INTERMALE AGGRESSIVE SIGNALS IN WEAKLY ELECTRIC FISH ARE MODULATED BY MONOAMINES
INTERMALE AGGRESSIVE SIGNALS IN WEAKLY ELECTRIC FISH ARE MODULATED BY MONOAMINES
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DOI：
10.1016/0166-4328(87)90046-5
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发表时间：
1987-07-01
影响因子：
2.7
通讯作者：
ELLIS, WG
中科院分区：
文献类型：
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作者：
MALER, L;ELLIS, WG
Apteronotus leptorhynchus 是一种产生持续高频电器官放电 (EOD) 的裸鱼。该物种的雄性利用 EOD 频率（鸣叫声）的瞬时增加作为攻击性信号。他们还将其 EOD 频率从附近同类的相似频率转移开，以保护他们的电子定位能力（干扰回避响应，JAR）。单胺被认为是各种感觉运动和情感系统（包括攻击行为）的调节剂。由于这些单胺存在于这种鱼的大脑中（未发表的观察结果），我们使用这些简单且可量化的行为来研究单胺的作用，特别强调对攻击性信号（鸣叫）可能产生的特定影响。当将血清素（0.1μg）直接注射到这些鱼的心室时，它会短暂地抑制鸣叫（攻击性），但不会抑制 JAR；这与哺乳动物中血清素抑制攻击行为的假设是一致的。去甲肾上腺素 (0.1 μg) 可增强鸣叫声和 JAR。多巴胺 (0.1 μg) 增强 JAR；它对鸣叫（抑制或激发）具有强大但不一致的影响。
Apteronotus leptorhynchus is a gymnotid fish producing a constant high frequency electric organ discharge (EOD). Males of this species use transient increases in EOD frequency (chirps) as aggressive signals. They will also shift the frequency of their EOD away from the similar frequency of a nearby conspecific in order to protect their ability to electrolocate (jamming avoidance response, JAR). Monoamines have been implicated as modulatory agents for various sensorimotor and affective systems, including aggressive behaviour. Since these monoamines are present in the brain of this fish (unpublished observation), we have used these simple and quantifiable behaviours to study the role of monoamines, with special emphasis on possible specific effects on aggressive signalling (chirps). When serotonin (0.1 .mu.g) is injected directly into the ventricle of these fish it briefly inhibits chirping (aggression) without inhibiting the JAR; this is consistent with the hypothesis that, in mammals, serotonin inhibits aggressive behaviour. Noradrenaline (0.1 .mu.g) enhances both chirping and the JAR. Dopamine (0.1 .mu.g) enhances the JAR; it has powerful but inconsistent effects on chirping (inhibition or excitation).