期刊
MARINE ENVIRONMENTAL RESEARCH
卷 129, 期 -, 页码 386-395出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.marenvres.2017.06.015
关键词
Thermal tolerance; Chronic and acute heat stress; Hsp70 expression mode; Behaviour; Histology; Paralichthys olivaceus
资金
- Modern Agro-industry Technology Research System [nycytx-50]
- Scientific and Technological Innovation Project - Qingdao National Laboratory for Marine Science and Technology [2015ASKJ02, 2015ASKJ02-03-03]
- Youth Innovation Promotion Association CAS
- Chinese Academy of Science and Technology Service Network Planning (Shandong Province) [KFJ-EW-STS-060]
- Chinese Academy of Science and Technology Service Network Planning (Fujian Province)
Ocean warming has multifaceted impacts on marine organisms. This study investigated the different responses of Paralichthys olivaceus and the hybrids (P. olivaceus female x P. dentatus male) to chronic and acute heat stress. By comparing their survival, behavioural and histological changes, we found that the hybrids possess a better thermal tolerance with a higher cumulative survival rate (CSR), relatively fewer behavioural changes and less gill damage. Moreover, we analysed the relationship between thermal tolerance and the hsp70 expression pattern and found that thermal tolerant species (the hybrids) exhibited higher threshold induction temperature, shorter durations, stronger magnitudes and a delay in hsp70 expression. We speculated that the expression mode of hsp70, rather than itself, plays a critical role in thermal tolerance. These findings would improve the understanding of hsp70 in future marine climate research and help clarify the profound effects of rising temperature on marine demersal fishes. (C) 2017 Elsevier Ltd. All rights reserved.
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