Early-life social environment shapes sex allocation in a sex-changing worm

This dataset was collected to investigate sex allocation plasticity in juvenile Ophryotrocha puerilis worms in response to social cues. Age- and size-matched juveniles were exposed to different social environments (isolation, pairs, triplets, and groups with multiple adults) over a 60-day period. Data includes the timing (day) of sex change and individual body size measurements (segment count) at the time of sex change.