| Effects of two oil dispersants on phototaxis and swimming behaviour of barnacle larvae | |
| Wu, RSS; Lam, PKS; Zhou, BS | |
| 1997 | |
| Conference Name | Asia-Pacific Conference on Science and Management of Coastal Environment |
| Source Publication | HYDROBIOLOGIA |
| Pages | 9-16 |
| Conference Date | JUN 25-28, 1996 |
| Conference Place | HONG KONG, HONG KONG |
| Department | CITY UNIV HONG KONG,DEPT BIOL & CHEM,KOWLOON,HONG KONG; CHINESE ACAD SCI,INST HYDROBIOL,WUHAN,PEOPLES R CHINA |
| Abstract | The effects of two oil dispersants (Vecom B-1425 GL and Norchem OSD-570) mixed with diesel oil on the survival and behaviour of the stage II nauplii of the barnacle Balanus amphitrite were investigated. The 24 and 48-hour LC50 values for Vecom B-1425 GL:diesel mixture were 514 and 48 mg l(-1) respectively, while respective values for Norchem OSD-570:diesel mixture were 505 and 71 mg l(-1). Under sublethal concentrations, increased levels of the dispersant:diesel mixtures caused a reduction in phototactic responses. Balanus amphitrite nauplii failed to exhibit phototactic responses when exposed to Vecom B-1425 GL:diesel mixtures of 400 mg l(-1) and higher for 24 hours. A longer exposure time of 48 hours further reduced the Lowest Observable Effect Concentrations (LOECs) to 60 mg l(-1). The LOECs for Norchem OSD-570:diesel mixtures under exposure periods of 24 and 48 hours were 400 and 80 mg l(-1) respectively. The curvilinear velocities (VCL) and straight-line velocities (VSL) of the stage II nauplii ranged from 0.7-1.1 and 0.2-0.4 mm s(-1) respectively. Increased concentrations of dispersant:diesel mixtures caused a significant change in the curvilinear and straight-line velocities. Both oil dispersants, dispersant:diesel mixtures of 20 to 40 mg l(-1) caused significant increases in VCL, but no significant change in VSL. Dispersant:diesel mixtures of 100 mg l(-1) and higher resulted in a reduction in VSL for both dispersants. |
| Keyword | Oil Dispersant Phototaxis Swimming Behaviour Barnacle Larvae |
| Funding Organization | Brit Council, Cathay Pacific Airways, Environm & Conservat Fund, Epson Fdn, Hong Kong Elect Co Ltd, Intergovt Oceanog Commiss, Paris, Int Soc Mangrove Ecosyst, Tokyo, Natl Nat Sci Fdn China, UN, Environm Programme |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:A1997YK76300003 |
| Citation statistics | |
| Document Type | 会议论文 |
| Identifier | http://ir.ihb.ac.cn/handle/342005/11863 |
| Collection | 会议论文 |
| Recommended Citation GB/T 7714 | Wu, RSS,Lam, PKS,Zhou, BS. Effects of two oil dispersants on phototaxis and swimming behaviour of barnacle larvae[C],1997:9-16. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Effects of two oil d（244KB） | 开放获取 | -- | View Application Full Text | |||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment