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Recent thermal history influences thermal tolerance in freshwater mussel species (Bivalvia: Unionoida)

Freshwater Science

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DOI: 10.1899/11-025.1

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Abstract

Understanding species’ temperature tolerances in the context of concurrent environmental stressors is critical because thermal regimes of freshwater ecosystems are changing. We evaluated the critical thermal maximum (CTM) of 3 freshwater mussel species (Alasmidonta varicosa, Elliptio complanata, and Strophitus undulatus) acclimated to 2 temperatures (15 and 25°C) and exposed to 2 aeration treatments (aerated vs unaerated) during CTM testing. Responses varied by species, but mussels acclimated to 25°C generally had a higher CTM than mussels acclimated to 15°C. For E. complanata, the effects of acclimation temperature and aeration were interactive, such that CTM was highest at 15°C but only under aerated conditions. Our results indicate that recent thermal history affects thermal tolerance, combinations of environmental stressors may influence thermal tolerance, and such responses vary among species.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Recent thermal history influences thermal tolerance in freshwater mussel species (Bivalvia: Unionoida)
Series title:
Freshwater Science
DOI:
10.1899/11-025.1
Volume
31
Issue:
1
Year Published:
2012
Language:
English
Publisher:
The Society for Freshwater Science
Contributing office(s):
Leetown Science Center
Description:
10 p.
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Freshwater Science
First page:
83
Last page:
92
Number of Pages:
10
Additional Online Files(Y/N):
N