91 research outputs found
New Host-plant Records For Neotropical Agromyzids (diptera: Agromyzidae) From Asteraceae Flower Heads
Agromyzidae is a large and cosmopolitan fly family with approximately 2,500 known species. Here we present 22 new records of agromyzid-host plant associations. Plants were sampled from 2002 to 2005 in SĂŁo Paulo state, Brazil. A total of eight agromyzid species were reared from 18 Asteraceae host species. The genus Melanagromyza Hendel was the commonest. This is the first detailed study reporting associations between non-leafmining Agromyzidae and their host plants in Brazil.3719799Almeida, A.M., C.R. Fonsceca, P.I. Prado, M. Almeida Neto, S. Diniz, U. Kubota, M.R. Braun, R.L.G. Raimundo, L.A. Anjos, T.G. Mendonça, S.M. Futada & T.M. Lewinsohn. 2005. Diversidade e ocorrĂȘncia de Asteraceae em cerrados de SĂŁo Paulo. Biota Neotrop. 5: http://www.biotaneotropica. org.br/v5n2/pt/abstract?article+BN00105022005 . ISSN 1676-0603Andersen, A., Sjursen, H., Rafoss, T., Biodiversity of Agromizydae (Diptera) and biologically and conventionally grown spring barley and grass field (2004) Biol. Agric. Hortic, 22, pp. 143-155Benavent-Corai, J., Martinez, M., Jimenez PeydrĂł, R., Catalogue of the host-plants of the world Agromyzidae (Diptera) (2005) Boll. Zool. Agrar. Bachic. Serie II, 37, pp. 1-97Bremer, K., (1994) Asteraceae: Cladistics and classification, , Timber Press, Portland, 752pChen, X., Lang, F., Xu, Z., He, J., Ma, Y., The occurrence of leafminers and their parasitoids on vegetables and weeds in Hangzhou area, Southeast China (2003) BioControl, 48, pp. 515-527Eiten, G., Cerrado vegetation of Brazil (1972) Bot. Rev, 38, pp. 201-341Fonseca, C.R., Prado, P.I., Almeida Neto, M., Kubota, U., Lewinsohn, T.M., Flower heads, herbivores, and their parasitoids: Food web structure along a fertility gradient (2005) Ecol. Entomol, 30, pp. 36-46GagnĂ©, R.J., (1994) The gall midges of the Neotropical region, , Cornell Univ. Press, Ithaca, 352pLewinsohn, T.M. 1991. Insects in flower heads of Asteraceae in southeast Brazil: a case study on tropical species richness, p.525-560. In P.W. Price, T.M. Lewinsohn, G.W. Fernandes & W.W. Benson (eds.). Plant-animal interactions: Evolutionary ecology in tropical and temperate regions. John Wiley & Sons, Inc., New York, 639pLewinsohn, T.M., Novotny, V., Basset, Y., Insects on plants: Diversity of herbivore assemblages revisited (2005) Annu. Rev. Ecol. Syst, 36, pp. 597-620Schuster, D.J., Gilreath, J.P., Wharton, R.A., Seymour, P.R., Agromyzidae (Diptera) leafminers and their parasitoids in weeds associated with potato in Florida (1991) Environ. Entomol, 20, pp. 720-723Spencer, K.A., Notes on the Neotropical Agromyzidae (Diptera) (1966) Pap. Avulsos Zool, 19, pp. 142-150Spencer, K.A., The Agromyzidae of Canada and Alaska (1969) Mem. Entomol. Soc. Can, 64, pp. 1-311Spencer, K.A. 1973a. Agromyzidae (Diptera) of economic importance. Dr. W. Junk B. V. The Hague, Serie Entomologica, 418pSpencer, K.A., The Agromyzidae (Diptera) of Venezuela. Rev. Fac. Agrom (1973), pp. 5-107. , Mar. VIIISpencer, K.A., (1990) Host specialization in the world Agromyzidae, , Diptera, Kluwer Academic Publishers, Dordrecht, 444pSpencer, K.A. 1996. Australasian/Oceanian Diptera Catalog - Web Version. URL: http://hbs.bishopmuseum.org/aocat/agromyzidae.html. Accessed in 12/09/2006Spencer, K.A. & C.E. Stegmaier. 1973. Arthropods of Florida (EUA) and neighboring land areas, v. 7. Agromyzidae of Florida (USA) with a Supplement on Species from the Caribbean. Fla. Dep. Agri. Cons. Serv., Gainesville, 205pSpencer, K.A. & G.C. Steyskal. 1986. Manual of the Agromyzidae (Diptera) of the United States. U. S. Department of Agriculture, Agriculture Handbook. n. 638. Washington, U.S.ASpencer, K.A., Martinez, M., Etienne, J., Les Agromyzidae (Diptera) de Guadeloupe. (1992) Ann. Soc. Entomol. Fr, 28, pp. 251-302Zwölfer, H. 1988. Species richness, species packing, and evolution in insect-plant systems, p.301-319. In E.D. Schulze & H. Zwölfer (eds.), Potentials and limitations of ecosystem analysis. Springer-Verlag. Berlin, 435
Clinicopathological And Immunohistochemical Evaluation Of Oral And Oropharyngeal Squamous Cell Carcinoma In Chilean Population
