On the wrong track: ocean acidification attracts larval fish to irrelevant environmental cues
On the wrong track: ocean acidification attracts larval fish to irrelevant environmental cues
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DOI：
10.1038/s41598-018-24026-6
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发表时间：
2018-04-11
影响因子：
4.6
通讯作者：
Nagelkerken, Ivan
中科院分区：
文献类型：
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作者：
Rossi, Tullio;Pistevos, Jennifer C. A.;Nagelkerken, Ivan
海洋生物种群的补充在很大程度上取决于幼虫能否成功地扩散到合适的成虫栖息地。海洋酸化改变了海洋动物对物理和化学线索的行为反应，包括定居期仔鱼对首选栖息地气味的不适应性威慑和对非首选栖息地气味的吸引。然而，感官补偿可能会让鱼使用替代解决线索，如声音。我们表明，未来的海洋酸化逆转幼鱼（肺鱼）的吸引力，他们的首选解决的声音（热带河口红树林）。相反，酸化引发了对不熟悉的声音（温带岩石礁）以及人工产生的声音（白色噪音）的吸引力，这两种声音都被生活在当今条件下的鱼类所忽视。这一发现表明，到世纪末，在二氧化碳排放情景照常进行的情况下，这些动物可能会避免功能性环境线索，并被不提供适应优势或潜在有害的线索所吸引。如果动物不能适应二氧化碳浓度升高的条件，这种适应不良可能会破坏这种和其他经济上重要物种的种群补充。
Population replenishment of marine life largely depends on successful dispersal of larvae to suitable adult habitat. Ocean acidification alters behavioural responses to physical and chemical cues in marine animals, including the maladaptive deterrence of settlement-stage larval fish to odours of preferred habitat and attraction to odours of non-preferred habitat. However, sensory compensation may allow fish to use alternative settlement cues such as sound. We show that future ocean acidification reverses the attraction of larval fish (barramundi) to their preferred settlement sounds (tropical estuarine mangroves). Instead, acidification instigates an attraction to unfamiliar sounds (temperate rocky reefs) as well as artificially generated sounds (white noise), both of which were ignored by fish living in current day conditions. This finding suggests that by the end of the century, following a business as usual CO2 emission scenario, these animals might avoid functional environmental cues and become attracted to cues that provide no adaptive advantage or are potentially deleterious. This maladaptation could disrupt population replenishment of this and other economically important species if animals fail to adapt to elevated CO2 conditions.