The larvae of congeneric gastropods showed differential responses to the combined effects of ocean acidification, temperature and salinity

Haoyu Zhang; S. G. Cheung; Paul K.S. Shin

doi:10.1016/j.marpolbul.2014.01.008

Author(s)

Haoyu Zhang
S. G. Cheung
Paul K.S. Shin

Related Research Unit(s)

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

Detail(s)

Original language	English
Pages (from-to)	39-46
Journal / Publication	Marine Pollution Bulletin
Volume	79
Issue number	1-2
Online published	20 Jan 2014
Publication status	Published - 15 Feb 2014

Link(s)

DOI	DOI https://doi.org/10.1016/j.marpolbul.2014.01.008 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-84893857486&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(202c2487-e0cd-4558-804c-314eec8ea7e0).html

Abstract

The tolerance and physiological responses of the larvae of two congeneric gastropods, the intertidal Nassarius festivus and subtidal Nassarius conoidalis, to the combined effects of ocean acidification (pCO₂ at 380, 950, 1250ppm), temperature (15, 30°C) and salinity (10, 30psu) were compared. Results of three-way ANOVA on cumulative mortality after 72-h exposure showed significant interactive effects in which mortality increased with pCO₂ and temperature, but reduced at higher salinity for both species, with higher mortality being obtained for N. conoidalis. Similarly, respiration rate of the larvae increased with temperature and pCO₂ level for both species, with a larger percentage increase for N. conoidalis. Larval swimming speed increased with temperature and salinity for both species whereas higher pCO₂ reduced swimming speed in N. conoidalis but not N. festivus. The present findings indicated that subtidal congeneric species are more sensitive than their intertidal counterparts to the combined effects of these stressors. © 2014 Elsevier Ltd.