Temperature resistance studies on the deep-sea vent shrimp Mirocaris fortunata

Type Article
Date 2006-03
Language English
Author(s) Shillito B1, Le Bris Nadine2, Hourdez S3, Ravaux J1, Cottin D1, Caprais Jean-Claude2, Jollivet D3, Gaill F1
Affiliation(s) 1 : Univ Paris 06, CNRS, UMR 7138 Systemat Adaptat & Evolut, F-75252 Paris 05, France.
2 : IFREMER, Breast Ctr, DROEP, F-29280 Plouzane, France.
3 : CNRS, Stn Marine Roscoff, UPR 9042, F-29682 Roscoff, France.
Source Journal of Experimental Marine Biology and Ecology (0022-0949) (Elsevier), 2006-03 , Vol. 209 , N. 5 , P. 945-955
DOI 10.1242/jeb.02102
WOS© Times Cited 44
Keyword(s) IPOCAMP TM, Crustacea, Mirocaris fortunata, Thermal stress, Hydrothermal vent
Abstract The shrimp Mirocaris fortunata is a hydrothermal vent species that is found at most vent-sites along the Mid-Atlantic Ridge. This endemic species is found across a hydrothermal gradient, with thermal conditions ranging from 2-9 degrees C in ambient seawater to fairly warm values of about 25 degrees C. We performed in vivo experiments on M. fortunata specimens originating from different sites and depths (850 m to 2300 m), both at atmospheric pressure and in pressurized aquaria, to characterise the upper thermal limits of this species. Atmospheric pressure results show that thermal physiology should be studied at each population's native pressure. At in situ pressure, shrimps from Menez Gwen (850 m depth) and Lucky Strike (1700 m depth) do not survive temperatures of 39 degrees C, and the 'loss of equilibrium' response suggests that their critical thermal maximum (Ct(max)), is about 36 +/- 1 degrees C for both sites. This value is similar to those found for another vent shrimp, Rimicaris exoculata, which is thought to be a more temperature-resistant organism, so temperature resistance does not appear to be a crucial factor for explaining differences in distribution of shrimp species in a given vent site. Finally, the data for both vent shrimps are also comparable to those of other non-vent tropical caridean species.
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Shillito B, Le Bris Nadine, Hourdez S, Ravaux J, Cottin D, Caprais Jean-Claude, Jollivet D, Gaill F (2006). Temperature resistance studies on the deep-sea vent shrimp Mirocaris fortunata. Journal of Experimental Marine Biology and Ecology, 209(5), 945-955. Publisher's official version : https://doi.org/10.1242/jeb.02102 , Open Access version : https://archimer.ifremer.fr/doc/00000/1240/