sperm.comp1: Sperm competition data I
In gamair: Data for 'GAMs: An Introduction with R'

Description Usage Format Details Source

Data relating sperm count to time since last inter-pair copulation and proportion of that time spent together for 15 couples living in Manchester UK.

1	data(sperm.comp1)

A data frame with 4 columns and 15 rows. The columns are:

subject: An identifier for the subject/couple.
time.ipc: Time since last inter-pair copulation, in hours.
prop.partner: Proportion of time.ipc that the couple had spent together.
count: Sperm count in millions.

The sperm counts reported are total counts in ejaculate from a single copulation, for each of 15 couples. Also recorded are the time since the couple's previous copulation, and the proportion of that time that the couple had spent together. The data are from volunteers from Manchester University and were gathered to test theories about human sperm competition. See the source article for further details.

Baker, RR and Bellis M.A. (1993) 'Human sperm competition: ejaculate adjustment by males and the function of masturbation'. Animal behaviour 46:861-885

gamair documentation built on Aug. 23, 2019, 5:03 p.m.