Ages, lengths, and sexes of Atlantic Croaker by sex.

Description

Assigned ages (by otoliths), total lengths, and sexes of Atlantic Croaker (Micropogonias undulatus).

Format

A data frame of 318 observations on the following 3 variables:

• age: Otolith age-at-capture (years).
• tl: Total length (nearest mm) at capture.

• sex: Sex of the fish (M=male and F=female).

Topic(s)

• Growth
• von Bertalanffy

Source

From Figure 4 in Chapter 1 (Atlantic Croaker) of the VMRC Final Report on Finfish Ageing, 1999 by the Center for Quantitative Fisheries Ecology at Old Dominion University.

Examples

data(Croaker2)
str(Croaker2)
head(Croaker2)
op <- par(mfrow=c(1,2),pch=19)
plot(tl~age,data=Croaker2,subset=sex=="F",main="Female")
plot(tl~age,data=Croaker2,subset=sex=="M",main="Male")
par(op)