Influence of luminance modeses on the metamorphosis of artemia in aquaculture

Abstract

The article presents the results of studies of the influence of luminance modes on ontogenesis of artemia cultivated in artificial conditions in a closed cycle. The aim of the work was to study the effect of light on morphological features of artemia at different stages of ontogenesis. During the work, the luminance modes of 1.5 kl, 2.5 kl and 4 kl were used. It was found that the intensity of the light flux differently affects the ontogenesis and development of individual parts of the body of artemia. In one case, during the cultivation of artemia, optimal results were obtained at 2.5 klx, in the other at 4 klx. The luminance mode of 1.5 klx, turned out to be the least effective. Observations of the growth and development of Artemis larvae in an artificial environment revealed that the luminance mode of 4 klx had a more noticeable stimulating effect on the length of the body, abdomen, cephalothorax and furca than the mode of 2.5 klx at the initial stages of postembryonic development of larvae during the first 120 hours. When cultivating sexually mature artemia, as the results of studies have shown, the luminance mode - 2.5 klx had a more pronounced effect on body length, abdominal length, cephalothorax length, abdominal width and the number of bristles on the furc than the 4klx mode. For the first time, the results of morphological studies demonstrating the effect of light intensity on the development of individual parts of the body of crustaceans in aquaculture have been obtained. The study was supported by the Development Program of the Saratov state university of genetics, biotechnology and engineering named after N.I. Vavilov (Prioritet -2030).