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Ages and lengths of migratory Brown and Rainbow Trout.

Source: R/TroutBR.R
TroutBR.Rd

Total lengths (inches) and ages (from scales) of Brown Trout (Salmo trutta) and Rainbow Trout (Oncorhynchus mykiss) migrating upstream on the Bois Brule River, WI in 1978 and 1979.

Format

A data frame with 851 observations on the following 3 variables:

tl

Measured total length (inches).

age

Assigned age (from scales).

species

Species (Brown and Rainbow).

Source

From tables 18 and 19 of Scholl, D.K., P.J. Peeters, and S.T. Schram. 1984. Migratory brown trout and rainbow trout populations of the Brule River, Wisconsin. Wisconsin Department of Natural Resources, Fish Management Report No. 123. CSV file

Topic(s)

  • Growth

  • von Bertalanffy

Examples

data(TroutBR)
str(TroutBR)
#> 'data.frame':	851 obs. of  3 variables:
#>  $ tl     : int  16 16 17 17 17 17 17 17 17 17 ...
#>  $ age    : int  4 4 2 3 3 3 3 3 3 4 ...
#>  $ species: Factor w/ 2 levels "Brown","Rainbow": 1 1 1 1 1 1 1 1 1 1 ...
head(TroutBR)
#>   tl age species
#> 1 16   4   Brown
#> 2 16   4   Brown
#> 3 17   2   Brown
#> 4 17   3   Brown
#> 5 17   3   Brown
#> 6 17   3   Brown
op <- par(mfrow=c(1,2),pch=19)
plot(tl~age,data=TroutBR,subset=species=="Brown",main="Brown Trout")
plot(tl~age,data=TroutBR,subset=species=="Rainbow",main="Rainbow Trout")

par(op)