Consulta: subjectFacets:"Adaptation to heat"
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Data/hora: 10/06/2024 09:19:36

Temperature resistance of Hesiolyra bergi, a polychaetous annelid living on deep-sea vent smoker walls
Provedor de dados: 5
Autores: Shillito, Bruce; Jollivet, Didier; Sarradin, Pierre-marie; Rodier, Philippe; Lallier, François; Desbruyeres, Daniel; Gaill, Françoise.
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...
Tipo: Text
Palavras-chave: IPOCAMP; Adaptation to heat; Behaviour; Hydrothermal vents.
Ano: 2001
URL: https://archimer.ifremer.fr/doc/2001/publication-811.pdf