Growth increment data for Red Lakes Walleye.

Description

Growth increment data for Red Lakes Walleye (Sander vitreus) in one-fish-per-line format.

Format

A data frame with 1543 observations on the following 13 variables.

• fish: A fish identification number. Unique within a year but not across years.

• yearcap: Year the fish was captured.
• ce: A factor denoting capture gear (C=commercial and E=experimental nets).

• agecap: Age of fish at capture.
• lencap: Length of fish at capture.

• inc1: Scale measurement to first annulus.

• inc2: Scale measurement between first and second annulus.

• inc3: Scale measurement between second and third annulus.
• inc4: Scale measurement between third and fourth annulus.
• inc5: Scale measurement between fourth and fifth annulus.
• inc6: Scale measurement between fifth and sixth annulus.
• inc7: Scale measurement between sixth and seventh annulus.
• radcap: Scale radius at time of capture

Topic(s)

• Growth increment analysis
• Weisberg linear growth model

Note

Data is in one-fish-per-line format.

Source

Cyterski, M.J. and G.R. Spangler. 1996. A tool for age determination. North American Journal of Fisheries Management, 16:403-412.

Examples

data(WalleyeRL)
str(WalleyeRL)
head(WalleyeRL)