The model VBGF
with seasonal oscillation through nonlinear fitting explained more than 96% of the variance in females and more than 97% in males of N.
To further check for differences we added the aged fish to the VBGF
data from Bahia de Los Angeles to see if it changed the parameters to any extent that could be considered significant.
For the 3-parameter VBGF
model derived to estimate [L.
parameters, estimated by ELEFAN for each sex, are summarized in Table 3.
growth curves for the smaller cohorts of P.
Here, we discuss the major explanations for the patterns we observed through the use of prevailing ecological theories, and we consider the effects of our revised estimates of parameters for the VBGF
on studies of life history.
mercenaria population has the lowest VBGF
growth constant (K = 0.
It is now commonly put into practice to partially reparameterize the VBGF
parameters to avoid their covariation and to ensure statistical accuracy (Quinn and Deriso, 1999).
The different subroutines of ELEFAN (K-scan, response surface analysis) were used to identify the VBGF
that best fits the monthly size-frequency data, using the Rn value as a criterion of fit.
The combined VBGF
for western North Atlantic red bream was: [L.
Extraction locations were based on preliminary VBGF
predictions, described below, and were chosen to span the initial rise of the [sup.
curves were fitted to the substituted length-at-age data sets by using nonlinear regression.