Abstract
Study of the Age of Centropomus robalito by Otoliths Analysis of sagitta, asteriscus and lapillus in Mexican Central Pacific
Highlights
Most species of the Centropomidae family are demersal euryhaline semi-catadromous
These canals form chambers that contain otoliths: The sagitta is contained in the sacculus, the asteriscus is contained in the lagena and the lapillus is contained in the utriculus (Figures 3 and 4)
For all specimens b=0.757 (R2=0.872, F=2450), by sex the values were b=0.673 and b=0.684. These results show that as the organisms grow in length, sagittae decrease in size
Summary
Most species of the Centropomidae family are demersal euryhaline semi-catadromous. Their distribution is determined by salinity and temperature, they can inhabit in water colder than 20°C for short periods, they tolerate a wide spectrum of salinities: From 0.07 ppm to 58.29 ppm, but they prefer fresh or brackish waters with a tendency to remain in estuaries, rivers or coastal lagoons. This makes them more prone to the effects of pollution [1].
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