Journal
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
Volume 92, Issue -, Pages 234-239Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.dsr2.2012.12.003
Keywords
Temperature adaptation; Physiology; Chemosynthetic environment; Palaemonetes; Mirocaris
Categories
Funding
- Total Foundation [Abyss2100]
- CNRS-INSU/IFRE-MER
- NERC
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The hydrothermal vent shrimp Mirocaris fortunate is commonly exposed to acute thermal gradients and rapid fluctuations in water temperature. The shallow-water shrimp Palaemonetes varians experiences less acute but similar magnitude fluctuations in its thermal regime. Acute respiratory response to temperature shock, and temperature preference was assessed for both species. Oxygen consumption rates were assessed across the natural temperature range reported for M. fortunata. Rates increased with temperature for both species. P. varians had a significantly higher rate of oxygen consumption than M. fortunate at all temperatures except 4 degrees C. The rate of increase in oxygen consumption with increasing temperature was also significantly greater for P. varians. M. fortunata selected a significantly higher temperature than P. varians. Mirocaris fortunata maintains its metabolism at a more stable rate, which is likely an adaptation to acute changes in temperatures occurring at hydrothermal vents. (C) 2012 Elsevier Ltd. All rights reserved.
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