The document summarizes a tsetse eradication project in Senegal led by the FAO-IAEA partnership from 2005-2016. It describes the phases of the project including feasibility studies, an operational phase using sequential release of sterile male flies, and entomological monitoring. Impact was assessed using species distribution models. The project cost around 6.4 million euro and economic analysis found benefit-cost ratios of 9.8-19.1% with payback periods of 13-18 years due to increased cattle sales in improved breeding systems. The project has had large benefits for the region by changing disease risk levels and promoting agricultural innovation, though 800k more is still needed to fully complete eradication.

1. 29th FAO Regional Conference for Africa, Abidjan, 06 April 2016
The FAO-IAEA Partnership - Successes in Nuclear Applications
F. Bouyer, A. Dicko, M.T. Seck, B. Sall, M. Lo, M. Vreysen, E. Chia, A. Wane, J. Bouyer

2. Context
X X

3. Phases of the tsetse eradication project
in the Niayes of Senegal
 2005-2007 Discussions between DSV & FAO-IAEA ->
strong political will of Senegal to control tsetse &
trypanosomosis
 2007-2010 Feasibility study: target area of 1000 km2
delimited and isolation status confirmed
 2010-2011 Pre-operational phase (pupae transport,
competitiveness, survival, dispersal)
 2011-2016 Operational phase: sequential eradication

4. The team
ISRA/CIRAD
Operational Research
Insectarium
Direction of Vet
Services
Coordination of the
project Coordination cell
1 meeting / month
Vet agents
Entomological surveys
Suppression
Dedicated personal
Entomological surveys
SIT
Field results
Adaptive Management
Joint FAO/IAEA
Division of
Nuclear
Techniques in
Food and
Agriculture
Technical advice
IAEA Department
of Technical
Cooperation
Technology transfer
+ financial support

5. 2011 2012 2013 2014 2015 2016 2017 2018
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
## ## ##
##
Blocks
1
2
3
Programme of sequential eradication
Dakar
Kayar
Thiès
Pout
Bargny
Sebikotane
zonesurveillance par blocks
1 (11)
2 (21)
3a (12)
3b (11)
Suppression
Entomological monitoring
Eradication

6. Suppression using insecticide-treated targets and cattle
Eradication using aerial release of sterile males
Control Strategy
Dicko, A.H., et al. (2014) Using species distribution models to optimize
vector control: the tsetse eradication campaign in Senegal. PNAS.

7. Impact of the Sterile Insect Technique on tsetse population
1-3,4 insecticide
impregnated
targets/km2
+
10 and 100 sterile
males/km2
unsuitable vs
suitable habitat
respectively
SIT
SIT

8. Distribution of the costs by partner (left) and component (right).
Bouyer F, Seck MT, Dicko AH, Sall B, et al. (2014) Ex-ante Benefit-Cost Analysis of the Elimination of a Glossina palpalis gambiensis
Population in the Niayes of Senegal. PLoS Negl Trop Dis 8(8): e3112. doi:10.1371/journal.pntd.0003112
http://www.plosntd.org/article/info:doi/10.1371/journal.pntd.0003112
Estimated cost of the eradication project
 ~ 6.4 million Euro until 2016 (~€ 6400/km2)

9. Evaluation of the Benefits
3 farming systems based on different cattle breeds
 One traditional system based on trypanotolerant cattle
 annual cattle sales €74 (s.d. 38) per head
 Two other livestock keeping systems using more
productive breeds (improved meat & improved milk
production)
 annual cattle sales were € 250 (s.d. 513) per head
 herd size 45% smaller

10. Comparison of the total costs of the project and increase in global cattle sales
per year (year 1 = 2007)
Bouyer F, Seck MT, Dicko AH, Sall B, et al. (2014) Ex-ante Benefit-Cost Analysis of the Elimination of a Glossina palpalis gambiensis
Population in the Niayes of Senegal. PLoS Negl Trop Dis 8(8): e3112. doi:10.1371/journal.pntd.0003112
http://www.plosntd.org/article/info:doi/10.1371/journal.pntd.0003112
Rate of Return (IRR) of 9.8% and
payback period of 18 years
Rate of Return (IRR) of 19.1% and
payback period of 13 years

11. Conclusions
 Benefits of the campaign already huge
 Change in sanitary context already perceived -> strong
innovation anticipated
 The change of socio-technical regime accelerated
after the eradication process
 Reduction of cattle size and integration between
agriculture and cattle breeding promoted
 The Senegal project still needs to find ~800 k€ to
complete eradication