Respiration rate and swimming activity of larvae of two sub-tidal nassariid gastropods under reduced oxygen levels : Implications for their distributions in Hong Kong waters

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

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)230-236
Journal / PublicationMarine Pollution Bulletin
Volume63
Issue number5-12
Publication statusPublished - 2011

Abstract

The effects of hypoxia on the larvae of two sub-tidal nassariid gastropods, Nassarius siquijorensis and N. conoidalis were compared so as to understand how the species-specific tolerance to hypoxia might have resulted in changes in the abundance and distribution of these two species in the hypoxic Tolo Harbour, Hong Kong, since the 1980s. Respiration rates of N. siquijorensis and N. conoidalis larvae were reduced at 4.5mg O2 l-1, or below, as compared with the normoxic control. Significant reduction in swimming velocity was also observed for 10-day old larvae which were exposed to 2 l-1 for N. siquijorensis and 2 l-1 for N. conoidalis. The 48h LC50 values of N. siquijorensis and N. conoidalis larvae were 0.7 and 1.7mg O2 l-1, respectively. The results suggested that N. siquijorensis are more tolerant to hypoxia than N. conoidalis. © 2011 Elsevier Ltd.

Research Area(s)

  • Gastropods, Hypoxia, Nassariid, Respiration, Swimming activity

Citation Format(s)

Respiration rate and swimming activity of larvae of two sub-tidal nassariid gastropods under reduced oxygen levels : Implications for their distributions in Hong Kong waters. / Liu, C. C.; Chiu, J. M Y; Li, L.; Shin, P. K S; Cheung, S. G.

In: Marine Pollution Bulletin, Vol. 63, No. 5-12, 2011, p. 230-236.

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