Simple methods to acutely measure multiple timing metrics among the sexual repertoire of male Drosophila.

A modular chamber plus automated video analysis (DrosoMating) quantifies six male Drosophila melanogaster courtship timing metrics with <0.05% error and 98–99% agreement for CL, CI, and MD.

• Why it matters: Courtship index is common, but other timing measures (courtship latency, copulation latency, mating duration) are harder to score consistently, limiting scalable behavioral genetics.
• What they did: The protocol uses image-based video analysis to detect courtship and copulation events and compute timing and duration across controlled conditions, then validates against manual scoring.
• The result: High agreement and low error enable genetic, neural circuit, and social/environmental manipulations to reveal subtle behavioral differences using standardized, reproducible timing metrics.

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