Supra-nutritional dietary intake of selenite and selenium yeast in normal and stressed rainbow trout (Oncorhynchus mykiss): Implications on selenium status and health responses

Rider, Sebastien A.; Davies, Simon J.; Jha, Awadhesh N.; Fisher, Andrew; Knight, Jan; Sweetman, John

doi:10.1016/j.aquaculture.2009.07.003

Cited by 147 publications

(125 citation statements)

References 71 publications

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“…Furthermore, Rider et al . () found that supra‐supplementation of selenium yeast did not affect oxidative stress prior to a exposure to a stressor in the form of daily handling and confinement. However, a trend towards higher GPX post‐stress in selenium supplemented rainbow trout was observed.…”

Section: Life Histories and Other Intrinsic Factors Associated With Omentioning

confidence: 98%

A comparative and evolutionary approach to oxidative stress in fish: A review

et al. 2017

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Oxidative stress results from an imbalance between the production of reactive oxygen species and the antioxidants defences, in favour of the former. In recent years, the association between oxidative processes, environmental change and life histories has received much attention. However, most studies have focused on avian and mammalian taxonomic groups, with less attention given to fish, despite their ecological and socio‐economic relevance. Here we present a review of the extrinsic and intrinsic factors that influence oxidative processes in fish, using a comparative and evolutionary approach. We demonstrate that oxidative stress plays a key role in shaping fish's responses to environmental change as well as life history strategies. We focus on representative examples to compare and contrast how levels of oxidative stress respond to changes in temperature, salinity and oxygen availability. Furthermore, we describe how emerging threats (i.e. pollution) affect oxidative stress parameters in fish. Oxidative stress indicators are increasingly being used as biomarkers to understand the mechanisms of various human‐induced stressors, but also to understand the physiological consequences of how animals are distributed in space and time and influenced by different life stages. Despite the expansion of the field of ecological oxidative stress, we are only beginning to understand the complex ways in which oxidative stress may interact with both extrinsic and intrinsic factors in fish. We conclude with a research agenda for oxidative research on fish and note that there is need for further research particularly in the area of life history strategies and ecological implications of oxidative status, as this type of research has the potential to help us understand patterns and dynamics relevant to fish conservation.

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Section: Life Histories and Other Intrinsic Factors Associated With Omentioning

confidence: 98%

A comparative and evolutionary approach to oxidative stress in fish: A review

et al. 2017

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“…These selenoproteins participate actively in the antioxidant defense system and prevent the harmful effects of reactive oxygen species (Tapiero et al, 2003). They provide protection to cell membranes against oxidative stress by using reduced glutathione, which catalyzes the reduction of peroxides and hydroperoxides (Arteel and Sies, 2001;Rider et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

Effects of dietary selenium nanoparticles on physiological andbiochemical aspects of juvenile Tor putitora

Khan¹,

Zuberi²,

Nazir³

et al. 2016

Turk J Zool

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A 70-day feeding trial was conducted to evaluate the effects of dietary supplementation of selenium nanoparticles (Se-NPs) on physiological and biochemical aspects of juvenile mahseer (Tor putitora) fish. Maintaining a 40% protein level, 2 different experimental diets supplemented with 0% Se-NPs and 0.68 Se-NPs mg kg -1 were fed to triplicate groups of fish. The experiment was conducted in a semistatic condition consisting of 6 fiber tanks. The fish were first acclimatized, and then 30 fish per tank were randomly put into each fiber tank. At the end of the feeding trial, samples were collected from the fish and analyzed. Results obtained showed that the diet supplemented with Se-NPs significantly increased (P < 0.05) physiological aspects like red blood cell count, hemoglobin level, hematocrit values, and lysozyme activity as compared to the basal diet. Similarly, biochemical parameters including serum growth hormone levels, tissue total protein content, and glutathione peroxidase activity in liver and muscle tissues of T. putitora also significantly (P < 0.05) increased. Thus, dietary Se-NP supplementation at the rate of 0.68 mg kg -1 diet has very beneficial effects on the physiobiochemical health aspects of juvenile T. putitora.

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“…The Se digestibility from diets containing fishmeal is 46-54%, which is much lower than 92% from semi-purified diets supplemented with selenomethionine (Bell & Cowey 1989). Rider et al (2009) Figure 5 Relationships between hepatic or whole body Se concentrations and hepatic GPx activities in gibel carp. .…”

Section: Selenium Is An Essential Element For Fish (Hamilton 2004)mentioning

confidence: 99%

“…One major function of selenium is as an integral component of GPx, which protects cells and membranes from oxidative stress by catalysing the reduction of hydroperoxides and peroxides using reduced glutathione (GR) (Watanabe et al 1997;Arteel & Sies 2001;Rider et al 2009). GPx has been widely used as an indicator of Se status, as there is a linear relationship between tissue GPx activity and Se concentration (Daniels 1996).…”

mentioning

confidence: 99%