformed near isoline...
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The black-headed night monkey (Aotus nigriceps) is a predominantly frugivorous nocturnal neotropical primate. As such, records of different dietary items are fundamental. In the present study, we describe the first record of the consumption of Calliandra brevipes inflorescence in the peri-urban, and Cocos nucifera inflorescence, Eugenia uniflora fr...
Article
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The Gigantolaelaps mites (Mesostigmata: Laelapidae) are easily recognized by their large size. In Chile, Gigantolaelaps wolffsohni is the only recognized species Gigantolaelaps and it has only been reported from four localities, always in association with Oligoryzomys longicaudatus. Our research study aimed to contribute to the severely limited inf...
Article
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Phoresy is a widespread phenomenon in mites. It allows mesostigmatid mites that are associated with ephemeral habitats such as mammal dung to travel fast on larger animals that can detect a proper habitat from a greater distance. To address the gap in knowledge on phoresy in these mites, we examined host specificity in phoretic Mesostigmata associa...
Preprint
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Arthropod pests are a major contributor to rice production losses at a global scale and are predicted to increase in severity due to anthropogenic activity. It is generally recognised that an urgent requirement is to understand the genomic basis of crop-insect resistance to develop successful selective crop breeding programs capable of sustainably...
Conference Paper
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Antecedentes y justificación: Las Áreas Marinas Protegidas (AMP) son valiosas estrategias para proteger la biodiversidad y el medio ambiente, así como para restaurar la biodiversidad y la productividad pesquera. Aunque se han desarrollado varias AMP en Chile, una revisión de sus indicadores de éxito es aún limitada. Planteamiento del problema y o...
Article
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Background House mice ( Mus musculus ) are widespread and invasive on many islands where they can have both direct and indirect impacts on native ecological communities. Given their opportunistic, omnivorous nature the consumptive and competitive impacts of house mice on islands have the potential to vary over time in concert with resource availabi...
Article
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Arthropods can be either large or too small to be seen from the microscope. Their legs are jointed and perform a specific function in the soil. Several arthropods have been identified to date. Therefore, it is essential to identify them in a different type of soil. An experiment to quantify the soil arthropods in the urban forests of D.G. Khan was...
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Garlic lost its ability to produce true seeds millennia ago, and today non-fertile commercial cultivars are propagated only vegetatively. Garlic viruses are commonly carried over from one generation of vegetative propagules to the other, while nematodes and arthropods further transmit the pathogens from infected to healthy plants. A recent breakthr...
Preprint
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The Darwin Tree of Life project aims to sequence all described terrestrial and aquatic eukaryotic species found in Britain and Ireland. Reference genome sequences are generated from single individuals for each target species. In addition to the target genome, sequenced samples often contain genetic material from microbiomes, endosymbionts, parasite...
Conference Paper
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Resumo: No presente trabalho, estudou-se a eficácia de compostos bioativos de melaleuca no controle de ácaros rajados do algodoeiro. O experimento foi realizado com os tratamentos de testemunha e dosagens de óleo essencial em 1 e 5 e hidrolato em 10 e 50 mg.ml-1 , livres e nanoencapsulados. Avaliou-se a mortalidade e oviposições em 72 horas com mod...
Article
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Trophic cascades among plants, herbivores, and natural enemies can be affected by agriculture planting shifts from complex (polyculture) to simple (intensive). Yet, the information on regulation of trophic relations in organic agriculture is limited. To address this, we explore the impacts of plant species richness on composition of three functiona...
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Methyl benzoate (MBe), a volatile organic molecule, has been shown to have insecticidal effects on a variety of agricultural, stored products, and urban arthropod pests in recent investigations. However, the toxicity of MBe against nontarget organisms has rarely been investigated. This study investigated the lethal and suble-thal effects of MBe on...
Conference Paper
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The northern bobwhite (Colinus virginianus; hereafter, bobwhite) requires habitat structure and composition with grass cover for nesting, predator avoidance, and thermal refuge and forb cover for feeding on phytophagous arthropods and seeds. During the past 2 decades, many land managers with interest in promoting quail hunting opportunities have re...
