期刊
MARINE ENVIRONMENTAL RESEARCH
卷 129, 期 -, 页码 408-412出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.marenvres.2017.06.013
关键词
UV; Temperature; Weight gain; Environmental stressors
资金
- Universidad Andres Bello [DI 17-10R, DI 16-12/R]
- FONDECYT Program [1171056, 3170522, 11150548]
- Millennium Nucleus Center for the Study of Multiple-Drivers on Marine Socio-ecological Systems - MINECON [NC120086]
UV-radiation (UVR) and temperatures have increased substantially over recent decades in many regions of the world. Both stressors independently have shown to affect the metabolism and growth in fish. However, because increase of both stressors are occurring concomitantly, to better understand their influences on marine species, their combined effects were evaluated. We test the hypothesis that UVR and temperature act synergistically affecting the metabolism, digestive process and growth of an intertidal fish. Two UVR conditions (with and without UVR) and two temperature levels (20 degrees C and 25 degrees C) were used. UVR increase the oxygen consumption and this was associated to opaque feces production. The absorption efficiency was higher without UVR at high temperatures (25 degrees C) and with UVR at low temperatures (20 degrees C). Finally, independent of UVR treatment, fish subjected to low temperature have higher biomass than those of high temperature. The interaction between UVR and temperature may influence on the physiology and growth of animals that inhabit in extreme habitats as upper intertidal, it could pose significant functional for aquatic animal survivorship. (C) 2017 Elsevier Ltd. All rights reserved.
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