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Variation in tissue lipid content and fatty acid composition during ovarian maturation of unablated and ablated Penaeus monodon broodstock

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ficcpps_p166.pdf (195.0Kb) Open Access
Downloads: 1,162
Date
1985
Author
Millamena, Oseni M.
Pudadera, Rosario
Catacutan, Mae R.
Page views
3,138
ASFA keyword
biochemical composition ASFA
breeding stock ASFA
fatty acids ASFA
lipids ASFA
shrimp culture ASFA
AGROVOC keyword
Penaeus monodon AGROVOC
Taxonomic term
Penaeus monodon GBIF
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Abstract
The tissue lipid content and fatty acid composition in the hepatopancreas, tail muscle and gonad of unablated and ablated Penaeus monodon were determined. Females at various stages of maturity were collected from offshore spawning grounds in Tigbauan and Guimbal, Iloilo, Philippines. Ablated females were reared in captivity.

The hepatopancreas showed the highest lipid content at 15.72 to 25.20% in unablated females and 22.47 to 34.90% in ablated females. Fresh lipid levels averaged 2.60% with no marked variation throughout the maturation period. Ovarian lipid increased from 5.80% (unablated) and 7.50% (ablated) in Immature Ovaries to more than two-fold in Early Maturing Ovaries coupled with a drop in hepatopancreatic lipid suggesting lipid mobilization to the ovaries. In ablated females, ovarian lipid progressively increased to a maximum of 21.90% in Fully Mature Ovaries with a corresponding rise in hepatopancreatic lipid. Both the ovarian and hepatopancreatic lipids declined in spent females. Fatty acid profiles of the tissues consistently showed the presence of polyunsaturated fatty acids (PUFA) 20:4ω6, 20:5ω3 and 22:6ω3. These fatty acids were reflected in the spawned egg. The lipid level in the hepatopancreas appeared to be inversely related to the total PUFA concentration in the ovaries. Lipid accumulation in ablated females was significantly higher than in unablated females.

The findings suggest storage and subsequent utilization of lipids for maturation and spawning processes. The type of polyunsaturates present in the maturing ovaries is indicative of their metabolic and physiological importance in the reproductive process.
Description
Abstract only.
URI
http://hdl.handle.net/10862/912
Suggested Citation
Millamena, O. M., Pudadera, R., & Catacutan, M. R. (1985). Variation in tissue lipid content and fatty acid composition during ovarian maturation of unablated and ablated Penaeus monodon broodstock (Abstract only). In Taki Y., Primavera J.H. and Llobrera J.A. (Eds.). Proceedings of the First International Conference on the Culture of Penaeid Prawns/Shrimps, 4-7 December 1984, Iloilo City, Philippines (p. 166). Iloilo City, Philippines: Aquaculture Department, Southeast Asian Fisheries Development Center.
Type
Oral presentation
ISBN
9718511008
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  • Proceedings of the First International Conference on the Culture of Penaeid Prawns/Shrimps [79]

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