小柯机器人

海洋酸化不会损害珊瑚礁鱼类的行为
2020-01-10 14:16

挪威科技大学Josefin Sundin、澳大利亚迪肯大学Timothy D. Clark等研究人员合作发现,海洋酸化并不损害珊瑚礁鱼类的行为。2020年1月8日,《自然》杂志在线发表了这项成果。

研究人员发现,与以前的研究相比,本世纪末海洋酸化水平对珊瑚礁鱼类的重要行为影响微不足道,例如避免从掠食者获得化学线索、鱼类活动水平和行为偏侧化(左右转向偏好)。使用数据模拟,研究人员还表明,在先前的几项研究中报告的较大的效应量和较小的组内差异是极不可能的。总之,这些发现表明,海洋酸化对珊瑚礁鱼类行为的报道影响是不可再现的,这表明行为扰动并不是高二氧化碳海洋中珊瑚礁鱼类的主要后果。

研究人员表示,在过去的一个世纪中,海洋中二氧化碳的分压迅速增加,推动了海洋酸化并引起人们对海洋生态系统稳定性的关注。据预测,珊瑚礁鱼类特别容易受到世纪末海洋酸化的影响。几篇高水平的论文报道了严重的行为和感觉损害,例如,在海洋酸化条件下,捕食者的化学线索被完全吸引。

附:英文原文

Title: Ocean acidification does not impair the behaviour of coral reef fishes

Author: Timothy D. Clark, Graham D. Raby, Dominique G. Roche, Sandra A. Binning, Ben Speers-Roesch, Fredrik Jutfelt, Josefin Sundin

Issue&Volume: 2020-01-08

Abstract: The partial pressure of CO2 in the oceans has increased rapidly over the past century, driving ocean acidification and raising concern for the stability of marine ecosystems13. Coral reef fishes are predicted to be especially susceptible to end-of-century ocean acidification on the basis of several high-profile papers4,5 that have reported profound behavioural and sensory impairmentsfor example, complete attraction to the chemical cues of predators under conditions of ocean acidification. Here, we comprehensively and transparently show thatin contrast to previous studiesend-of-century ocean acidification levels have negligible effects on important behaviours of coral reef fishes, such as the avoidance of chemical cues from predators, fish activity levels and behavioural lateralization (leftright turning preference). Using data simulations, we additionally show that the large effect sizes and small within-group variances that have been reported in several previous studies are highly improbable. Together, our findings indicate that the reported effects of ocean acidification on the behaviour of coral reef fishes are not reproducible, suggesting that behavioural perturbations will not be a major consequence for coral reef fishes in high CO2 oceans. In contrast to previous studies, analyses now show that ocean acidification does not perturb important behaviourssuch as the avoidance of chemical cues from predatorsof coral reef fishes.

DOI: 10.1038/s41586-019-1903-y

Source:https://www.nature.com/articles/s41586-019-1903-y

Nature:《自然》,创刊于1869年。隶属于施普林格·自然出版集团,最新IF:69.504
官方网址:http://www.nature.com/
投稿链接:http://www.nature.com/authors/submit_manuscript.html


本期文章:《自然》:Online/在线发表

分享到:

0