The environmental effects of salinity and temperature on the oxygen consumption and total body osmolality of the marine flatworm Procerodes littoralis

R McAllen, D Walker, A Taylor

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The present study examined the effect of salinity and temperature on the rate of oxygen consumption and total body osmolality of the triclad turbellarian Procerodes littoralis, a common marine flatworm normally found in areas where freshwater streams run out over intertidal areas. Extremes in environmental factors encountered by P. littoralis were recorded at the study site. These were salinity (0-44 psu), temperature (2.7-24.9 degreesC) and oxygen concentration (2.8-16.1 mg 1(-1)). Respirometry experiments showed minimal oxygen consumption rates at the salinity extremes encountered by the study species (0 and 40 psu). Further experiments showed relatively constant oxygen consumption rates over the temperature range 5-20 C and elevated consumption rates at temperatures above 25 degreesC. Total body osmolality of P littoralis increased with increasing salinity. The study illustrates how a marine flatworm uses integrated physiological and behavioural mechanisms to successfully inhabit an environment that is predominantly freshwater for up to 75% of the tidal cycle. (C) 2002 Elsevier Science B.V. All rights reserved.

Original languageEnglish
Pages (from-to)103-113
Number of pages11
JournalJournal of Experimental Marine Biology and Ecology
Volume268
Publication statusPublished - 2002

Keywords

  • Procerodes littoralis
  • turbellaria
  • oxygen consumption
  • osmolality
  • salinity
  • COPEPOD TIGRIOPUS-BREVICORNIS

Cite this

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title = "The environmental effects of salinity and temperature on the oxygen consumption and total body osmolality of the marine flatworm Procerodes littoralis",
abstract = "The present study examined the effect of salinity and temperature on the rate of oxygen consumption and total body osmolality of the triclad turbellarian Procerodes littoralis, a common marine flatworm normally found in areas where freshwater streams run out over intertidal areas. Extremes in environmental factors encountered by P. littoralis were recorded at the study site. These were salinity (0-44 psu), temperature (2.7-24.9 degreesC) and oxygen concentration (2.8-16.1 mg 1(-1)). Respirometry experiments showed minimal oxygen consumption rates at the salinity extremes encountered by the study species (0 and 40 psu). Further experiments showed relatively constant oxygen consumption rates over the temperature range 5-20 C and elevated consumption rates at temperatures above 25 degreesC. Total body osmolality of P littoralis increased with increasing salinity. The study illustrates how a marine flatworm uses integrated physiological and behavioural mechanisms to successfully inhabit an environment that is predominantly freshwater for up to 75{\%} of the tidal cycle. (C) 2002 Elsevier Science B.V. All rights reserved.",
keywords = "Procerodes littoralis, turbellaria, oxygen consumption, osmolality, salinity, COPEPOD TIGRIOPUS-BREVICORNIS",
author = "R McAllen and D Walker and A Taylor",
year = "2002",
language = "English",
volume = "268",
pages = "103--113",
journal = "Journal of Experimental Marine Biology and Ecology",
issn = "0022-0981",
publisher = "Elsevier Science B. V.",

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TY - JOUR

T1 - The environmental effects of salinity and temperature on the oxygen consumption and total body osmolality of the marine flatworm Procerodes littoralis

AU - McAllen, R

AU - Walker, D

AU - Taylor, A

PY - 2002

Y1 - 2002

N2 - The present study examined the effect of salinity and temperature on the rate of oxygen consumption and total body osmolality of the triclad turbellarian Procerodes littoralis, a common marine flatworm normally found in areas where freshwater streams run out over intertidal areas. Extremes in environmental factors encountered by P. littoralis were recorded at the study site. These were salinity (0-44 psu), temperature (2.7-24.9 degreesC) and oxygen concentration (2.8-16.1 mg 1(-1)). Respirometry experiments showed minimal oxygen consumption rates at the salinity extremes encountered by the study species (0 and 40 psu). Further experiments showed relatively constant oxygen consumption rates over the temperature range 5-20 C and elevated consumption rates at temperatures above 25 degreesC. Total body osmolality of P littoralis increased with increasing salinity. The study illustrates how a marine flatworm uses integrated physiological and behavioural mechanisms to successfully inhabit an environment that is predominantly freshwater for up to 75% of the tidal cycle. (C) 2002 Elsevier Science B.V. All rights reserved.

AB - The present study examined the effect of salinity and temperature on the rate of oxygen consumption and total body osmolality of the triclad turbellarian Procerodes littoralis, a common marine flatworm normally found in areas where freshwater streams run out over intertidal areas. Extremes in environmental factors encountered by P. littoralis were recorded at the study site. These were salinity (0-44 psu), temperature (2.7-24.9 degreesC) and oxygen concentration (2.8-16.1 mg 1(-1)). Respirometry experiments showed minimal oxygen consumption rates at the salinity extremes encountered by the study species (0 and 40 psu). Further experiments showed relatively constant oxygen consumption rates over the temperature range 5-20 C and elevated consumption rates at temperatures above 25 degreesC. Total body osmolality of P littoralis increased with increasing salinity. The study illustrates how a marine flatworm uses integrated physiological and behavioural mechanisms to successfully inhabit an environment that is predominantly freshwater for up to 75% of the tidal cycle. (C) 2002 Elsevier Science B.V. All rights reserved.

KW - Procerodes littoralis

KW - turbellaria

KW - oxygen consumption

KW - osmolality

KW - salinity

KW - COPEPOD TIGRIOPUS-BREVICORNIS

M3 - Article

VL - 268

SP - 103

EP - 113

JO - Journal of Experimental Marine Biology and Ecology

JF - Journal of Experimental Marine Biology and Ecology

SN - 0022-0981

ER -