YERockfish: Ages, lengths, and maturity for Yelloweye Rockfish.
In FSAdata: Data to Support Fish Stock Assessment ('FSA') Package

YERockfish

R Documentation

Ages, lengths, and maturity for Yelloweye Rockfish.

Description

Ages, lengths, and maturity for female Yelloweye Rockfish (Sebastes rubberimus) from Oregon.

Format

A data frame with 159 observations on the following 5 variables.

date: Date fish was collected
length: Total length (cm)
age: Otolith age
maturity: Maturity state (Immature or Mature)
stage: Stage of maturity (1:Immature, 2:Maturing, 3:Mature, 4:Fertilized, 5:Ripe, 6:Spent, 7:Resting)

Topic(s)

Growth
Maturity
von Bertalanffy

Source

Obtained directly (from Bob Hannah). Data were used in Hannah, R.W, M.T.O. Blume, and J.E. Thompson. 2009. Length and age at maturity of female yelloweye rockfish (Sebastes rubberimus) and cabezon (Scorpaenichthys marmoratus) from Oregon waters based on histological evaluation of maturity. Oregon Department of Fish and Wildlife, Information Reports 2009-04. [Was (is?) from http://www.dfw.state.or.us/mrp/publications/docs/Info200904_YlwEyeRF_Maturity.pdf] CSV file

Examples

data(YERockfish)
str(YERockfish)
head(YERockfish)
op <- par(mfrow=c(2,2),pch=19)
plot(length~age,data=YERockfish,ylab="Total Length (cm)",xlab="Age")
hist(YERockfish$length,xlab="Total Length (cm)",main="")
tbl1 <- with(YERockfish,table(age,maturity))
(ptbl1 <- prop.table(tbl1,margin=1))
plot(ptbl1[,2]~as.numeric(row.names(ptbl1)),type="l",xlab="Age",ylab="Proportion Mature")
tbl2 <- with(YERockfish,table(length,maturity))
(ptbl2 <- prop.table(tbl2,margin=1))
plot(ptbl2[,2]~as.numeric(row.names(ptbl2)),type="l",xlab="Age",ylab="Proportion Mature")
par(op)

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