Common Carp Implanted with Prostaglandin F2α Release a Sex Pheromone Complex that Attracts Conspecific Males in Both the Laboratory and Field
Common Carp Implanted with Prostaglandin F2α Release a Sex Pheromone Complex that Attracts Conspecific Males in Both the Laboratory and Field
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植入前列腺素 F2α 的鲤鱼释放性信息素复合物，在实验室和野外都能吸引同种雄性
DOI：
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发表时间：
2012
影响因子：
2.3
通讯作者：
P. Sorensen
中科院分区：
文献类型：
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作者：
Hangkyo Lim;P. Sorensen
当排卵时，许多物种的雌性鱼释放F-前列腺素衍生的性信息素，吸引同种男性。最近，这种信息素在鲤鱼中被鉴定为前列腺素F2α（PGF 2 α）和未知的身体代谢产物的混合物，我们称之为“信息素复合物”。本研究试图通过建立一个以植入PGF 2 α的鲤鱼为信息素供体的系统来测试该信息素复合物在田间的活性。最初的实验确定，渗透泵每小时可输送高达0.4 mg的PGF 2 α，可植入鲤鱼体内，对其健康没有任何明显影响。第二项实验发现，植入PGF 2 α的雄性和雌性鲤鱼释放生物相关（和等效）量的PGF 2 α，沿着其两种看似无活性的代谢产物，持续时间长达2周。实验室实验表明，PGF 2 α植入鲤鱼后的气味对雄性同种具有很强的吸引力，并含有必需的体内代谢产物;它对雄性的吸引力与排卵鲤鱼的气味一样强，而且比单独使用PGF 2 α要好得多。最后，田间试验表明，PGF 2 α植入的雌鲤在20 m的距离上能吸引成熟的雄鲤，但不能吸引雌鲤。这是第一次证明PGF 2 α-基信息素在自然环境中的活性，并证实了PGF-信息素复合物在鲤鱼中的应用。我们认为，植入技术可能是有用的，在未来的研究如何PGF信息素的功能，并可以进一步发展，以吸引入侵鱼类用于控制。
When ovulated, female fish of many species are known to release a F-prostaglandin-derived sex pheromone that attracts conspecific males. Recently, this pheromone was identified in the common carp as a mixture of prostaglandin F2α (PGF2α) and unidentified body metabolites, which we termed a ‘pheromone complex.’ The present study sought to test the activity of this pheromone complex in the field by developing a system using carps implanted with PGF2α as pheromone donors. An initial experiment determined that osmotic pumps that delivered up to 0.4 mg of PGF2α per hour could be implanted into carp without any apparent effects on their health. A second experiment found that PGF2α-implanted male and female carp released biologically relevant (and equivalent) quantities of PGF2α, along with two of its seemingly inactive metabolites, for up to 2 weeks. Laboratory experiments demonstrated that the odor of PGF2α-implanted carp was highly attractive to male conspecifics, and included necessary body metabolites; it attracted males as strongly as ovulated carp odor, and much better than PGF2α alone. Finally, a field test demonstrated that PGF2α-implanted female carp attracted mature male, but not female carp, from a distance of 20 m. This is the first demonstration of the activity of a PGF2α-based pheromone in a natural environment and confirms the use of a PGF-pheromone complex in the carp. We suggest that the implant technique may be useful in future studies of how PGF pheromones function and could be further developed to attract invasive fish for use in control.