Toxicity study of the oil dispersant Corexit 9527 on Macrobrachium rosenbergii (de Man) egg hatchability by using a flow-through bioassay technique
The effect of the oil-spill dispersant Corexit 9527 on egg-hatching rate of Macrobrachium rosenbergii (de Man) was studied by using an innovated flow-through bioassay technique. This bioassay method relies on the fact that M. rosenbergii fertilized eggs when detached from the mother prawn were able...
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| Format: | Article |
| Language: | English |
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Elsevier
1995
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| Online Access: | http://psasir.upm.edu.my/id/eprint/113041/ http://psasir.upm.edu.my/id/eprint/113041/1/113041.pdf |
| _version_ | 1848866109131849728 |
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| author | Law, A.T. |
| author_facet | Law, A.T. |
| author_sort | Law, A.T. |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The effect of the oil-spill dispersant Corexit 9527 on egg-hatching rate of Macrobrachium rosenbergii (de Man) was studied by using an innovated flow-through bioassay technique. This bioassay method relies on the fact that M. rosenbergii fertilized eggs when detached from the mother prawn were able to hatch artificially. The flow-through system generated a stable and good water quality environment for hatching the eggs successfully. The Corexit 9527 had a pronounced effect on hatching rate of the M. rosenbergii eggs. In the control, the hatching rate of the eggs was 95·55% ± 1·74%. However, it was reduced drastically with increasing concentrations of Corexit 9527. A 100% inhibition of egg hatchability was found when the level of Corexit 9527 was higher than 250 mg litre-1. The EC50 and the EC95 values estimated by the probit method were 80·4 ± 5·5 mg litre-1 and 193·5 ± 39·9 mg litre-1 respectively (P = 0·05). The recommended safety level of Corexit 9527 for M. rosenbergii in Malaysian estuarine waters is below 40 mg litre-1. |
| first_indexed | 2025-11-15T14:15:22Z |
| format | Article |
| id | upm-113041 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T14:15:22Z |
| publishDate | 1995 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-1130412025-01-22T02:06:49Z http://psasir.upm.edu.my/id/eprint/113041/ Toxicity study of the oil dispersant Corexit 9527 on Macrobrachium rosenbergii (de Man) egg hatchability by using a flow-through bioassay technique Law, A.T. The effect of the oil-spill dispersant Corexit 9527 on egg-hatching rate of Macrobrachium rosenbergii (de Man) was studied by using an innovated flow-through bioassay technique. This bioassay method relies on the fact that M. rosenbergii fertilized eggs when detached from the mother prawn were able to hatch artificially. The flow-through system generated a stable and good water quality environment for hatching the eggs successfully. The Corexit 9527 had a pronounced effect on hatching rate of the M. rosenbergii eggs. In the control, the hatching rate of the eggs was 95·55% ± 1·74%. However, it was reduced drastically with increasing concentrations of Corexit 9527. A 100% inhibition of egg hatchability was found when the level of Corexit 9527 was higher than 250 mg litre-1. The EC50 and the EC95 values estimated by the probit method were 80·4 ± 5·5 mg litre-1 and 193·5 ± 39·9 mg litre-1 respectively (P = 0·05). The recommended safety level of Corexit 9527 for M. rosenbergii in Malaysian estuarine waters is below 40 mg litre-1. Elsevier 1995 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/113041/1/113041.pdf Law, A.T. (1995) Toxicity study of the oil dispersant Corexit 9527 on Macrobrachium rosenbergii (de Man) egg hatchability by using a flow-through bioassay technique. Environmental Pollution, 88 (3). pp. 341-343. ISSN 0269-7491; eISSN: 1873-6424 https://linkinghub.elsevier.com/retrieve/pii/0269749195934489 10.1016/0269-7491(95)93448-9 |
| spellingShingle | Law, A.T. Toxicity study of the oil dispersant Corexit 9527 on Macrobrachium rosenbergii (de Man) egg hatchability by using a flow-through bioassay technique |
| title | Toxicity study of the oil dispersant Corexit 9527 on Macrobrachium rosenbergii (de Man) egg hatchability by using a flow-through bioassay technique |
| title_full | Toxicity study of the oil dispersant Corexit 9527 on Macrobrachium rosenbergii (de Man) egg hatchability by using a flow-through bioassay technique |
| title_fullStr | Toxicity study of the oil dispersant Corexit 9527 on Macrobrachium rosenbergii (de Man) egg hatchability by using a flow-through bioassay technique |
| title_full_unstemmed | Toxicity study of the oil dispersant Corexit 9527 on Macrobrachium rosenbergii (de Man) egg hatchability by using a flow-through bioassay technique |
| title_short | Toxicity study of the oil dispersant Corexit 9527 on Macrobrachium rosenbergii (de Man) egg hatchability by using a flow-through bioassay technique |
| title_sort | toxicity study of the oil dispersant corexit 9527 on macrobrachium rosenbergii (de man) egg hatchability by using a flow-through bioassay technique |
| url | http://psasir.upm.edu.my/id/eprint/113041/ http://psasir.upm.edu.my/id/eprint/113041/ http://psasir.upm.edu.my/id/eprint/113041/ http://psasir.upm.edu.my/id/eprint/113041/1/113041.pdf |