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Macro Invertebrates

Macro Invertebrates. Wednesday – November 13, 2009. Bell Ringer 11/17/09. In your notebook, arrange the following items into created groups, and why those groups: Fork Spoon Shovel Toothpick Ice cream scoop Bucket Spear. Aquatic Macroinvertebrates. A presentation created by:

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Macro Invertebrates

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  1. Macro Invertebrates Wednesday – November 13, 2009

  2. Bell Ringer 11/17/09 • In your notebook, arrange the following items into created groups, and why those groups: • Fork • Spoon • Shovel • Toothpick • Ice cream scoop • Bucket • Spear

  3. AquaticMacroinvertebrates A presentation created by: CREEK CONNECTIONS Box 10, Allegheny College Meadville, PA 16335 http://creekconnections.allegheny.edu Illustration source: Microsoft Office Clip Art

  4. Aquatic Insect Feeding Detritus Shredders Decomposers Illustrations Source: Aquatic Entomology by W. Patrick McCafferty, 1998 Coarse Particulate Organic Matter (CPOM) Cranefly Larva http://fenwick.pvt.k12.il.us/Creek/webpage/experimt/inverts/bugnumbr.html Illustration Source: Stream Ecology: Structure and Function of Running Waters by J. David Allan, 1995.

  5. Shredders • Shredders – help to breakdown the clumps of organic materials and detritus • Detritus: dead leaves, plants parts, twigs and other organic matter • Examples of shredders: • Cranefly larvae • Case-building caddisfly larvae • Scuds • Aquatic sowbugs • Some small stonefly nymphs

  6. Aquatic Insect Feeding Fine Particulate Organic Matter (FPOM) Collectors Filtering Collectors Gathering Collectors Brushlegged Mayfly Nymph Source of photo: unknown Blackfly Larva Illustrations Source (both): Aquatic Entomology by W. Patrick McCafferty, 1998 http://www.whalesongs.org/dominica/lesson/image125.html

  7. Filtering and Gathering Collectors • Filtering Collectors – obtain food from bits and pieces in the water column. • Examples of filtering collectors: • Mayfly nymphs • Net-spinner caddisfly larvae • Blackfly larvae • Mussels • Some midge larvae

  8. Filtering and Gathering Collectors • Gathering Collectors – obtain food from the stream bottom • Examples of gathering collectors: • Some mayfly nymphs • Some caddisfly larvae • Some midge larvae

  9. Aquatic Insect Feeding Grazers or Scrapers Periphyton - algae on rocks Water Penny http://www.vvm.com/~jevans/sfaquaticinvertebrates/folderaquaticinsects/wpenn.html Case-building Caddisfly Larva www.rollanet.org/~streams/ macroinv/caddiscase.jpg Illustration Source: Stream Ecology: Structure and Function of Running Waters by J. David Allan, 1995.

  10. Grazers/Scrapers • Grazers/Scrapers – feed on algae on rocks • Examples of grazers/scrapers: • Water pennies • Flathead mayfly nymphs • Snails • Casebuliding caddisfly larvae

  11. Aquatic Insect Feeding Predators Dragonfly Larva Giant Water Bug http://bruinbooks.com/giantwaterbug.htm Giant Water Bug Illustrations Source (two above): Aquatic Entomology by W. Patrick McCafferty, 1998

  12. Predators • Predators – feed on other aquatic insects • Examples of predators: • Dobsonfly larvae • Fishfly larvae • Dragonfly nymphs • Water bugs • Most beetles • Crayfish • Water striders • Some stonefly nymphs

  13. If you were absent… • Copy notes from this presentation.

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