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Temperature and sulphide tolerance of hydrothermal vent fauna
Fisher, C.R. (1998). Temperature and sulphide tolerance of hydrothermal vent fauna. Cah. Biol. Mar. 39(3-4): 283-286. https://dx.doi.org/10.21411/CBM.A.74ED2F38
In: Cahiers de Biologie Marine. Station Biologique de Roscoff: Paris. ISSN 0007-9723; e-ISSN 2262-3094
Also appears in:
(1998). Proceedings of the First International Symposium on Deep-Sea Hydrothermal Vent Biology: Funchal, Madeira, Portugal 20-24 October 1997. Cahiers de Biologie Marine, 39(3-4). Station Biologique de Roscoff: Roscoff. 219-392 pp., more
Peer reviewed article  

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Keyword
    Marine/Coastal

Author  Top 
  • Fisher, C.R.

Abstract
    To survive in the hydrothermal vent environment, the fauna have adaptations which allow exposure to a range of temperatures, while maintaining a supply of oxygen to their tissues and avoiding the toxic effects of their environment. Simple exclusion of the dissolved toxins would seem to be untenable when one considers the fact that these animals are aerobic and must utilise respiratory surfaces for gas exchange. This is especially true for the chemoautotrophic symbiont-containing animals, because they have the added requirement of supplying reduced sulphur compounds, usually the toxic gas hydrogen sulphide, to their symbionts. Understanding how the vent fauna tolerate and thrive in this hostile environment has been the focus of a majority of the physiological investigations of these animals. In parallel with these studies, biologists have long recognised the importance of characterizing the microhabitats occupied by the vent fauna. However, we have also recognized the difficulty in doing so because not only are the microhabitats temporally variable, but some of the spatial gradients of temperature and dissolved gasses are arguably the greatest of any habitat on the planet. For example, temperature gradients of well over 100oC per cm are not uncommon in chimney environments, and can exceed 300oC per cm on flanges. A review of some thermal tolerance investigations of vent fauna provides an excellent overview of the variety of approaches available to deep-sea physiological ecologists interested in such questions.

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