data_NorthernPike {Petersen}

Capture-recapture experiment on Northern Pike in Mille Lacs, MN, in 2005.

Description

Fish were tagged on the spawning grounds and recovered in the summer gillnet assessment. Fish were double tagged, and a tag loss analysis showed that tag loss was negligible. It will be ignored here. Length was measured a both times and didn't not change very much between the two sampling occasions. The value recorded below is the average of the two lengths if both lengths were present. Fish that were not sexed or measured for length are ignored and not included

Usage

data(data_NorthernPike)

Format

data_NorthernPike

A data frame with many rows and 4 columns

cap_hist.

Capture history (10, 01, or 11). Note that n_{10}=n_1-m_2; n_{01}=n_2-m_2; and n_{11}=m2

freq.

Number of fish with this history. Always 1

Sex.

Sex of the fish. M=Male; F=Female

Length

Length of the fish in inches.