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Welcome to the Pubget Medical Subject Headings (MESH) browser. Click on a topic or subtopic below to explore related papers. In the gold box is the most recent paper about the current MESH term, and below are 20 related papers.
Arthropods (4):
Recent article
Arthropods
Abstract
We carried out experiments under controlled conditions on young rose plants in order to assess the impact of these indirect interactions on life history traits of three pests: the necrotrophic fungus Botrytis cinerea Pers.: Fr. (Helotiales: Sclerotiniaceae), the aphid Rhodobium porosum Sanderson (He...
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PMID: 21611161
PDF is available here.
PDF is available here.
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Abstract
We were able to examine the impacts of increased plant production, independent of changes in plant composition and/or diversity, on the trophic structure, composition, and diversity of the entire arthropod community. If arthropod species richness increased with greater plant production, we predicted...
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PMID: 21141191
PDF is available here.
PDF is available here.
Abstract
We found that (1) individual tree genotypes supported significantly different arthropod communities, which exhibited broad-sense heritability; (2) these findings were highly repeatable over three consecutive years (repeatability = 0.91) indicating that community responses to individual tree genotype...
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PMID: 21141200
PDF is available here.
PDF is available here.
Abstract
For nearly 100 million years, the India subcontinent drifted from Gondwana until its collision with Asia some 50 Ma, during which time the landmass presumably evolved a highly endemic biota. Recent excavations of rich outcrops of 50-52-million-year-old amber with diverse inclusions from the Cambay S...
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PMID: 20974929
PDF is available here.
PDF is available here.
Abstract
We reconstructed ftz changes in a rigorous phylogenetic context. We found that ftz did not simply switch from Hox-like to segmentation function; rather, ftz is remarkably labile, having undergone multiple changes in sequence and expression. The segmentation LXXLL motif was stably acquired in holomet...
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PMID: 20921393
PDF is available here.
PDF is available here.
Abstract
Abstract
We identified a moisture gradient across home ranges of radio-tracked Northern Waterthrush (Seiurus noveboracensis). We used this gradient to classify habitat types and to examine whether habitat moisture correlates with overwinter mass change and spring departure schedules of Northern Waterthrush o...
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PMID: 21058548
PDF is available here.
PDF is available here.
Toxicology (276)1 2010
Abstract
The essence of the Druckrey-Küpfmüller equation dtn = constant (where d = daily dose and t = exposure time-to-effect, with n > 1) for chemical carcinogens is that the total dose required to produce the same effect decreases with decreasing exposure levels, even though the exposure times required t...
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PMID: 20803795
PDF is available here.
PDF is available here.
Genetika (Moskva) (46)9 2010
Abstract
At the turn of the 21st century, the use of molecular and molecular cytogenetic methods led to revolutionary advances in systematics of insects and other arthropods. Analysis of nuclear and mitochondrial genes, as well as investigation of structural rearrangements in the mitochondrial chromosome con...
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PMID: 21061630
PDF is available here.
PDF is available here.
Parasitology (137)10 2010
Abstract
We asked what are the factors that affect the manifestation and extent of gender-biased parasitism and studied the relationship between parasite-related (mean abundance, mean species richness and total species richness of all parasites), host-related (rodent density and proportion of reproductive ma...
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PMID: 20550754
PDF is available here.
PDF is available here.
Abstract
The effect of ground cover upon the communities of beneficial arthropods established in the canopy of lemon trees was investigated, by comparing three ground-cover management treatments applied: RV, resident vegetation; S, sowed selected species; and BS, bare soil by controlling weeds with herbicide...
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PMID: 20102658
PDF is available here.
PDF is available here.
Parasitology Research (107)3 2010
Abstract
We review the current status and potential functions of miRNAs in protozoan, helminths, and arthropods, and propose some perspectives for future studies....
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PMID: 20532562
PDF is available here.
PDF is available here.
