Replication data for Fig 14.4, 14.12, BTPDs, Wean vs female body mass (X2), 04 May 2026

I assumed that I checked the SYSTAT file TWO TIMES when I created it. Here I will compare for BTPDs probability of weaning >=1 baby vs (a) female body mass just before, during, or just after the mating season = Femwt in Feb and (b) female body mass when weanlings were first emerging from their natal burrow entrances (Femwt in May or June) Litter size = number of weanling offspring that emerged from natal burrow entrance Year = 77 = 1977; 82 = 1982; 85 = 1985, etc.

Femwt = female body mass Mean offspring body mass = mean for all juveniles in litter Mean offspring body mass = mean body mass for all offspring in litter Weaning or no weaning = 0 = BTPD female did NOT wean litter; Weaning or now weaning = 1 = BTPD female DID wean litter This file includes both adult and yearling BTPD females, with the understanding that MOST BTPD females did not wean a litter as yearlings Litter size = litter size at first emergence of offspring from their natal nursery-burrow = number of weanlings.