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Establishing the thermal threshold of the tropical mussel Perna viridis in the face of global warming
Citation
Goh, B. P. L., & Lai, C. H. (2014). Establishing the thermal threshold of the tropical mussel Perna viridis in the face of global warming. Marine Pollution Bulletin, 85(2), 325-331. https://doi.org/10.1016/j.marpolbul.2013.10.041
Abstract
With increasing recognition that maximum oxygen demand is the unifying limit in tolerance, the first line of thermal sensitivity is, as a corollary, due to capacity limitations at a high level of organisational complexity before individual, molecular or membrane functions become disturbed. In this study the tropical mussel Perna viridis were subjected to temperature change of 0.4˚C per hour from ambient to 8~36˚C. By comparing thermal mortality against biochemical indices (hsp70, gluthathione), physiological indices (glycogen, FRAP, NRRT) and behavioural indices (clearance rate), a hierarchy of thermal tolerance was therein elucidated, ranging from systemic to cellular to molecular levels. Generally, while biochemical indices indicated a stress signal much earlier than the more integrated behavioural indices, failure of the latter (indicating a tolerance limit and transition to pejus state) occurred much earlier than the other indices tending towards thermal extremities at both ends of the thermal spectrum.
Date Issued
2014
DOI
10.1016/j.marpolbul.2013.10.041
Description
This is the final draft, after peer-review, of a manuscript published in Marine Pollution Bulletin. The published version is available online at http://dx.doi.org/10.1016/j.marpolbul.2013.10.041