Variation of tsetse fly abundance in relation to habitat and host presence in the Maasai Steppe, Tanzania

We examined the effect of habitat types and vegetation greenness (NDVI) on the relative abundance of tsetse fly species. Host availability (livestock and wildlife) was also recorded within 100×100 m of each trap site. The highest tsetse abundance was found in the ecotone between Acacia‐Commiphora woodland and grassland, and the lowest in riverine woodland. Glossina swynnertoni was the most abundant species (68%) trapped throughout the entire study, while G. pallidipes was the least common (4%). Relative species abundance was negatively associated with NDVI, with greatest abundance observed in the dry season. The relationship with the abundance of wildlife and livestock was more complex, as we found positive and negative associations depending on the host and fly species. While habitat is important for tsetse distribution, hosts also play a critical role in affecting fly abundance and, potentially, trypanosomiasis risk.

Source: Journal of Vector Ecology - May 15, 2017 Category: Biology Authors: Anibariki Ngonyoka, Paul S. Gwakisa, Anna B. Estes, Happiness J. Nnko, Peter J. Hudson, Isabella M. Cattadori Tags: Original Articles Source Type: research