Cabezon: Ages, lengths, and maturity for female Cabezon from Oregon.
In FSAdata: Data to Support Fish Stock Assessment ('FSA') Package

Cabezon

R Documentation

Ages, lengths, and maturity for female Cabezon from Oregon.

Description

Ages, lengths, and maturity for female Cabezon (Scorpaenichthys marmoratus) from Newport and Depoe Bay, Oregon.

Format

A data frame with 525 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)

Maturity
Growth
von Bertalanffy

Source

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

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