Skip to Navigation
Auburn University Homepage
A-Z Index | Map | People Finder
Auburn University Logo
Electronic Theses and Dissertations
Skip to Main Content
Main Navigation 
  • AUETD Home
  • Graduate School
JavaScript is disabled for your browser. Some features of this site may not work without it.
View Item 
  •   AUETD Home
  • View Item
  •   AUETD Home
  • View Item

Factors Influencing Bioaccumulation of Polychlorinated Biphenyls in Six Fish Species in Logan Martin Reservoir, Alabama

View/Open
Extracted text (99.66Kb)
MITCHELL_JUSTIN_27.pdf (1.234Mb)
Date
2006-05-15
Author
Mitchell, Justin
Type of Degree
Thesis
Department
Fisheries and Allied Aquacultures
Metadata
Show full item record
Abstract
The objective of this project was to evaluate the biological and environmental factors that influenced the bioaccumulation of polychlorinated biphenyls (PCB) in the consumptive portions of fish. I investigated the relationships of seven different factors that might potentially impact the uptake of PCBs in fillets in largemouth bass Micropterus salmoides, spotted bass Micropterus punctulatus, striped bass Morone saxatilus, black crappie Pomoxis nigromaculatus, and freshwater drum Aplodinotus grunniens from Logan Martin Reservoir, Alabama (N=1022). These factors include temporal trends, spatial trends (distance at capture), lipid content, total length, relative weight, age, and gender. Regression techniques were employed to identify those variables having the most influence on PCB concentrations in fish fillets of each species. Regression modeling was evaluated at two contrasting conditions: relatively high (1996) and low concentrations (2001-2002). In these models, lipid content and distance at capture appeared to be the dominant predictors of PCBs in all six species. Total length, relative weight, and gender (2001-2002 only) also explained some additional variability in a few species. In addition, PCB concentrations were not related to fish age for any species in the relatively low concentration period (2001-2002). Multiple regression modeling for PCB trends concluded that the natural log transformation of PCB concentrations (lnPCB) declined significantly (p<0.05) from 1996 to 2002 in all six species when evaluated for differences between the three sampling years (1996, 2001, and 2002). In these final models, all six species were positively related to lipid content and every species except striped bass were negatively related to distance at capture. However, the influence of each of these variables on PCB concentrations was species specific and highly variable. ANOVA testing along with Dunnett’s C post hoc tests showed PCB concentrations in striped bass and spotted bass were significantly greater than the other species evaluated. Species specific regression models that include these bioaccumulative factors should be integrated into PCB monitoring plans associated with fish consumption advisories.
Files
Name:
MITCHELL_JUSTIN_27.pdf.txt  
Size:
99.66Kb
Name:
MITCHELL_JUSTIN_27.pdf  
Size:
1.234Mb
URI
http://hdl.handle.net/10415/409

Browse

All of AUETDBy Issue DateAuthor / AdvisorTitlesDepartments

My Account

Login

Auburn University Libraries | 231 Mell Street | Auburn, Alabama 36849 | (334) 844-4500 or (800) 446-0387 |

 

Auburn University |Auburn, Alabama 36849 |(334) 844-4000 |

Website Feedback |Privacy |Copyright ©