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Reproductive priming in mature male Atlantic salmon parr exposed to the sound of redd cutting
Authors:A Moore  ‡ C P Waring  
Institution:Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory, Pakefield Road, Lowestoft, SuVolk NR33 0HT, U.K.;School of Biological Sciences, University of Portsmouth, King Henry I Street, Portsmouth, Hampshire PO1 2DY, U.K.
Abstract:The sounds of a wild female Atlantic salmon cutting a redd were associated with significant increases in the levels of plasma 17,20β-dihydroxy-4-pregnen-3-one (17,20βP) and of expressible milt in mature male parr, comparable with levels of the steroid and milt produced in parr exposed to the priming pheromone, prostaglandin F2a. Hence auditory cues may have a significant role in synchronising reproductive physiology in Atlantic salmon.
Keywords:Atlantic salmon  reproduction  sound  physiology
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