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Full-Text Articles in Aquaculture and Fisheries
Predator-Prey: Interactions Between The Spiny Waterflea (Bythotrephes Longimanus) And Pumpkinseed Sunfish (Lepomis Gibbosus), Jaime F. Leduc
Dissertations, Master's Theses and Master's Reports - Open
Small pumpkinseed sunfish ( Lepomis gibbosus), were found to be capable of removing the spine of Bythotrephes longimanus, an invasive cladoceran. Because fish consumption may be important in the dispersal or control of Bythotrephes, aquarium feeding experiments were conducted to 1) establish if the spine removal behavior of the pumpkinseeds was locally unique; 2) quantify how frequently pumpkinseeds exhibit the behavior; 3) determine if pumpkinseed handle Bythotrephes more quickly than other species of fish; and 4) verify if Bythotrephes' resting eggs pass through the digestive systems of pumpkinseeds in viable condition. The experiments revealed that pumpkinseeds (45-70 mm TL) from two ...