Copper toxicity does not affect low tide emersion tolerance of Mytilus galloprovincialis.

Autor: Lowes HM; Department of Biological Sciences, University of Alberta, Edmonton T6G 2R3, AB, Canada., Eliason EJ; Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, Santa Barbara 93106, CA, USA., Snihur KN; Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton T6G 2R3, AB, Canada., Alessi DS; Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton T6G 2R3, AB, Canada., Blewett TA; Department of Biological Sciences, University of Alberta, Edmonton T6G 2R3, AB, Canada. Electronic address: tamzin@ualberta.ca.
Jazyk: angličtina
Zdroj: Marine pollution bulletin [Mar Pollut Bull] 2023 Apr; Vol. 189, pp. 114750. Date of Electronic Publication: 2023 Feb 27.
DOI: 10.1016/j.marpolbul.2023.114750
Abstrakt: Intertidal mussels are well adapted to withstand emersion from water during low tide, but they may be intermittently exposed to waterborne toxicants such as copper, which targets physiological processes including metabolism, ammonia excretion, and osmoregulation. To determine if copper exposure damages intertidal organisms' ability to tolerate tidal emersion, Mediterranean mussels (Mytilus galloprovincialis) were exposed to copper for 96 h followed by 6 h of emersion. Oxygen uptake increased after copper exposure which suggests that copper accumulation caused moderate stress in the mussels, but ammonia excretion and anaerobic metabolism were unaffected by mixed copper and emersion exposures. Shell composition analyses indicate that cycles of copper exposure and tidal emersion may affect bivalve shell growth, but copper deposition into shells may decrease the metal's overall toxicity. Results suggest that copper does not damage M. galloprovincialis's tolerance to tidal emersion, and insight is provided into the mussel's ability to overcome mixed stressor exposures.
Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Tamzin Blewett reports financial support was provided by Natural Sciences and Engineering Research Council of Canada.
(Copyright © 2023 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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