scholarly journals Attraction of Triatoma infestans (Klug) to adhesive yeast-baited trap under laboratory conditions

2019 ◽  
Author(s):  
Miriam Cardozo ◽  
Federico G. Fiad ◽  
Liliana B. Crocco ◽  
David E. Gorla
Keyword(s):  
Linear Models ◽  
Life Stage ◽  
Triatoma Infestans ◽  
Age Classes ◽  
Laboratory Conditions ◽  
Orientation Response ◽  
Low Sensitivity ◽  
And Control ◽  
Center Area ◽  
House Infestation

AbstractExisting methods to detect domestic triatomines have low sensitivity. As early house infestation detection is epidemiologically important, the exploration of better methods is required. Hence, we measured the attractiveness of a yeast-baited trap to adults and nymphs of Triatoma infestans, under laboratory conditions.The assays were conducted in an experimental arena, with an experimental and a control traps placed at opposite sides and one refuge in the center area. Insects where released and the number of triatomines in the yeast and control traps were counted, after 3, 6 and 24 hours of the beginning of the experiment. We use generalized linear models within a multimodel inference approach to model the number of insects in the trap, using insect age classes, time after assay initiation and date of the experiment as predictors.Our results show that the attraction to CO2 depends upon the life stage of the insects. During the 24 hours of experiment a constant number of adults were attracted to the yeast trap, while nymphs show attraction only up to the first three hours after the initiation of CO2 liberation. Undoubtedly, the orientation response to chemical cues deserves further studies to be fully understood.

Linear models-based LPV modelling and control for wind turbines

Wind Energy ◽  
2014 ◽  
Vol 18 (7) ◽  
pp. 1151-1168 ◽  
Author(s):  
A. Díaz de Corcuera ◽  
A. Pujana-Arrese ◽  
J. M. Ezquerra ◽  
A. Milo ◽  
J. Landaluze
Keyword(s):  
Wind Turbines ◽  
Linear Models ◽  
And Control

scholarly journals The initial success of the Chagas' Disease Control Program: factors contributing to Triatomine infestation

1992 ◽  
Vol 8 (4) ◽  
pp. 391-403 ◽  
Author(s):  
Millicent Fleming-Moran
Keyword(s):  
Chagas Disease ◽  
Control Program ◽  
Triatoma Infestans ◽  
Linear Regression Models ◽  
Disease Vector ◽  
Disease Control Program ◽  
Household Crowding ◽  
Favorable Conditions ◽  
House Infestation ◽  
Regional Comparisons

While the control of the major Chagas' disease vector Triatoma infestans has been achieved in many endemic areas of Brazil, data from the inception of the control program in the Triângulo Mineiro (1976-79) suggest that re-infestation by triatomines occurs under certain favorable conditions. The percentage of houses infested in 500 communities of the Triângulo Mineiro region is compared for two years: 1976 and 1979, using linear regression models. Controlling for three major triatomine vectors, household crowding, house demolition and construction, and infested out-buildings are all independent covariates of house infestation in these communities. While several household factors have been suggested as correlates of infestation, the control program focuses on community-level reductions in infestation, but intra-community or regional comparisons have heretofore been unfeasible. Computerized data are becoming available to identify communities at high risk for re-infestation, and for targeting control-program activities.

scholarly journals Attraction of Astylus variegatus (Germ.) (Coleoptera: Melyridae) by volatile floral attractants

2007 ◽  
Vol 64 (3) ◽  
pp. 305-307 ◽  
Author(s):  
Maurício Ursi Ventura ◽  
Tania Pereira ◽  
Daiane Heloisa Nunes ◽  
Iara Cintra de Arruda
Keyword(s):  
Phaseolus Vulgaris ◽  
Common Beans ◽  
Phaseolus Vulgaris L ◽  
Release Rates ◽  
Plastic Strip ◽  
Feeding Stimulant ◽  
Laboratory Conditions ◽  
Diabrotica Speciosa ◽  
And Control ◽  
Lagenaria Vulgaris

The beetle Astylus variegatus (Germ.) (Coleoptera: Melyridae) is frequently found in flowers feeding on pollen. Responses of A. variegatus to volatile floral attractants were studied in common beans (Phaseolus vulgaris L.) fields. Traps originally designed to capture Diabrotica speciosa (Germ.) (Coleoptera: Chrysomelidae), consisted of plastic bottles (2 L) with 150 holes (5-mm diameter) yellow gold painted and containing inside a plastic strip (3.5 <FONT FACE=Symbol>´</FONT> 25 cm) with Lagenaria vulgaris (L.) powder (0.28% B cucurbitacin - feeding stimulant and arrestant for diabroticites) sprayed with carbaril insecticide. Treatments consisted of 1,4-dimethoxybenzene (one or two dispensers per trap), 1,4-dimethoxybenze + indole, 1,4-dimethoxybenzene + cinnameldehyde and control. Volatile average release rates (over ten days) was approximately 32 mg day-1 per dispenser under laboratory conditions. 1,4-dimethoxybenzene-lured traps caught significantly more beetles than the control, three and seven days after trap setting. Ten days after the onset of the experiment, there were no differences in number of beetles caught by treatments. Captures were higher in the 1,4-dimethoxybenzene + cinnamaldehyde treatment than in 1,4-dimethoxybenzene only in the first assessment. Adding indole to 1,4-dimethoxybenzene did not improve beetle captures.

