Ages and lengths of migratory Brown and Rainbow Trout.

Description

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).

Topic(s)

• Growth
• von Bertalanffy

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.

Examples

data(TroutBR)
str(TroutBR)
head(TroutBR)
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)