Physiological response of 10 phytoplankton species exposed to macondo oil and the dispersant, Corexit

Journal of Phycology
Laura BrethertonAntonietta Quigg

Abstract

Culture experiments were conducted on ten phytoplankton species to examine their biological and physiological responses during exposure to oil and a combination of oil and dispersant. The species tested included a range of taxa typically found in the Gulf of Mexico such as cyanobacteria, chlorophytes, and diatoms. Cultures were exposed to Macondo surrogate oil using the water accommodated fraction (WAF), and dispersed oil using a chemically enhanced WAF (CEWAF) and diluted CEWAF, to replicate conditions following the Deepwater Horizon spill in the Gulf of Mexico. A range of responses were observed, that could broadly class the algae as either "robust" or "sensitive" to oil and/or dispersant exposure. Robust algae were identified as Synechococcus elongatus, Dunaliella tertiolecta, two pennate diatoms Phaeodactylum tricornutum and Navicula sp., and Skeletonema grethae CCMP775, and were largely unaffected by any of the treatments (no changes to growth rate or time spent in lag phase relative to controls). The rest of the phytoplankton, all centric diatoms, exhibited at least some combination of reduced growth rates or increased lag time in response to oil and/or dispersant exposure. Photophysiology did not have a strong treatment ...Continue Reading

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Citations

Jun 26, 2020·Environmental Science and Pollution Research International·Soledad Salinas-WhittakerGraciela Guerra-Rivas
Nov 24, 2019·Marine Pollution Bulletin·Gopal BeraAnthony H Knap
Feb 8, 2021·Marine Pollution Bulletin·Siratun Montaha S ShaikhM Suresh Kumar
Jul 19, 2021·Environmental Pollution·Deepak NanjappaZoe V Finkel
Jul 18, 2021·Bulletin of Environmental Contamination and Toxicology·Sébastien PutzeysDaniel Pech
Aug 20, 2021·Frontiers in Microbiology·Manoj KamalanathanAntonietta Quigg

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