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Blending Population Ecology and Parasitology

Blending Population Ecology and Parasitology. Kyle Luth GIS Fall 2008. Organisms. Helisoma anceps pulmonate snail found mostly in mud and in leaf litter host Daubaylia potomaca nematode parasite direct lifecycle. *Images: http://images.google.com, Chernin et al., 1960. Location.

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Blending Population Ecology and Parasitology

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  1. Blending Population Ecology and Parasitology Kyle Luth GIS Fall 2008

  2. Organisms • Helisoma anceps • pulmonate snail • found mostly in mud and in leaf litter • host • Daubaylia potomaca • nematode parasite • direct lifecycle *Images: http://images.google.com, Chernin et al., 1960

  3. Location • Mallard Lake • Forsyth County • freshwater, public access • Logistics: • Latitude: 36.0029 • Longitude: -80.4028 • Elevation: 705 ft (215 m) • Perimeter: 1,426 m *Image: www.co.forsyth.nc.us/Tanglewood/recr_Fishing.aspx

  4. The Process

  5. Goals: determine which substrata are where allow for random sampling model determine where snails are located distribution density determine where nematodes are located distribution density N M L O K J P I Q H G F E D C B A Transects A

  6. Questions to Answer • Does snail density influence the transmission of the nematode? • Are there patterns of snail and/or parasite distribution? • Are there “hot spots” of infection? • High incidence of host-parasite contact/interaction • What are the transmission dynamics assoc. with this system? • Hyp: Transmission will be greater in muddy areas than in leaf-cover areas.

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