Date of Award

Fall 1989

Document Type


Degree Name

Master of Science (MS)


Biological Sciences


Biological Sciences

Committee Director

Raymond W. Alden

Committee Member

Daniel M. Dauer

Committee Member

Frank P. Day, Jr.

Call Number for Print

Special Collections LD4331.B46 F75


Neanthes virens were subjected to a toxicity test with 1.8, 3.4, 6.7 and 11.0 mg/1 Cd2+. Worms were withdrawn on Days 1, 4, 7, 10 and 14 from each of five replicate tanks and their caloric content determined by bomb calorimetry. Analyses of variance and covariance showed no significant differences in worm caloric content with withdrawal day or cadmium concentration.

In a second experimental series, a sediment toxicity test with Neanthes virens was conducted in contaminated sediments from two sites, as well as reference sediments from a control site. Caloric content of the worms was measured by bomb calorimetry at Day 14. The results indicated no difference between the caloric contents of the worms exposed to sediments from the three sites. The paper presents various methods of sublethal stress measurement and suggests reasons for lack of significant results.


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