bonito {fishmethods}R Documentation

Data from an age and growth study of the pacific bonito.

Description

Growth increment data derived from tagging experiment on Pacific bonito (Sarda chiliensis) used to illustrate Francis's maximum likelihood method estimation of growth and growth variability (1988), often refered to as GROTAG.

Usage

data(bonito)

Format

A data frame with 138 observations on the following 4 variables.

T1
a numeric vector describing the release date
T2
a numeric vector describing the recovery date
L1
a numeric vector describing the length at release in millimeters
delta.L
a numeric vector describing the length increment, in millimeters

Details

Note that Francis (1988) has discarded 2 records from the original dataset collected by Campbell et al. (1975).

Source

1
Francis, R.I.C.C., 1988. Maximum likelihood estimation of growth and growth variability from tagging data. New Zealand Journal of Marine and Freshwater Research, 22, p.42–51.
2
Campbell, G. & Collins, R., 1975. The age and growth of the Pacific bonito, Sarda chiliensis, in the eastern north Pacific. Calif. Dept. Fish Game, 61(4), p.181-200.

[Package fishmethods version 1.0-1 Index]