Bile Acid Secreted by Male Sea Lamprey That Acts as a Sex Pheromone

Author:

Li Weiming1,Scott Alexander P.2,Siefkes Michael J.1,Yan Honggao3,Liu Qin3,Yun Sang-Seon1,Gage Douglas A.3

Affiliation:

1. Department of Fisheries and Wildlife,

2. The Centre for Environment, Fisheries and Aquaculture Science, The Nothe, Barrack Road, Weymouth, Dorset DT4 8UB, UK.

3. Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI 48824, USA.

Abstract

We show that reproductively mature male sea lampreys release a bile acid that acts as a potent sex pheromone, inducing preference and searching behavior in ovulated female lampreys. The secreted bile acid 7α,12α,24-trihydroxy-5α-cholan-3-one 24-sulfate was released in much higher amounts relative to known vertebrate steroid pheromones and may be secreted through the gills. Hence, the male of this fish species signals both its reproductive status and location to females by secreting a pheromone that can act over long distances.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference35 articles.

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3. Fontaine M., Bull. Soc. Oceanogr. Fr. 17, 1681 (1939).

4. Teeter J., Can. J. Fish. Aquat. Sci. 37, 2123 (1980).

5. Carde R., Minks A., Annu. Rev. Entomol. 40, 559 (1995).

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