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Reproductive stage of old (15+ years) and young females early (weeks 17–19) and late (weeks 20–22) in the sampling period. Stage 1 is immature, stage 2 is maturing and vitellogenesis, stage 3 is fertilized eggs and eyed larvae, stage 4 is post-parturition. In the early and late categories, there were 88 and 191 young females, respectively, and 24 old females included in each of the timing categories.