In oral and oropharyngeal squamous cell carcinoma (OCSCC and OPSCC) exist an association between clinical and histopathological parameters with cell proliferation, basal lamina, connective tissue degradation and surrounding stroma markers. We evaluated these associations in Chilean patients. A convenience sample of 37 cases of OCSCC (n=16) and OPSCC (n=21) was analyzed clinically (TNM, clinical stage) and histologically (WHO grade of differentiation, pattern of tumor invasion). We assessed the expression of p53, Ki67, HOXA1, HOXB7, type IV collagen (ColIV) and carcinoma-associated fibroblast (a-SMA-positive cells). Additionally we conducted a univariate/bivariate analysis to assess the relationship of these variables with survival rates. Males were mostly affected (56.2% OCSCC, 76.2% OPSCC). Patients were mainly diagnosed at III/IV clinical stages (68.8% OCSCC, 90.5% OPSCC) with a predominantly infiltrative pattern invasion (62.9% OCSCC, 57.1% OPSCC). Significant association between regional lymph nodes (N) and clinical stage with OCSCC-HOXB7 expression (Chi-Square test P < 0.05) was observed. In OPSCC a statistically significant association exists between p53, Ki67 with gender (Chi-Square test P < 0.05). In OCSCC and OPSCC was statistically significant association between ki67 with HOXA1, HOXB7, and between these last two antigens (Pearson's Correlation test P < 0.05). Furthermore OPSCC-p53 showed significant correlation when it was compared with a-SMA (Kendall's Tau-c test P < 0.05). Only OCSCC-pattern invasion and OPSCC-primary tumor (T) pattern resulted associated with survival at the end of the follow up period (Chi-Square Likelihood Ratio, P < 0.05). Clinical, histological and immunohistochemical features are similar to seen in other countries. Cancer proliferation markers were associated strongly from each other. Our sample highlights prognostic value of T and pattern of invasion, but the conclusions may be limited and should be considered with caution (small sample). Many cases were diagnosed in the advanced stages of the disease, which suggests that the diagnosis of OCSCC and OPSCC is made late.7959685977Wang, Q., Gao, P., Wang, X., Duan, Y., Investigation and identification of potential biomarkers in human saliva for the early diagnosis of oral squamous cell carcinoma (2013) Clin Chim Acta, 427 C, pp. 79-85Parkin, D., Bray, F., Ferlay, J., Pisani, P., Global cancer statistics, 2002 (2005) CA Cancer J Clin, 55, p. 74Dissanayaka, W.L., Pitiyage, G., Kumarasiri, P.V., Liyanage, R.L., Dias, K.D., Tilakaratne, W.M., Clinical and histopathologic parameters in survival of oral squamous cell carcinoma (2012) Oral Surg Oral Med Oral Pathol Oral Radiol, 113, pp. 518-525Koontongkaew, S., The tumor microenvironment contribution to development, growth, invasion and metastasis of head and neck squamous cell carcinomas (2013) J Cancer, 4, p. 66Dalianis, T., Human papillomavirus and oropharyngeal cancer, the epidemics, and significance of additional clinical biomarkers for prediction of response to therapy (2014) Int J Oncol, 44, pp. 1799-1805Kostareli, E., Holzinger, D., Hess, J., New concepts for translational head and neck oncology: Lessons from HPV-related oropharyngeal squamous cell carcinomas (2012) Front Oncol, 2, p. 36Rivera, C., Venegas, B., Histological and molecular aspects of oral squamous cell carcinoma (2014) Oncol Lett, 8, pp. 7-11Bryne, M., Koppang, H.S., Lilleng, R., KjĂŠrheim, Ă
., Malignancy grading of the deep invasive margins of oral squamous cell carcinomas has high prognostic value (2005) J Pathol, 166, pp. 375-381Santos-Garcia, A., Abad-Hernandez, M.M., Fonseca-Sanchez, E., Julian-Gonzalez, R., Galindo-Villardon, P., Cruz-Hernandez, J.J., Bullon-Sopelana, A., E-cadherin, laminin and collagen IV expression in the evolution from dysplasia to oral squamous cell carcinoma (2006) Med Oral Patol Oral Cir Bucal, 11, pp. E100-E105Ramqvist, T., Dalianis, T., Oropharyngeal cancer epidemic and human papillomavirus (2010) Emerg Infect Dis, 16, pp. 1671-1677Rodrigues, P.C., Miguel, M.C., Bagordakis, E., Fonseca, F.P., de Aquino, S.N., Santos-Silva, A.R., Lopes, M.A., Coletta, R.D., Clinicopathological prognostic factors of oral tongue squamous cell carcinoma: a retrospective study of 202 cases (2014) Int J Oral Maxillofac Surg, 43, pp. 795-801Agarwal, A., Sethi, A., Sareen, D., Dhingra, S., Oral and oropharyngeal squamous cell carcinoma in our population: the clinic-pathological and morphological description of 153 casescarcinoma de CĂ©lulas Escamosas Oral y OrofarĂngeo en Nuestra PoblaciĂłn: DescripciĂłn ClĂnico-PatolĂłgica y MorfolĂłgica de 153 Casos (2011) Int J Morphol, 29, pp. 686-693Roosli, C., Tschudi, D.C., Studer, G., Braun, J., Stoeckli, S.J., Outcome of patients