Abstract
We show that the ligand Hedgehog, the receptor Patched, and the transcription factor Gli are all expressed in striped patterns before the morphological appearance of segments in the annelid Platynereis dumerilii. Treatments with small molecules antagonistic to Hedgehog signaling disrupt segment form...
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PMID: 20647470
PDF is available here.
PDF is available here.
Abstract
Abstract
We predict that obstacles are likely to reduce the encounter rate between individuals, leading to a lower attack rate (predator-prey encounters) and a lower interference rate (predator-predator encounters). Here, we test these predictions under controlled conditions using collembolans (springtails)...
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PMID: 20213153
PDF is available here.
PDF is available here.
Abstract
We measured the carbon isotope ratios (delta(13)C) of plant, arthropod, and lizard tissues in the northern Chihuahuan Desert to quantify the relative importance of primary production from plants using C3 and C4 photosynthesis for consumers. Summer monsoonal rains on the Sevilleta Long Term Ecologica...
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PMID: 20583705
PDF is available here.
PDF is available here.
Abstract
We quantified network responses over 7.5 months in large (57 x 57cm) microcosms to test whether grazing shifts the network to a more resilient architecture. Resource limitation constrained any ability to respond at all, with both grazed and ungrazed networks gradually thinning out over time. Added r...
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PMID: 20144724
PDF is available here.
PDF is available here.
Abstract
A 24 year-old patient reported having stepped on a millipede. When examined the patient presented cyanotic and erythematous macules on the first three toes of his right foot, and also complained of local pain and paresthesia, with palpable arterial flows. Millipedes are cylindrical segmented arthrop...
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PMID: 20676478
PDF is available here.
PDF is available here.
Abstract
Filarial nematode species can host Wolbachia bacterial endosymbionts. To understand the symbiosis, a higher level of complexity should be considered, taking in account the tripartite association between Wolbachia, filariae and mammals. This overview article discusses the biology of Wolbachia in fila...
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PMID: 20597434
PDF is available here.
PDF is available here.
Abstract
We added seaweed to six shoreline plots and removed seaweed from six other plots for three months; all plots were repeatedly monitored for 12 months after the initial manipulation. Lizard density (Anolis sagrei) responded rapidly, and the overall average was 63% higher in subsidized than in removal...
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PMID: 20503874
PDF is available here.
PDF is available here.
Abstract
We conducted a long-term field experiment with four maternal genotypes of an infected (E+) native grass (Festuca arizonica) from whence the endophyte was experimentally removed (E-) and water availability was controlled, to test the effects of infection, plant genotype, and resources on abundances,...
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PMID: 20503866
PDF is available here.
PDF is available here.
Toxicological Sciences (115)1 2010
Abstract
We used the uncorrelated shrunken centroid method to classify gene expression profiles of the springtail Folsomia candida exposed to soil spiked with six different metals (barium, cadmium, cobalt, chromium, lead, and zinc). We identified a gene set (classifier) of 188 genes that can discriminate bet...
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PMID: 20133373
PDF is available here.
PDF is available here.
Abstract
Gigantism is widespread among Palaeozoic arthropods, yet causal mechanisms, particularly the role of (abiotic) environmental factors versus (biotic) competition, remain unknown. The eurypterids (Arthropoda: Chelicerata) include the largest arthropods; gigantic predatory pterygotids (...
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PMID: 19828493
PDF is available here.
PDF is available here.
Fungal Biology (114)4 2010
Abstract
Metarhizium anisopliae is an entomopathogenic fungus well characterized for the biocontrol of a wide range of plagues. Its pathogenicity depends on the secretion of hydrolytic enzymes that degrade the host cuticle. To identify proteins involved in the infection process and in host sp...
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PMID: 20943140
PDF is available here.
PDF is available here.
Parasitology (137)4 2010
Abstract
We asked whether the occurrence and the extent of host gender-biased parasitism vary among higher parasite taxa, among individual species within these taxa and within parasite species among localities. To answer this question, we studied prevalence, abundance, species richness and the level of aggre...
