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Combined Effects of Acute Temperature Change and Elevated pCO2 on the Metabolic Rates and Hypoxia Tolerances of Clearnose Skate (Rostaraja eglanteria), Summer Flounder (Paralichthys dentatus), and Thorny Skate (Amblyraja radiata)

1
Virginia Institute of Marine Science, College of William and Mary, Gloucester Point, VA 23062, USA
2
Marine Sciences Department, University of New England, Biddeford, ME 04005, USA
3
Department of Biology, Marine Biology, and Environmental Science, Roger Williams University, Bristol, RI 02809, USA
4
School of Mathematical & Natural Sciences, Arizona State University, Glendale, AZ 85306, USA
5
Department of Biological Sciences, Indiana University South Bend, South Bend, IN 46615, USA
*
Author to whom correspondence should be addressed.
Biology 2019, 8(3), 56; https://doi.org/10.3390/biology8030056
Received: 31 May 2019 / Revised: 14 July 2019 / Accepted: 18 July 2019 / Published: 26 July 2019
(This article belongs to the Special Issue Fish Metabolic Physiology in Response to Stress)
Understanding how rising temperatures, ocean acidification, and hypoxia affect the performance of coastal fishes is essential to predicting species-specific responses to climate change. Although a population’s habitat influences physiological performance, little work has explicitly examined the multi-stressor responses of species from habitats differing in natural variability. Here, clearnose skate (Rostaraja eglanteria) and summer flounder (Paralichthys dentatus) from mid-Atlantic estuaries, and thorny skate (Amblyraja radiata) from the Gulf of Maine, were acutely exposed to current and projected temperatures (20, 24, or 28 °C; 22 or 30 °C; and 9, 13, or 15 °C, respectively) and acidification conditions (pH 7.8 or 7.4). We tested metabolic rates and hypoxia tolerance using intermittent-flow respirometry. All three species exhibited increases in standard metabolic rate under an 8 °C temperature increase (Q10 of 1.71, 1.07, and 2.56, respectively), although this was most pronounced in the thorny skate. At the lowest test temperature and under the low pH treatment, all three species exhibited significant increases in standard metabolic rate (44–105%; p < 0.05) and decreases in hypoxia tolerance (60–84% increases in critical oxygen pressure; p < 0.05). This study demonstrates the interactive effects of increasing temperature and changing ocean carbonate chemistry are species-specific, the implications of which should be considered within the context of habitat. View Full-Text
Keywords: respirometry; climate change; aerobic scope; multi-stressor; metabolism respirometry; climate change; aerobic scope; multi-stressor; metabolism
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MDPI and ACS Style

Schwieterman, G.D.; Crear, D.P.; Anderson, B.N.; Lavoie, D.R.; Sulikowski, J.A.; Bushnell, P.G.; Brill, R.W. Combined Effects of Acute Temperature Change and Elevated pCO2 on the Metabolic Rates and Hypoxia Tolerances of Clearnose Skate (Rostaraja eglanteria), Summer Flounder (Paralichthys dentatus), and Thorny Skate (Amblyraja radiata). Biology 2019, 8, 56. https://doi.org/10.3390/biology8030056

AMA Style

Schwieterman GD, Crear DP, Anderson BN, Lavoie DR, Sulikowski JA, Bushnell PG, Brill RW. Combined Effects of Acute Temperature Change and Elevated pCO2 on the Metabolic Rates and Hypoxia Tolerances of Clearnose Skate (Rostaraja eglanteria), Summer Flounder (Paralichthys dentatus), and Thorny Skate (Amblyraja radiata). Biology. 2019; 8(3):56. https://doi.org/10.3390/biology8030056

Chicago/Turabian Style

Schwieterman, Gail D., Daniel P. Crear, Brooke N. Anderson, Danielle R. Lavoie, James A. Sulikowski, Peter G. Bushnell, and Richard W. Brill 2019. "Combined Effects of Acute Temperature Change and Elevated pCO2 on the Metabolic Rates and Hypoxia Tolerances of Clearnose Skate (Rostaraja eglanteria), Summer Flounder (Paralichthys dentatus), and Thorny Skate (Amblyraja radiata)" Biology 8, no. 3: 56. https://doi.org/10.3390/biology8030056

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