Studies on toxicity of OTEC plant components on Eucalanus sp. from the Gulf of Mexico. Annual report, October 1980-September 1981
These bioassays were undertaken as a part of the environmental impact studies of the pollutants from the Ocean Thermal Energy Conversion (OTEC) plants. Ammonia and chlorine were selected as toxicants. Eucalanus pileatus and E. elongatus were used as experimental animals because of their importance in the food cycle of the commercial fisheries. A considerable amount of time was devoted to become familiar with the culturing procedures of the Eucalanus sp. and to adapt those procedures to laboratory needs. Algae cultures were developed with Rhizosolenia alata and Thalassiosira fluviatilis for use as food for the copepods. Collection and maintenance techniques for E. pileatus and E. elongatus were developed. Culturing operations were successful through the F/sub 1/ generation for E. pileatus. A mini-flow-through seawater bioassay system was designed and built for these studies. The system can also be used for running the bioassays with small organisms, embryos and larvae of fish, etc. In the chronic exposure the survival rates in the sublethal concentrations did not change significantly from the acute ammonia and chlorine bioassays. However, in the incipient lethal concentrations of ammonia and chlorine the survival rates decreased gradually. It was concluded that oceanic species like sargassum shrimp (Latreutes fucorum), filefish (Monocanthus hispidus) and copepods Eucalanus sp. were apparently more sensitive to toxicants than the mullet (Mugil cephalus) collected in inshore waters. Within the same species the tolerance to toxicity increased significantly with increasing size (age). Among the oceanic forms, sargassum shrimp appeared to be the hardiest of all species with filefish being most sensitive to ammonia. In chlorine sargassum shrimp exhibited a much greater tolerance toward ammonia than the copepods. The tolerance limits of small mullet (0.3 and 0.4g), which evidently were fresh arrivals from offshore, responded similarly to both toxicants as sargassum shrimp.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5248143
- Report Number(s):
- LBL-13916; ON: DE82012327
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
14 SOLAR ENERGY
AMMONIA
TOXICITY
CHLORINE
COPEPODS
BIOASSAY
ACUTE EXPOSURE
ALGAE
CHRONIC EXPOSURE
DESIGN
ENVIRONMENTAL IMPACTS
FISHES
LETHAL DOSES
SENSITIVITY
SHRIMP
STATISTICS
SURVIVAL TIME
ANIMALS
AQUATIC ORGANISMS
ARTHROPODS
CRUSTACEANS
DECAPODS
DOSES
ELEMENTS
HALOGENS
HYDRIDES
HYDROGEN COMPOUNDS
INVERTEBRATES
MATHEMATICS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NONMETALS
PLANTS
VERTEBRATES
520100* - Environment
Aquatic- Basic Studies- (-1989)
140800 - Solar Energy- Ocean Energy Systems