In:
Journal of Experimental Biology, The Company of Biologists, Vol. 206, No. 14 ( 2003-07-15), p. 2345-2354
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 350°C 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 33-37°C 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 25°C. The R. exoculataoptimal thermal habitat may thus be restricted to values lower than previously expected ( & lt;25°C).
Type of Medium:
Online Resource
ISSN:
1477-9145
,
0022-0949
Language:
English
Publisher:
The Company of Biologists
Publication Date:
2003
detail.hit.zdb_id:
1482461-9
SSG:
12
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