Table 1.
Number of samples (n), mean Total Length (TL, cm), and standard deviation (SD) for each species and time period analysed.
Fig 1.
Temporal evolution of the number of target species over the years in photographs provided by recreational fishermen between 1940 and 2022.
Orange line: trends; brown hatched line: real number of target species along the years.
Fig 2.
Variation in the average total estimated length of Dentex gibbosus, Diplodus cadenati, Lithognathus mormyrus, Sparisoma cretense, and Epinephelus marginatus photographed between 1960 and 2022.
The brown dashed line represents the linear regression fit, while the orange line shows the non-linear GAM model fit (confidence band). Horizontal lines indicate size reference points: solid and dashed lines represent the L50 and L95, respectively, for females (orange) and males (green). L95 is not available for Ephinephelus marginatus, which is why it is not shown in the figure. The solid black line represents to the legal Minimum Landing Size (MLS) in the Canary Islands. Lithognathus mormyrus does not have a MLS regulation.
Table 2.
Slopes (b´1) and annual rates of decline in the average length of selected species.
Table 3.
Sizes at first maturity (L50), mass maturity (L95), and minimum landing size (MLS, for Canary Islands) in centimeters for females and males of the selected species.