Accumulation of waterborne selenium by rainbow trout (Salmo gairdneri), eggs, fry and juveniles

Hodson, Peter V.; Hilton, J. W.; Slinger, S. J.

doi:10.1007/bf02311135

Cited by 16 publications

(6 citation statements)

References 14 publications

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“…The waterborne Se content of 2·2 μg/l determined at the beginning of the present study according to Darrouzès et al ( 46 , 47 ) was within the range that rarely produced discernible adverse effects on fish according to Hamilton ( 45 ) . This level was also unlikely to contribute significantly to the dietary requirement for Se even if waterborne Se has been shown to be readily accumulated by rainbow trout ( 48 ) . The lowest whole-body Se content was found in fish fed the non-supplemented plant-based diet PSe0.…”

Section: Discussionmentioning

confidence: 99%

Influence of the forms and levels of dietary selenium on antioxidant status and oxidative stress-related parameters in rainbow trout (Oncorhynchus mykiss) fry

Fontagné-Dicharry

Godin²,

Liu

et al. 2015

Br J Nutr

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Se is an essential micronutrient required for normal growth, development and antioxidant defence. The objective of the present study was to assess the impact of dietary Se sources and levels on the antioxidant status of rainbow trout (Oncorhynchus mykiss) fry. First-feeding fry (initial body weight: 91 mg) were fed either a plant-or fishmeal-based diet containing 0·5 or 1·2 mg Se/kg diet supplemented or not with 0·3 mg Se/kg diet supplied as Se-enriched yeast or sodium selenite for 12 weeks at 178C. Growth and survival of rainbow trout fry were not significantly affected by dietary Se sources and levels. Whole-body Se was raised by both Se sources and to a greater extent by Se-yeast. The reduced:oxidised glutathione ratio was raised by Se-yeast, whereas other lipid peroxidation markers were not affected by dietary Se. Whole-body Se-dependent glutathione peroxidase (GPX) activity was enhanced in fish fed Se-yeast compared to fish fed sodium selenite or non-supplemented diets. Activity and gene expression of this enzyme as well as gene expression of selenoprotein P (SelP) were reduced in fish fed the non-supplemented plant-based diet. Catalase, glutamate -cysteine ligase and nuclear factor-erythroid 2-related factor 2 (Nrf2) gene expressions were reduced by Se-yeast. These results suggest the necessity to supplement plant-based diets with Se for rainbow trout fry, and highlight the superiority of organic form of Se to fulfil the dietary Se requirement and sustain the antioxidant status of fish. GPX and SelP expression proved to be good markers of Se status in fish.Key words: Selenium: Oxidative stress: Glutathione peroxidase: Rainbow trout fry Se is an essential micronutrient for animals and humans required for normal growth and development (1,2) . This role is attributed to low molecular weight Se compounds, as well as to the presence of Se within proteins and enzymes, named selenoproteins, in the form of the amino acid selenocysteine. Mammals have at least twenty-five selenoproteins, and fish probably more than thirty-two, although the functions of many selenoproteins are not yet elucidated (3,4) . Selenoproteins are involved in diverse physiological functions such as antioxidant defence, reduction of inflammation, thyroid hormone production, DNA synthesis, fertility and reproduction (1) . As a component of glutathione peroxidases (GPX), thioredoxin reductases (TR), and methionine sulphoxide reductases (MSR), Se plays, in particular, a pivotal role against oxidative cellular injury and lipid peroxidation. GPX can reduce H 2 O 2 and organic hydroperoxides to the corresponding alcohols with oxidation of glutathione to glutathione disulphide (5) . Seven GPX have been described in mammals, five of which are selenoproteins (2) . The GPX selenoproteins include the ubiquitously expressed cytosolic GPX1, a gastrointestinal-specific enzyme GPX2, a secreted protein found in plasma GPX3, a ubiquitously expressed enzyme that acts on oxidised lipids named * Corresponding author: S. Fontagné-Dicharry, fax þ33 55954515...

