Metabolic responses of sand fiddler crabs, Uca pugilator, in northwest Florida to seasonal temperature change |
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Authors: | Ana G Jimenez Wayne A Bennett |
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Institution: | 1. Department of Biology and Marine Biology, University of North Carolina-Wilmington, Wilmington, NC 28403, USA;2. Department of Biology, University of West Florida, 11000 University Pkwy, Pensacola, FL 32514, USA |
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Abstract: | Metabolic responses of sand fiddler crab, Uca pugilator, populations in northwest Florida are greatly influenced by seasonal temperature fluctuations. Crabs acclimated at 20 °C and immediately transferred to either 14 or 26 °C produced an acute metabolic response with respective temperature quotient (Q10) values of 3.46 and 3.91. Crabs acclimated at 10 and 20 °C exhibited a Q10 of 2.62 indicating a partial compensation response. A brumation (reverse) response (Q10 value of 20.11) was observed for acclimated crabs between 5 and 10 °C. Brumation is advantageous during winter when food supplies are scarce and crabs must survive extensive periods of inactivity. |
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Keywords: | Brumation Q10 Precht response curves Capacity adaptation Crab metabolic rates |
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