• 4 minutes Trump will meet with executives in the energy industry to discuss the impact of COVID-19
  • 8 minutes Charts of COVID-19 Fatality Rate by Age and Sex
  • 11 minutes Why Trump Is Right to Re-Open the Economy
  • 13 minutes Its going to be an oil bloodbath
  • 16 mins While China was covering up Covid-19 it went on an international buying spree for ventilators and masks. From Jan 7th until the end of February China bought 2.2 Billion masks !
  • 4 mins Ten days ago Trump sent New York Hydroxychloroquine. Being administered to infected. Covid deaths dropped last few days. Fewer on ventilators. Hydroxychloroquine "Cause and Effect" ?
  • 5 hours US Shale Resilience: Oil Industry Experts Say Shale Will Rise Again
  • 5 hours China Takes Axe To Alternative Energy Funding, Slashing Subsidies For Solar And Wind
  • 3 hours Real Death Toll In CCP Virus May Be 12X Official Toll
  • 3 hours Marine based energy generation
  • 7 hours Today 127 new cases in US, 99 in China, 778 in Italy
  • 2 hours What If ‘We’d Adopted A More Conventional Response To This Epidemic?’
  • 3 hours How to Create a Pandemic
  • 4 hours Apple to Bypass Internet and Beam Directly to Phones
  • 10 hours Which producers will shut in first?
  • 19 hours TRUMP pushing Hydroxychloroquine + Zpak therapy forward despite FDA conservative approach. As he reasons, "What have we got to lose ?"
Alt Text

Chinese Scientists Find New Way To Clean Up Oil Spills

Chinese scientists have invented a…

Alt Text

BP To Take Final Hit On 2010 Disaster

British Petroleum is set to…

Alt Text

The Oil Eating Bacteria That Can Clean Up Crude Spills

Scientists have discovered a rod-shaped…

Futurity

Futurity

Futurity covers research news from the top universities in the US, UK, Canada and Australia

More Info

Premium Content

Fish Embryos Reveal that Gulf of Mexico Oil Spill Still Lingers

After the Deepwater Horizon oil spill, crude oil toxicity continued to sicken a sentinel Gulf Coast fish species for at least a year or more, new research shows.

The researchers found that Gulf of Mexico killifish embryos exposed to sediments from oiled locations in 2010 and 2011 show developmental abnormalities, including heart defects, delayed hatching, and reduced hatching success.

Killifish
Killifish exposed to sediments from oiled sites affected by the Deepwater Horizon spill continue to show health defects, three years after the spill. (Credit: Andrew Whitehead/UC Davis)

The killifish is an environmental indicator species, or a “canary in the coal mine,” used to predict broader exposures and health risks.

Related article: Exxon Oil Spill in Arkansas, Keystone Spoiler?

The findings, posted online before publication in Environmental Science and Technology, are part of an ongoing collaborative effort to track the impacts of the Deepwater Horizon oil spill on Gulf killifish populations in areas of Louisiana that received heavy amounts of oil.

Other species that share similar habitats with the Gulf killifish, such as redfish, speckled trout, flounder, blue crabs, shrimp, and oysters—may be at risk of similar effects.

“These effects are characteristic of crude oil toxicity,” says co-author Andrew Whitehead, an assistant professor of environmental toxicology at University of California, Davis. “It’s important that we observe it in the context of the Deepwater Horizon spill because it tells us it is far too early to say the effects of the oil spill are known and inconsequential. By definition, effects on reproduction and development—effects that could impact populations—can take time to emerge.”

Killifish are abundant in the coastal marsh habitats along the Gulf Coast. Though not fished commercially, they are an important forage fish and a key member of the ecological community. Because they don’t migrate, measurements of their health are indicative of their local environment, making them an ideal subject for study.

The researchers collected Gulf killifish from an oiled site at Isle Grande Terre, Louisiana, and monitored them for measures of exposure to crude oil. They also exposed killifish embryos in the lab to sediment collected from oiled sites at Isle Grande Terre within Barataria Bay in Louisiana.

“Our findings indicate that the developmental success of these fish in the field may be compromised,” says lead author Benjamin Dubansky, who recently earned his Ph.D. from Louisiana State University.

Related article: PERU: Environmental Authorities Get Serious

Whitehead says the report’s findings may predict longer-term impacts to killifish populations. However, oil from the Deepwater Horizon spill showed up in patches, rather than coating the coastline. That means some killifish could have been hit hard by the spill while others were less impacted.

Whitehead says it is possible that some of the healthier, less impacted killifish could buffer the effects of the spill for the population as a whole.

The National Science Foundation, the Gulf of Mexico Research Initiative, and the National Institutes of Health funded the study.

The researchers, including additional scientists from Louisiana State University and Clemson University, have tracked the impact of the oil on killifish since the Deepwater Horizon spill occurred in April 2010.

By. Kat Kerlin


Download The Free Oilprice App Today

Back to homepage






Leave a comment

Leave a comment




Oilprice - The No. 1 Source for Oil & Energy News