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The vision thresholds of nigro (Cichlasoma nigrofasciatum) on white LED light through ECG analysis
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 Title & Authors
The vision thresholds of nigro (Cichlasoma nigrofasciatum) on white LED light through ECG analysis
HEO, Min-A; KIM, Min-Son; SHIN, Hyeon-Ok;
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This study was conducted to investigate visual threshold of nigro (Cichlasoma nigrofasciatum) on white LED light. The visual threshold was obtained by analyzing electrocardiogram (ECG) of the nigro. 5 individuals (body weight: 15.62~45.49 g; TL: 8.9~12.4 cm) were trained for lights by an electric stimulus. And then the heart rate (beats/10s) before and after switching on the light were compared. Light intensity range was from 0.00 to 226.4 lux. Average heart rate was 10.36 beats/10s in the normal condition. When the fish perceived the light, the heart rate was decreased. Visual threshold of the fish was 2.59 lux.
Electrocardiogram (ECG);Nigro;White LED light;Visual threshold;
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