EFFECT OF ILLUMINATION ON THE FISH GROWTH AND DEVELOPMENT
Journal Title: Вестник Астраханского государственного технического университета. Серия: Рыбное хозяйство - Year 2013, Vol 0, Issue 2
Abstract
The results of the authors’ studies and the data of references are generalized, theoretical and practical justification of keeping and cultivation of many fish species under various light conditions are given. The analysis of influence on growth, consumption of food and development of fishes, intensity of lighting, photoperiodism and spectral structure of light is made. It is stated that conditions of illumination are one of the important factors influencing the efficiency of larvae breeding. Most accurately it is shown in options with a green, blue and red range of lighting. Ability to color discrimination of fishes is caused by the existence of three types of the flasks in a retina pigments of which have various spectral characteristics namely, λmах = 455, 530 and 625 nanometers. Each species of fishes is characterized by a certain optimum range of illumination, at which organism functioning improves. In these modes the power budget of the young fish is displaced towards a weight growth, and the general physiological condition is improved. The extension in the daily period of lighting increases the growth rate of the majority of fish species. Low illumination negatively affects the development of larvae and their further growth.
Authors and Affiliations
Valentin Vlasov, Neonila Maslova, Sergey Ponomarev, Yulia Bakaneva
Keywords
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