after treatment for a squamous cell carcinoma of the oropharynx (2009) Laryngoscope, 119, pp. 534-540Riera, P., Martinez, B., [Morbidity and mortality for oral and pharyngeal cancer in Chile] (2005) Rev Med Chil, 133, pp. 555-563Marsh, D., Suchak, K., Moutasim, K.A., Vallath, S., Hopper, C., Jerjes, W., Upile, T., Thomas, G.J., Stromal features are predictive of disease mortality in oral cancer patients (2011) J Pathol, 223, pp. 470-481Woolgar, J., Rogers, S., West, C., Errington, R., Brown, J., Vaughan, E., Survival and patterns of recurrence in 200 oral cancer patients treated by radical surgery and neck dissection (1999) Oral Oncol, 35, pp. 257-265BĂłrquez, P., Capdeville, F., Madrid, A., Veloso, M., CĂĄrcamo, M., Sobrevida global y por estadios de 137 pacientes con cĂĄncer intraoral: experiencia del Instituto Nacional del CĂĄncerAnalysis of survival of 137 patients with oral cancer (2011) Rev Chil Cir, 63, pp. 351-355Woolgar, J.A., Triantafyllou, A., Pitfalls and procedures in the histopathological diagnosis of oral and oropharyngeal squamous cell carcinoma and a review of the role of pathology in prognosis (2009) Oral Oncol, 45, pp. 361-385Li, Y., Bai, S., Carroll, W., Dayan, D., Dort, J.C., Heller, K., Jour, G., Brandwein-Gensler, M., Validation of the risk model: high-risk classification and tumor pattern of invasion predict outcome for patients with low-stage oral cavity squamous cell carcinoma (2013) Head Neck Pathol, 7, pp. 211-223Chang, Y.C., Nieh, S., Chen, S.F., Jao, S.W., Lin, Y.L., Fu, E., Invasive pattern grading score designed as an independent prognostic indicator in oral squamous cell carcinoma (2010) Histopathology, 57, pp. 295-303Adeyemi, B.F., Olusanya, A.A., Lawoyin, J.O., Oral squamous cell carcinoma, socioeconomic status and history of exposure to alcohol and tobacco (2011) J Natl Med Assoc, 103, pp. 498-502De Souza Setubal Destro, M.F., Bitu, C.C., Zecchin, K.G., Graner, E., Lopes, M.A., Kowalski, L.P., Coletta, R.D., Overexpression of HOXB7 homeobox gene in oral cancer induces cellular proliferation and is associated with poor prognosis (2010) Int J Oncol, 36, pp. 141-149Bitu, C.C., Destro, M.F., Carrera, M., Da Silva, S.D., Graner, E., Kowalski, L.P., Soares, F.A., Coletta, R.D., HOXA1 is overexpressed in oral squamous cell carcinomas and its expression is correlated with poor prognosis (2012) BMC Cancer, 12, p. 146Liao, W.T., Jiang, D., Yuan, J., Cui, Y.M., Shi, X.W., Chen, C.M., Bian, X.W., Ding, Y.Q., HOXB7 as a prognostic factor and mediator of colorectal cancer progression (2011) Clin Cancer Res, 17, pp. 3569-357
Integrating Economic Costs And Biological Traits Into Global Conservation Priorities For Carnivores
Background: Prioritization schemes usually highlight species-rich areas, where many species are at imminent risk of extinction. To be ecologically relevant these schemes should also include species biological traits into area-setting methods. Furthermore, in a world of limited funds for conservation, conservation action is constrained by land acquisition costs. Hence, including economic costs into conservation priorities can substantially improve their conservation cost-effectiveness. Methodology/Principal Findings: We examined four global conservation scenarios for carnivores based on the joint mapping of economic costs and species biological traits. These scenarios identify the most cost-effective priority sets of ecoregions, indicating best investment opportunities for safeguarding every carnivore species, and also establish priority sets that can maximize species representation in areas harboring highly vulnerable species. We compared these results with a scenario that minimizes the total number of ecoregions required for conserving all species, irrespective of other factors. We found that cost-effective conservation investments should focus on 41 ecoregions highlighted in the scenario that consider simultaneously both ecoregion vulnerability and economic costs of land acquisition. Ecoregions included in priority sets under these criteria should yield best returns of investments since they harbor species with high extinction risk and have lower mean land cost. Conclusions/Significance: Our study highlights ecoregions of particular importance for the conservation of the world's carnivores defining global conservation priorities in analyses that encompass socioeconomic and life-history factors. 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Measurement of the View the tt production cross-section using eÎŒ events with b-tagged jets in pp collisions at âs = 13 TeV with the ATLAS detector
