FSAdata (version 0.3.0)

SnapperHG2: Age (subsample) and length (all fish) of Snapper.

Description

A large sample (approximately fixed sample size per length interval) of Snapper (Pagrus auratus) were aged, with the remainder of the fish just measured for length. Note that age-16 is actually age 16+ and length 60 is for 60-64 cm and 65 if for 65+ cm.

source

Data re-created from summarized results in Table 8.3 of Quinn, T. J. and R. B. Deriso. 1999. Quantitative Fish Dynamics. Oxford University Press, New York, NY. 542 p.

Topic(s)

• Age-length key

concept

'Age-Length Key'

See Also

See the same data in summarized format as alkdata in fishmethods.

Examples

data(SnapperHG2)
str(SnapperHG2)
head(SnapperHG2)

## Extract the aged sample
sn2.aged <- subset(SnapperHG2,!is.na(age))
str(sn2.aged)

## Extract the length sample
sn2.length <- subset(SnapperHG2,is.na(age))
str(sn2.length)