Figure 1.
Colour patterns of Labrus bergylta.
Example of (a) plain coloured individual (total length = 39.2 cm) and (b) spotted coloured individual (total length = 43.6 cm). Images are not in the same scale.
Table 1.
Reader confidence index for age estimates of Labrus bergylta and number of otoliths assigned to each class.
Figure 2.
Relationship between otolith metrics and fish characteristics.
Linear model fit on (a) otolith weight on fish age and (b) otolith length on fish total length (TL).
Table 2.
Summary of the optimal linear models between fish metrics and otolith metrics. Plain individuals and males were considered the reference levels.
Figure 3.
Validation of ageing criteria (I).
Details of OTC-marked otolith showing (a) 5 annual bands in a captive individual and (b) OTC mark on the same area under fluorescent light. Note the presence of a secondary OTC mark irrelevant for the purpose of this study (OTC injected later as part of another experiment).
Figure 4.
Validation of ageing criteria (II).
Plot of (a) mean and standard deviation of marginal increment for the 5 and 6 yr classes and (b) monthly percentage of otoliths with translucent margin increments.
Table 3.
Details of the 6 individuals marked with OTC in the age validation experiment which successfully revealed the OTC mark.
Table 4.
Summary of the optimal linear model between the log-transformed fish total weight (TW) and the log-transformed fish total length (TL).
Figure 5.
Size and age distributions of the sampled individuals.
Independent plots are presented for the sex-specific size (a) and age (b) and colour-specific size (c) and age (d) distributions of all the individuals pooled. Additional plots are provided for sex-specific size (e) and age (f) distributions for plain individuals and sex-specific size (g) and age (h) distributions for spotted individuals.
Figure 6.
Growth curves of Labrus bergylta.
Von Bertalanffy growth functions (VBGF) plotted by (a) sex, b) colour pattern, c) sex within plain individuals and d) sex within spotted individuals.
Figure 7.
Bivariate 95% confidence ellipses around the von Bertalanffy parameters.
Ellipses surround the growth coefficient (K) and mean asymptotic length (Linf) parameter estimates for the different sexes and colour patterns of Labrus bergylta. Non-overlapping confidence regions indicate differences in the growth parameters.
Table 5.
Parameters of the constrained Von Bertalanffy growth functions with upper and lower 95% confidence intervals and Akaike Information Criteria (AIC) for each model.
Figure 8.
Mortality analysis of Labrus bergylta.
Catch curves and estimates of mortality (inset) for the different cohorts analysed.