FSAdata (version 0.3.3)

SiscowetMI2004: Ages (subsample) and lengths (all fish) for male and female Siscowet Lake Trout captured at four locations in Michigan waters of Lake Superior.

Description

Ages (subsample) and lengths (all fish) for male and female Siscowet Lake Trout captured at four locations in Michigan waters of Lake Superior.

Format

A data frame with 780 observations on the following 8 variables.

locID

Locations (Blind Sucker,Deer Park,Grand Marais,Little Lake Harbor)

pnldep

Depth of gillnet panel in which the fish was captured

mesh

Gillnet stretch mesh measure

fishID

Unique fish identification code

sex

Sex (F and M)

age

Assigned ages (yrs; from otoliths)

len

Total length (mm)

wgt

Weight (g)

Source

Obtained directly from the U.S. Fish and Wildlife Service via Michael Seider.

Topic(s)

• Age-Length Key
• Growth

Examples

data(SiscowetMI2004)
str(SiscowetMI2004)
head(SiscowetMI2004)
xtabs(~age+locID,data=SiscowetMI2004)
op <- par(mfrow=c(2,2),pch=19)
plot(len~age,data=SiscowetMI2004,subset=locID=="Blind Sucker",main="Blind Sucker")
plot(len~age,data=SiscowetMI2004,subset=locID=="Grand Marais",main="Grand Marais")
plot(len~age,data=SiscowetMI2004,subset=locID=="Little Lake Harbor",main="Little Lake Harbor")
par(op)