Metabolic responses to salinity acclimation in juvenile shortnose sturgeon Acipenser brevirostrum

Jarvis, Peter L.; Ballantyne, James S.

doi:10.1016/s0044-8486(03)00063-2

Cited by 83 publications

(70 citation statements)

References 47 publications

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“…Similar results were reported that farmed sea bass changed their fatty acid composition and demonstrated a significant correlation between water salinity and especially the amount of 22:6n -3 fatty acid of total phospholipids from gill, liver and muscle tissue samples (Cordier et al 2002). The findings of this study was also in line with previous findings that the percentages of fatty acids 22:6n -3 and 20:5n -3 of total fatty acids in muscle tissue samples are a good indication of a specific physiological function for these fatty acids in relation to osmoregulatory challenge in fish species (Daikoku et al 1982;Jarvis and Ballantyne 2003). The levels of n -3 PUFA's were higher in muscle tissue and whole body of SW-reared European sea bass than FW-reared counterparts in this study.…”

Section: Discussionsupporting

confidence: 91%

The effects of freshwater rearing on the whole body and muscle tissue fatty acid profile of the European sea bass (Dicentrarchus labrax)

et al. 2010

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The purpose of this study was to investigate the effect of freshwater rearing on the fatty acid profiles of the whole body and muscle tissue of the European sea bass (Dicentrarchus labrax). Half of initial fish were gradually acclimated to freshwater (FW) kept at the same temperature to salt water and grown in same conditions as their counterparts in saltwater (SW). The decrease in salinity caused an increase in the percentages of 18:1n -9, 24:1n -9, 18:3n -3, 18:2n -6 and decrease in the percentages of 14:0, 15:0, 20:0, 21:0, 20:5n -3 and 22:6n -3 both in the whole body and in the muscle tissue fatty acid profiles. The lipids of FW-reared fish contained significantly (P \ 0.01) higher percentages of 18:2n -6 and 18:3n -6 than that of SW-reared fish. However, percentages of 20:5n -3 and 22:6n -3 fatty acids decreased significantly (P \ 0.05) compared with those of salt water-reared European sea bass. There was a clear trend of decrement in the percentages of n -3 PUFA fatty acids due to the decrease in water salinity. However, the percentages of n -6 PUFA fatty acids were also increased with the decrease in water salinity. We concluded that the FW acclimation is followed by changes in certain lipid classes of sea bass muscle tissue and whole body samples. n -3/n -6 PUFA ratios were characteristic to previously reported ratios for both FW-and SW-reared European sea bass. In addition, EPA/DHA ratios were basically similar for the fish reared in both SW and FW indicating the equal nutritional value of the final products in terms of providing PUFA's for human nutrition.

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Section: Discussionsupporting

confidence: 91%

The effects of freshwater rearing on the whole body and muscle tissue fatty acid profile of the European sea bass (Dicentrarchus labrax)

et al. 2010

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“…Therefore, lipid metabolism plays a very important role in salinity adaptation in fishes. Apolipoprotein also plays a key role in lipid metabolism (Jarvis and Ballantyne, 2003). In this study, expression of A PO -14 apolipoprotein decreased under low-salt environments (0-5 ppt), indicating that M. cephalus might change apolipoprotein distribution in the body.…”

Section: Effects Of a Po -14 Gene Expressionmentioning

confidence: 49%

“…NKCCla (Na + /K + /2Cl -cotransporter) is possibly closely related to salt secretion in the chloride cells of gill filaments as well as to osmotic regulation, and is highly expressed in the gill tissues of Oreochromis mossambicus (Hiroi et al, 2005). A PO -14 is a special apolipoprotein that functions in salinity adaptation responses, and is correlated with lipid metabolism in fishes (Jarvis and Ballantyne, 2003).…”

Section: Introductionmentioning

confidence: 99%

Gene expressions levels of 14-3-3a, NKCCla, APO-14, and Na+-K+-ATPaseβ in gill tissue of Mugil cephalus acclimated to low salinity

Jiang

Shen

2017

Genet. Mol. Res.

