The effect of salinity change on the oxygen consumption and swimming activity of the high-shore rockpool copepod Tigriopus brevicornis

R McAllen, A Taylor

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

Tigriopus brevicornis is the dominant member of the fauna in high-shore rockpools (above the mean high water of spring tides) that are subject to extreme environmental variation especially in salinity due to infrequent tidal inundation. The present study was designed to assess the effect of large-scale salinity change on the rate of oxygen consumption and levels of activity. Measurements of the rates of oxygen consumption (V-o2) of T brevicornis in response to simulated changes in salinity (of a magnitude that had previously been recorded in high-shore rock pools inhabited by T. brevicornis) were carried out using closed respirometry. Activity levels of T. brevicornis during exposure to three different salinities (10, 33 and 90 psu) were assessed by means of video image analysis. The study showed that T. brevicornis exhibits a reduction in activity and in oxygen consumption when exposed to higher salinities. However, individuals exposed to low salinities showed elevated rates of oxygen consumption without an associated increase in activity. The present study indicates that animals living in high-shore rockpools may incur a considerable energetic cost, due to the rapid and large-scale environmental changes that are characteristic of this habitat. (C) 2001 Elsevier Science B.V. All rights reserved.

Original languageEnglish
Pages (from-to)227-240
Number of pages14
JournalJournal of Experimental Marine Biology and Ecology
Volume263
Publication statusPublished - 2001

Keywords

  • activity
  • high-shore rockpools
  • oxygen consumption
  • salinity change
  • Tigriopus brevicornis
  • viscous environments
  • POOLS

Cite this

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title = "The effect of salinity change on the oxygen consumption and swimming activity of the high-shore rockpool copepod Tigriopus brevicornis",
abstract = "Tigriopus brevicornis is the dominant member of the fauna in high-shore rockpools (above the mean high water of spring tides) that are subject to extreme environmental variation especially in salinity due to infrequent tidal inundation. The present study was designed to assess the effect of large-scale salinity change on the rate of oxygen consumption and levels of activity. Measurements of the rates of oxygen consumption (V-o2) of T brevicornis in response to simulated changes in salinity (of a magnitude that had previously been recorded in high-shore rock pools inhabited by T. brevicornis) were carried out using closed respirometry. Activity levels of T. brevicornis during exposure to three different salinities (10, 33 and 90 psu) were assessed by means of video image analysis. The study showed that T. brevicornis exhibits a reduction in activity and in oxygen consumption when exposed to higher salinities. However, individuals exposed to low salinities showed elevated rates of oxygen consumption without an associated increase in activity. The present study indicates that animals living in high-shore rockpools may incur a considerable energetic cost, due to the rapid and large-scale environmental changes that are characteristic of this habitat. (C) 2001 Elsevier Science B.V. All rights reserved.",
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author = "R McAllen and A Taylor",
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TY - JOUR

T1 - The effect of salinity change on the oxygen consumption and swimming activity of the high-shore rockpool copepod Tigriopus brevicornis

AU - McAllen, R

AU - Taylor, A

PY - 2001

Y1 - 2001

N2 - Tigriopus brevicornis is the dominant member of the fauna in high-shore rockpools (above the mean high water of spring tides) that are subject to extreme environmental variation especially in salinity due to infrequent tidal inundation. The present study was designed to assess the effect of large-scale salinity change on the rate of oxygen consumption and levels of activity. Measurements of the rates of oxygen consumption (V-o2) of T brevicornis in response to simulated changes in salinity (of a magnitude that had previously been recorded in high-shore rock pools inhabited by T. brevicornis) were carried out using closed respirometry. Activity levels of T. brevicornis during exposure to three different salinities (10, 33 and 90 psu) were assessed by means of video image analysis. The study showed that T. brevicornis exhibits a reduction in activity and in oxygen consumption when exposed to higher salinities. However, individuals exposed to low salinities showed elevated rates of oxygen consumption without an associated increase in activity. The present study indicates that animals living in high-shore rockpools may incur a considerable energetic cost, due to the rapid and large-scale environmental changes that are characteristic of this habitat. (C) 2001 Elsevier Science B.V. All rights reserved.

AB - Tigriopus brevicornis is the dominant member of the fauna in high-shore rockpools (above the mean high water of spring tides) that are subject to extreme environmental variation especially in salinity due to infrequent tidal inundation. The present study was designed to assess the effect of large-scale salinity change on the rate of oxygen consumption and levels of activity. Measurements of the rates of oxygen consumption (V-o2) of T brevicornis in response to simulated changes in salinity (of a magnitude that had previously been recorded in high-shore rock pools inhabited by T. brevicornis) were carried out using closed respirometry. Activity levels of T. brevicornis during exposure to three different salinities (10, 33 and 90 psu) were assessed by means of video image analysis. The study showed that T. brevicornis exhibits a reduction in activity and in oxygen consumption when exposed to higher salinities. However, individuals exposed to low salinities showed elevated rates of oxygen consumption without an associated increase in activity. The present study indicates that animals living in high-shore rockpools may incur a considerable energetic cost, due to the rapid and large-scale environmental changes that are characteristic of this habitat. (C) 2001 Elsevier Science B.V. All rights reserved.

KW - activity

KW - high-shore rockpools

KW - oxygen consumption

KW - salinity change

KW - Tigriopus brevicornis

KW - viscous environments

KW - POOLS

M3 - Article

VL - 263

SP - 227

EP - 240

JO - Journal of Experimental Marine Biology and Ecology

JF - Journal of Experimental Marine Biology and Ecology

SN - 0022-0981

ER -