Example — an illustrative record showing the WASTE article format. WASTE is pre-launch; this is not a published, peer-reviewed article.
CRISPR-Based Gene Drive Approach Proves Unviable for Mosquito Population Control in Humid Climates
Supplementary materials are linked from the published record.
Abstract
Our field-cage trials demonstrate that ambient humidity above 85% reduces gene-drive transmission efficiency by approximately 73%, making this CRISPR-based approach impractical for the tropical regions where vector control is most needed.
We traced the drop to reduced fitness of drive-carrying males under high humidity rather than to molecular failure of the drive construct itself. The construct performed as designed in low-humidity insectary conditions.
We document the method's environmental boundary so that other groups do not re-discover this limitation through expensive field deployments.
Failure Analysis
Stage: Method / Environmental validity
Primary causes
- Reduced drive-carrier male fitness at >85% relative humidity
- Insectary conditions did not represent the target deployment climate
Boundary conditions: The approach may remain viable in arid or controlled-humidity settings; it is the humid-climate deployment that is ruled out here.
Lessons Learned
- The construct worked molecularly; the failure was environmental fitness, not editing.
- Insectary validation did not predict field behavior under high humidity.
- Environmental boundary conditions must be tested before scaling vector interventions.
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