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)

Topic(s)

• Age-Length Key
• Growth

Note

Used in the Introductory Fisheries Analyses with R book.

Source

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

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)