Special glands in male sea lamprey gills release a bile that acts as a sex pheromone to attract long-distance females.
“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 male of this fish species signals both its reproductive status and location to females by secreting a pheromone that can act over long distance.” (Li et al. 2002:138)
Last Updated June 1, 2018