Ocean acidification slows retinal function in a damselfish through interference with GABAA receptors

被引：99

作者：

Chung, Wen-Sung ^{[1
]}

Marshall, N. Justin ^{[1
]}

Watson, Sue-Ann ^{[2
,3
]}

Munday, Philip L. ^{[2
,3
]}

Nilsson, Goran E. ^{[4
]}

机构：

[1] Univ Queensland, Queensland Brain Inst, Brisbane, Qld 4072, Australia

[2] James Cook Univ, ARC Ctr Excellence Coral Reef Studies, Townsville, Qld 4811, Australia

[3] James Cook Univ, Sch Marine & Trop Biol, Townsville, Qld 4811, Australia

[4] Univ Oslo, Dept Biosci, N-0316 Oslo, Norway

来源：

JOURNAL OF EXPERIMENTAL BIOLOGY | 2014年 / 217卷 / 03期

基金：

澳大利亚研究理事会;

关键词：

Flicker fusion frequency; Electroretinogram; Carbon dioxide; Vision; Coral reef; CORAL-REEF FISHES; CARBONIC-ACID; DISSOCIATION; BICUCULLINE; CONSTANTS; SEAWATER; BEHAVIOR; ABILITY; VISION;

D O I：

10.1242/jeb.092478

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Vision is one of the most efficient senses used by animals to catch prey and avoid predators. Therefore, any deficiency in the visual system could have important consequences for individual performance. We examined the effect of CO2 levels projected to occur by the end of this century on retinal responses in a damselfish, by determining the threshold of its flicker electroretinogram (fERG). The maximal flicker frequency of the retina was reduced by continuous exposure to elevated CO2, potentially impairing the capacity of fish to react to fast events. This effect was rapidly counteracted by treatment with a GABA antagonist (gabazine), indicating that GABAA receptor function is disrupted by elevated CO2. In addition to demonstrating the effects of elevated CO2 on fast flicker fusion of marine fishes, our results show that the fish retina could be a model system to study the effects of high CO2 on neural processing.

引用

页码：323 / 326

页数：4

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