| otolith microchemistry of tropical diadromous fishes: spatial and migratory dynamics. | otolith microchemistry was applied to quantify migratory variation and the proportion of native caribbean stream fishes that undergo full or partial marine migration. strontium and barium water chemistry in four puerto rico, u.s.a., rivers was clearly related to a salinity gradient; however, variation in water barium, and thus fish otoliths, was also dependent on river basin. strontium was the most accurate index of longitudinal migration in tropical diadromous fish otoliths. among the four spec ... | 2014 | 24673161 |