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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >L-kynurenine, an amino acid identified as a sex pheromone in the urine of ovulated female masu salmon
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L-kynurenine, an amino acid identified as a sex pheromone in the urine of ovulated female masu salmon

机译：L-犬尿氨酸，一种被鉴定为排卵雌性马苏鲑鱼尿中的性信息素的氨基酸

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摘要

Many animals employ sex pheromones to find mating partners during their reproductive seasons. However, most sex pheromones of vertebrates remain to be identified. Over the past 20 years, steroids and prostaglandins have been identified as sex pheromones in several fishes. These pheromones are broadly termed "hormonal pheromones" because they or their precursors act as hormones in these fishes. Hitherto, no other type of sex pheromone has been unambiguously identified in teleost fish. Here we report the identification of a "nonhormonal pheromone" in teleost fish. The urine of the reproductively mature female masu salmon (Oncorhynchus masou) contains a male-attracting pheromone. Bioassay-guided fractionation yielded an active compound that was identical to L-kynurenine in spectral and chromatographic properties. L-Kynurenine is a major metabolite Of L-tryptophan in vertebrates. This pheromone elicits a male-specific behavior at even picomolar concentrations; its electrophysiological threshold is 10-l' M. L-Kynurenine is a reasonable substance for female masu salmon to advertise their readiness for mating.
机译：许多动物在生殖季节使用性信息素来寻找交配伙伴。但是，大多数脊椎动物的性信息素仍有待确定。在过去的20年中，类固醇和前列腺素已在几种鱼类中被鉴定为性信息素。这些信息素被广泛地称为“激素信息素”，因为它们或它们的前体在这些鱼类中充当激素。迄今为止，在硬骨鱼中还没有明确鉴定出其他类型的性信息素。在这里，我们报告在硬骨鱼中鉴定出“非激素信息素”。繁殖成熟的雌性马苏鲑（Oncorhynchus masou）的尿液中含有吸引雄性的信息素。生物测定指导的分馏产生了一种活性化合物，该活性化合物的光谱和色谱特性与L-犬尿氨酸相同。 L-Kynurenine是脊椎动物中L-色氨酸的主要代谢产物。这种信息素甚至在皮摩尔浓度下也会引起雄性特有的行为。它的电生理阈值为10-l'M。L-Kynurenine是母马苏鲑鱼宣传其准备交配的合理物质。

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