Transport of alpha-tocopherol in Atlantic salmon (Salmo salar) during vitellogenesis

Lie, Øyvind; Sandvin, Aslaug; Waagbø, Rune

doi:10.1007/bf00004362

Cited by 101 publications

(64 citation statements)

References 20 publications

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“…Changes in tocopherol levels in cod ovaries with maturation have not yet been published, but the concentration in this study was on average 46 × higher than in cod muscle from the northern part of the Baltic Sea (Syvaoja et al 1985). An accumulation of α-tocopherol in ovaries is consistent with transport from muscle to ovary during vitellogenesis, as indicated in a study of salmon (Lie et al 1994). The average concentration of α-tocopherol in cod ovaries was 12 and 89 × greater than the Baltic herring and sprat respectively, and hence an accumulation in ovary compared to dietary concentration was evident.…”

Section: Antioxidant Dynamicssupporting

confidence: 77%

Linking lipid dynamics with the reproductive cycle in Baltic cod Gadus morhua

Røjbek¹,

Jacobsen²,

Tomkiewicz³

et al. 2012

Mar. Ecol. Prog. Ser.

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This study describes lipid composition and antioxidants of Baltic cod Gadus morhua L. during the reproductive cycle, and investigates whether they reflect its dominant prey and whether levels of fatty acids important for reproductive performance were low. Reasons for a shift in peak spawning time of Baltic cod from spring/early summer to midsummer since the early 1990s remain unresolved and may partly be diet related. This study demonstrated that a substantial amount of lipid was invested in cod ovarian development, and that lipid composition varied substantially with the reproductive cycle. Selective retention of the essential fatty acids docosahexaenoic acid (DHA) and arachidonic acid (ARA) in ovaries during maturation was evident, but despite mobilization from the liver, ARA levels were low in ovaries during late maturation and spawning. Astaxanthin and α-tocopherol accumulated in cod ovaries and decreased in late maturing and spawning fish, most likely due to their antioxidant protection activity. The fatty acid composition of cod liver reflected its clupeid prey. The ratio of 18:1n-9 to DHA was almost twice as high in sprat as in herring and indicated the ratio of sprat and herring in cod diet, while the level of 16:1n-7 and astaxanthin indicated the presence of the isopod Saduria entomon in cod diet. It is likely that food web alterations in the Baltic ecosystem related to environmental and hydrographic changes caused a decrease in ARA availability. Low ARA content coincides with cod ovarian development in the central Baltic Sea, and may be associated with the delay in spawning and affect egg and larval survival; however, this needs further verification in experimental studies.

show abstract

Section: Antioxidant Dynamicssupporting

confidence: 77%

Linking lipid dynamics with the reproductive cycle in Baltic cod Gadus morhua

Røjbek¹,

Jacobsen²,

Tomkiewicz³

et al. 2012

Mar. Ecol. Prog. Ser.

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“…The second phase or endogenous portion of lipid metabolism exports lipids from the liver to the peripheral tissues packaged in very low density lipoproteins (VLDL), low density lipoproteins (LDL) and high density lipoproteins (HDL). In female fish, there is also a very high density lipoprotein fraction (VHDL) that consists mainly of the egg yolk precursor, vitellogenin (VTG) (Lie et al, 1994). Hung et al (1982) reported that for rainbow trout (Oncorhynchus mykiss) vitamin E was found mostly in the VLDL fraction.…”

Section: Role Of Vitamin E In Supporting Reproductionmentioning

confidence: 99%

“…More evidence for the relatively minor importance of VTG in transporting vitamin E was provided by Lie et al (1994) in their studies of the transport of vitamin E in Atlantic salmon (Salmo salar). In these studies, juvenile Atlantic salmon were fed one of 6 experimental diets for a period of 24 months.…”

Section: Role Of Vitamin E In Supporting Reproductionmentioning

confidence: 99%

Vitamins A and E in the maternal diet influence egg quality and early life stage development in fish: a review

Palace¹,

Werner²

2006

Sci. Mar.

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SUMMARY: Early development in fish is dependent on essential nutrients present in the egg. Vitamins E and A are critical to the normal development of fish embryos. Vitamin E functions primarily as an antioxidant to protect unsaturated lipids from oxidative degradation. Vitamin A or its provitamin carotenoid forms support growth, are required for the differentiation and maintenance of epithelial tissue and can be converted to forms of the vitamin that are potent morphogens. Fish cannot synthesise either of the vitamins, so the maternal dietary content of each prior to oogenesis is an important determinant of reproductive fitness. Here we review the basic metabolism of vitamins E and A and carotenoids and their processing from the maternal diet and deposition into eggs. Evidence for the link between levels of each of the vitamins in eggs and measures of reproductive fitness are also discussed. -El desarrollo embrionario en peces es dependiente de los nutrientes esenciales presentes en el huevo. Las vitaminas E y A son críticas en el desarrollo normal de los embriones de los peces. La vitamina E funciona sobre todo como un antioxidante para proteger los lípidos no saturados contra la degradación oxidativa. La vitamina A, o los carotenoides formas de provitamina, se requieren para la diferenciación y el mantenimiento del tejido fino epitelial y se puede convertir a las formas de la vitamina que son morfogenes potentes. Los peces tampoco pueden sintetizar las vitaminas, de modo que el contenido dietético materno de cada una antes de la oogenesis es un determinante importante de la aptitud reproductiva. Aquí repasamos el metabolismo básico de las vitaminas E y A y los carotenoides y su procesamiento desde la dieta materna a la deposición en los huevos. Se discute también la evidencia del acoplamiento entre los niveles de cada una de las vitaminas en los huevos y las medidas de aptitud reproductiva en los adultos.

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“…Alpha-tocopherol content of the experimental diets was analysed using HPLC as described by Lie et al (1994).…”

Section: Biochemical Analysis Of Dietsmentioning

confidence: 99%

Low vitamin E in diet reduces stress resistance of gilthead seabream (Sparus aurata) juveniles

Montero

Tort

Robaina

et al. 2001

Fish & Shellfish Immunology

130

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Transport of alpha-tocopherol in Atlantic salmon (Salmo salar) during vitellogenesis

Cited by 101 publications

References 20 publications

Linking lipid dynamics with the reproductive cycle in Baltic cod Gadus morhua

Linking lipid dynamics with the reproductive cycle in Baltic cod Gadus morhua

Vitamins A and E in the maternal diet influence egg quality and early life stage development in fish: a review

Low vitamin E in diet reduces stress resistance of gilthead seabream (Sparus aurata) juveniles

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