Importance of Resident and Seasonally Transient Prey to Largemouth Bass in the St. Johns River, Florida

摘要: AbstractWe examined seasonal dynamics of prey availability and diets Largemouth Bass Micropterus salmoides in the St. Johns River, Florida. The four most common species were Threadfin Shad Dorosoma petenense, Bay Anchovy Anchoa mitchilli, Atlantic Croaker Micropogonias undulatus, Menhaden Brevoortia tyrannus. number found varied significantly by month (year-round) predator size (“small,” 432 mm TL, n = 114). energetically beneficial to predators when available. Of collected trawls, only menhaden trawl catch was positively correlated with its appearance bass diets. eaten all sizes, but from September through November. did not feed heavily on juvenile anadromous shads Alosa spp. during their autumn migration, this likely reflected low abundance these clupeid ...