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Acanthurus is a representative and widespread genus of marine fish that plays a key role in ecological dynamics of coral reefs. Three species are common along coastal reefs of Western Atlantic: A. coeruleus, A. bahianus, and A. chirurgus. The cytogenetic patterns of these species indicated sequential steps of chromosomal rearrangements dating back 19–5 millions of years ago (M.a.) that accounted for...
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