Description Usage Format Source References See Also Examples
Raw data from the Crean et al. (2011) study on phenotypic selection across the metamorphic boundary in Styela plicata larvae. These data were downloaded from Dryad and then formatted for use in this R package. LarvalSquirtsLD
includes the data from the high density treatment, and consists of the following variables:
wr
relative fitness based on postmetamorphic survival to reproduction after 4 months in the field (survivalToReprod
) for larvae in the low density treatment.
ws
relative fitness based on postmetamorphic growth, using wet weight (in grams) after 4 months in the field as a proxy (wetWeight4months.g
) for larvae in the low density treatment.
Wr
absolute fitness based on postmetamorphic survival to reproduction after 4 months in the field (survivalToReprod
) for larvae in the low density treatment. 1 = survived, 0 = died.
Ws
absolute fitness based on postmetamorphic growth, using wet weight (in grams) after 4 months in the field as a proxy (wetWeight4months.g
) for larvae in the low density treatment.
larvalArea_um2
area of the larva, "estimated from the average of at least three measurements", in units of squared micrometers.
hatchTime_mins
time to hatching, a premetamorphic trait used as a proxy for development time, in units of minutes.
settleTime_mins
time to settlement, a premetamorphic trait measured every 4 hours, in units of minutes. "Larvae that had not settled within 25 hours posthatch were excluded from their analyses (n = 3)".
trial
one of five replicate runs ("trials") that were run betwen May and October 2009.
individual
individual identification code.
treatment
experimental treatment group (LD = low density, HD = high density).
1 |
data.frame with 82 observations and 10 variables
These data were obtained from the Excel spreadsheet that is available on Dryad: http://datadryad.org/resource/doi:10.5061/dryad.574r7, and are associated with Crean et al. (2011).
Crean AJ, Monro K, Marshall DJ. 2011. Fitness consequences of larval traits persist across the metamorphic boundary. Evolution 65(11): 3079-3089. doi:10.1111/j.1558-5646.2011.01372.x
LarvalSquirts, LarvalSquirtsHD
1 2 3 4 5 6 7 8 | # Load the data
data(LarvalSquirtsLD)
# Look at the structure of the data.frame
str(LarvalSquirtsLD)
# Run a linear regression with wr as the response and the phenotypic traits as the predictors
lm(wr ~ ., data = LarvalSquirtsLD[,5:7])
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