Conference Paper
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The Su Marmuri cave is located at 874 m a.s.l. on Tisiddu Mountain (Ulassai). A huge sinkhole, evidence of an ancient water drainage, gives access to a large, mostly horizontal, underground tunnel. The difference in height from the entrance to the sinkhole is ~35 m, and the length of the tunnel is about 900 m. Su Marmuri is a remarkable geoheritage...
Poster
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Tra le varie azioni di studio del territorio e in particolare delle aree protette (Biotopi, Parchi, Riserve, siti Natura 2000), si possono citare numerosi lavori effettuati dal MFSN. Dal 2001 in particolare sono partite le prime indagini sui biotopi regionali (Stoch, 2003), aree protette istituite dalla Regione il cui numero è in costante aumento,...
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Wolbachia are widespread maternally-transmitted bacteria of arthropods that often spread by manipulating their host’s reproduction through cytoplasmic incompatibility (CI). Their invasive potential is currently being harnessed in field trials aiming to control mosquito-borne diseases. Wolbachia genomes commonly harbour prophage regions encoding the...
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Many arthropod species are vulnerable to infection by bacteria that kill the male offspring of their female hosts. These male-killing bacteria (MKB) can greatly impact the ecology and evolution of their hosts, particularly when MKB prevalence is high and persistent through time. However, we still do not have a holistic understanding of the key dete...
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The ability of an off-road robot to traverse obstacles determines whether the robot can complete complex environmental tasks. In order to improve the off-road ability of off-road robots, this paper proposes a new design idea, in which four hub motors are the power system of the robot, the steering system of the robot is composed of a steering machi...
Article
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The ontogenetic sequence of an early Cambrian redlichiid trilobite Bathynotus kueichouensis is presented on the basis of numerous articulated specimens from Guizhou, China. The body regionalization of B. kueichouensis witnessed a wide variation in the morphology of trunk segments between different thoracic regions, referred to as the ‘thoracic regi...
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Prima indagine sulla fauna cavernicola di un ipogeo artificiale dei Colli Albani: il Cunicolo di Fontan Tempesta, Nemi (Lazio) First investigation of the cave fauna of an artificial hypogean in the Colli Albani: the Fontan Tempesta Cuniculus, Nemi (Latium) C. DI RUSSO, M. RAMPINI, C. CHIMENTI RIASSUNTO In questo contributo preliminare è riportato u...
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Insects are groups of arthropods found almost everywhere, including human dwellings. The aim of this study was to investigate species of dipterous biting insects associated with household in Aungwan Adamu community Bali, Taraba state. The insects were collected using CDC light trap placed indoor and outdoor during wet season of the year 2021. Morph...
Preprint
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According to the trophic pyramid, a large array of herbivores (primary consumers) feed an increasingly narrower array of predators, from secondary consumers to top predators. However, the partitioning between herbivory and predation across the animal kingdom has not yet been tested at the global scale. Here, we use a survey of 33,762 animal species...
Article
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Dietary studies are essential to unravel the functioning of ecosystems and ultimately to understand biodiversity. This task, which at first may seem simple, becomes especially complex in those cases of omnivorous species with highly variable diets. In this regard, the emergence of next-generation DNA sequencing methodologies represents a powerful t...
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Fecundity is arguably one of the most important life history traits, as it is closely tied to fitness. Most arthropods are recognized for their extreme reproductive capacity. For example, a single female of the oriental fruit fly Bactrocera dorsalis , a highly invasive species that is one of the most destructive agricultural pests worldwide, can la...
Poster
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Faecal pellets of invertebrates from burial contexts can be used as indicators of textiles and other organic grave goods, even in cases where the actual fabric has already completely decayed. Microscopic bricket-like particles are frequently observed in Ancient Near Eastern burial contexts, such as the Late Bronze Age Royal Tombs of Qaṭna/Tall Miš...
Conference Paper
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Terrestrial cave-fauna are likely affected by the high concentrations of CO2 frequently found in many cave habitats, typically over 10,000 ppm. Furthermore, air composition (radon, CO2) characterizing the whole vadose zone and seasonal changes observed in cave-atmospheres are obvious ecological constraints for troglofauna. Cova de sa Font is a rath...
