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

EuroPerchTJ

R Documentation

Ages, lengths, and sexes of European Perch.

Description

Assigned ages, measured fork lengths, and observed sexes for European Perch (Perca fluviatilis) from Lake Tjuekemeer (The Netherlands).

Format

A data frame of 69 observations on the following 3 variables:

fl: Fork lengths (cm).
age: Assigned ages.
sex: Sex (female, male).

Topic(s)

Growth
fon Bertalanffy

Source

From (approximately) Figure 2 in Mooij, W.M., J.M. Van Rooij, and S. Wijnhoven. 1999. Analysis and comparison of fish growth from small samples of length-at-age data: Detection of sexual dimorphism in Eurasian perch as an example. Transactions of the American Fisheries Society, 128:483-490. CSV file

Examples

data(EuroPerchTJ)
str(EuroPerchTJ)
head(EuroPerchTJ)
op <- par(mfrow=c(1,2),pch=19)
plot(fl~age,data=EuroPerchTJ,subset=sex=="female",main="Female")
plot(fl~age,data=EuroPerchTJ,subset=sex=="male",main="Male")
par(op)

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