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Feeding ecology of the gulf silverside,Menidia peninsulae,near Crystal River,Florida, with notes on its life history
Authors:Jeffrey R Lucas
Institution:1. Department of Zoology, University of Florida, 32611, Gainesville, Florida
Abstract:Feeding habits ofMenidia peninsulae were analyzed monthly over a one year period and compared to planktonic prey available at the capture site. Three feeding stages were found: (1) In early spring, young-of-the-year fed on tychoplankton and detritus. (2) From late spring through winter,M. peninsulae preyed selectively on calanoid copepods and cypris larvae. (3) GravidM. peninsulae fed primarily on amphipods and larval silversides. In the Crystal River area,M. peninsulae reproduce in early spring. Silversides apparently migrate from the higher salinity bays to the lower salinity marshes in the summer, and then move back into the bays in fall.
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