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“…There are few studies on plasma NEFA dynamics during salinity acclimation in fishes. In freshwater shortnose sturgeon (Acipenser brevirostrum), mobilization of fatty acids leading to increased plasma NEFA was observed after 2·weeks acclimation to brackish water (20‰) (Jarvis and Ballantyne, 2003), but in Arctic char there was no change in total plasma NEFA concentration after 96·h of seawater acclimation (J. S. Bystriansky and J.S.B., unpublished). The importance of lipids during salinity acclimation of fishes probably varies on a temporal scale and between species.…”

Section: Effects Of Salinity Acclimation On Metabolic Organization Of Hmentioning

confidence: 99%

Metabolic organization of freshwater, euryhaline, and marine elasmobranchs: implications for the evolution of energy metabolism in sharks and rays

Speers‐Roesch

Ballantyne

2006

Journal of Experimental Biology

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SUMMARY To test the hypothesis that the preference for ketone bodies rather than lipids as oxidative fuel in elasmobranchs evolved in response to the appearance of urea-based osmoregulation, we measured total non-esterified fatty acids (NEFA) in plasma as well as maximal activities of enzymes of intermediary metabolism in tissues from marine and freshwater elasmobranchs,including: the river stingray Potamotrygon motoro (<1 mmol l–1 plasma urea); the marine stingray Taeniura lymma, and the marine shark Chiloscyllium punctatum (>300 mmol l–1 plasma urea); and the euryhaline freshwater stingray Himantura signifer, which possesses intermediate levels of urea. H. signifer also were acclimated to half-strength seawater(15‰) for 2 weeks to ascertain the metabolic effects of the higher urea level that results from salinity acclimation. Our results do not support the urea hypothesis. Enzyme activities and plasma NEFA in salinity-challenged H. signifer were largely unchanged from the freshwater controls, and the freshwater elasmobranchs did not show an enhanced capacity for extrahepatic lipid oxidation relative to the marine species. Importantly, and contrary to previous studies, extrahepatic lipid oxidation does occur in elasmobranchs, based on high carnitine palmitoyl transferase (CPT) activities in kidney and rectal gland. Heart CPT in the stingrays was detectable but low,indicating some capacity for lipid oxidation. CPT was undetectable in red muscle, and almost undetectable in heart, from C. punctatum as well as in white muscle from T. lymma. We propose a revised model of tissue-specific lipid oxidation in elasmobranchs, with high levels in liver,kidney and rectal gland, low or undetectable levels in heart, and none in red or white muscle. Plasma NEFA levels were low in all species, as previously noted in elasmobranchs. D-β-hydroxybutyrate dehydrogenase(d-β-HBDH) was high in most tissues confirming the importance of ketone bodies in elasmobranchs. However, very low d-β-HBDH in kidney from T. lymma indicates that interspecific variability in ketone body utilization occurs. A negative relationship was observed across species between liver glutamate dehydrogenase activity and tissue or plasma urea levels, suggesting that glutamate is preferentially deaminated in freshwater elasmobranchs because it does not need to be shunted to urea production as in marine elasmobranchs.

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Metabolic responses to salinity acclimation in juvenile shortnose sturgeon Acipenser brevirostrum

Cited by 83 publications

References 47 publications

The effects of freshwater rearing on the whole body and muscle tissue fatty acid profile of the European sea bass (Dicentrarchus labrax)

The effects of freshwater rearing on the whole body and muscle tissue fatty acid profile of the European sea bass (Dicentrarchus labrax)

Gene expressions levels of 14-3-3a, NKCCla, A<sub>PO</sub>-14, and Na<sup>+</sup>-K<sup>+</sup>-ATPaseβ in gill tissue of Mugil cephalus acclimated to low salinity

Metabolic organization of freshwater, euryhaline, and marine elasmobranchs: implications for the evolution of energy metabolism in sharks and rays

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