Keywords: Hybridization; Hybrid intermediacy; Preferred body temperature; Amphibians; Salamandridae; Metamorphosis; Larvae 相似文献
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Milena Gisela Casafús Marília Melo Favalesso Micaela Andrea Gritti Juan Manuel Coronel Ana Tereza Bittencourt Guimares Maria Elisa Peichoto 《PLoS neglected tropical diseases》2021,15(7)
BackgroundEnvenomation by the South American Lonomia saturniid caterpillars, named lonomism, constitutes an emerging and somewhat neglected public health issue in Argentina and neighboring countries. Considering that there is an intricate relationship between environment and human health in such cases, this study aimed to analyze the eco-epidemiological profile of 40 accidents and 33 occurrences of Lonomia spp. in Misiones (Argentina) between January 2014 and May 2020.Methodology/Principal findingsWe described the eco-epidemiological variables and characterized the abiotic scenario of such cases. Additionally, we obtained a density map that shows the punctual intensity of Lonomia records throughout Misiones. Most of the accidents occurred in the Department of Guaraní and involved male victims younger than 20 years old. The accidental/occasional occurrence of Lonomia spp. (considering both adult and caterpillar stages together) was significantly higher in the rural area, whereas only adult specimens were found in urban areas. We determined that the presence of this insect in Misiones is positively related to higher temperatures and solar radiation, and larger precipitation and evapotranspiration throughout the year.Conclusion/SignificanceThis study represents an initial step towards the global understanding of lonomism as a public health problem in Argentina. It provides a map of the risk level for this envenomation in Misiones, which could help authorities address public health policy efforts to implement sustainable strategies for prevention and response to this threat in Northeastern Argentina and neighboring regions. 相似文献
33.
Tereza Pilar-Fonseca João Pereira Aida Campos Ana Moreno Paulo Fonseca Manuel Afonso-Dias 《Hydrobiologia》2014,725(1):137-144
This study presents a 1-year synopsis of the trawl fishery for the European squid Loligo vulgaris in Portuguese waters, integrating length-structured landings with corresponding geo-referenced fishing activities. From vessel monitoring system (VMS) data, landings and biological sampling, a “status-report” was obtained for 2003. Fishing pressure was found to be most intense in inshore areas of the northwest and the south coasts. Population size structure, classified into three categories, was not uniform throughout the fishing areas. Larger squid are found offshore in the northwest (International Council for the Exploration of the Sea—ICES rectangle 10E0) and in the south (rectangles 2E1 and 3E1), whereas all inshore western coast rectangles showed larger proportions of small squid relative to the southern rectangles. The analysis carried out in this study provides an insight into the possible impact of the fishing intensity pattern on the population structure in various zones. The results demonstrate the benefits of combining geo-referenced fisheries information with landings and size data, to produce explicit spatio-temporal information that can contribute to integrated planning and management for the sustainable exploitation of this resource. 相似文献
34.
María Tereza Rojo de Almeida Carla Ríos-Luci José M. Padrón Jorge A. Palermo 《Phytochemistry》2010,71(14-15):1741-1748
Investigation of the organic extracts of the roots of Maytenus vitis-idaea and Maytenus spinosa, collected in the province of Salta, Argentina, led to isolation of eighteen compounds belonging to several classes. From M. vitis-idaea, eight methylenequinone celastroids (1–8) were isolated, four of which (4–7) were hitherto unknown. Additionally, from M. spinosa, two known celastroids, a known celastroid dimer (9), three pentacyclic triterpenoids (10–12) and six β-dihydroagarofuran sesquiterpenoid alkaloids (13–18) were identified. Compounds 4–7 were active against six solid tumor cell lines at micromolar concentrations. 相似文献
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- 1. The influence of interspecific hybridization on temperature preferences and morphology was examined in newts, Triturus carnifex and Triturus dobrogicus, before and after metamorphosis.
2. Thermoregulatory behavior was measured in an aquatic thermal gradient (5–32.5 °C) during 24 h.
3. Hybrid temperature preferences were similar to preferences of maternal species in both premetamorphic larvae and recently metamorphosed individuals.
4. Hybrid morphology (i.e., forelimb length and axilla–groin distance) was intermediate relative to parental species.
5. The mismatch between morphology and thermal preference in hybrid phenotypes indicates potential hybrid disadvantage in both intermediate and parental habitats.
37.
