| one publication added to basket [107946] | Toxicity of third generation dispersants and dispersed Egyptian crude oil on Red Sea coral larvae
In: Marine Pollution Bulletin. Macmillan: London. ISSN 0025-326X; e-ISSN 1879-3363, more
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| Keywords |
Accidents > Oil spills
Agents > Dispersants
Animal products > Coral
Behaviour > Settling behaviour
Biological settlement > Larval settlement
Developmental stages > Larvae
Developmental stages > Larvae > Invertebrate larvae
Mineral resources > Mineral deposits > Subsurface deposits > Fuels > Fossil fuels > Petroleum > Crude oil
Oil removal
Pollution > Oil pollution
Pollution > Water pollution > Marine pollution
Pollution effects
Population functions > Mortality
Properties > Biological properties > Toxicity
Reefs > Biogenic deposits > Coral reefs
Restoration
Tests > Bioassays
Tests > Toxicity tests
Water treatment
Water treatment > Water pollution treatment
Heteroxenia fuscescens (Ehrenberg, 1834) [WoRMS]; Stylophora pistillata (Esper, 1792) [WoRMS]
Marine/Coastal |
| Authors | | Top |
- Epstein, N.
- Bak, R.P.M.
- Rinkevich, B.
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| Abstract |
Harmful effects of five third-generation oil dispersants (Inipol IP-90, Petrotech PTI-25, Bioreico R-93, Biosolve and Emulgal C-100) on planula larvae of the Red Sea stony coral Stylophora pistillata and the soft coral Heteroxenia fuscescense were evaluated in short-term (2-96 h) bioassays. Larvae were exposed to Egyptian oil water soluble fractions (WSFs), dispersed oil water accommodated fractions (WAFs) and dispersants dissolved in seawater, in different concentrations. Mortality, settlement rates and the appearance of morphological and behavioural deformations were measured. While oil WSF treatments resulted in reductions in planulae settlement only, treatments by all dispersants tested revealed a further decrease in settlement rates and additional high toxicity. Dispersed oil exposures resulted in a dramatic increase in toxicity to both coral larvae species. Furthermore, dispersants and WAFs treatments caused larval morphology deformations, loss of normal swimming behaviour and rapid tissue degeneration. Out of the five tested dispersion agents, the chemical Petrotech PTI-25 displayed the least toxicity to coral larvae. We suggest avoidance of the use of chemical dispersion in cases of oil spills near or within coral reef habitats. |
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