发表在《期刊》上的一项新研究科学报告,links neurological impairment in some fish to increased carbon dioxide levels. Researchers at the University of Miami (UM) Rosenstiel School of Marine and Atmospheric Science and the弧形珊瑚礁研究卓越中心at James Cook University studied Spiny Damselfish (acanthromis polyacanthus)in this first-of-its-kind study.
The fish were collected over a three-week period from the reefs around Lizard Island, Australia and separated into two groups—those exposed to ordinary CO2“控制”条件以及暴露于高架CO的条件2levels. What they found was that increases in CO2alters brain chemistry in certain fish and causes a disruption in behavior.
继CO的四天之后2exposure, the damselfish were subjected to a behavioral test, and brain and blood chemistry were measured to confirm findings. To study their behavior, the fish were placed in a two-choice flume system and where given the choice between control seawater or water containing a chemical alarm cue.
In the wild, under normal ocean condition, the damselfish will typically avoid the particular cue since it represents the smell associated with an injured fish of its own species.
The researchers found that the damselfish exposed to elevated carbon dioxide levels were spending significantly more time near the chemical alarm cue than the control fish, a behavior that would be considered abnormal. The measurements of brain and blood chemistry provided further evidence that elevated CO2caused the altered behavior of the fish.
Um Rosenstiel School说:“这是第一次,显示出脑和血液中化学改变改变的生理测量与珊瑚礁鱼类的行为的改变直接相关。”Maytag鱼类学教授和领导者RECOVER ProjectMartin Grosell, the senior author of the study. “Our findings support the idea that fish effectively prevent acidification of internal body fluids and tissues, but that these adjustments lead to downstream effects including impairment of neurological function.”
The study, titled “Altered brain ion gradients following compensation for elevated CO2与珊瑚礁鱼类中的行为交替有关。”Scientific Reports。该研究的合着者包括:Rachael Heuer;马丁·格罗塞尔(Martin Grosell);Megan J. Welch和Jodie L. Rummer和Philip L. Munday来自詹姆斯·库克大学(James Cook University)弧形珊瑚礁研究中心。
国家科学基金会,迈阿密科学大学奖学金,卓越中心为这项研究提供了资金支持。Heuer还由NSF研究生研究奖学金资助来进行研究。[[RSMAS]