EuroPerchTJ: Ages, lengths, and sexes of European Perch.

EuroPerchTJR 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.

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