Browsing by Author "Nyundo, Bruno Alberto"

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    The diversity of carabid beetles (coleoptera: carabidae) in the Udzungwa Mountains national park, Tanzania.
    (University of Dar es Salaam, 2002) Nyundo, Bruno Alberto
    Between March 1999 and July 2000 an inventory of carabid beetles took place at three sites in the Udzungwa Mountains National Park (UMNP), Tanzania. The sampling protocol was designed to be quick, affordable and to produce standardized data that could be used in estimation of species richness. Three collectors with varying experience in invertebrate sampling applied four collecting methods at the three sites during the dry and wet seasons, thus yielding a total of six replicates for analysis. A total of 1202 samples were collected. These yielded 3264 specimens of carabid beetles belonging to 68 morpho-species in 46 genera and 18 subfamilies. Out of the 68, 19 were identified to species, 34 to genus level, 15 were new to science, and one was a new subspecies of a described species. The data was used to calculate complementarity, to assess the completeness of sampling and in estimation of the true species richness of the study sites. Differences in the relative abundance and species richness between collecting methods and collectors were analyzed statistically. Spatial and seasonal variation of relative abundance and species richness of carabid beetles was investigated. Implications of the results in invertebrate biodiversity surveys are discussed. Areas for further study are suggested.
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    Studies on Paramphistomes of Domestic Ruminants in Kasulu District, Tanzania
    (University of Dar es Salaam, 1994) Nyundo, Bruno Alberto
    An abattoir survey was carried out in Kasulu district to determine the prevalence of stomach flukes (paramphistomes) in the district. Eight paramphistome species belonging to three families of super-family paramphistomoidea were identified. These were calicophoron raja, cotylophoron cotylophorum, paramphistomum daubneyi, p. microbothrium, pphillerouxi and p sukumum (family parampistomatidae) carmyerius sp (family gastrothylacidae) and stephanopharynx sp (family stephanopharyngidae). Of these, six co.cotylophorum, p.microbothrium, pdaubneyi, ca. raja, carmyerius sp. and stephanopharynx sp.) were endemic in local cattle, goats and sheep.p sukumum and p. phillerouxi wer found only in cattle imported into the district from neighbouring Tabora region. Two of the eight species, namely p. microbothrium and p. daubneyi, are known to cause fatal,acute interestinal paramphistomiasis in livestock. Snail surveysrevealed the presence of three snail species, namely biomphalaria pfeifferi, Lymnaea natalensis(incuding l.n gravieri) and gyraulus costulatus. None of the tested snails shed paramphistome cercariae. Taxonomic studies using numerical taxonomy (cluster analysis and principal components analysis) were employed in confirmation of identification based on anatomical/ morphological features. The usefulness of these methods in the taxonomy of stomach flukes is discussed.