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Daniel J. Fergus and Andrew H. Bass Localization and divergent profiles of estrogen receptors and aromatase in the vocal and auditory networks of a fish with alternative mating tactics Journal of Comparative Neurology 521

Article first published online: 19 JUN 2013 | DOI: 10.1002/cne.23320

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Estrogens are critical in the nervous system and for behavioral regulation. Plainfin midshipman fish have alternative male reproductive morphs with divergent, hormonally regulated vocal behaviors. We identified duplicate estrogen receptors and localized them to central vocal and auditory networks. Quantification of estrogen receptors and aromatase transcripts revealed unique expression profiles in the vocal motor nucleus (VMN) of male and female morphs, suggesting that VMN is a major estrogen target. Differential receptor expression is likely crucial in maintaining behavioral differences in alternative reproductive tactics.

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