monogeneaGM (version 1.1)

va_mean: Mean Generalized Procrustes Analysis (GPA) coordinates for ventral anchors of 13 Ligophorus species

Description

A data set containing mean GPA coordinates for the ventral anchors of 13 Ligophorus species.

Usage

data(va_mean)

Format

A list containing 13 objects, each object being a matrix of 11 rows (landmarks) and 2 columns (xy-coordinates) representing GPA-coordinates averaged from samples belonging to the same species

Source

Khang TF, Soo OYM, Tan WB, Lim LHS. (2016). Monogenean anchor morphometry: systematic value, phylogenetic signal, and evolution. PeerJ 4:e1668.

Details

For each specimen, GPA coordinates of all landmarks are averages of those from left and right anchors. Mean GPA coordinates of landmarks are required for shape evolution analysis as well as performing Adam's Kmult test for presence of phylogenetic signal (Adams, 2014).

References

Adams DC. (2014). A generalized K statistic for estimating phylogenetic signal from shape and other high-dimensional multivariate data. Systematic Biology 63: 685-697.

See Also

shapeEvo