The long-lived deep-sea bivalve Acesta excavata is sensitive to the dual stressors of sediment and warming
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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Original language | English |
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Article number | 116323 |
Journal / Publication | Marine Pollution Bulletin |
Volume | 202 |
Online published | 10 Apr 2024 |
Publication status | Published - May 2024 |
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Link to Scopus | https://www.scopus.com/record/display.uri?eid=2-s2.0-85189856472&origin=recordpage |
Permanent Link | https://scholars.cityu.edu.hk/en/publications/publication(0e350f0a-04c3-41ba-86ac-efcb46e083ed).html |
Abstract
Human influence in the deep-sea is increasing as mining and drilling operations expand, and waters warm because of climate change. Here, we investigate how the long-lived deep-sea bivalve, Acesta excavata responds to sediment pollution and/or acute elevated temperatures. A. excavata were exposed to suspended sediment, acute warming, and a combination of the two treatments for 40 days. We measured O2 consumption, NH4+ release, Total Organic Carbon (TOC), and lysosomal membrane stability (LMS). We found suspended sediment and warming interacted to decrease O:N ratios, while sediment as a single stressor increased the release of TOC and warming increased NH4+ release in A. excavata. Warming also increased levels of LMS. We found A. excavata used protein catabolism to meet elevated energetic demands indicating a low tolerance to stress. A. excavata has limited capacity for physiological responses to the stressors of warming and sediment which may lead to decreased fitness of A. excavata. © 2024 The Author(s).
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The long-lived deep-sea bivalve Acesta excavata is sensitive to the dual stressors of sediment and warming. / Scanes, Elliot; Kutti, Tina; Fang, James K.H. et al.
In: Marine Pollution Bulletin, Vol. 202, 116323, 05.2024.
In: Marine Pollution Bulletin, Vol. 202, 116323, 05.2024.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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