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♦ ¹Seasonal variation in the diets of bluefish, Pomatomus saltatrix (Pomatomidae) and striped weakfish, Cynoscion guatucupa (Sciaenidae) in southern Brazil: implications of food partitioning, Flavia M. Lucena, Teodoro Vaske, Jr., Jim R. Ellis & Carl M. O’Brien, Environmental Biology of Fishes 57: 423–434, 2000.
♦ ²Feeding ecology and abundance of two sympatric skates, the shortfin sand skate Psammobatis normani McEachran, and the smallthorn sand skate P. rudis Günther (Chondrichthyes, Rajidae), in the southwest Atlantic , Ezequiel Mabragaña and Diego A. Giberto, ICES J. Mar. Sci. (2007) 64 (5): 1017-1027