Description

Testes size (square mm; Testes.area) in 8 populations of common yellow dung flies (Scathophaga stercoraria) with different mating systems (Mating.system).

Format

A data frame with 8 observations on the following 2 variables.

mating

a factor with levels Monogamous Polyandrous

testes.area

a numeric vector

Source

Hosken, D.J. and P.I. Ward. 2001. Experimental evidence for testis size evolution via sperm competition. Ecology Letters 4: 10-13.

References

http://en.wikipedia.org/wiki/Scathophaga_stercoraria

Examples