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PMID: 19835648
PDF is available here.
PDF is available here.
Environmental Entomology (39)2 2010
Abstract
Methyl salicylate (MeSA) is a common herbivore-induced plant volatile that, when applied to crops, has the potential to enhance natural enemy abundance and pest control. The impacts of MeSA in strawberry were unknown and examined in the spring and midsummer period. Strawberry plots contained no lure...
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PMID: 20388299
PDF is available here.
PDF is available here.
Abstract
The effects of two grazer species (cattle or sheep) and two flock types (single or mixed with goats) on vegetation and arthropod fauna were studied in a factorial design on eight plots which comprised two thirds of mechanically cleared heathland and one third of improved ryegrass-clover grassland. A...
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PMID: 20338541
PDF is available here.
PDF is available here.
Abstract
I combine field experiments, observational data, and path analysis to understand how nonnative grasses impact native arthropod communities in a semiarid shrub system. Theory and correlative evidence predict that decreased shrub growth and nutritional quality, and increased feeding of detrital predat...
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PMID: 20426334
PDF is available here.
PDF is available here.
Abstract
We consider the nature of the last common ancestor of living ecdysozoans through a detailed analysis of palaeoscolecids, an early and extinct group of introvert-bearing worms that have been proposed to be ancestral ecdysozoans. In a review of palaeoscolecid anatomy, including newly resolved details...
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PMID: 20433458
PDF is available here.
PDF is available here.
Abstract
The availability of whole genome sequences of several arthropods has provided new insights into structural cuticular proteins (CPs), in particular the distribution of different families, the recognition that these proteins may comprise almost 2% of the protein coding genes of some species, and the i...
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PMID: 20171281
PDF is available here.
PDF is available here.
Abstract
Many interactions between organisms are based on the emission and perception of volatiles. The principle of using volatile metabolites as communication signals for chemo-attractant or repellent for species-specific interactions or mediators for cell-to-cell recognition does not stop at an apparently...
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PMID: 20012987
PDF is available here.
PDF is available here.
Abstract
We report here genome sequences and comparative analyses of three closely related parasitoid wasps: Nasonia vitripennis, N. giraulti, and N. longicornis. Parasitoids are important regulators of arthropod populations, including major agricultural pests and disease vectors, and Nasonia is an emerging...
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PMID: 20075255
PDF is available here.
PDF is available here.
Abstract
The present study provides data to decide on the most appropriate method for sampling of ground-dwelling arthropods measured in a moist-deciduous forest in the Western Ghats in South India. The abundance of ground-dwelling arthropods was compared among large numbers of samples obtained using pitfall...
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PMID: 20673122
PDF is available here.
PDF is available here.
Fungal Biology (114)11-12 2010
Abstract
We present the effects of different carbon sources such as components of the arthropod cuticle on the secretion of lipolytic enzymes by M. anisopliae. Differences in the induction of lipolytic activity were observed between the several carbon sources tested. Higher activities of lipase or lipase/est...
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PMID: 21036334
PDF is available here.
PDF is available here.
Abstract
We highlight three tributaries of Michaels contribution to evolutionary developmental biology. First, he has made major contributions to our understanding of development of the fruit fly, Drosophila melanogaster. Second, he has maintained a consistent focus on several key problems in evolutionary de...
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PMID: 20209429
PDF is available here.
PDF is available here.
Abstract
We have performed extensive phylogenetic analyses of Dscam from 20 arthropods (each containing between 46 and 96 alternative exons) to reconstruct the detailed history of exon duplication and loss events that built this remarkable system over 450 million years of evolution. Whereas the structure of...
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PMID: 19934230
PDF is available here.
PDF is available here.
