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Preliminary studies developing methods for the control of Chrysomya putoria, the African latrine fly, in pit latrines in The Gambia
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| Zeitschriftentitel: | Tropical Medicine & International Health |
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| Personen und Körperschaften: | , , , , |
| In: | Tropical Medicine & International Health, 18, 2013, 2, S. 159-165 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Wiley
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| Schlagwörter: |
| Zusammenfassung: | <jats:title>Abstract</jats:title><jats:sec><jats:title>Objective</jats:title><jats:p>To explore ways of controlling <jats:italic><jats:styled-content style="fixed-case">C</jats:styled-content>hrysomya putoria</jats:italic>, the <jats:styled-content style="fixed-case">A</jats:styled-content>frican latrine fly, in pit latrines. As pit latrines are a major source of these flies, eliminating these important breeding sites is likely to reduce village fly populations, and may reduce the spread of diarrhoeal pathogens.</jats:p></jats:sec><jats:sec><jats:title>Methods</jats:title><jats:p>We treated 24 latrines in a <jats:styled-content style="fixed-case">G</jats:styled-content>ambian village: six each with (i) pyriproxyfen, an insect juvenile hormone mimic formulated as <jats:styled-content style="fixed-case">S</jats:styled-content>umilarv<jats:sup>®</jats:sup> 0.5G, a 0.5% pyriproxyfen granule, (ii) expanded polystyrene beads (<jats:styled-content style="fixed-case">EPB</jats:styled-content>), (iii) local soap or (iv) no treatment as controls. Flies were collected using exit traps placed over the drop holes, weekly for five weeks. In a separate study, we tested whether latrines also function as efficient flytraps using the faecal odours as attractants. We constructed six pit latrines each with a built‐in flytrap and tested their catching efficiency compared to six fish‐baited box traps positioned 10 m from the latrine. Focus group discussions conducted afterwards assessed the acceptability of the flytrap latrines.</jats:p></jats:sec><jats:sec><jats:title>Results</jats:title><jats:p>Numbers of emerging <jats:italic><jats:styled-content style="fixed-case">C</jats:styled-content>. putoria</jats:italic> were reduced by 96.0% (95% <jats:styled-content style="fixed-case">CI</jats:styled-content>s: 94.5–97.2%) 4–5 weeks after treatment with pyriproxyfen; by 64.2% (95% <jats:styled-content style="fixed-case">CI</jats:styled-content>s: 51.8–73.5%) after treatment with local soap; by 41.3% (95% <jats:styled-content style="fixed-case">CI</jats:styled-content>s = 24.0–54.7%) after treatment with <jats:styled-content style="fixed-case">EPB</jats:styled-content> 3–5 weeks after treatment. Flytraps placed on latrines collected <jats:italic><jats:styled-content style="fixed-case">C</jats:styled-content>. putoria</jats:italic> and were deemed acceptable to local communities.</jats:p></jats:sec><jats:sec><jats:title>Conclusions</jats:title><jats:p>Sumilarv 0.5G shows promise as a chemical control agent, whilst odour‐baited latrine traps may prove a useful method of non‐chemical fly control. Both methods warrant further development to reduce fly production from pit latrines. A combination of interventions may prove effective for the control of latrine flies and the diseases they transmit.</jats:p></jats:sec> |
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| Umfang: | 159-165 |
| ISSN: |
1360-2276
1365-3156 |
| DOI: | 10.1111/tmi.12033 |