Ages, lengths, and sexes of Troutperch.

Description

The assigned ages (by scales), total lengths (mm), and sexes of Troutperch (Percopsis omsicomaycus) captured in southeastern Lake Michigan.

Format

A data frame with 431 observations on the following 3 variables:

• age: Assigned ages (by scales).

• tl: Measured total length (mm).

• sex: Sex (f=female and m=male).

Topic(s)

• Growth
• von Bertalanffy

Source

Simulated from the age-length data provided in Table 1 of House, R., and L. Wells. 1973. Age, growth, spawning season, and fecundity of the trout-perch (Percopsis omsicomaycus) in southeastern Lake Michigan. Journal of the Fisheries Research Board of Canada. 30:1221-1225.

Examples

data(TroutperchLM1)
str(TroutperchLM1)
head(TroutperchLM1)
op <- par(mfrow=c(1,2),pch=19)
plot(tl~age,data=TroutperchLM1,subset=sex=="f",main="female")
plot(tl~age,data=TroutperchLM1,subset=sex=="m",main="male")
par(op)