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Significance and Use
5.1 Protection of a species requires the prevention of detrimental effects of chemicals on the survival, growth, reproduction, health, and uses of individuals of that species. Behavioral toxicity tests provide information concerning the sublethal effects of chemicals and signal the presence of toxic test substances.
5.1.1 The locomotory, feeding, and social responses of fish are adaptive and essential to survival. Major changes in these responses may result in a diminished ability to survive, grow, avoid predation, or reproduce and cause significant changes in the natural population (8). Fish behavioral responses are known to be highly sensitive to environmental variables as well as toxic substances.
5.2 Results from behavioral toxicity tests may be useful for measuring injury resulting from the release of hazardous materials (9).
5.3 Behavioral responses can also be qualitatively assessed in a systematic manner during toxicity tests to discern trends in sublethal contaminant effects (5) .
5.4 The assessment of locomotory, feeding, and social behaviors is useful for monitoring effluents and sediments from contaminated field sites as well as for defining no-effect concentrations in the laboratory or under controlled field conditions. Such behavioral modifications provide an index of sublethal toxicity and also indicate the potential for subsequent mortality.
5.5 Behavioral toxicity data can be used to predict the effects of exposure likely to occur in the natural environment (10).
5.6 Results from behavioral toxicity tests might be an important consideration when assessing the hazard of materials to aquatic organisms. Such results might also be used when deriving water quality criteria for fish and aquatic invertebrate organisms.
5.7 Results from behavioral toxicity tests can be used to compare the sensitivities of different species, the relative toxicity of different chemical substances on the same organism, or the effect of various environmental variables on the toxicity of a chemical substance.
5.9 The behavioral characteristics of a particular organism need to be understood and defined before a response can be used as a measure of toxicity (11). Swimming, feeding, and social behavior varies among species as well as among life stages within a species; the most effective test methods are therefore those tailored to a particular life stage of a single species. The range of variability of any behavioral response of unexposed organisms is influenced by genetic, experiential, physiological, and environmental factors. It is thus important to avoid selecting test organisms from populations that may vary in these factors.
5.10 Results of behavioral toxicity tests will depend on the behavioral response measured, testing conditions, water quality, species, genetic strain, life stage, health, and condition of test organisms. The behavioral response may therefore be affected by the test environment.
5.11 No numerical value or range of values has been defined as the norm for swimming, feeding, or social behavior for any fish; the detection of abnormal activity is therefore based on comparisons of the responses of exposed fish, either with activity measured during a baseline or pre-exposure period or observations of fish under a control treatment (10) .
1.1 This guide covers some general information on methods for qualitative and quantitative assessment of the behavioral responses of fish during standard laboratory toxicity tests to measure the sublethal effects of exposure to chemical substances. This guide is meant to be an adjunct to toxicity tests and should not interfere with those test procedures.
1.2 Behavioral toxicosis occurs when chemical or other stressful conditions, such as changes in water quality or temperature, induce a behavioral change that exceeds the normal range of variability (1). Behavior includes all of the observable, recordable, or measurable activities of a living organism and reflects genetic, neurobiological, physiological, and environmental determinants (2).
1.3 Behavioral methods can be used in biomonitoring, in the determination of no-observed-effect and lowest-observed-effect concentrations, and in the prediction of hazardous chemical impacts on natural populations (3).
1.4 The behavioral methods described in this guide include locomotory activity, feeding, and social responses, which are critical to the survival of fish (4).
Summary of Guide
Significance and Use
Qualitative Behavioral Assessment Method
Quantitative Behavioral Measurements
Calculation of Test Results
1.6 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. While some safety considerations are included in this guide, it is beyond the scope of this guide to encompass all safety requirements necessary to conduct behavioral toxicity tests. Specific hazards statements are given in Section 7.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
E140 Hardness Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness, Superficial Hardness, Knoop Hardness, and Scleroscope Hardness
E729 Guide for Conducting Acute Toxicity Tests on Test Materials with Fishes, Macroinvertebrates, and Amphibians
E1023 Guide for Assessing the Hazard of a Material to Aquatic Organisms and Their Uses
E1241 Guide for Conducting Early Life-Stage Toxicity Tests with Fishes
E1383 Guide for Conducting Sediment Toxicity Tests with Freshwater Invertebrates Withdrawn.
E1604 Guide for Behavioral Testing in Aquatic Toxicology
ICS Number Code 13.060.70 (Examination of biological properties of water)
UNSPSC Code 50121500(Fish); 77101501(Risk or hazard assessment)
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ASTM E1711-12, Standard Guide for Measurement of Behavior During Fish Toxicity Tests, ASTM International, West Conshohocken, PA, 2012, www.astm.orgBack to Top