Fish-biological rationale for the use of low-intensity optical radiation in the technology of growing the stocking material of rainbow trout Oncorhynchus mykiss (Salmonidae) in aquaculture

Abstract

It  was  established  for  the  first  time  that  the  stimulating  effect  of low-intensity optical radiation on aquaculture objects (rainbow trout) depends on the multiplicity of the effect and the temperature regime at which the embryos are exposed and incubated. It is proved that the biological effect on embryos and larvae of rainbow trout can be provided by polarized radiation from both a semiconductor laser and the polarized  radiation  from  an  LED  source  whose  coherence  degree is almost 10 times smaller. New parameters for the regulation of fish-biological parameters of the rainbow trout stocking material based on daily exposure to low-intensity optical radiation (red spectral range λ = 630 nm, coherence length L_co ~ 26 μm) on fish embryos at the ocellus  stage with daily exposure for 20 minutes for 5 days, at a power density of optical radiation of 3.0 mW/cm², at an incubation temperature of 8 °C.