Thermal biology of the deep-sea vent annelied Paralvinella grasslei: in vivo studies
|Author(s)||Cottin D1, 2, Ravaux J1, 2, Leger N1, 2, Halary S1, 2, Toullec J3, 4, Sarradin Pierre-Marie5, Gaill F1, 2, Shillito B1, 2|
|Affiliation(s)||1 : Univ Paris 06, UPMC, UMR 7138, Systemat Adaptat & Evolut, F-75005 Paris, France.
2 : CNRS, UMR 7138, Systemat Adaptat & Evolut, F-75005 Paris, France.
3 : Univ Paris 06, UPMC, FRE 2852 Prot Biochim Struct & Fonctionnelle, F-75005 Paris, France.
4 : CNRS, FRE 2852 Prot Biochim Struct & Fonctionnelle, F-75005 Paris, France.
5 : IFREMER, Ctr Brest, DEEP, Lab Environm Profond, F-29280 Plouzane, France.
|Source||Journal of Experimental Marine Biology and Ecology (0022-0949) (Elsevier), 2008-07 , Vol. 211 , N. 14 , P. 2196-2204|
|WOS© Times Cited||17|
|Keyword(s)||IPOCAMP, Annelids, Heat stress, Stress response, Heat shock proteins, Hydrothermal vents|
|Abstract||The annelid Paralvinella grasslei is a deep-sea vent endemic species that colonizes the wall of active chimneys. We report here the first data on its thermal biology based on in vivo experiments in pressurized aquaria. Our results demonstrate that P. grasslei survives a 30 min exposure at 30 degrees C, and suggest that the upper thermal limit of this species is slightly above this temperature. The first signs of stress were noticed at 30 C, such as a significant increase in the animal's activity and the expression of HSP70 stress proteins. A preliminary investigation of the kinetics of stress protein expression surprisingly showed high levels of HSP70 proteins as late as 3.5 h after the heat shock. Finally, we provide here the first sequences for vent annelid hsp70 ( P. grasslei, Hesiolyra bergi and Alvinella pompejana). These constitute valuable tools for future studies on the thermal biology of these annelids.|