Ocean acidification disrupts the innate ability of fish to detect predator olfactory cues

被引:394
作者
Dixson, Danielle L. [1 ,2 ]
Munday, Philip L. [1 ,2 ]
Jones, Geoffrey P. [1 ,2 ]
机构
[1] James Cook Univ, ARC Ctr Excellence Coral Reef Studies, Townsville, Qld 4811, Australia
[2] James Cook Univ, Sch Marine & Trop Biol, Townsville, Qld 4811, Australia
基金
澳大利亚研究理事会;
关键词
Amphiprion percula; innate behaviour; ocean acidification; olfactory cues; predator recognition; CORAL-REEF FISH; CLIMATE-CHANGE; RISK-ASSESSMENT; PREY; RECOGNITION; MORTALITY; ABUNDANCE; CALCIFICATION; RECRUITMENT; SETTLEMENT;
D O I
10.1111/j.1461-0248.2009.01400.x
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
While ocean acidification is predicted to threaten marine biodiversity, the processes that directly impact species persistence are not well understood. For marine species, early life history stages are inherently vulnerable to predators and an innate ability to detect predators can be critical for survival. However, whether or not acidification inhibits predator detection is unknown. Here, we show that newly hatched larvae of the marine fish Amphiprion percula innately detect predators using olfactory cues and this ability is retained through to settlement. Aquarium-reared larvae, not previously exposed to predators, were able to distinguish between the olfactory cues of predatory and non-predatory species. However, when eggs and larvae were exposed to seawater simulating ocean acidification (pH 7.8 and 1000 p. p. m. CO2) settlement-stage larvae became strongly attracted to the smell of predators and the ability to discriminate between predators and non-predators was lost. Newly hatched larvae were unaffected by CO2 exposure and were still able to distinguish between predatory and non-predatory fish. If this impairment of olfactory preferences in settlement-stage larvae translates to higher mortality as a result of increased predation risk, there could be direct consequences for the replenishment and the sustainability of marine populations.
引用
收藏
页码:68 / 75
页数:8
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