crabs {MASS} | R Documentation

## Morphological Measurements on Leptograpsus Crabs

### Description

The `crabs` data frame has 200 rows and 8 columns, describing 5 morphological measurements on 50 crabs each of two colour forms and both sexes, of the species Leptograpsus variegatus collected at Fremantle, W. Australia.

### Usage

    crabs

### Format

This data frame contains the following columns:

`sp`

  `species` - `"B"` or `"O"` for blue or orange.

`sex`

  as it says.

`index`

  index `1:50` within each of the four groups.

`FL`

  frontal lobe size (mm).

`RW`

  rear width (mm).

`CL`

  carapace length (mm).

`CW`

  carapace width (mm).

`BD`

  body depth (mm).

### Source

Campbell, N.A. and Mahon, R.J. (1974) A multivariate study of variation in two species of rock crab of genus Leptograpsus. Australian Journal of Zoology 22, 417–425.

### References

Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. Springer.

[Package MASS version 7.3-18 Index]