期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 106, 期 4, 页码 1021-1026出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.0808530106
关键词
invasive species; odorant tracking; pest control; odorant disruption; jawless vertebrate
资金
- National Institute of Mental Health [T32 MH070343]
Female insect pheromone blends induce robust tracking responses in males and direct them into traps. In vertebrates, pheromones that induce strong and precise tracking responses in natural habitats have rarely been described. Here, we show in the sea lamprey (Petromyzon marinus), a vertebrate invader of the Laurential Great Lakes, that a synthesized component of the male mating pheromone, 7 alpha, 12 alpha, 24-trihydroxy-5 alpha-cholan-3-one24-sulfate (3kPZS), when released into a stream to reach concentrations of 10(-14), 10(-13), 10(-12),10(-11), or 10(-10) M, triggers robust upstream movement in ovulated females drawing approximate to 50%into baited traps. Experiments conducted in diverse stream segments demonstrate the level of behavioral response was not affected by habitat conditions and is effective over hundreds of meters. 3kPZS is equally effective at luring ovulated females as the whole pheromone blend released by males between 10(-14) and 10(-11) M. 3kPZS diverts ovulated females away from and disrupts orientation to male washings when applied at concentrations higher than washings. Indeed, a single pheromone compound is able to redirect female sea lampreys away from a natural pheromone source and lure them into traps, which should be more effective than targeting males when applied in population control. Our findings may spur the discovery of other potent and environmentally benign agents to combat biological invasion, a process accelerated by globalization, exacerbated by climate change, and costing the global economy US$ 1.4 trillion of damage annually.
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