Disseminated tuberculosis in hyrax (Procavia capensis) caused by Mycobacterium africanum     

Andrea Gudan  Branka Artukovi?  Zeljko Cvetni?  Silvio Spici?  Ana Beck  Marko Hohsteter  Tomo Nagli?  Ingeborg Bata  Zeljko Grabarevi? 《Journal of zoo and wildlife medicine》2008,39(3):386-391

Tuberculosis due to Mycobacterium africanum was diagnosed in an adult female hyrax (Procavia capensis). Pathologic examination revealed disseminated tuberculous lesions. The same pathologic changes were also found in a male hyrax that died a year later. Both animals were imported from the United Arab Emirates and were held in captivity at the Zagreb Zoo in Croatia. The source of infection remains unknown. The acid-fast bacteria isolated from the lungs of the female hyrax were identifyed by polymerase chain reaction as Mycobacterium tuberculosis complex and Geno Type MTBC test confirmed the strain to be M. africanum I.  相似文献   

Intraocular pressure in the smallest primate aging model: the gray mouse lemur          下载免费PDF全文

Marko Dubicanac  Marine Joly  Julia Strüve  Ingo Nolte  Nadine Mestre‐Francés  Jean‐Michel Verdier  Elke Zimmermann 《Veterinary ophthalmology》2018,21(3):319-327

  相似文献   

Comparative analysis of using cereal grains and compound feed in semi-intensive common carp pond production     

Zoran Marković  Marko Stanković  Božidar Rašković  Zorka Dulić  Ivana Živić  Vesna Poleksić 《Aquaculture International》2016,24(6):1699-1723

The semi-intensive system of carp farming is dominant in inland aquaculture. Although it appears to be simple, this system has a whole range of options, from those based on traditional rearing methods with use of plants from the region where the fish are reared to production based on the use of high-quality concentrated feeds. In this paper, we conduct a comparative analysis of the effect of using cereal grains as opposed to compound feed (pelleted and extruded) on the quantity of fish produced, flesh quality, histological changes in the digestive tract, water quality, and structure of the biocoenosis in the pond ecosystem. When the fish are fed cereal grains, production ranges from 500 to 1500 kg/ha, while using compound feed gives production that is twice as great. The proportions of protein and water are higher and that of lipids lower in flesh of common carp reared on compound feed in relation to fish fed cereal grains. Use of extruded feed gives better content of n-3 polyunsaturated fatty acids and a better n-3/n-6 ratio than when pelleted feed and cereal grains are used. Comparison of water quality in carp ponds under conditions of using various types of feed indicates that there are no significant differences. Although it was expected that feed with a higher percentage of proteins would cause disturbances in the aquatic ecosystem, their continual incorporation into the cycling of matter in the water contributes to maintenance of ecological equilibrium and even indirectly promotes growth of the common carp.  相似文献   

Radioactivity of Selected Agricultural Soils in Croatia: Effects of Soil Properties,Soil Management,and Geological Parameters     

Marko Šoštarić  Željka Zgorelec  Dinko Babić  Ivana Šestak  Ivica Kisić  Milan Mesić  Aleksandra Perčin 《Water, air, and soil pollution》2017,228(6):218

We present a study on the radioactivity of selected Croatian agricultural soils that vary considerably with respect to geological background; physical, chemical, and biological characteristics; soil type; land use; and soil management. Our investigation is focused on the main naturally occurring radionuclides (⁴⁰K, ²³⁸U, ²²⁶Ra, ²³²Th, ²³⁵U) and ¹³⁷Cs as the most threatening long-lived anthropogenic radionuclide. We find that the radioactivity level is not influenced by the application of different soil amendments, at least in moderate quantities, and that no effect of soil management can be detected as well. In contrast, geological and location-specific properties influence radionuclide content in soil, especially regarding the naturally occurring ones. Moreover, physical and chemical soil properties such as texture and soil adsorption complex, respectively, seem to be the main factors regarding fixation of ¹³⁷Cs in soil. Calculated dose rates for external exposure to the gamma radiation originating from soil have been found to be generally low, except for two locations where they are higher but not at a level that would lead to health problems for workers on the field.  相似文献   

Profile and Content of Residual Alkaloids in Ten Ecotypes of Lupinus mutabilis Sweet after Aqueous Debittering Process     

Cortés-Avendaño  Paola  Tarvainen  Marko  Suomela  Jukka-Pekka  Glorio-Paulet  Patricia  Yang  Baoru  Repo-Carrasco-Valencia  Ritva 《Plant foods for human nutrition (Dordrecht, Netherlands)》2020,75(2):184-191

Plant Foods for Human Nutrition - The evaluation of the level of alkaloids in edible Lupinus species is crucial from a food safety point of view. Debittering of lupin seeds has a long history;...  相似文献   

The effect of axial strain on crystalline cellulose in Norway spruce     

Marko Peura  Klaas Kölln  Ingo Grotkopp  Pekka Saranpää  Martin Müller  Ritva Serimaa 《Wood Science and Technology》2007,41(7):565-583

