HYPOTHALAMIC AND TELENCEPHALIC CATECHOLAMINE CONTENT IN THE BRAIN OF THE TELEOST FISH, PYGOCENTRUS-NOTATUS, DURING THE ANNUAL REPRODUCTIVE-CYCLE
HYPOTHALAMIC AND TELENCEPHALIC CATECHOLAMINE CONTENT IN THE BRAIN OF THE TELEOST FISH, PYGOCENTRUS-NOTATUS, DURING THE ANNUAL REPRODUCTIVE-CYCLE
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DOI：
10.1016/0016-6480(90)90170-q
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发表时间：
1990-11-01
影响因子：
2.7
通讯作者：
MARCANO, D
中科院分区：
文献类型：
--
作者：
GUERRERO, HY;CACERES, G;MARCANO, D
对委内瑞拉淡水鱼“Caribe Colorado”的下丘脑和端脑提取液中去甲肾上腺素(NA)、多巴胺(DA)和肾上腺素(A)的含量进行了测定。NA在端脑的含量显著高于下丘脑，而DA在下丘脑的含量显著高于端脑。根据生殖阶段和环境条件的变化，下丘脑和端脑都会出现波动。在下丘脑中，与周期的其他时期相比，前典当时期(6月)DA含量最高。虽然NA浓度在产卵期间有所下降，但在其他时期没有显着变化。端脑和下丘脑的DA浓度变化规律相似。在端脑中，NA水平在准备和预典当期间升高，但在产卵期间急剧下降。在生殖的任何阶段，这两个区域都没有观察到性别差异。
The catecholamines noradrenaline (NA), dopamine (DA), and adrenaline (A) were measured in hypothalamic and telencephalic extracts of the Venezuelan freshwater fish "caribe colorado," Pygocentrus notatus, at different stages of the reproductive cycle. The concentration of NA was found to be significantly higher in the telencephalon than in the hypothalamus, but that of DA was higher in the hypothalamus than in the telencephalon. Fluctuations depending upon the reproductive stage and environmental conditions occurred in both hypothalamus and telencephalon. In the hypothalamus, DA content was highest during the prespawning period (June) as compared to other periods of the cycle. Although the NA concentration was reduced during spawning there was no significant variation during any other period. DA concentration in both telencephalon and hypothalamus showed a similar pattern of changes. In the telencephalon, NA levels increased between preparatory and prespawning periods but decreased sharply during spawning. No sex differences were observed in either area at any stage of reproduction.