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

C. C. Liu; P. K S Shin; S. G. Cheung

doi:10.1016/j.marpolbul.2014.03.013

Author(s)

C. C. Liu
P. K S Shin
S. G. Cheung

Related Research Unit(s)

State Key Laboratory of Marine Pollution (City University of Hong Kong)

Detail(s)

Original language	English
Pages (from-to)	109-116
Journal / Publication	Marine Pollution Bulletin
Volume	82
Issue number	1-2
Publication status	Published - 15 May 2014

Link(s)

DOI	DOI https://doi.org/10.1016/j.marpolbul.2014.03.013 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-84899977039&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(8885345f-697f-4739-8772-bd0d7c4e7aa5).html

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.