The effect of strain on dry, clear Norway spruce (Picea abies [L.] Karst.) wood was studied by tensile testing along the cell axis and by in situ X-ray diffraction measurements. The mean microfibril angle (MFA) was initially 3–12 degrees and did not decrease due to strain. Based on the positions of the reflections 200 and 004 of crystalline cellulose, cellulose chains elongated and the distance between the hydrogen bonded sheets of chains decreased due to the strain. The elongation of the unit cell parallel to the cellulose chains was twice as high in juvenile wood as in mature wood. The (X-ray) Poisson ratio ν _ca for crystalline cellulose in Norway spruce was calculated from the deformation of the unit cell. The average ν _ca of earlywood was 0.28 ± 0.10 in juvenile wood and 0.38 ± 0.23 in mature wood. In latewood, the average ν _ca was 0.48 ± 0.10 in juvenile wood and 0.82 ± 0.11 in mature wood. The average ν _ca values were not directly correlated to the crystallite dimensions or to the mean MFA in juvenile and mature earlywood and latewood. The results show that the amorphous matrix has a definite effect on the deformation of cellulose crystallites.  相似文献   

Morphological studies in different avian species on artefacts induced by euthanasia with T 61 " or Pentobarbital (Narcoren)     

Kummerfeld N  Legler M  Wohlsein P  Kummerfeld M 《Berliner und Münchener tier?rztliche Wochenschrift》2012,125(1-2):27-31

In mammals (e. g. macaques, dogs, cats, rats, sheep) as well as in men (suicides) euthanasia performed by intravenous injection of T 61 leads to serious lesions in lung, kidney or/and liver (endothelial damage, hyperemia, oedema, necrosis). This is caused by the solvent dimethylformamide (DMF). In this study, in contrast, in different species of birds (e. g. blackbird, carrion crow, kestrel, common buzzard, homer pigeon, common wood pigeon, mallard duck) and various modes of applications and dosages T 61, 1.0-3.0 ml/kg body mass, did not induce comparable artefacts in tissues of internal organs in the narcotized animals. Microscopically, only hyperemia and oedema of lung, kidney and/or liver were found. However, milder but similar lesions were detected also in groups of birds euthanized by pentobarbital (200 mg/kg body mass) as well as in control groups (overdosed ketamine intramusculary, 100 mg/kg body mass, and rapid exsanguination). In conclusion, euthanasia of narcotized birds performed by intravenous or intracardial injections ofT 61 seemed to be suitable. The observed lesions could therefore not be interpreted as T61 induced artefacts.  相似文献   

Provenance plasticity of European beech leaf traits under differing environmental conditions at two Serbian common garden sites     

Srđan Stojnić  Saša Orlović  Danijela Miljković  Zoran Galić  Marko Kebert  Georg von Wuehlisch 《European Journal of Forest Research》2015,134(6):1109-1125

  相似文献   

Evaluation of effects of transgenic Bt maize on microarthropods in a European multi-site experiment   总被引：2，自引：5，他引：2  

Jrme Cortet  Bryan S. Griffiths  Marko Bohanec  Damjan Demsar  Mathias N. Andersen  Sandra Caul  Andrew N. E. Birch  Cline Pernin  Elisabeth Tabone  Annette de Vaufleury  Xin Ke  Paul Henning Krogh 《Pedobiologia》2007,51(3):207-ECOGEN

The effects of maize expressing the Bacillus thuringiensis Cry1Ab protein (Bt maize) on soil microarthropods were assessed in the field at four European locations (two in Denmark and two in France) that differ in their climatic conditions or soil properties. Each site was considered as a separate experiment, with separate statistical comparison. Effects of farming practices using Bt maize were compared with conventional farming practices using near-isogenic non-Bt maize and also (at some of the sites) other conventional varieties. Furthermore, at one field site (Foulum, Denmark), the effects of Bt crops were studied in both conventional tillage and reduced tillage contexts. At another field site (Askov, Denmark), Bt maize effects were also compared to the effects of the chemical insecticide dimethoate. Moreover, at three of the field sites (all except Narbons, France), the possibility of a localised Bt effect around the rhizosphere compared to the bulk soil was assessed by sampling within and between maize rows. There were some significant negative effects of Bt maize on microarthropods in soils with a high clay content. Significant differences of the same magnitude also occurred between different conventional varieties of maize, but the effect of dimethoate appeared clearly greater than Bt effects. It is thus debatable if the Bt maize effect is an effect of the Bt toxin or just an effect of the maize variety. Based on the results, it can be concluded that the effect of Bt maize on soil microarthropods was small and within the normal variation expected in conventional agricultural systems.  相似文献   

Are phenolics leaching from the lichen Cladina stellaris sources of energy rather than allelopathic agents for soil microorganisms?     

Sari Stark  Marko Hyvärinen 《Soil biology & biochemistry》2003,35(10):1381-1385

Lichen phenolics that are known to leach out from lichen thalli during rainfall episodes are considered to be allelopathic or antimicrobial agents. On the other hand, small organic molecules originating from aboveground vegetation generally constitute an important C source for the soil microbial community. We studied the effects of leaching lichen acids on soil microbial processes by chemically removing usnic (UA) and perlatolic acid (PA) from the extracellular space of mat-forming lichen, Cladina stellaris, a dominant component of the ground vegetation in boreal oligotrophic forests. Removal of UA and PA did not affect the intracellular contents of the lichen. We hypothesized that if lichen acids have an adverse effect on soil biota, microbial respiration would increase underneath chemically manipulated lichen mats. In turn, if these substances provide energy source for the microorganisms, microbial respiration would decline under lichens from which PA and UA has been removed. Microbial metabolic activity, qCO₂ was significantly lower under the lichens from which UA and PA had been removed, thus supporting the latter hypothesis. Removing UA and PA did not affect the amount of microbial C, N and P, or soil nutrient concentrations. Our results suggest that the microbial community in the soil under a lichen carpet is adapted to the presence of these lichen secondary metabolites and can utilize them as a C source. The approach of removing lichen substances from the system could be used as an effective research tool as it can overcome several problems that are often common in the studies on allelopathic interactions.  相似文献