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The content of ascorbic acid and tocopherol in the tissues and eggs of wild Macrobrachium rosenbergii during maturation
Cavalli, R.O.; Tamtin, M.; Lavens, P.; Sorgeloos, P.; Nelis, H.J.; De Leenheer, A.P. (2001). The content of ascorbic acid and tocopherol in the tissues and eggs of wild Macrobrachium rosenbergii during maturation, in: VLIZ Coll. Rep. 31(2001). VLIZ Collected Reprints: Marine and Coastal Research in Flanders, 31: pp. chapter 10
In: (2001). VLIZ Coll. Rep. 31(2001). VLIZ Collected Reprints: Marine and Coastal Research in Flanders, 31. Flanders Marine Institute (VLIZ): Oostende, more
In: VLIZ Collected Reprints: Marine and Coastal Research in Flanders. Vlaams Instituut voor de Zee: Oostende. ISSN 1376-3822, more

Also published as
  • Cavalli, R.O.; Tamtin, M.; Lavens, P.; Sorgeloos, P.; Nelis, H.J.; De Leenheer, A.P. (2001). The content of ascorbic acid and tocopherol in the tissues and eggs of wild Macrobrachium rosenbergii during maturation. J. Shellfish Res. 20(3): 939-943, more

Available in Authors 
    VLIZ: Open Repository 98610 [ OMA ]

Keywords
    Animal nutrition; Animal reproductive organs; Antioxidants; Biological development; Chemical composition; Diets; Eggs; Females; Gonads; Natural populations; Ovaries; Prawn culture; Sexual maturity; Sexual reproduction; Tissues; Vitamin C; Vitamin E; Vitamins; Macrobrachium rosenbergii (de Man, 1879) [WoRMS]; Brackish water; Fresh water
Author keywords
    ascorbic acid; tocopherols; Macrobrachium rosenbergii; wild; reproduction; nutrition

Authors  Top 
  • Cavalli, R.O.
  • Tamtin, M.
  • Lavens, P., more
  • Sorgeloos, P., more
  • Nelis, H.J.
  • De Leenheer, A.P.

Abstract
    Variations in the concentrations of ascorbic acid (AA) and tocopherols in association with the gonadal development of the freshwater prawn Macrobrachium rosenbergii were investigated in females captured in the Mae Klong River, Thailand. Mean ovarian AA levels ranged from 210 to 540 µg/g dry weight (dw) and were at least 11-fold higher than midgut gland (MG) levels. Variations in ovarian AA levels are believed to be related to the biosynthesis of steroid hormones, the formation of collagen, and the deposition of egg yolk compounds. alpha-Tocopherol (alpha-T) was the predominant form of vitamin E in prawn tissues and eggs. The level of alpha-T in the MG was constant, whereas in the ovaries, it ranged from 143 to 425 µg/g dw. The incorporation of a-T into the ovary was highly correlated (r² = 0.87) to ovarian lipid levels, which probably reflects the role of this vitamin as a major antioxidant agent. The present results provide further evidence of the essentiality of these vitamins in crustacean reproduction.

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