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Whitefly and whitefly-borne viruses in the tropics : Building a ... - cgiar

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102<br />

<strong>Whitefly</strong> abundance<br />

0-1<br />

1-3<br />

3-9<br />

9-27<br />

27-81<br />

CMD <strong>in</strong>cidence<br />

B. afer<br />

Not surveyed<br />

20%-30%<br />

30%-40%<br />

40%-50%<br />

50%-60%<br />

60%-70%<br />

100 0 100 200<br />

Kilometers<br />

B. tabaci<br />

300 400<br />

Whiteflies <strong>and</strong> <strong>Whitefly</strong>-<strong>borne</strong> Viruses <strong>in</strong> <strong>the</strong> Tropics<br />

Madagascar<br />

Figure 3. <strong>Whitefly</strong> abundance, cassava mosaic disease (CMD) <strong>in</strong>cidence <strong>and</strong> Bemisia tabaci/B. afer<br />

ratio <strong>in</strong> Madagascar.

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