||Modification of the Feeding Behavior of Marine Copepods by Sub-Lethal Concentrations of Water-Accommodated Fuel Oil.
Berman, M. S. ;
Heinle, D. R. ;
||Rhode Island Univ., Kingston.;Environmental Research Lab., Narragansett, RI.
||EPA-CR-80-7795; EPA-600/J-80-388 ; ERLN-X26
Fuel oil ;
Feeding habits ;
Oil pollution ;
Water pollution effects(Animals)
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
The feeding behaviors of Acartia clausi and A. tonsa were measured in samples of water containing low levels of a water-accommodated fraction of No. 2 fuel oil. The copepods fed normally at a hydrocarbon concentration of 70 micrograms/l, but their feeding behavior was altered both quantitatively and qualitatively at a concentration of 250 micrograms/l. Three types of response to the higher oil level were found. The first was total suppression of feeding. Both other types involved suppression of feeding on particles between 7 and 15 micro m diameter, but one showed no change in the ingestion of larger particles, whereas the other displayed increased feeding on particles larger than 15 micro m diamter.