scholarly journals Residual foci of Triatoma infestans infestation: Surveillance and control in Rio Grande do Sul, Brazil, 2001-2018

2021 ◽  
Vol 54 ◽  
Author(s):  
Cleonara Bedin ◽  
Tânia Wilhelms ◽  
Marcos Marreiro Villela ◽  
Guilherme Carlos Castilhos da Silva ◽  
Ana Paula Konzen Riffel ◽  
...  
Keyword(s):  
Rio Grande ◽  
Triatoma Infestans ◽  
Rio Grande Do Sul ◽  
And Control

scholarly journals Application of Volatilome Analysis to the Diagnosis of Mycobacteria Infection in Livestock

2021 ◽  
Vol 8 ◽  
Author(s):  
Pablo Rodríguez-Hernández ◽  
Vicente Rodríguez-Estévez ◽  
Lourdes Arce ◽  
Jaime Gómez-Laguna
Keyword(s):  
Analytical Techniques ◽  
Diagnostic Techniques ◽  
Diagnostic Tools ◽  
Future Research ◽  
Control Programs ◽  
Targeted Analysis ◽  
Low Sensitivity ◽  
And Control

Volatile organic compounds (VOCs) are small molecular mass metabolites which compose the volatilome, whose analysis has been widely employed in different areas. This innovative approach has emerged in research as a diagnostic alternative to different diseases in human and veterinary medicine, which still present constraints regarding analytical and diagnostic sensitivity. Such is the case of the infection by mycobacteria responsible for tuberculosis and paratuberculosis in livestock. Although eradication and control programs have been partly managed with success in many countries worldwide, the often low sensitivity of the current diagnostic techniques against Mycobacterium bovis (as well as other mycobacteria from Mycobacterium tuberculosis complex) and Mycobacterium avium subsp. paratuberculosis together with other hurdles such as low mycobacteria loads in samples, a tedious process of microbiological culture, inhibition by many variables, or intermittent shedding of the mycobacteria highlight the importance of evaluating new techniques that open different options and complement the diagnostic paradigm. In this sense, volatilome analysis stands as a potential option because it fulfills part of the mycobacterial diagnosis requirements. The aim of the present review is to compile the information related to the diagnosis of tuberculosis and paratuberculosis in livestock through the analysis of VOCs by using different biological matrices. The analytical techniques used for the evaluation of VOCs are discussed focusing on the advantages and drawbacks offered compared with the routine diagnostic tools. In addition, the differences described in the literature among in vivo and in vitro assays, natural and experimental infections, and the use of specific VOCs (targeted analysis) and complete VOC pattern (non-targeted analysis) are highlighted. This review emphasizes how this methodology could be useful in the problematic diagnosis of tuberculosis and paratuberculosis in livestock and poses challenges to be addressed in future research.

scholarly journals Ecological and Sociodemographic Determinants of House Infestation by Triatoma infestans in Indigenous Communities of the Argentine Chaco

2015 ◽  
Vol 9 (3) ◽  
pp. e0003614 ◽  
Author(s):  
M. Sol Gaspe ◽  
Yael M. Provecho ◽  
M. Victoria Cardinal ◽  
M. del Pilar Fernández ◽  
Ricardo E. Gürtler
Keyword(s):  
Indigenous Communities ◽  
Triatoma Infestans ◽  
Sociodemographic Determinants ◽  
House Infestation

Introduction: Paradise Has Walls

2020 ◽  
pp. 1-22
Author(s):  
S. Jonathon O’Donnell
Keyword(s):  
Critical Race Theory ◽  
Linear Models ◽  
Spiritual Warfare ◽  
Critical Race ◽  
Race Theory ◽  
Asymmetric War ◽  
Territorial Boundaries ◽  
And Control ◽  
The Demonic

Taking point from a post-9/11 spiritual warfare narrative in which models of asymmetric war are used to reconceptualize the demonic, the Introduction argues that figures of the demonic are both consolidating and deconstructive of systems of power, particularly those tied to sovereignty, identity, and empire. Weaving together two definitions of demonology, by Bruce Lincoln and Marcella Althaus-Reid, respectively, it demonstrates that demonology operates as a rubric of knowledge aimed at the classification, comprehension, and control of nonhuman and dehumanized others—the demonized—who simultaneously unsettle those rubrics of knowledge by exposing their categories as constructed and not natural. Mobilizing queer and critical race theory, it then situates the demon’s deconstructive quality in its figuration of passing and counterfeiture, which unsettle territorial boundaries, stable identities, and linear models of temporality.