Jadviscokova T Fajkusova Z Pallayova M Luza J Kuzmina G 《Biomedical papers of the Medical Faculty of the University Palacky, Olomouc, Czechoslovakia》2007,151(2):263-266
Aims: Continuous glucose monitoring (CGM) using transcutaneous sensors is becoming a sophisticated method to control and regulate glucose metabolism. The transcutaneous sensor of the CGM system (CGMStrade mark Medtronic Minimed, Northridge, CA, USA) is chosen to measure glucose concentration in interstitial fluid up to three days after insertion even though its function remains stable for a longer period. The question arises, which factors really limit the period of sensor insertion without unnecessary risk. The aim of this study was to assess any adverse events occurring in the course of 9 days after the sensor insertion. Methods: In a group of 22 healthy volunteers aged 21.8+/-1.30 y (mean +/- SE) a total of 26 sensors was inserted subcutaneously in gluteal or lumbar region for 9 days. Before insertion the site was sprayed with an antiseptic (Cutasept F, Bode Chemie, Hamburg, Germany). Local adverse reactions and disturbances in general condition were examined. Results: In the course of 184 sensor-days, there were only minor local adverse events: hypersensitivity, itching, pain, redness, burning, subcutaneous hemorrhage. Additionally, sleep disturbances, attention deficits, problems related to the CGMS monitor, to adhesive tape and/or sensor were found. None of these resulted in sensor withdrawal. In 12 volunteers (55 %) no complications were observed. The sensor function measured according to electrical signals (ISIG) failed (always on day 1-2) in 4 cases (16 %). Conclusions: The present FDA approved 3-day insertion period for Medtronic transcutaneous sensor does not seem to limit its use and appears to be worth a careful revision. 相似文献
38.
Jefferson José da Silva Santos Tereza Magalh?es José Valter Joaquim Silva Junior Andréa Nazaré Monteiro Rangel da Silva Marli Tenório Cordeiro Laura Helena Vega Gonzales Gil 《Memórias do Instituto Oswaldo Cruz》2015,110(5):677-683
Full-length dengue virus (DENV) cDNA clones are an invaluable tool for many studies,
including those on the development of attenuated or chimeric vaccines and on
host-virus interactions. Furthermore, the importance of low passage DENV infectious
clones should be highlighted, as these may harbour critical and unique
strain-specific viral components from field-circulating isolates. The successful
construction of a functional Brazilian low passage DENV serotype 2 full-length clone
through homologous recombination reported here supports the use of a strategy that
has been shown to be highly useful by our group for the development of flavivirus
infectious clones and replicons. 相似文献
39.
Characterization of compost produced from separated pig manure and a variety of bulking agents at low initial C/N ratios 总被引:1,自引:0,他引:1
Nolan T Troy SM Healy MG Kwapinski W Leahy JJ Lawlor PG 《Bioresource technology》2011,102(14):7131-7138
The aim of this study was to investigate the composting of separated pig manure solids with or without a variety of bulking agents at a low initial C/N ratio (12.5-23.3). Compost stability was investigated using an oxygen uptake rate (OUR) test and compost maturity was investigated using a germination index test. All treatments showed typical patterns of compost temperature. Temperatures above 60 °C were achieved by Day 2, followed by a thermophilic phase (50-60 °C), which lasted for 1 to 2 weeks followed by a cooling phase. The stability of one of treatments which did not contain any bulking agent - OUR of 25 mmol O2 kg−1 OM hour−1 - was negatively affected by its initial high water content (69%). The addition of a bulking agent and initial water content below 60% were necessary to compost the separated solid fraction of pig manure at a low initial C/N ratio. 相似文献
40.
Bacterial light-harvesting II (LH-II) centers contain two types of Bacteriochlorophylls (Bchl). One is named B800 and found
as a single molecule within one monomer of the complex while the other named B850 is found as a dimer. Their names indicate
their peak of UV absorbance around red spectrum. Both types of molecules are attached to the protein chain via ligation of
their central Magnesium atom to an either Histidine or Deoxymethionine amino acid. They are also coordinated by peripheral
hydrogen bonds that they accept with their carboxyl side group. Both the ligation and the hydrogen bonding are thought to
have an effect on electronic structure of the Bchl hence its UV absorbance and energy transfer rate. Experiments and theoretic
studies performed on this subject support the above idea. This theoretical molecular modeling study case aims to mimic the
experimental mutations performed on certain amino acids in silico and study its effects on the electronic structure of Bchl. By comparison with experimental results it was observed that the
likely place for the nearby Arginine is not below the plane of the Bchl as in the X-ray crystallographic structure but above
the plane defined by the four nitrogen atoms and their rings. It was also seen that the coordination of the acetyl group is
very sensitive to changes in ligation of the Bchl molecule. 相似文献