A Comparison of Fish Populations before and after Extensive Grass Carp Stocking

摘要: Abstract The grass carp, Ctenopharyngodon idella, has been introduced into more than 100 lakes, totaling over 20,000 hectares of water, in Arkansas as a biological weed control agent. introduction was effective for controlling or eliminating submersed aquatic weeds. There were some significant fluctuations aspects the fish populations these but lack general trends suggests that carp alone did not produce fluctuations. An examination total standing crop, shad biomass, numbers catchable largemouth bass, sunfish, crappie, and young-of-the-year sunfish bass reveals both increases decreases with no trend either direction. Plant removal by appear to improve condition factor bluegill, redear sunfish. Other variables such weather, water level fluctuation, fertilization, fishing pressure may have profound influence upon populations. Variation para...