BlackAngler.agematdat:
Black Anglerfish Age, Sex, Month, Maturity Stage Data
Description
Black anglerfish individual-based data from the Bay of Bizcay sampled from the
catch of an industrial fishing fleet.
Usage
data("BlackAngler.agematdat")
Arguments
Format
A data frame with 711 observations on the following 4 variables.
pred
Integer, age in years
sex
Integer, 1 for males and 2 for females
month
Integer, the month of capture
stages
Integer, stages of maturity encompassing a gradual advance
from juvenile to sexually matur individual
Source
http:\www.azti.es
Details
Age has been fixed by biologists examining rings in otoliths. Maturity stages have been
fixed by biologists using macroscopic aspect of the fish gonads.