Bumpus: Bumpus

Description Usage Format Source References See Also Examples

Description

Raw data from the Bumpus (1899) study on morphological selection in sparrows. Humerus length, femur length, tibiotarsus length, skull width, and sternum keel length were originally in inches, but are converted to millimeters in this version in order to make the units of scale congruent amongst the traits. Bumpus contains the following variables:

w

relative fitness, based on survival for all males and females pooled together.

W

absolute fitness, based on survival for all males and females pooled together.

TotalLength_mm

length from the tip of the beak to the tip of the tail in millimeters.

AlarExtent_mm

length of the wing span, from the tip of the left wing to the tip of the right wing in millimeters.

Weight_g

total weight in grams.

SkullL_mm

length of the skull, from the tip of the beak to the occiput in millimeters.

HumerusL_mm

length of the humerus (upper arm bone) in millimeters.

FemurL_mm

length of the femur (thigh bone) in millimeters.

TibioTarL_mm

length of the tibiotarsus (lower leg bone) in millimeters.

SkullW_mm

width of the skull, from the left postorbital bone to the right postorbital bone, in millimeters.

SternumL_mm

length of the keel of the sternum in millimeters.

Sex

sex of the individual (1 = male, 0 = female).

AgeGroup

ontogenetic age group (1 = adult, 0 = young, NA = not available).

Usage

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Format

A data.frame with 136 observations and 13 variables.

Source

A spreadsheet of the morphological data was obtained from the Field Museum: http://www.fieldmuseum.org/science/blog/hermon-bumpus-and-house-sparrows, with measurements in inches converted to millimeters.

References

Bumpus, H.C. 1899. The elimination of the unfit as illustrated by the introduced sparrow, Passer domesticus. Biol. Lectures, Woods Hole Marine Biol. Station: 209-226.

See Also

BumpusFemales, BumpusMales

Examples

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# Load the data
data(Bumpus)

# Look at the structure of the data.frame
str(Bumpus)

# Run a linear regression with w as the response and the morphological traits as the predictors
lm(w ~ ., data=Bumpus[,c(1,3:11)])

MorphoFun/psa documentation built on Nov. 10, 2021, 7:01 a.m.