Description Usage Format Source References Examples
Raw data from the Howard (1979) study on sexual selection on body size in male Rana catesbeiana bullfrogs during 1976. These data were transcribed from Table 1 in Howard (1979) and then formatted for use in this R package. Bullfrogs
contains the following variables:
BodySize_mm
Body size of the individual, based on snout-ischium length in millimeters
wTotalCops
Relative fitness for mating success (sexual selection), based on the total number of copulations.
wTotalZygotes
Relative fitness for fertility per mate (natural selection), based on the total number of zygotes produced.
wTotalHatchlings
Relative fitness for offspring survivorship (natural selection), based on the total number of hatchlings surviving.
WTotalCops
Absolute fitness for mating success (sexual selection), based on the total number of copulations.
WTotalZygotes
Absolute fitness for fertility per mate (natural selection), based on the total number of zygotes produced.
WTotalHatchlings
Absolute fitness for offspring survivorship (natural selection), based on the total number of hatchlings surviving.
Ind
Individual identification number. Note: one individual had a multi-number ID (i.e., 3-7) and another was not assigned a specific ID and was designated as "NA".
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data.frame with 38 observations and 8 variables
These data were obtained from Table 1 in Howard (1979): http://www.jstor.org/stable/2460219.
Howard RD. 1979. Estimating reproductive success in natural populations. American Naturalist 114(2):221-231. http://dx.doi.org/10.1086/667586
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