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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. J. Shellfish Res. 20(3): 939-943 In: Journal of Shellfish Research. National Shellfisheries Association: Duxbury. ISSN 0730-8000; e-ISSN 1943-6319

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Beschikbaar in	Auteurs
VLIZ: Open access 263006 [ download pdf ]

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Trefwoorden

Agents > Antioxidants Anatomical structures > Body organs > Animal organs > Animal reproductive organs Biological development Cells > Sexual cells > Eggs Composition > Chemical composition Cultures > Shellfish culture > Crustacean culture > Prawn culture Diets Natural populations Nutrition > Animal nutrition Properties > Biological properties > Sexual maturity Reproduction > Sexual reproduction Secretory organs > Glands > Endocrine glands > Animal reproductive organs > Gonads Secretory organs > Glands > Endocrine glands > Animal reproductive organs > Gonads > Ovaries Sex > Females Tissues Vitamins Vitamins > Vitamin C Vitamins > Vitamin E Macrobrachium rosenbergii (De Man, 1879) [WoRMS] Brak water; Zoet water

Author keywords

ascorbic acid; tocopherols; Macrobrachium rosenbergii; wild; reproduction; nutrition

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

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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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