Presentation on theme: "Stacy Farina, Michelle L. Walsh, and W. H. Howell"— Presentation transcript:
1Winter Flounder Stock Enhancement: Examining the Onset of Wild Weaning in Pellet-Reared Fish Stacy Farina, Michelle L. Walsh, and W. H. HowellThe Department of Biological SciencesUniversity of New Hampshire, Durham, NH 03801
11Why is weaning important? Transitioning to a live diet can be stressful!YIKES!
12Our ProjectExamine the transition of pellet-reared winter flounder onto a wild diet once released
13Methods Spring 2007 Juvenile winter flounder reared in the Laboratory Summer 2007Released in cages (10 fish per cage) in a coveUNH’s Coastal Marine LaboratoryCages were retrieved every 3 hours after release up to 51 hours
24What Can We Conclude?After 18 hours, most fish had food in their stomachs.Inorganics were common within the first 12 hours, but minimal after.Diet was composed of mainly polychaete worms and crustaceans (copepods and amphipods), and was similar to that of wild fish.Gut fullness increased with time.
26Ongoing WorkLong-term studies of feeding, growth, and survival after releaseExamine impact of live laboratory diets on onset and quality of weaningAssess feeding behavior of winter flounder raised on formulated pellets
27AcknowledgmentsWe gratefully acknowledge Elizabeth A. Fairchild, Nate Rennels, Travis Ford and Laughlin Siceloff for their assistance with experimental design and field work, and Kristin Garabedian and Katie Robertson for help with dissections and data entry. We thank the laboratories of Jim Haney and Larry Harris for use of their equipment. This project was funded by the University of New Hampshire’s Hamel Center for Undergraduate Research, The Graduate School and the Science Consortium for Ocean Replenishment (SCORE), a division of the National Oceanic and Atmospheric Administration (NOAA).