sperm.comp1 {gamair}

Sperm competition data I

Description

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.

Usage

data(sperm.comp1)

Format

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.

Details

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.

Source

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