Elevated carbon dioxide has limited acute effects on Lepomis macrochirus behaviour.
Elevated carbon dioxide has limited acute effects on Lepomis macrochirus behaviour.
复制标题
二氧化碳浓度升高对Lepomis macrochirus 行为的急性影响有限。
作者：
John A. Tix;C. Hasler;C. Sullivan;J. D. Jeffrey;C. Suski
本研究调查了蓝鳃太阳鱼暴露于高浓度二氧化碳（CO2）后的行为反应。为此，L。在环境pCO2（160 μ atm pCO2）下保持7天，然后暴露于升高的pCO2（8300 μ atm pCO2）下5天，然后再返回到环境条件下5天以恢复。在每个暴露期结束时，对几个行为指标进行量化（大胆、偏侧化和活动）。数据显示，侧化和大多数与表现和大胆相关的指标没有变化。然而，在大胆的测试，平均速度，在趋触（外）区的速度和比例的趋触区的活动增加与pCO2暴露。暴露后L.长臂猿减少。此外，在暴露前和暴露后期间，在所研究的17个指标中的3个指标（中间区域的平均速度、物体附近的平均速度和到达物体区域的总穿梭次数）中，个体等级是可重复的，但在CO2暴露期间则不是，这表明升高的pCO2扰乱了一些行为表现。总的来说，这项研究发现，pCO2升高会导致淡水鱼的行为中断，如L。对大鳍金枪鱼的影响似乎没有对海洋鱼类的影响那么严重。
The current study investigated the behavioural response of Lepomis macrochirus following exposures to elevated carbon dioxide (CO2 ). For this, L. macrochirus were held at ambient pCO2 (160 μatm pCO2 ) for 7 days, then exposed to elevated pCO2 (8300 μatm pCO2 ) for 5 days, and then returned to ambient conditions for a further 5 days to recover. At the end of each exposure period, several behavioural metrics were quantified (boldness, lateralization and activity). Data showed no change in lateralization and most metrics associated with performance and boldness. During the boldness test, however, average velocity, velocity in the thigmotaxis (outer) zone and proportion of activity in the thigmotaxis zone increased with pCO2 exposure. During post-exposure, average velocity of L. macrochirus decreased. In addition, individual rank was repeatable during the pre-exposure and post-exposure period in three of the 17 metrics investigated (average velocity in the middle zone, average velocity near object and total shuttles to the object zone), but not during the CO2 exposure period, suggesting that elevated pCO2 disrupted some behavioural performances. Overall, this study found elevated pCO2 caused disruption to behaviours of freshwater fishes such as L. macrochirus and effects do not appear to be as serious as has been shown for marine fishes.
影响因子：
1.9
作者：
LINDSTROM, MJ;BATES, DM
通讯作者：
BATES, DM