期刊
JOURNAL OF EXPERIMENTAL BIOLOGY
卷 217, 期 3, 页码 323-326出版社
COMPANY BIOLOGISTS LTD
DOI: 10.1242/jeb.092478
关键词
Flicker fusion frequency; Electroretinogram; Carbon dioxide; Vision; Coral reef
类别
资金
- Australian Research Council
- ARC Centre of Excellence for Coral Reef Studies
- University of Oslo
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.
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