This paper describes a measurement of the inclusive top quark pair production cross-section (ÏttÂŻ) with a data sample of 3.2 fbâ1 of protonâproton collisions at a centre-of-mass energy of âs = 13 TeV, collected in 2015 by the ATLAS detector at the LHC. This measurement uses events with an opposite-charge electronâmuon pair in the final state. Jets containing b-quarks are tagged using an algorithm based on track impact parameters and reconstructed secondary vertices. The numbers of events with exactly one and exactly two b-tagged jets are counted and used to determine simultaneously ÏttÂŻ and the efficiency to reconstruct and b-tag a jet from a top quark decay, thereby minimising the associated systematic uncertainties. The cross-section is measured to be:
ÏttÂŻ = 818 ± 8 (stat) ± 27 (syst) ± 19 (lumi) ± 12 (beam) pb,
where the four uncertainties arise from data statistics, experimental and theoretical systematic effects, the integrated luminosity and the LHC beam energy, giving a total relative uncertainty of 4.4%. The result is consistent with theoretical QCD calculations at next-to-next-to-leading order. A fiducial measurement corresponding to the experimental acceptance of the leptons is also presented
Search for strong gravity in multijet final states produced in pp collisions at âs=13 TeV using the ATLAS detector at the LHC
A search is conducted for new physics in multijet final states using 3.6 inverse femtobarns of data from proton-proton collisions at âs = 13TeV taken at the CERN Large Hadron Collider with the ATLAS detector. Events are selected containing at least three jets with scalar sum of jet transverse momenta (HT) greater than 1TeV. No excess is seen at large HT and limits are presented on new physics: models which produce final states containing at least three jets and having cross sections larger than 1.6 fb with HT > 5.8 TeV are excluded. Limits are also given in terms of new physics models of strong gravity that hypothesize additional space-time dimensions
Search for TeV-scale gravity signatures in high-mass final states with leptons and jets with the ATLAS detector at sqrt [ s ] = 13TeV
A search for physics beyond the Standard Model, in final states with at least one high transverse momentum charged lepton (electron or muon) and two additional high transverse momentum leptons or jets, is performed using 3.2 fbâ1 of protonâproton collision data recorded by the ATLAS detector at the Large Hadron Collider in 2015 at âs = 13 TeV. The upper end of the distribution of the scalar sum of the transverse momenta of leptons and jets is sensitive to the production of high-mass objects. No excess of events beyond Standard Model predictions is observed. Exclusion limits are set for models of microscopic black holes with two to six extra dimensions
Search for dark matter produced in association with a hadronically decaying vector boson in pp collisions at sqrt (s) = 13 TeV with the ATLAS detector
A search is presented for dark matter produced in association with a hadronically decaying W or Z boson using 3.2 fbâ1 of pp collisions at View the MathML sources=13 TeV recorded by the ATLAS detector at the Large Hadron Collider. Events with a hadronic jet compatible with a W or Z boson and with large missing transverse momentum are analysed. The data are consistent with the Standard Model predictions and are interpreted in terms of both an effective field theory and a simplified model containing dark matter
Search for resonances in the mass distribution of jet pairs with one or two jets identified as b-jets in protonâproton collisions at âs=13TeV with the ATLAS detector
Searches for high-mass resonances in the dijet invariant mass spectrum with one or two jets identi-fied as b-jets are performed using an integrated luminosity of 3.2fbâ1of protonâproton collisions with a centre-of-mass energy of âs=13TeVrecorded by the ATLAS detector at the Large Hadron Collider. Noevidence of anomalous phenomena is observed in the data, which are used to exclude, at 95%credibility level, excited bâquarks with masses from 1.1TeVto 2.1TeVand leptophobic Z bosons with masses from 1.1TeVto 1.5TeV. Contributions of a Gaussian signal shape with effective cross sections ranging from approximately 0.4 to 0.001pb are also excluded in the mass range 1.5â5.0TeV
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