Researchers developed the first transcriptomic database for mahi-mahi embryos and larvae exposed to oil from the Deepwater Horizon incident. The team assembled over 60,000 transcripts, identified over 30,000 gene sequences, and observed 2,345 genes that differed significantly after exposure to weathered oil.
Researchers conducted laboratory experiments on mahi-mahi embryos to determine the effects of ultraviolet radiation (UV) and oil co-exposure during different times in their development. The team observed that UV affected the success of mahi-mahi hatch in all exposure scenarios compared to controls but was highest (a 1.6- to 6-fold increase) when co-exposure occurred late in embryonic development.
Polycyclic aromatic hydrocarbons (PAHs) can disrupt important signaling pathways that transcribe genes during fish’s early embryonic development, which could cause malformations.
Scientists from Louisiana State University, University of California-Davis, and Clemson University, studying Deepwater Horizon impacts on killifish from oiled Louisiana estuaries…