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Cracking the Oyster’s Code

By Guest PostSeptember 23, 2012Natureair exposure, analysis, atlantic, bioengineering project, cell, death, delaware, DNA, dynamic environment, evolution, factor, genetic code, genome, genome project, gulf coast, heat shock, immune response, oyster, pacific oyster, parasites, pathogen, patrick m gaffney, stress, survival, temperature fluctuation, toxic chemical, toxic metal, university

International team of scientists finds adaptations to stress in oyster genome

When it comes to stress, oysters know how to deal. The tough-shelled mollusks can survive temperature fluctuations, toxic metals and exposure to air, and a new study of their genetic makeup is helping to explain how.

An international team of scientists, including the University of Delaware’s Patrick M. Gaffney, professor of marine biosciences, sequenced the genome of the Pacific oyster, Crassostrea gigas, in a Nature paper published on Sept. 19. (more…)

Ocean Acidification Linked With Larval Oyster Failure in Hatcheries

By Guest PostApril 13, 2012Environmentaslo, burke hales, carbon dioxide, chris langdon, co2 level, corrosive, david garrison, fluctuation, george waldbusser, larval mortality, national science foundation, netarts bay, noaa, North America, ocean acidification, ocean water, oregon, oregon state university, osu, oyster, oyster hatchery, oyster production, pacific northwest, pathogenic bacteria, richard feely, seed production, whiskey creek shellfish hatchery

*Increase in ocean acidification led to collapse of oyster seed production at Oregon hatchery*

Marine researchers have definitively linked the collapse of oyster seed production at a commercial oyster hatchery in Oregon to an increase in ocean acidification.

Larval growth at the hatchery declined to a level considered by the owners to be “non-economically viable.”

A study by the scientists found that increased seawater carbon dioxide (CO₂) levels, resulting in more corrosive ocean water, inhibited the larval oysters from developing their shells and growing at a pace that would make commercial production cost-effective. (more…)

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Cracking the Oyster’s Code

Ocean Acidification Linked With Larval Oyster Failure in Hatcheries