TroutperchLM1: Ages, lengths, and sexes of Troutperch.
In FSAdata: Data to Support Fish Stock Assessment ('FSA') Package

TroutperchLM1

R Documentation

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. CSV file

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)

FSAdata documentation built on Aug. 24, 2023, 5:06 p.m.