Abstract
We present a series of molecular phylogenetic analyses of 88 arthropods, including 57 crustaceans, representing all the major lineages, with Onychophora and Tardigrada as outgroups. Our analyses are based on published and new sequences for two mitochondrial markers, 16S rDNA and cytochrome c oxidase...
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PMID: 19854296
PDF is available here.
PDF is available here.
Abstract
We review issues of myriapod phylogeny, from the position of the Myriapoda amongst arthropods to the relationships of the orders of the classes Chilopoda and Diplopoda. The fossil record of each myriapod class is reviewed, with an emphasis on developments since 1997. We accept as working hypotheses...
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PMID: 19944188
PDF is available here.
PDF is available here.
Abstract
Abstract
We summarize the phylogenetic breadth of knowledge on the Trilobita, and present various hypotheses about phylogenetic patterns within the group, from the highest to the lowest taxonomic levels. Key topics we consider include the question of trilobite monophyly, the phylogenetic position of trilobit...
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PMID: 19854298
PDF is available here.
PDF is available here.
Abstract
Monophyly of Arthropoda is emphatically supported from both morphological and molecular perspectives. Recent work finds Onychophora rather than Tardigrada to be the closest relatives of arthropods. The status of tardigrades as panarthropods (rather than cycloneuralians) is contentious from the persp...
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PMID: 19854297
PDF is available here.
PDF is available here.
Abstract
Abstract
Identifying the unambiguous sister group to the hexapods has been elusive. Traditional concepts include the Myriapoda (the Tracheata/Atelocerata hypothesis), but recent molecular studies consistently indicate it is the Crustacea, either in part or entirety (the Pancrustacea/Tetraconata hypothesis)....
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PMID: 19883792
PDF is available here.
PDF is available here.
Neotropical Entomology (39)4 2010
Abstract
We compare galler abundance (N), equitability (E), species richness (S) and composition between adjacent restinga (xeric) and swamp forests (mesic) in Parque Estadual de Itapeva (29°21' S, 49°45' W), Rio Grande do Sul, southern Brazil. Five trails, two in swamp forest and three in restingas, were...
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PMID: 20877985
PDF is available here.
PDF is available here.
Abstract
Prior to 1993, Bartonella bacilliformis was the only member of the Bartonella genus. Now, the genus Bartonella currently contains over 30 species of Gram-negative bacteria that parasitize mammalian erythrocytes and endothelial cells. Bartonella spp. have been isolated from a variety of mammal specie...
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PMID: 20450002
PDF is available here.
PDF is available here.
Ectoparasites and Associated Pathogens of Free-Roaming and Captive Animals in Zoos of South Carolina
Abstract
A survey of ectoparasites and their associated pathogens was conducted in two South Carolina zoos, from 2004 to 2007. Dead, wild birds and mammals, as well as captive animals examined during routine veterinary checks constituted the study populations. Ectoparasites were tested for sp...
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PMID: 18973443
PDF is available here.
PDF is available here.
Ecological Applications (19)7 2009
Functional richness and ecosystem services: bird predation on arthropods in tropical agroecosystems.
Abstract
We conducted a meta-analysis of the same data to examine whether birds demonstrate functional complementarity in tropical agroforests. We classified birds according to relevant traits (body mass, foraging strategy, foraging Strata, and diet) and then examined how design of functional classification,...
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PMID: 19831075
PDF is available here.
PDF is available here.
The Korean Journal of Parasitology (47 Suppl) 2009
Abstract
Arthropods are important in human health, which can transmit pathogens to humans, parasitize, or produce important allergens. Allergy prevalence becomes higher in Korea recently as well as other developed countries in contrast to a decrease of infectious diseases. Allergic diseases caused by househo...
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PMID: 19885330
PDF is available here.
PDF is available here.
Parasitology (85 (Pt 2))02 2009
Abstract
The paper examines the factors which generate various patterns of dispersion in the distribution of parasites within their host populations. Particular emphasis is placed on the role played by chance elements in the growth and decay of parasite populations and on the influence of different types of...
