Publications

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a morphological investigation of culicoides spp. biting midges (diptera: ceratopogonidae) from the caribbean.features of the antennae, maxillary palps, and mouthparts of the females of seven species of culicoides spp. biting midges collected from a montane rainforest site in trinidad, west indies, were studied by light and scanning electron microscopy. comparisons were made with two british species, culicoides impunctatus and culicoides nubeculosus. species-specific differences were demonstrated in the camber and pitch of mandibular teeth, the size and shape of the subapical labral sensilla, the size a ...200415266740
bluetongue epidemiology in the caribbean region: serological and entomological findings from a pilot sentinel system in trinidad and tobago.when monitored by the agar gel immunodiffusion test for antibody to bluetongue viruses, a sentinel flock of twenty-five lambs remained seropositive through the year, whereas in a sentinel herd of twenty calves only two individuals seroconverted and these became negative again within 2 months. a light trap operated with the calf herd yielded high numbers of culicoides insignis lutz (over 18,000 per trap night) along with c. filariferus hoffman, c. pusillus lutz, c. leopoldi ortiz, c. foxi ortiz, ...19892562417
the prevalence and distribution of mansonella ozzardi in coastal north trinidad, w.i.a day blood smear survey for mansonella ozzardi in the north coast communities of trinidad recorded a prevalence of 4.8% in 4,488 persons examined. prevalence rates were highest in the four western-most communities, where the vector, culicoides phlebotomus, is a severe nuisance problem. prevalence rates increased with age and were higher in males than in females. mean microfilaria densities were low in both sexes up to 50 years of age but in older males the density increased with age. wuchereria ...1979382471
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