prevalence of fasciola hepatica (elisa and fecal analysis) in ruminants from a semi-desert area in the northwest of mexico.the aim of the present study was to estimate the prevalence of fasciola hepatica in cattle, goats and sheep from the municipalities of guaymas and cajeme, sonora state, mexico using the indirect elisa and benedeck's sedimentation tests. a total of 2,936 serum and fecal samples from 1,346 bovines, 1,199 goats and 381 sheep were analyzed. other parameters such as breed and age were also taken into consideration. the results indicated a moderate percentage of prevalence for fasciolosis in these mun ...200717265091
potential effects of the united states-mexico border fence on infrastructure along international boundaries threatens to degrade connectivity for wildlife. to explore potential effects of a fence under construction along the u.s.-mexico border on wildlife, we assessed movement behavior of two species with different life histories whose regional persistence may depend on transboundary movements. we used radiotelemetry to assess how vegetation and landscape structure affect flight and natal dispersal behaviors of ferruginous pygmy-owls (glaucidium b ...201019558522
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