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PMID: 7145478
PDF is available here.
PDF is available here.
Abstract
As evidence of global changes is accumulating, scientists are challenged to detect distribution changes of vectors, reservoirs and pathogens caused by anthropogenic and/or environmental changes. Statistical and mathematical distribution models are emerging for ixodid hard ticks whereas no prediction...
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PMID: 19839264
PDF is available here.
PDF is available here.
Clinical Toxicology (47)7 2009
Abstract
All patients suffered from pain at the affected sites; other local effects included redness (n = 49, 81.7%), swelling (n = 32, 53.3%), heat (n = 14, 23.3%), itchiness (n = 5, 8.3), and bullae formation (n = 3, 5.0%). Rare systemic effects were reported. All three groups had similar VAS scores before...
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PMID: 19640231
PDF is available here.
PDF is available here.
Abstract
We conducted a series of greenhouse experiments to determine the efficacy and phytotoxicity of an array of plant-derived essential oil products available to consumers on arthropod pests including the citrus mealybug, Planococcus citri (Risso); western flower thrips, Frankliniella occidentalis (Perga...
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PMID: 19736770
PDF is available here.
PDF is available here.
Environmental Entomology (38)4 2009
Abstract
Changes in arthropod fauna assemblages after different goat grazing treatments (breeds and stocking rates) and responses to grazing cessation were studied in a heath-gorse shrubland located in northern Spain. Three treatments (low grazing pressure and high grazing pressure with Cashmere breed and hi...
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PMID: 19689876
PDF is available here.
PDF is available here.
Environmental Entomology (38)4 2009
Abstract
The predatory beetle assemblage of Ontario carrot and sweet potato fields was described and assessed to identify species of interest to the control of the emerging pest millipede Cylindroiulus caeruleocinctus (Wood) (Diplopoda: Julidae). Pterostichus melanarius (Coleoptera: Carabidae) was identified...
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PMID: 19689889
PDF is available here.
PDF is available here.
Environmental Entomology (38)4 2009
Abstract
We examined spatial and temporal variation in striped maple, Acer pensylvanicum, foliar quality and associated patterns in the arthropod community. Variation in herbivore densities was associated more strongly with seasonal variation in plant quality than with spatial variation in quality among thre...
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PMID: 19689895
PDF is available here.
PDF is available here.
Abstract
Exceptional fossil specimens with preserved soft parts from the Maotianshan Shale (ca 520 Myr ago) and the Burgess Shale (505 Myr ago) biotas indicate that the worldwide distributed bivalved arthropod Isoxys was probably a non-benthic visual predator. New lines of evidence come from the functional m...
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PMID: 19403536
PDF is available here.
PDF is available here.
Abstract
We suggest that this knowledge might improve the restoration and conservation of biodiversity....
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PMID: 20120495
PDF is available here.
PDF is available here.
Abstract
We present findings from a meta-analysis examining the strength of the effects of plant genetic introgression and genotypic diversity across individual, community and ecosystem levels with the goal of synthesizing the patterns to date. We found that (i) the strength of plant genetic effects can be q...
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PMID: 19414474
PDF is available here.
PDF is available here.
Abstract
We identify three conditions that, if experimentally satisfied, support the hypothesis that evolution by natural selection can drive ecological changes in communities. These conditions are: (i) a focal population exhibits genetic variation in a trait(s), (ii) there is measurable directional selectio...
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PMID: 19414473
PDF is available here.
PDF is available here.
Abstract
The molecular weight of the group I was 33.1 kD. The inhibitory effect of the group I on Hela cells was obvious, as its inhibitive rate was 60.8% on Hela cells when the polysaccharide's concentration was 3.13 microg/mL, but it had no effect on the Eca 109 cells. CONCLUSION: The group I has specific...
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PMID: 19764321
PDF is available here.
PDF is available here.