trustees meeting 2013
TRANSCRIPT
Eric Wilcox Freeburg | [email protected] February 26, 2013
Climate change impacts on fishEric Wilcox Freeburg, Doctoral CandidateDepartment of Environmental, Earth and Ocean Sciences
NSF-CRI-OA-1220480PI: Dr. Robyn Hannigan
Eric Wilcox Freeburg | [email protected] February 26, 2013
The issue: ocean acidification
▸ CO2 increase in the atmosphere leads to lower ocean pH
▸ Low pH is caustic to many minerals
▸ Ocean acidification appears to impacting corals and shelled organisms, but what about soft bodied organisms like fish?
Hall-Spencer et al. 2008. Volcanic carbon dioxide vents show ecosystem effects of ocean acidification. Nature, 454(7200), 96-99
Eric Wilcox Freeburg | [email protected] February 26, 2013
Why is OA important to fish?
A. Whitfield, T.T., Riley, B.B., Chiang, M.-Y., and Phillips, B., 2002, Development of the zebrafish inner ear: Developmental Dynamics, v. 223, p. 427-458.
B. Fekete, D.M., 2003, Developmental biology. Rocks that roll zebrafish: Science, v. 302, p. 241-2.
Eric Wilcox Freeburg | [email protected] February 26, 2013
NASA papers
Anken et al. 1998
Gravitational force affectsotolith development and function
Eric Wilcox Freeburg | [email protected] February 26, 2013
Checkley et al. 2009. Elevated CO2 enhances otolith growth in young fish. Science, 324(5935), 1683.
Eric Wilcox Freeburg | [email protected] February 26, 2013
Ocean Acidification Apparatus
▸ 20 Individually controlled and replicated tanks▸ Precise control (within ±0.01 pH units)▸ Hobbyist base system, so inexpensive▸ Methodology paper in preparation
Eric Wilcox Freeburg | [email protected] February 26, 2013
Texture analysis
▸ Hypothesis – tissue interaction with bones▸ Titanium replacement bones – roughness
characteristics key to new tissue growth
▸ Is the otolith roughness changed under OA? Does that impact nerve-bone interactions?
Eric Wilcox Freeburg | [email protected] February 26, 2013
Thank you!
▸ National Science Foundation▸ Dr. Robyn Hannigan, EEOS, UMB▸ Dr. William Robinson, EEOS, UMB
▸ Dr. Andrew Rhyne, Roger Williams University▸ Dr. Michael Tlusty, New England Aquarium