Heat-shock response and temperature resistance in the deep-sea vent shrimp Rimicaris exoculata
| Type | Article | ||||||||
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| Date | 2003-07 | ||||||||
| Language | English | ||||||||
| Author(s) | Ravaux Juliette, Gaill Françoise, Le Bris Nadine, Sarradin Pierre-Marie , Jollivet Didier, Shillito Bruce |
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| Affiliation(s) | Univ Paris 06, CNRS, UMR Systemat Adaptat & Evolut 7138, F-75252 Paris 05, France. Inst Francais Rech Exploitat Mer, Ctr Brest, DROEP, F-29280 Plouzane, France. CNRS, UPR 9042, Stn Marine Roscoff, Equipe Evolut & Genet Populat Marines, F-29682 Roscoff, France. |
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| Source | Journal of Experimental Biology (0022-0949) (Company of Biologists), 2003-07 , Vol. 206 , N. 14 , P. 2345-2354 | ||||||||
| DOI | 10.1242/jeb.00419 | ||||||||
| WOS© Times Cited | 81 | ||||||||
| Keyword(s) | Heat shock, Shrimp, Rimicaris exoculata, Chaperone, IPOCAMP, Caridae, Crustacea, Thermal stress, Hydrothermal vent | ||||||||
| Abstract | The shrimp Rimicaris exoculata swarms around hydrothermal black smoker chimneys at most vent sites along the Mid-Atlantic Ridge. This species maintains close proximity to the hydrothermal fluid, where temperatures can reach 350degreesC and steep thermal and chemical gradients are expected. We performed in vivo experiments in pressurized aquaria to determine the upper thermal limit [critical thermal maximum (CTmax)] of R. exoculata and to investigate some characteristics of the shrimp stress response to heat exposure. These experiments showed that the shrimp does not tolerate sustained exposure to temperatures in the 33-37degreesC range (CTmax). A heat-inducible stress protein belonging to the hsp70 family was identified in R. exoculata, and its synthesis threshold induction temperature is below 25degreesC. The R. exoculata optimal thermal habitat may thus be restricted to values lower than previously expected (<25&DEG;C). | ||||||||
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