Plasticity in Standard and Maximum Aerobic Metabolic Rates in Two Populations of an Estuarine Dependent Teleost, Spotted Seatrout (<i>Cynoscion nebulosus</i>)
We studied the effects of metabolic cold adaptation (MCA) in two populations of a eurythermal species, spotted seatrout (<i>Cynoscion nebulosus</i>) along the U.S. East Coast. Fish were captured from their natural environment and acclimated at control temperatures 15 °C or 20 &a...
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MDPI AG
2019-06-01
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| Online Access: | https://www.mdpi.com/2079-7737/8/2/46 |
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| author | Jingwei Song Richard W. Brill Jan R. McDowell |
| author_facet | Jingwei Song Richard W. Brill Jan R. McDowell |
| author_sort | Jingwei Song |
| collection | DOAJ |
| description | We studied the effects of metabolic cold adaptation (MCA) in two populations of a eurythermal species, spotted seatrout (<i>Cynoscion nebulosus</i>) along the U.S. East Coast. Fish were captured from their natural environment and acclimated at control temperatures 15 °C or 20 °C. Their oxygen consumption rates, a proxy for metabolic rates, were measured using intermittent flow respirometry during acute temperature decrease or increase (2.5 °C per hour). Mass-specific standard metabolic rates (SMR) were higher in fish from the northern population across an ecologically relevant temperature gradient (5 °C to 30 °C). SMR were up to 37% higher in the northern population at 25 °C and maximum metabolic rates (MMR) were up to 20% higher at 20 °C. We found evidence of active metabolic compensation in the southern population from 5 °C to 15 °C (Q<sub>10</sub> < 2), but not in the northern population. Taken together, our results indicate differences in metabolic plasticity between the northern and southern populations of spotted seatrout and provide a mechanistic basis for predicting population-specific responses to climate change. |
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| language | English |
| last_indexed | 2024-03-12T11:16:32Z |
| publishDate | 2019-06-01 |
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| spelling | doaj.art-48b5b50b3e0c4ecfbc2a2914628f8c7c2023-09-02T01:54:48ZengMDPI AGBiology2079-77372019-06-01824610.3390/biology8020046biology8020046Plasticity in Standard and Maximum Aerobic Metabolic Rates in Two Populations of an Estuarine Dependent Teleost, Spotted Seatrout (<i>Cynoscion nebulosus</i>)Jingwei Song0Richard W. Brill1Jan R. McDowell2Virginia Institute of Marine Science, William & Mary, P.O. Box 1346, Gloucester Point, VA 23062, USAVirginia Institute of Marine Science, William & Mary, P.O. Box 1346, Gloucester Point, VA 23062, USAVirginia Institute of Marine Science, William & Mary, P.O. Box 1346, Gloucester Point, VA 23062, USAWe studied the effects of metabolic cold adaptation (MCA) in two populations of a eurythermal species, spotted seatrout (<i>Cynoscion nebulosus</i>) along the U.S. East Coast. Fish were captured from their natural environment and acclimated at control temperatures 15 °C or 20 °C. Their oxygen consumption rates, a proxy for metabolic rates, were measured using intermittent flow respirometry during acute temperature decrease or increase (2.5 °C per hour). Mass-specific standard metabolic rates (SMR) were higher in fish from the northern population across an ecologically relevant temperature gradient (5 °C to 30 °C). SMR were up to 37% higher in the northern population at 25 °C and maximum metabolic rates (MMR) were up to 20% higher at 20 °C. We found evidence of active metabolic compensation in the southern population from 5 °C to 15 °C (Q<sub>10</sub> < 2), but not in the northern population. Taken together, our results indicate differences in metabolic plasticity between the northern and southern populations of spotted seatrout and provide a mechanistic basis for predicting population-specific responses to climate change.https://www.mdpi.com/2079-7737/8/2/46metabolic ratesaerobic scopeestuarine fishplasticity |
| spellingShingle | Jingwei Song Richard W. Brill Jan R. McDowell Plasticity in Standard and Maximum Aerobic Metabolic Rates in Two Populations of an Estuarine Dependent Teleost, Spotted Seatrout (<i>Cynoscion nebulosus</i>) Biology metabolic rates aerobic scope estuarine fish plasticity |
| title | Plasticity in Standard and Maximum Aerobic Metabolic Rates in Two Populations of an Estuarine Dependent Teleost, Spotted Seatrout (<i>Cynoscion nebulosus</i>) |
| title_full | Plasticity in Standard and Maximum Aerobic Metabolic Rates in Two Populations of an Estuarine Dependent Teleost, Spotted Seatrout (<i>Cynoscion nebulosus</i>) |
| title_fullStr | Plasticity in Standard and Maximum Aerobic Metabolic Rates in Two Populations of an Estuarine Dependent Teleost, Spotted Seatrout (<i>Cynoscion nebulosus</i>) |
| title_full_unstemmed | Plasticity in Standard and Maximum Aerobic Metabolic Rates in Two Populations of an Estuarine Dependent Teleost, Spotted Seatrout (<i>Cynoscion nebulosus</i>) |
| title_short | Plasticity in Standard and Maximum Aerobic Metabolic Rates in Two Populations of an Estuarine Dependent Teleost, Spotted Seatrout (<i>Cynoscion nebulosus</i>) |
| title_sort | plasticity in standard and maximum aerobic metabolic rates in two populations of an estuarine dependent teleost spotted seatrout i cynoscion nebulosus i |
| topic | metabolic rates aerobic scope estuarine fish plasticity |
| url | https://www.mdpi.com/2079-7737/8/2/46 |
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