Effects of a crude oil and an oil dispersant (Corexit 9527) on populations of the littleneck clam (protothaca staminea)

E. B. HARTWICK, Shiu Sun Rudolf WU, D. B. PARKER

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Field and laboratory experiments were carried out to investigate the effects of Alberta crude oil and an oil dispersant (Corexit 9527) on the larval settlement, survival, siphon activities and behaviour of the littleneck clam (Protothaca staminea). Corexit 9527 was much more toxic than crude oil, and the highest toxicity was obtained when Corexit 9527 was mixed with crude oil. Siphon activities were impaired and abnormal behaviour was exhibited when adult clams were treated with 100 ppm Corexit 9527, 1000 ppm crude oil or a combination of both. Larval settlement was not affected when the substratum was treated with 1000ppm crude oil but was retarded when the substratum was treated with a mixture of 1000 ppm oil and 100 ppm Corexit 9527. Gas chromatograms also showed that the retention time and depth of penetration of hydrocarbons in the substratum was increased when Corexit 9527 was used with crude oil. Copyright © 1982 Published by Elsevier Ltd.

Original languageEnglish
Pages (from-to)291-306
JournalMarine Environmental Research
Volume6
Issue number4
DOIs
Publication statusPublished - Jun 1982

Fingerprint

dispersant
clams
crude oil
Crude oil
oils
oil
Siphons
larval settlement
abnormal behavior
Toxicity
effect
Oils
penetration
Hydrocarbons
Alberta
hydrocarbon
toxicity
hydrocarbons
gases
Gases

Citation

Hartwick, E. B., Wu, R. S. S., & Parker, D. B. (1982). Effects of a crude oil and an oil dispersant (Corexit 9527) on populations of the littleneck clam (protothaca staminea). Marine Environmental Research, 6(4), 291-306. doi: 10.1016/0141-1136(82)90043-5