Abstract：
:Some subtidal habitats may experience extremely large diel temperature fluctuations. To explore the potential of subtidal animals to regulate their metabolic processes, we investigated how the oxygen consumption rate (MO2) of the sea urchin Mesocentrotus nudus changes in response to extreme temperature fluctuations by mimicking temperature variations recorded at Dokdo Island, Republic of Korea. We compared the MO2 of urchins before and after a temperature fluctuation. MO2 was positively correlated with temperature. There was no change in the mean MO2 values even after exposure to fluctuating temperature. There was no significant difference in mean MO2 between large and small temperature fluctuations. These results indicate that the metabolic activity of M. nudus might be well-adapted to extreme temperature fluctuations. However, given that the temperature coefficient (Q10) values decreased with increasing temperature and Q10 values during the temperature decrease was higher than those during temperature increase, temperature rise may still act as a stressor for these animals.
journal_name
Mar Environ Resjournal_title
Marine environmental researchauthors
Sin E,Min WG,Kim YB,Kim TWdoi
10.1016/j.marenvres.2019.01.003subject
Has Abstractpub_date
2019-02-01 00:00:00pages
178-185eissn
0141-1136issn
1879-0291pii
S0141-1136(18)30704-9journal_volume
144pub_type
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