The ecological impact of different mechanisms of chronic sub-lethal toxicity on feeding and respiratory physiology

Willows, R. (1994) The ecological impact of different mechanisms of chronic sub-lethal toxicity on feeding and respiratory physiology. In: Sutcliffe, D.W. (ed.) Water quality & stress indicators in marine and freshwater systems: linking levels of organisation. Ambleside, UK, Freshwater Biological Association, pp. 88-97. (FBA Special Publications,4)

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Abstract

Sub-lethal toxicity tests, such as the scope-for-growth test, reveal simple relationships between measures of contaminant concentration and effect on respiratory and feeding physiology. Simple models are presented to investigate the potential impact of different mechanisms of chronic sub-lethal toxicity on these physiological processes. Since environmental quality is variable, even in unimpacted environments, toxicants may have differentially greater impacts in poor compared to higher quality environments. The models illustrate the implications of different degrees and mechanisms of toxicity in response to variability in the quality of the feeding environment, and variability in standard metabolic rate. The models suggest that the relationships between measured degrees of toxic stress, and the maintenance ration required to maintain zero scope-for-growth, may be highly nonlinear. In addition it may be possible to define critical levels of sub-lethal toxic effect above which no environment is of sufficient quality to permit prolonged survival.

Item Type: Book Section
Title: The ecological impact of different mechanisms of chronic sub-lethal toxicity on feeding and respiratory physiology
Personal Creator/Author:
CreatorsEmail
Willows, R.
Title of Book: Water quality & stress indicators in marine and freshwater systems: linking levels of organisation
Editors:
EditorsEmail
Sutcliffe, D.W.
Refereed: No
Series Name: FBA Special Publications
Number: 4
Page Range: pp. 88-97
Date: 1994
Publisher: Freshwater Biological Association
Place of Publication: Ambleside, UK
ISBN: 0-900386-53-3
Issuing Agency: Freshwater Biological Association
Uncontrolled Keywords: Toxicity; Sublethal effects; Toxicity tests; Models; Metabolism; Narcosis; Animal physiology; Risk management; Respiration
Subjects: Biology
Limnology
Pollution
Item ID: 5307
Depositing User: Hardy B Schwamm
Date Deposited: 10 May 2011 13:29
Last Modified: 29 Sep 2011 15:06
Related URLs:
URI: http://aquaticcommons.org/id/eprint/5307

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