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Understanding the effects of agricultural practices on farmland biodiversity requires a landscape perspective, as local-scale processes can be influenced by the structure of the surrounding landscape. We assess whether amount of natural vegetation in the landscape interacts with two local-scale variables, in-crop vegetation cover and farming approa...
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Leizhou Bay in Guangdong Province is the most important wintering site in China for the critically endangered Spoon-billed Sandpipers ( Calidris pygmaea ). As food is usually a strong predictor of presence, in the winters of 2019-2022 we studied arthropod food resources and diet on the intertidal mudflats at the Tujiao and Hebei mudflats in Leizhou...
Article
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Warming temperatures are increasing rainfall extremes, yet arthropod responses to climatic fluctuations remain poorly understood. Here, we used spatiotemporal variation in tropical montane climate as a natural experiment to compare the importance of biotic versus abiotic drivers in regulating arthropod biomass. We combined intensive field data on a...
Article
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Animals provide services such as pollination and pest control in cacao agro-forestry systems, but also disservices. Yet, their combined contributions to crop yield and fruit loss are mostly unclear. In a full-factorial field experiment in northwestern Peru, we excluded flying insects, ants, birds and bats from cacao trees and assessed several produ...
Article
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West Nile Virus (WNV), Equine Herpesvirus 1 (EHV-1) and Equine Herpesvirus 4 (EHV-4) are among the important pathogenic viral factors for both domestic and feral horses. This study was carried out to determine the molecular presence of WNV, EHV-1 and EHV-4 infections in feral horses in Konya. Blood samples were taken from 36 horses selected by a ra...
Article
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Synthetic pesticides are extensively and injudiciously applied to control agriculture and household pests worldwide. Due to their high use, their toxic residues have enormously increased in the agroecosystem in the past several years. They have caused many severe threats to non-target organisms, including humans. Therefore, the complete removal of...
Article
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Plant invasions profoundly impact both natural and managed ecosystems, and removal of the invasive plants addresses only part of the problem of restoring impacted areas. The rehabilitation of diverse communities and their ecosystem functions following removal of invasive plants is an important goal of ecological restoration. Arthropod assemblages a...
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This study provides additional morphological information and new illustrations for Amblyseius ishizuchiensis, a predatory mite species previously described from Japan, and subsequently reported from China and Russia. Our examinations on a series of specimens collected from several localities in Russia showed no remarkable difference compared to its...
Article
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Extreme weather events are increasing in frequency and intensity across the Arctic, one of the planet's most rapidly warming regions. Studies from southern latitudes have revealed that the ecological impacts of extreme events on living organisms can be severe and long-lasting, yet data and evidence from within the terrestrial Arctic biome appear un...
Article
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The developmental mode of four redlichiid trilobites is summarized, based upon exceptionally well-preserved, articulated specimens from Cambrian Series 2 (stages 3 and 4) strata in southwestern China and South Australia. These relatively complete developmental sequences indicate a balanced rate in segment increase and addition to the thorax during...
Article
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Background : Dengue is the most important arthropod transmitted human viral disease and constitutes an important worldwide health problem including Bangladesh. Although children are the usual victim of dengue infection, there is paucity of published data regarding its clinical profile and outcome in children in our country. Objective: Now, in case...
Article
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The maternally inherited endosymbiont, Wolbachia, is known to alter the reproductive biology of its arthropod hosts for its own benefit and can induce both positive and negative fitness effects in many hosts. Here, we describe the effects of the maintenance of two distinct Wolbachia infections, one each from supergroups A and B, on the parasitoid h...
Article
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Abstract Environmental stress caused by pollution is often assessed by diversity of macro-invertebrate species in specific aquatic habitat. To find out seasonal fluctuations in various macro-invertebrates communities and different water quality parameters of River Zhob, a research trial was conducted on River Zhob, Balochistan. Samples of macro-inv...
Article
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Zoophytophagous bugs feed on both arthropod pests and plants, and can survive or reproduce solely on particular plants. This characteristic ensures their survival when released as natural enemies when the density of target pests is low. When using zoophytophagous bugs, exotic species or strains should be avoided as biological control agents due to...