scholarly journals Evaluating biological significance of chemical exposure to fish using a bioenergetics-based stressor-response model

1999 ◽  
Vol 56 (5) ◽  
pp. 823-829 ◽  
Author(s):  
Daniel W Beyers ◽  
James A Rice ◽  
William H Clements
Keyword(s):  
Largemouth Bass ◽  
Multiple Stressors ◽  
Micropterus Salmoides ◽  
Biological Significance ◽  
Chemical Exposure ◽  
Sensitivity Analyses ◽  
Response Model ◽  
Ecological Processes ◽  
Contaminant Exposure ◽  
Exposure Response

We demonstrate how contaminant exposure-response relationships can be integrated with a bioenergetics model to estimate the biological significance of sublethal exposure under fluctuating environmental conditions. The integrated bioenergetics-based stressor-response model (SRM) was evaluated by comparing observed and predicted growth of largemouth bass (Micropterus salmoides) exposed to several dieldrin concentrations and by conducting sensitivity analyses. Predictions of the SRM suggest that energetic effects of exposure of largemouth bass to ambient concentrations of dieldrin in lakes at the Rocky Mountain Arsenal National Wildlife Refuge are not biologically significant because the amount of energy lost by resident fish is small compared with variation in food consumption. Furthermore, influence of dieldrin exposure is small compared with the effects of a natural stressor like water temperature. The SRM provides a general framework for integrating laboratory-derived exposure-response relationships with ecological processes to determine the biological significance of multiple stressors in a natural environment. Comparisons of relative effects of anthropogenic and natural stressors can be used to assess potential costs and benefits of alternative ecosystem management strategies.

scholarly journals Estimating physiological cost of chemical exposure: integrating energetics and stress to quantify toxic effects in fish

1999 ◽  
Vol 56 (5) ◽  
pp. 814-822 ◽  
Author(s):  
Daniel W Beyers ◽  
James A Rice ◽  
William H Clements ◽  
Catherine J Henry
Keyword(s):  
Metabolic Rate ◽  
Food Consumption ◽  
Growth Rates ◽  
Physiological Stress ◽  
Micropterus Salmoides ◽  
Biological Significance ◽  
Empirical Support ◽  
Chemical Exposure ◽  
Consumption Activity ◽  
Induced Changes

We present empirical support for a conceptual framework in which chemical contaminants are considered as sources of physiological stress to fish. Physiological stress was quantified in terms of energy by measuring routine metabolism, food consumption, activity, and growth rates of largemouth bass (Micropterus salmoides) exposed to the organochlorine pesticide dieldrin. Regression analysis was used to estimate models that describe the response of each endpoint as a function of dieldrin concentration and duration of exposure. Metabolic rate, consumption, and growth were influenced by chemical exposure. At short durations of exposure (1-4 days), metabolic rate of exposed fish was depressed compared with controls, but at a longer duration (16 days), metabolic rate increased as a function of concentration. Food consumption and growth rates of fish exposed for 16 days declined as dieldrin concentration increased. The response of each endpoint was consistent with predictions of the general adaptation syndrome. Energetic costs of contaminant-induced changes in metabolism and food consumption can be integrated with a bioenergetics model to demonstrate biological significance of chemical exposure in a natural environment.

Pathogeny of disease characterized by swollen liver and spleen in largemouth bass (Micropterus salmoides)

2013 ◽  
Vol 18 (3) ◽  
pp. 654-659 ◽  
Author(s):  
Dongmei MA ◽  
Guocheng DEND ◽  
Junjie BAI ◽  
Shengjie LI ◽  
Xiaoyan JIANG ◽  
...  
Keyword(s):  
Largemouth Bass ◽  
Micropterus Salmoides

Assessment of caudal fin clip as a non-lethal technique for predicting muscle tissue mercury concentrations in largemouth bass

2008 ◽  
Vol 5 (3) ◽  
pp. 200 ◽  
Author(s):  
S. A. Ryba ◽  
J. L. Lake ◽  
J. R. Serbst ◽  
A. D. Libby ◽  
S. Ayvazian
Keyword(s):  
Rhode Island ◽  
Muscle Tissue ◽  
Largemouth Bass ◽  
Total Mercury ◽  
Micropterus Salmoides ◽  
Mercury Contamination ◽  
Caudal Fin ◽  
Minimal Impact ◽  
Fish Consumption Advisories ◽  
Relationship Of

Environmental context. In the development of fish consumption advisories, fisheries biologists routinely sacrifice fish and analyse muscle fillets in order to determine the extent of mercury contamination. Such lethal techniques may not be suitable for endangered species or limited fish populations from smaller-sized water bodies. We compared the measured total mercury concentrations in tail fin clips to that of muscle fillets and illustrated that tail fin clips may be used as an accurate tool for predicting mercury in muscle tissue. This is the first study on the use of tail fin clips to predict mercury levels in the muscle tissue of largemouth bass with minimal impact on the fish. Abstract. The statistical relationship between total mercury (Hg) concentration in clips from the caudal fin and muscle tissue of largemouth bass (Micropterus salmoides) from 26 freshwater sites in Rhode Island, USA was developed and evaluated to determine the utility of fin clip analysis as a non-lethal and convenient method for predicting mercury concentrations in tissues. The relationship of total Hg concentrations in fin clips and muscle tissue showed an r2 of 0.85 and may be compared with an r2 of 0.89 for Hg concentrations between scales and muscle tissue that was determined in a previous study on largemouth bass. The Hg concentration in fin clip samples (mean = 0.261 μg g–1 (dry)) was more than a factor of twenty greater than in the scale samples (mean = 0.012 μg g–1 (dry)). Therefore, fin clips may be a more responsive non-lethal predictor of muscle-Hg concentrations than scale in fish species which may have reduced Hg concentrations.

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