Use of molecular markers to study the effects of environmental impacts on genetic diversity in brown bullhead (Ameirus nebulosus) populations

Conservation biology needs sound biological information in order to maintain biological diversity in the face of the current rate of loss. An important component of the information needed is the level of genetic diversity within and between populations, especially for those species faced with exposu...

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Bibliographic Details
Published in:Environmental toxicology and chemistry 2001-11, Vol.20 (11), p.2580-2587
Main Authors: Silbiger, Richard N., Leonard, Anthony C., Dimsoski, Pero, Foré, Stephanie, Guttman, Sheldon I., Roth, Annette C., Gordon, Denise A., Wessendarp, Thomas, Toth, Greg P., Smith, M. Kate
Format: Article
Language:English
Subjects:
Agnatha. Pisces
Allozyme
Animal, plant and microbial ecology
Animals
Applied ecology
Biological and medical sciences
Biological indicator
Biomarkers - analysis
Conservation of Natural Resources
DNA Fingerprinting
Ecotoxicology, biological effects of pollution
Effects of pollution and side effects of pesticides on vertebrates
Environmental Pollutants - adverse effects
Fundamental and applied biological sciences. Psychology
Genetic diversity
Genetic Variation
Highly variable number tandem repeats
Ictaluridae - genetics
Random Amplified Polymorphic DNA Technique
Randomly amplified polymorphic DNA
Tandem Repeat Sequences - genetics
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Summary:Conservation biology needs sound biological information in order to maintain biological diversity in the face of the current rate of loss. An important component of the information needed is the level of genetic diversity within and between populations, especially for those species faced with exposure to environmental stressors. We applied multilocus DNA profile analysis (highly variable number tandem repeats [HVNTR] and randomly amplified polymorphic DNA [RAPD] techniques) and allozyme analysis to test whether individuals from historically degraded sites display levels of genetic diversity different from individuals taken from reference sites. Four Lake Erie tributaries, two impacted and two reference sites, were the sources of brown bullhead (Ameiurus nebulosus) samples. Pairwise comparison of the sampled populations demonstrated an association of decreased genetic diversity with exposure of brown bullhead to stressors using both RAPD and HVNTR analysis.
ISSN:0730-7268
1552-8618
DOI:10.1002/etc.5620201125