Evaluation of the distribution of plant taxa in relation to phlebotomine sandelies and their breeding sites in Marigat,Baringo district, Kenya.
Amino, Fred Anangwe
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In an effort to contribute to vector control of phlebotomine sandflies and disease management of leishmaniasis, field studies on vegetation and their distribution around sandfly breeding sites were undertaken in Marigat, Baringo district of Kenya. Plant communities were grouped and mapped into entities, segments and strata. Samples were established by determining the minimal area of each sample stand. Qualitative data on identification of all plant species per stand, their structure, height strate, life forms and viability of the plants were collected and analyzed. Estimates of percentage cover of each species of plant in each sample stand were made. Three vegetation units were determined by cluster analysis and mapped using the Geographical Information System (GIS) package as closed- open- and No-canopy acacia Units. Sandfly/plant prevalence per vegetation unit revealed the closed- canopy acacia unit as the most significantly favoured. The plant species found most associated with sandflies and therefore assumed preferred by sandflies were Salvadora persica and Balanites aegyptica. The proportion of non-vector sandflies, Sergentomyia antennatus (53.82 %), S. bedfordi (24.56%) and S. Schwetzi (12.87%) was relatively high among these vegetation. A suspected vector in the Sergentomyia group, S. ingrami (0.71%) was also encountered. Negligible numbers of known vectors of leishmaniasis, P. martini (0.22%) and P. duboscqi (0.05%) were encountered. The ratio of males to females captured among plants was 1.6:1. Over 75% of the female sandflies captured were not blood-fed. The implications of these findings are discussed in the main text of the thesis.
- MST-Zoological Sciences