AVALIAÇÃO DA SOBREVIVÊNCIA DE OVOS E LARVAS DE TILÁPIA DA LINHAGEM TILAMAX SUBMETIDAS À TEMPERATURAS DISTINTAS

The increase in tilapia production has led to improvements in cultivation techniques, water quality control, food management, feed and egg collection techniques. The sexual maturity of tilapias is entirely linked to their age, size and the climatic conditions in which they live. The production of post-larvae and fry depends on the reproductive system used, characterized by the structure of the breeding ponds, tanks or hapas. The aim of this study was to assess the survival of tilapia (Oreochromis niloticus) eggs and larvae of the Tilamax strain subjected to different temperatures during the incubation period. The average values for the characteristics observed at the different temperatures were. This research is approved by CEUA/FPM 004/2024: No. of eggs in 1 ml 123.45, 136.87 and 129.43; Fertilized eggs 108.81, 126.5, 120.5; Unfertilized eggs 15.25, 10.37 and 10.18; Larval survival (%) 37, 45 and 47 showing no statistical difference between the variables, however we can conclude that the temperature at which we had the highest larval survival was 32ºC. Extreme temperatures, higher or lower than recommended, can compromise egg quality, hatchability and survival.