Résistance thermique supérieure de Gammarus fasciatus, Say (Crustacea, Amphipoda) et son utilisation en situation de rejets thermiques
In: Canadian Journal of Zoology, Jg. 60 (1982-06-01), S. 1339-1346
Online
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Zugriff:
The upper thermal resistance limit (dose–time analysis of mortality at high temperatures) has been determined in the amphipod G. fasciatus on a time scale of up to 5 days. LTm's (median tolerance limit: 50% survival time) show a 1.12 mean multiplication factor for each degree of acclimation between 5 and 25 °C and a mean reduction factor of 2.06 for each degree of exposure between 25 and 38 °C. Toxicity curves relating LTm, acclimation, and exposure temperatures serve to establish short-term survival diagrams that can be used in various situations of thermal shock. Priority should be given to the ΔT (interval between exposure and acclimation temperatures) or its duration. Thus, a 10 °C ΔT seems to be tolerated during an indefinite period of time when the water temperature is 15 °C or less. Predicted survival times are only 2 days and 2 h, respectively, when temperatures reach 20 and 25 °C. The methods used in this study helped to establish some short-term protection criteria for this species. These methods are also applicable to the study of other species or groups of aquatic organisms.[Journal translation]
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Résistance thermique supérieure de Gammarus fasciatus, Say (Crustacea, Amphipoda) et son utilisation en situation de rejets thermiques
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Autor/in / Beteiligte Person: | Couture, R. ; Thibault, Y. |
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Zeitschrift: | Canadian Journal of Zoology, Jg. 60 (1982-06-01), S. 1339-1346 |
Veröffentlichung: | Canadian Science Publishing, 1982 |
Medientyp: | unknown |
ISSN: | 1480-3283 (print) ; 0008-4301 (print) |
DOI: | 10.1139/z82-181 |
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