El objetivo del trabajo fue determinar la temperatura óptima y la tolerancia termal de postlarvas del camarón de río Cryphiops caementarius. Las postlarvas fueron capturadas de la desembocadura del río Mala (Lima, Perú). Las larvas fueron aclimatadas durante 20 días y después cultivadas en 18 acuarios (10 L) con agua salobre (12‰), con una densidad de 500 m-2 y las temperaturas de 19 (control), 22, 24, 26, 28 y 30 ºC. El cultivo duró 45 días y se alimentó con balanceado (30%). La temperatura óptima para el crecimiento fue entre 24 ºC y 28 ºC, aunque en 26 ºC se logró mayor crecimiento (1.33 % día-1 ) y menor en 30 ºC (0.87 % día-1 ) (p<0.05). La supervivencia fue similar (p>0.05) entre tratamientos (64 % y 71 %). Para determinar la tolerancia termal, se emplearon 10 postlarvas de cada temperatura de cultivo y la tasa de calentamiento y enfriamiento fue de 1.1 ± 0.1 ...

In this work, we establish the thermal preference of Cryphiops caementarius adult males, previously acclimated at different temperatures. Shrimp were collected from the Pativilca River. In the laboratory, shrimp were acclimated for 30 days in nine aquariums, each with 10 circular containers. In each container, there was a shrimp (10 per aquarium). Acclimation temperatures were 19, 24 and 28 °C. The gradient temperature system (12 to 33 °C) consisted for a PVC gutter (3 m long and 10 cm deep) with 18 compartments. Submersible thermoregulators (100W) were placed at one end of the gutter and the other end, frozen hydrogel bags. The thermal preference was determined by the acute method and the tests were performed between 08:00 and 14:00 h. Shrimp acclimated at 24 °C moved to compartments whose temperatures were higher than the acclimation temperature. Shrimp acclimated at 24 °C moved to...

In this work, we establish the thermal preference of Cryphiops caementarius adult males, previously acclimated at different temperatures. Shrimp were collected from the Pativilca River. In the laboratory, shrimp were acclimated for 30 days in nine aquariums, each with 10 circular containers. In each container, there was a shrimp (10 per aquarium). Acclimation temperatures were 19, 24 and 28 °C. The gradient temperature system (12 to 33 °C) consisted for a PVC gutter (3 m long and 10 cm deep) with 18 compartments. Submersible thermoregulators (100W) were placed at one end of the gutter and the other end, frozen hydrogel bags. The thermal preference was determined by the acute method and the tests were performed between 08:00 and 14:00 h. Shrimp acclimated at 24 °C moved to compartments whose temperatures were higher than the acclimation temperature. Shrimp acclimated at 24 °C moved to...