Trophic transfer, defined

Prey fish are here defined as small, usually short-lived, finfish. In North American fresh waters, many are members of the cyprinid (minnow), percid (perch), and centrarchid (sunfish) families. Prey fish are widely distributed, common, and important in the transfer of MeHg to higher trophic levels, such as piscivorous fish and many fish-eating birds. MeHg concentrations in prey fish of uniform age are less... 

Baudo R (1981) Is analytically defined chemical spe-elation the answer we need to understand trace element transfer along a trophic chain In Trace element speciation in surface waters and its ecological implications, pp.275-290. Proceedings of the NATO-AIOL Workshop, Genova-Nervi, Plenum Publishing Corporation, New York. 

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