Data/hora: 12/06/2024 02:40:13

Provedor de dados: | 5
País: | France
Título: | Temperature resistance of Hesiolyra bergi, a polychaetous annelid living on deep-sea vent smoker walls
Autores: | Shillito, Bruce; Jollivet, Didier; Sarradin, Pierre-marie; Rodier, Philippe; Lallier, François; Desbruyeres, Daniel; Gaill, Françoise.
Data: | 2001-07
Ano: | 2001
Palavras-chave: | IPOCAMP; Adaptation to heat; Behaviour; Hydrothermal vents.
Resumo: | 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.
Tipo: | Text
Idioma: | Inglês

Identificador:

https://archimer.ifremer.fr/doc/2001/publication-811.pdf

DOI:10.3354/meps216141

https://archimer.ifremer.fr/doc/00000/811/

Editor: | Inter-Research
Formato: | application/pdf
Fonte: | Marine Ecology Progress Series (0171-8630) (Inter-Research), 2001-07 , Vol. 216 , P. 141-149

Fonte:

2001 Inter-Research

info:eu-repo/semantics/openAccess

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