Comparisons of the metabolic responses of two subtidal nassariid gastropods to hypoxia and re-oxygenation

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Detail(s)

Original languageEnglish
Pages (from-to)109-116
Journal / PublicationMarine Pollution Bulletin
Volume82
Issue number1-2
Publication statusPublished - 15 May 2014

Abstract

Changes in the levels of carbohydrate, lipid, protein and anaerobic metabolites (succinate, lactate, acetate, fumarate and propionate), upon exposure to hypoxia (1.5mg O2l-1) and after reoxygenation in subtidal gastropods Nassarius siquijorensis and N. conoidalis, were compared. A significant decrease of the glycogen content was observed under hypoxia in N. conoidalis but not in N. siquijorensis. A greater increase in the concentrations of anaerobic metabolites was observed in N. conoidalis under hypoxia, and their levels did not return to baseline after returning to normoxia for 24h. In contrast, a lower rate of accumulation of the metabolites was observed in N. siquijorensis, and complete recovery from anaerobic metabolism was observed after reoxygenation. The results lend further support to the role of hypoxia in governing the different distributional patterns between the two subtidal gastropods in Hong Kong waters. © 2014 Elsevier Ltd.

Research Area(s)

  • Anaerobic metabolites, Glycogen, Hypoxia, Lipid, Nassarius, Reoxygenation