1. Insects for Fly Fishing
Clemson University
17 March 2018
Workshop Leader:
Dr. John C. Morse
Assistants:
Dr. Mike Ferro
Maddie Genco
Kelly Murray
Suellen Pometto
Coleson Wrege

2. Plan for the day
9: General overview of stream ecology and insect morphology 9: Introduction to Insect Orders and Ephemeroptera 10:00 -- Microscope work with adult and larval mayflies 11: Preliminary report on research work in the Davidson River 12:00 -- Lunch 1: Introduction to Plecoptera 1: Microscope work with adult and larval stoneflies 2: Introduction to selected aquatic Diptera 2: Introduction to Trichoptera 3: Microscope work with adult and larval caddisflies 5: Conclusion

3. H.B.N. Hynes, 1970, THE ECOLOGY OF RUNNING WATERS, Chapter 9, “Factors Controlling Benthic Invertebrates”
Most important:
1. Current speed
2. Temperature (including effects of altitude, season, and source)
3. Substrate
4. Dissolved substances [DO, salts, pH, minerals (hardness), etc.]

4. H.B.N. Hynes, 1970, THE ECOLOGY OF RUNNING WATERS, Chapter 9, “Factors Controlling Benthic Invertebrates”
Other important factors:
5. Liability to drought and floods (flow regime)
6. Food
7. Competition between species
8. Shade
9. Zoogeography (historical-phylogenetic and ecological)

5. Habits Surface-dwelling “neuston” Skaters Surface breathers Climbers
Swimmers
Burrowers
Sprawlers
Clingers

6. Feeding Strategies Piercing-predator (>10μ3)
Shredder-detritivore (>10μ3)
Collector-gatherer (<10μ3)

7. Feeding Strategies: Shredding Detritivores, Microbes
Entrainment
Leaching
Conditioning
Ingestion
Digestion
Assimilation
Excretion

8. Feeding Strategies Collector-filterer (<10μ3)
Shredder-herbivore (>10μ3)
Engulfer-predator (>10μ3)

9. Feeding Strategies: Scrapers

10. River Continuum Concept
Gradient of physical variables from headwaters to mouth of a stream that result in a predictable community structure and function

11. River Continuum Concept

12. Nutrient Spiraling Concept