FN Archimer Export Format PT J TI Temperature resistance of Hesiolyra bergi, a polychaetous annelid living on deep-sea vent smoker walls BT AF SHILLITO, Bruce JOLLIVET, Didier SARRADIN, Pierre-Marie RODIER, Philippe LALLIER, François DESBRUYERES, Daniel GAILL, Françoise AS 1:;2:;3:;4:;5:;6:;7:; FF 1:;2:;3:PDG-DRO-EP;4:PDG-DRO-EP;5:;6:PDG-DRO-EP;7:; C1 Univ Paris UPMC, Marine Biol Grp, CNRS,LBMCD, UMR 7622, F-75252 Paris 5, France. CNRS, UPR 9042, Roscoff Marine Stn, Ecophysiol Grp, F-29682 Roscoff, France. IFREMER, Ctr Brest, DRO EP, F-29280 Plouzane, France. C2 UNIV PARIS 06, FRANCE CNRS, FRANCE IFREMER, FRANCE SI BREST SE PDG-DRO-EP IN WOS Ifremer jusqu'en 2018 copubli-univ-france IF 1.903 TC 64 UR https://archimer.ifremer.fr/doc/2001/publication-811.pdf LA English DT Article CR HOPE 99 HOT-96 BO L'Atalante Le Nadir DE ;IPOCAMP;Adaptation to heat;Behaviour;Hydrothermal vents AB For the first time, in vivo heat-exposure experiments were conducted on the hydrothermal vent polychaete Hesiolyra bergi from the hottest part of the vent biotope. Using a pressurised incubator equipped with video-facilities, we found that H. bergi, which forages around and in the tubes of the thermophilic Alvinella sp., became hyperactive once temperature exceeded 35 degreesC and further lost co-ordination in the 41 to 46 degreesC interval, just before death occurred. Another exposure experiment at 39 degreesC for 3 to 4 h led to 80 % mortality (max) 9 h after heat shock, and 100 % thereafter. In view of the much higher temperatures recorded in this organism's habitat, these results suggest that tolerance to high temperatures (exceeding 40 degreesC) is not a pre-requisite for life amongst alvinellid tubes. Behavioural responses (escape from heat) may suffice. PY 2001 PD JUN SO Marine Ecology Progress Series SN 0171-8630 PU Inter-Research VL 216 UT 000170395500012 BP 141 EP 149 DI 10.3354/meps216141 ID 811 ER EF