Temperature effect on the early life development of the spotted rose snapper Lutjanus guttatus in La Paz, Baja California Sur, Mexico

The spotted rose snapper Lutjanus guttatus is a species with vocation for marine aquaculture in Mexico. From a batch of brooding adults (four males, five females), 45 spontaneous spawns were obtained between June and November 2011. With the eggs of the spawning No. 6 incubation time (ti) was measured at different temperatures: 24, 26, 28 and 30 °c, and with three different spawning (No. 9, 16 and 21) the effect of the incubation temperature (eti) on different treatments: 22, 24, 26, 28 y 30 °c. Each experimental unit contained 200 viable eggs, and from the maximum egg hatch percentage, 30 larvae were taken every 12 hours till the presence of pigmented eyes and open eyes and anus. Larval total lengths, muscle height, volume of the yolk sac and oil globule were measured on each larvae, and the time of reserve absorption was measured. The maximum hatching percentage of the incubated eggs at 24 °c took 28 hours post spawning (hpd), at 26 °c it took 20 hpd, at 28 °c: 19 hpd and at 30 °c it took 17 hpd. Consumption of yolk reserves took 72 hour post-hatching (hpe) at 22 °c, with reserve remnants. Treatments of 24, 26, 28 and 30 °c needed 36 hpe. Incubation time and vitelline reserve absorption of L. guttatus vary with incubation temperature with significant differences (p