Photo-induced toxicity in early life stage fiddler crab (Uca longisignalis) following exposure to Deepwater Horizon oil
| Autor: | Heather P. Forth, Matthew M. Alloy, Aaron P. Roberts, Brianne K. Soulen, Leigh M. Damare, Kristin N. Bridges, Thomas E. Curran, James A. Stoeckel, Claire Lay, Jeffrey M. Morris |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Biogeochemical cycle animal structures Brachyura Ultraviolet Rays Health Toxicology and Mutagenesis 010501 environmental sciences Management Monitoring Policy and Law Toxicology 01 natural sciences Fiddler crab Ecosystem engineer chemistry.chemical_compound Ecotoxicology Animals Petroleum Pollution 0105 earth and related environmental sciences Gulf of Mexico biology 010604 marine biology & hydrobiology Aquatic ecosystem food and beverages General Medicine biology.organism_classification Food web Fishery Petroleum chemistry Larva Toxicity Environmental science Water Pollutants Chemical |
| Zdroj: | Ecotoxicology (London, England). 27(4) |
| ISSN: | 1573-3017 |
| Popis: | The 2010 explosion of the Deepwater Horizon (DWH) oil rig led to the release of millions of barrels of oil in the Gulf of Mexico. Oil in aquatic ecosystems exerts toxicity through multiple mechanisms, including photo-induced toxicity following co-exposure with UV radiation. The timing and location of the spill coincided with both fiddler crab reproduction and peak yearly UV intensities, putting early life stage fiddler crabs at risk of injury due to photo-induced toxicity. The present study assessed sensitivity of fiddler crab larvae to photo-induced toxicity during co-exposure to a range of environmentally relevant dilutions of high-energy water accommodated fractions of DWH oil, and either10, 50, or 100% ambient sunlight, achieved with filters that allowed for variable UV penetration. Solar exposures (duration: 7-h per day) were conducted for two consecutive days, with a dark recovery period (duration: 17-h) in between. Survival was significantly decreased in treatments the presence of10% UV and relatively low concentrations of oil. Results of the present study indicate fiddler crab larvae are sensitive to photo-induced toxicity in the presence of DWH oil. These results are of concern, as fiddler crabs play an important role as ecosystem engineers, modulating sediment biogeochemical processes via burrowing action. Furthermore, they occupy an important place in the food web in the Gulf of Mexico. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink