Testes Size in Flies

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

Usage

FlyTestes

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

str(FlyTestes)
#> 'data.frame':	8 obs. of  2 variables:
#>  $ mating     : Factor w/ 2 levels "Monogamous","Polyandrous": 1 1 1 1 2 2 2 2
#>  $ testes.area: num  0.83 0.85 0.82 0.89 0.96 0.94 0.99 0.91
FlyTestes
#>        mating testes.area
#> 1  Monogamous        0.83
#> 2  Monogamous        0.85
#> 3  Monogamous        0.82
#> 4  Monogamous        0.89
#> 5 Polyandrous        0.96
#> 6 Polyandrous        0.94
#> 7 Polyandrous        0.99
#> 8 Polyandrous        0.91