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Figure 2.13 The distribution of Glossina morsitcms in Kenya and Tanzania (horizontal black lines) described using (A) a single variable, the maximum of the monthly normalized difference vegetation indices (NDVI 69% correct predictions), and (B) using nine additional climatological variables (84% correct predictions). Reprinted from Rogers and Randolph, Distribution of tsetse and ticks in Africa, past, present and future. Parasitology Today 9: 266-71; © 1993, with permission from Elsevier Science

Key to distribution maps (Figures 2.12, 2.13 and 2.14)

Colour

Pink

Red/yellow Yellow/green Pale green Green

Probability of occurrence 0.00 - 0.349 0.35 - 0.449 0.45 - 0.499 0.50 - 0.549 0.55 - 0.649 0.65 -1.0

Figure 2.14 The distribution of Glossina pallidipes in Kenya and Tanzania using (A) the minimum of the monthly NDVI (67% correct), and (B) nine additional climatological variables (79% correct predictions). Reprinted from Rogers and Randolph. Distribution of tsetse and ticks in Africa, past, present and future. Parasitology Today 9: 266-71; © 1993. with permission from Elsevier Science

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