Production of Monoclonal Antibodies against a New Carcinoma-associated Marker in View of Developing a Serological Test

1990 ◽  
Vol 5 (3) ◽  
pp. 109-117 ◽  
Author(s):  
E. Tagliabue ◽  
F. Centis ◽  
A. Mastroianni ◽  
S. Martignone ◽  
S. Ménard ◽  
...  
Keyword(s):  
Lung Carcinoma ◽  
Serological Test ◽  
Small Cell Lung Carcinoma ◽  
Metastatic Breast ◽  
Cell Lung Carcinoma ◽  
Normal Tissues ◽  
Diagnostic Applications ◽  
Low Sensitivity ◽  
Nsclc Patients ◽  
And Control

By immunizing a mouse with human metastatic breast tumor cells from patient effusions and infiltrated lymph nodes, a monoclonal antibody (MLuC2), which identifies a new carcinoma-associated marker, was raised. The reactivity of this reagent was studied by immunohistochemistry on live and fixed cells from tumor cell lines and on frozen sections from surgical specimens. Besides reacting with 73% of breast carcinomas, MLuC2 also reacted with 93% of non-small cell lung carcinoma (NSCLC) and with a few normal tissues. The MLuC2-recognized molecule (CaMLuC2), whose MW was 90 KDa according to immunoblotting experiments, was found to be detectable in the serum and could therefore be of particular interest for serological diagnostic applications. Since the CaMLuC2 epitope was not polyexpressed on the bearing molecule, we produced a new generation of MAbs in order to define epitopes coexpressed with CaMLuC2 on the same 90 KDa molecule, and which are therefore suitable to develop a double-determinant immunoradiometric assay (DDIRMA) for the detection of this marker in the sera of lung carcinoma patients. Different analyses by immunohistochemistry, binding inhibition tests and DDIRMA, proved that the two new reagents developed, MLuC8 and MLuC9, recognize the same or closely related epitopes, which are however different from CaMLuC2, but which are all present on the same molecule. Preliminary immunoradiometric tests performed on sera from lung cancer and control patients showed a good specificity but a low sensitivity. In fact, only 42% of the 28 tested sera samples from NSCLC patients scored positive despite the fact that more than 90% of the NSCLC expressed the relevant antigen

scholarly journals Comprehensive Ex Vivo Comparison of 5 Clinically Used Conduit Configurations for Valve-Sparing Aortic Root Replacement Using a 3-Dimensional–Printed Heart Simulator

Circulation ◽  
2020 ◽  
Vol 142 (14) ◽  
pp. 1361-1373
Author(s):  
Michael J. Paulsen ◽  
Annabel M. Imbrie-Moore ◽  
Michael Baiocchi ◽  
Hanjay Wang ◽  
Camille E. Hironaka ◽  
...  
Keyword(s):  
Aortic Root ◽  
Linear Models ◽  
Ex Vivo ◽  
Aortic Root Replacement ◽  
In Series ◽  
Valve Sparing ◽  
Cusp Closing ◽  
And Control ◽  
Root Biomechanics ◽  
Native Root

Background: Many graft configurations are clinically used for valve-sparing aortic root replacement, some specifically focused on recapitulating neosinus geometry. However, the specific impact of such neosinuses on valvular and root biomechanics and the potential influence on long-term durability are unknown. Methods: Using a custom 3-dimenstional–printed heart simulator with porcine aortic roots (n=5), the anticommissural plication, Stanford modification, straight graft (SG), Uni-Graft, and Valsalva graft configurations were tested in series using an incomplete counterbalanced measures design, with the native root as a control, to mitigate ordering effects. Hemodynamic and videometric data were analyzed using linear models with conduit as the fixed effect of interest and valve as a fixed nuisance effect with post hoc pairwise testing using Tukey’s correction. Results: Hemodynamics were clinically similar between grafts and control aortic roots. Regurgitant fraction varied between grafts, with SG and Uni-Graft groups having the lowest regurgitant fractions and anticommissural plication having the highest. Root distensibility was significantly lower in SG versus both control roots and all other grafts aside from the Stanford modification ( P ≤0.01 for each). All grafts except SG had significantly higher cusp opening velocities versus native roots ( P <0.01 for each). Relative cusp opening forces were similar between SG, Uni-Graft, and control groups, whereas anticommissural plication, Stanford modification, and Valsalva grafts had significantly higher opening forces versus controls ( P <0.01). Cusp closing velocities were similar between native roots and the SG group, and were significantly lower than observed in the other conduits ( P ≤0.01 for each). Only SG and Uni-Graft groups experienced relative cusp closing forces approaching that of the native root, whereas relative forces were >5-fold higher in the anticommissural plication, Stanford modification, and Valsalva graft groups. Conclusions: In this ex vivo modeling system, clinically used valve-sparing aortic root replacement conduit configurations have comparable hemodynamics but differ in biomechanical performance, with the straight graft most closely recapitulating native aortic root biomechanics.

The Effects of Cypermethrin Pour-On and Piperonyl Butoxide on Triatoma infestans Under Laboratory Conditions

2010 ◽  
Vol 47 (6) ◽  
pp. 1135-1140 ◽  
Author(s):  
Ivana Amelotti ◽  
Silvia S. Catalá ◽  
David E. Gorla
Keyword(s):  
Piperonyl Butoxide ◽  
Triatoma Infestans ◽  
Laboratory Conditions
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