Northwest Fisheries Science Center

Display All Information

Document Type: Chapter or Section
Center: NWFSC
Document ID: 7676
Type of Book: Technical
Section or Chapter Title: Sublethal and lethal effects in two marine organisms, a juvenile echinoderm and a larval fish, exposed to contaminated sediments
Book Title: Oceans '89: an international conference addressing methods for understanding the global ocean. 18-21 September 1989, Seattle
Author: Edmundo Casillas, David A. Misitano, P. D. Plesha, Douglas D. Weber, C. R. Haley, S. Demuth, Michael H. Schiewe, Sin Lam Chan, U. Varanasi
Publication Year: 1989
Publisher: Institute of Electrical and Electronics Engineers, New York
Pages: 402-407

 In this preliminary report, we describe two new bioassy systems for assessing sediment toxicity and report the relative sensitivity of mortality and impaired growth as indicators of toxicant effects on the test organisms.  In these bioassays, juvenile sand dollars (Dendraster excentricus) and larval surf smelt (Hypomesus pretiosus) were exposed to serially diluted sediments from three urban areas with different types and levels of contamination.  Physical and biochemical measures of growth (i.e., length or diameter, DNA content, and protein content) were then evaluated for dose-responsiveness and sensitivity and compared with mortality as biological indicators of toxicant effects. 


URL1: The next link will exit from NWFSC web site