A sensitive analytical method for quantifying petromyzonol sulfate in water as a potential tool for population monitoring of the southern pouched lamprey, Geotria australis, in New Zealand streams.

Journal of Chemical Ecology
Michael Stewart, Cindy F Baker

Abstract

The migratory southern pouched lamprey, Geotria australis, is a culturally important fish native to New Zealand. Anecdotal evidence suggests that populations of G. australis have declined from historic levels, and presently, this species is rare in many New Zealand rivers and streams. Migratory sea lamprey (Petromyzon marinus) use a pheromone mixture to locate suitable spawning sites. This mixture is comprised of three steroids: petromyzonol sulfate (PS), petromyzonamine disulfate (PADS), and petromyzosterol disulfate (PSDS). We examined the migratory pheromone mixture released by G. australis ammocetes and found that they excrete predominantly PS. PADS has been detected on some occasions in low concentrations, and PSDS either is not released, or is released in extremely low concentrations. By using a recently developed sensitive mass spectrometry method, we compared passive sampling techniques against more traditional active water sampling as methods for estimating lamprey populations in local streams. Passive sampling provided quantitative data for PS from all sites surveyed, with uptake rates of 0.3 to 45.7 pg/day observed. Conversely, active sampling returned only one positive result out of 19 samples, and with a method det...Continue Reading

References

Apr 6, 2002·Science·Weiming LiDouglas A Gage
Jul 3, 2004·Environmental Toxicology and Chemistry·David A AlvarezStanley E Manahan
Jan 13, 2006·Nature Chemical Biology·Peter W SorensenThomas R Hoye
Jan 24, 2009·Proceedings of the National Academy of Sciences of the United States of America·Nicholas S JohnsonWeiming Li
Mar 31, 2010·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Nicholas S Johnson, Weiming Li
Nov 15, 2011·Journal of Chemical Ecology·Michael StewartTerry Cooney

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Citations

Nov 15, 2011·Journal of Chemical Ecology·Michael StewartTerry Cooney
Apr 18, 2018·Natural Product Reports·Ke LiWeiming Li
Oct 17, 2017·Journal of Evolutionary Biology·T J BuchingerN S Johnson

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