Relevance of Light Spectra to Growth of the Rearing Tiger Puffer Takifugu rubripes

Abstract

In fish, light (photoperiod, intensity and spectra) is main regulator in many physiological actions includinggrowth. We investigate the effect of light spectra on the somatic growth and growth-related gene expression in the rearing tiger puffer. Fish was reared under different light spectra (blue, green and red) for 8 weeks. Fish body weight and total length were promoted when reared under green light condition than red light condition. Expression of somatostatins (ss1 and ss2) in brain were showed higher expression under red light condition than green light condition. The ss3 mRNA was observed only higher expression in blue light condition. Expression of growth hormone (gh) in pituitary was detected no different levels between experimental groups. However, the fish of green light condition group was showed more high weight gain and feed efficiency than other light condition groups. Our present results suggest that somatic growth of tiger puffer is induced under green light condition because of inhibiting ss mRNA expression in brain by effect of green wavelength.

Growth, development and survival of European sea bass ( Dicentrarchus labrax ) larvae cultured under different light spectra and intensities

“…Politis, Butts, and Tomkiewicz () found that 12:12 hr light/dark low‐intensity red light conditions (10 lux and 0.2 μmol m −2 s −1 ) enhanced the survival of European eel larvae, while the hatching rate of zebrafish was highest under blue or violet light, and total body length at 30 dph was greatest under blue, white or violet light (Villamizar, Vera, Foulkes, & Sánchez‐Vázquez, ). When tiger puffers were reared under different light conditions (blue, green or red) for 8 weeks, somatic larval growth was better under green light conditions (Kim, Hur, Hur, Lee, & Lee, ), while tiger puffers reared under red light showed slower growth than the other experimental groups. Additionally, blue light had a negative impact on rainbow trout growth performance (Karakatsouli et al, ), while yellow light increased the mean weight of these fish (Heydarnejad, Parto, & Pilevarian, ).…”

“…Several previous studies also tried to clarify the mechanism whereby light affect the teleost fish growth performance (Kim et al, ; Shin, Lee, & Choi, ; Villamizar et al, ). Growth, food intake and digestion are related to specific behavioural rhythms, including reproduction, with pineal hormones (such as melatonin) being the assumed regulators of these mechanisms (Underwood, ; Zachmann, Falcon, Knijff, Bolliet, & Ali, ).…”

Environmental colour impact on the life of lower aquatic vertebrates: development, growth, physiological and biochemical processes

“…The long‐term rearing of tiger puffer Takifugu rubripes (Kim et al . ) for 8 weeks showed that the growth of fish under green and blue rays of the spectrum was higher than under red light. At the same time, this dependence became evident from the 4th week of the experiment until the end of the experiment.…”

“…Interesting results were obtained in a study of the environmental colour impact on growth and the associated hormonal processes in Takifugu rubripes (Kim et al . ). It showed that green light induces the growth of individuals and at the same time reduces the expression of growth hormone‐inhibiting hormone (GHIH).…”

Effects of Different Light Spectra on the Oocyte Maturation in Grass Puffer Takifugu niphobles

“…Recently, several studies were investigated on the effect of light spectrum on reproductive and growth performance ( Shin et al, 2014 ; Kim et al, 2016 ). According to studies on gold fish ( Carassius auratus ), the gene expression of GnRH and GtH as well as Kisspeptin (known to be a major regulator of reproduction and puberty initiation) increased at the green spectrum compared to that at the red spectrum.…”