| saprolegnia oliviae sp. nov. isolated from an argentine river (tierra del fuego province, argentina). | saprolegnia oliviae sp. nov. is described from litter (floating dead twigs, leaves and roots) in the olivia river, ushuaia department, tierra del fuego province (argentina). the new species is illustrated and compared with other species of the genus. distinguishing characteristics of s. oliviae are the production of smooth oogonia (with some lateral or terminal projections) and the absence of antheridial branches on the majority of the oogonia, but when present, they are mostly diclinous, at tim ... | 2003 | 12620629 |
| diagnosis of cystic echinococcosis on sheep farms in the south of argentina: areas with a control program. | in 2000 guarnera et al. proposed using elisa in canine faeces collected from the ground to detect dogs infected with echinococcus granulosus, thus determining sheep farms with active transmission. the objective was to evaluate the prevalence of e. granulosus infection in sheep farms of the patagonia. sheep farms were randomly selected in the provinces of río negro, chubut, neuquén, santa cruz and tierra del fuego (areas with control programs) and la pampa (comparison area). from one to three sam ... | 2004 | 15725535 |
| pathogenic and enzyme activities of the entomopathogenic fungus tolypocladium cylindrosporum (ascomycota: hypocreales) from tierra del fuego, argentina. | tolypocladium cylindrosporum is an entomopathogenic fungi that has been studied as a biological control agent against insects of several orders. the fungus has been isolated from the soil as well as from insects of the orders coleoptera, lepidoptera, diptera and hymenoptera. in this study, we analyzed the ability of a strain of t cylindrosporum, isolated from soil samples taken in tierra del fuego, argentina, to produce hydrolytic enzymes, and to study the relationship of those activities to the ... | 2012 | 23894949 |
| bovine brucellosis in argentina and bordering countries: update. | bovine brucellosis is a zoonotic disease spread worldwide. the infection in cattle is predominantly caused by brucella abortus and is usually detected in pregnant females through abortions. the disease is endemic in argentina; however, infection in humans is underestimated and often not reported. the prevalence of bovine brucellosis in countries bordering argentina is quite variable: 0.04% in uruguay, 10.20% in the north and 0.06% in the south of brazil, 0.2% in chile, 3.15% in paraguay and 2.27 ... | 2014 | 23046031 |
| mercury and selenium in subantarctic commerson's dolphins (cephalorhynchus c. commersonii). | total mercury (thg) and selenium (se) concentrations were determined in hepatic, renal, and muscle tissues of seven specimens of commerson's dolphins incidentally captured in artisanal fisheries of tierra del fuego, argentina, by instrumental neutron activation analysis. liver yielded the mean highest concentration of thg 9.40 (9.92) μg g(-1) dry weight (dw) (standard deviation of the average in parenthesis); kidney and muscle showed similar values, ranging from 2.34 to 3.63 μg g(-1) dw. seleniu ... | 2013 | 23225076 |
| [tierra del fuego: the scientific-political construction of exclusion and counter-image of the ideal city dweller]. | due to its late incorporation into the national state, the social, economic and political setting of the argentine province tierra del fuego differed from that of the rest of the national territory. in the construction of dependent otherness, objectifications and representations were imposed by state-related and non-state-related institutions, among other agencies. in this context, the salesian mission of la candelaria and ushuaia's jail for recidivists stand out as spaces in which biopolitics w ... | 2012 | 22849216 |