| the decline of a glossina morsitans submorsitans belt in the egbe area of the derived savanna zone, kwara state, nigeria. | in the the early 1970s the egbe area of nigeria was known to be one of high trypanosomiasis risk, with four glossina species g. morsitans submorsitans newstead, g.longipalpis wiedemann, g.palpalis palpalis robineau-desvoidy and g.tachinoides westwood present. grazing by fulani pastoralists used to be short-term and only in the dry season. in recent years these pastoralists have grazed their cattle in the area throughout the year and this has prompted a reappraisal of the tsetse situation. tsetse ... | 1991 | 1768900 |