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Section: Discussionmentioning

confidence: 99%

Influence of the forms and levels of dietary selenium on antioxidant status and oxidative stress-related parameters in rainbow trout (Oncorhynchus mykiss) fry

Fontagné-Dicharry

Godin²,

Liu

et al. 2015

Br J Nutr

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“…This particular behaviour indicates that the environment has become unsuitable for the fish to survive. Fish may take up selenium through their gills, as selenium accumulation in rainbow trout is greater after gill development (Hodson et al, 1986). Gill lamellae which are normally thin and delicate are necessary for gas exchange in respiration.…”

Section: Discussionmentioning

confidence: 99%

Responses and Histopathological Studies of <i>Clarias gariepinus</i> Exposed to Selenium Toxicity

Odo¹,

Odedeyi²

2017

ijms

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Various toxicants have been deposited into aquatic environment due to human activities, in light with this, 180 healthy Clarias gariepinus juveniles with mean weight of 7.4±0.64 g and length of 11.2±0.88 cm were exposed to different concentrations of selenium (a typical toxicant) to evaluate its behaviour and histopathological response. The fish were exposed to different concentrations (2, 3, 4, 5 and 6 mg/L) of selenium under a static bioassay for 96 hours after a range finding test and 96 hours LC 50 was determined using probit method. 10 fish per concentration was used for the bioassay in triplicates. The 96 hours lethal concentration (LC 50 ) was estimated to be 3.39 mg/L. The histological examination of the gill revealed hyperplasia and haemorrhage of the gill lamellar. The kidney showed vacuolation and blood stains while the skin demonstrated mucosal eruption. These alterations increase with increase in selenium concentration. Selenium at high concentration has shown to induce behavioural changes on fish and also alterations to organs of Cgariepinus juvenile. It is therefore recommended that industries ensure the incorporation of effluents treatment plants to treat wastes before discharging into the environment.

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“…Hodson et al [9] made an experiment in which rainbow trout eggs were exposed to waterborne selenium. They found that most of the accumulated selenium was in the eggshell (i.e., chorion) of the developing eggs and less than 25% in the embryos.…”

Section: Discussionmentioning

confidence: 99%

“…Although many studies have shown the accumulation of waterborne chemicals in eggs, the distribution of chemicals in different tissues of the egg is poorly known. A study with rainbow trout eggs exposed to radiolabeled selenium suggested that selenium accumulation is not necessarily the same in different parts of the egg, and that the relative distribution between the eggshell and the inner parts of the egg depend on the exposure concentration [9]. Similarly, the distribution of waterborne tetrachlorobiphenyl in lake trout eggs was reported to differ in different parts of the egg, with the total amount of accumulated chemical increasing in the inner parts of the egg but remaining relatively constant in the eggshell during the 4‐h exposure study [10].…”

Section: Introductionmentioning

confidence: 99%

Toxicokinetics of waterborne bisphenol a in landlocked salmon (Salmo salar m. Sebago) eggs at various temperatures

Honkanen

Heinonen

Kukkonen

2001

Enviro Toxic and Chemistry

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Eye-pigmented eggs of landlocked salmon were exposed to waterborne [14C]-labeled bisphenol A at four temperatures (2, 6, 8, and 12 degrees C). Both in accumulation and depuration experiments, the eggs were exposed to a bisphenol A concentration of 1 microg/L for 196 h. In the depuration experiment, the exposed eggs were placed into clean water for 96 h. At each sampling time, the eggs were dissected into three parts (eggshell, embryo, and yolk sac), and all of these parts were weighed and analyzed separately in a liquid scintillation counter. The results show that waterborne bisphenol A accumulates in developing salmon eggs. Accumulation of bisphenol A showed a clear trend both in whole eggs and in dissected parts: the higher the temperature, the higher the uptake rate constant and the concentration of bisphenol A. Steady state was reached only in the embryos at the lowest temperature; in other cases, accumulation was linear. Depuration was significant only in the embryos at 2 and 6 degrees C. As the accumulation and the depuration results show, the elimination of bisphenol A was evidently more significant at lower temperatures.

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Accumulation of waterborne selenium by rainbow trout (Salmo gairdneri), eggs, fry and juveniles

Cited by 16 publications

References 14 publications

Influence of the forms and levels of dietary selenium on antioxidant status and oxidative stress-related parameters in rainbow trout (Oncorhynchus mykiss) fry

Influence of the forms and levels of dietary selenium on antioxidant status and oxidative stress-related parameters in rainbow trout (Oncorhynchus mykiss) fry

Responses and Histopathological Studies of <i>Clarias gariepinus</i> Exposed to Selenium Toxicity

Toxicokinetics of waterborne bisphenol a in landlocked salmon (Salmo salar m. Sebago) eggs at various temperatures

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