Catches-at-age for male and female Walleye from Lake Winnebago, WI, 2010.

Format

A data frame with 18 observations on the following 3 variables.

age: Age (yrs; from pectoral fin ray)
numF: Number of captured females
numM: Number of captured males

Source

From Koenigs, R.P., Bruch, R.M., Stelzer, R.S., and Kamke, K.K. 2015. Validation of otolith ages for Walleye (Sander vitreus) in the Winnebago System. Fisheries Research, 167:13-21. Obtained directly from Ryan Koenigs. CSV file

Details

Koenigs et al. (2015) captured adult Walleye from Lake Winnebago during spawning assessments in 2010. The sex was recorded and ages were estimated from sectioned otoliths for each fish. Koenigs et al. (2015) fit separate catch curves to female and male Walleye.

Note

Used in the Introductory Fisheries Analyses with R book.

Topic(s)

Mortality
Catch Curve

Examples

data(WalleyeWad)
str(WalleyeWad)
#> 'data.frame':	18 obs. of  3 variables:
#>  $ age : int  2 3 4 5 6 7 8 9 10 11 ...
#>  $ numF: int  NA 3 23 568 222 233 56 341 NA 18 ...
#>  $ numM: int  85 288 956 3273 1173 1256 370 2115 34 NA ...
head(WalleyeWad)
#>   age numF numM
#> 1   2   NA   85
#> 2   3    3  288
#> 3   4   23  956
#> 4   5  568 3273
#> 5   6  222 1173
#> 6   7  233 1256
plot(numF~age,data=WalleyeWad)
points(numM~age,data=WalleyeWad,pch=19)