Light spectra influence the reproductive performance and expression of immune and anti-oxidative defense genes in endangered golden mahseer (Tor putitora) female brooders

Akhtar, M. S.; Tripathi, Priyanka H.; Ciji, Alexander

doi:10.1016/j.aquaculture.2021.737355

Cited by 10 publications

(1 citation statement)

References 42 publications

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“…The antioxidant defense system of fish can be disrupted by external environmental changes and produces reactive oxygen species (ROS).This can negatively impact fish health (Nyska and Kohen, 2002;Nishida, 2011). The appropriate light intensity and spectra can enhance the antioxidant enzymes activities of fish, including SOD, CAT, and T-AOC, comprising the antioxidant defense system and playing a crucial role in decreasing intracellular ROS, and reducing cell damage (Shin et al, 2011;Gao et al, 2016;Guller et al, 2020;Akhtar et al, 2022;Chen et al, 2022b). MDA can cause cell membrane damage and function loss, resulting in negative effects on other physiological functions.…”

Section: Discussionmentioning

confidence: 99%

Influence of daily rhythmic light spectra and intensity changes on the growth and physiological status of juvenile steelhead trout (Oncorhynchus mykiss)

Chen

et al. 2023

Front. Mar. Sci.

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The objective of this study was to investigate the effects of different rhythmic light spectra and intensities on growth performance and physiological and biochemical parameters of juvenile steelhead trout (Oncorhynchus mykiss). Seven treatments were randomly assigned to 21 tanks using a single-flow system for 13 weeks (N = 3), namely blue–purple–red light (BPR), red–purple–blue light (RPB), blue light (VB), and red light (VR). These light treatments alternated at 300, 900, and 1,200 lx, as well as a constant 900 lx of blue light (CB), red light (CR), and white light (CW). Results showed that the highest feed intake (FI), final body weight (FBW), and specific growth rate (SGR) were observed in the BPR treatment, which were significantly higher than those in the CW, CR, CB, and VB treatments. BPR treatment resulted in higher levels of insulin-like growth factor 1 (IGF-1), free triiodothyronine (FT3) and thyroxine (FT4), superoxide dismutase (SOD), and catalase (CAT), and total antioxidant capacity (T-AOC) activities were found. Fish exposed to BPR showed significantly enhanced lipase (LPS) and trypsin (Trp) activity in the stomach and gut tissues which promoted digestion. Trout exposed to a constant light spectra and intensity environment showed decreased activities of antioxidant and gastrointestinal digestive enzymes. Our results indicate the positive influence of BPR light conditions on the growth, stress response, digestion, and metabolism of juvenile steelhead trout, which is likely related to its similarity to the light rhythm in natural water environments, and can be used to improve growth and physiological status in the aquaculture trout.

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