Replication Data for: Figs 17.2, 17.3, 17.4, WTPDs, Lengths of gestation and lactation, 18 June 2026

I do not know why this designation, but "missing data" is correct in every case. Another OLD Name of file on 22 Nov 2016 = WTPDs, Gestation and lactation On 13 Feb 2017, I add labels to the top of each column On 06 Feb 2020 I add info for WTPD-ID, eartag, littsize, and yearlings I checked these new data TWO TIMES on 07 Feb 2020 Another OLD File name = WTPDs, Littsize vs gest and lac, 07 Feb 2020 Littsize = litter size at first juvenile emergence from natal nursery-burrow = number of weanlings Yearlings = number of offspring from litter that survive for >=9 months after first emergence from natal nursery-burrow Date of estrus and copulation = JULIAN date when female copulated Date of parturition = JULIAN date of parturition Date of weaning = JULIAN date of first juvenile emergence = approximate weaning Length of gestation (days) = Date of Parturition - Date of estrus and copulation Length of lactation = number of days between date of parturition and date of weaning = date of weaning - date of parturition Length of both gestation and lactation = summation of length of gestation and length of lactation I ASSUME that date of weaning = date of first juvenile emergence from the natal burrow entrance, but I know this is not completely true--because nursing of juveniles continues to occur after first juvenile emergences.

See Chapter 18 for details. Dates shown here are Julian dates. Julian date of copulation = 71 = 12 March, for example.