
	Pakistan Journal of Biological Sciences
	Year: 2020 \| Volume: 23 \| Issue: 5 \| Page No.: 685-690 DOI: 10.3923/pjbs.2020.685.690

Salinity and Preservation Conditions of Lipofuscin Extracts in Blue Swimming Crab, Portunus pelagicus

Mat Ghani Hilmi and Mhd Ikhwanuddin

Abstract: Background and Objective: Fundamental information on how environmental conditions affect lipofuscin (LF) levels could be useful to those furthering the development of an effective management plan to control certain populations in certain geographical areas. Thus, the effects of salinity upon LF levels were examined using 7 salinities in the range 10-40% (increasing in steps of 5%). Materials and Methods: The impacts of freezing preservation were also examined for 60 crab samples with carapace widths of 7-8 cm randomly allocated for either immediate or post-freezing (-80°C) analysis. Results: The result showed that 25% salinity was optimum for LF accumulation in both males and females crabs. The mean value of LF production was higher for males compared to females. Higher and lower salinity of 10 and 40% were the most stressed conditions for LF accumulation. The LF index (LI) of P. pelagicus decreased in salinities below and above the typical range. Conclusion: For both sexes, the frozen samples exhibited notably higher LI values than the fresh samples (p<0.05). These results will be applicable in numerous respects, for example in the selection of farm locations and for optimising productivity by controlling salinity levels.

PDF Fulltext XML References Citation Report Citation

How to cite this article:

Mat Ghani Hilmi and Mhd Ikhwanuddin, 2020. Salinity and Preservation Conditions of Lipofuscin Extracts in Blue Swimming Crab, Portunus pelagicus. Pakistan Journal of Biological Sciences, 23: 685-690.

DOI: 10.3923/pjbs.2020.685.690

URL: https://scialert.net/abstract/?doi=pjbs.2020.685.690

COMMENT ON THIS PAPER

Navigation


		Online First
		Current Issue
		Previous Issues
		Editorial Board
		Submit a Manuscript
		Guide to Authors
		Subscribe to E-alerts

Indexed In


		AGRIS
		ASCI-Database
		Asian Digital Library
		Cambridge Scientific Abstract
		Chemical Abstract Services
		Google Scholar
		ISI Web of Knowledge
		PubMed
		SCIMAGO
		Thomson ISI

Science Alert