Sivell ecn 2012

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Sivell ecn 2012

  1. 1. Dr Duncan Sivell Do juveniles have enough alcohol? Recurating a spirit collection to meet modern taxonomic demands
  2. 2. Outline  The NHM Diptera spirit collection  Diptera life cycles and ecology  Existing curation: Notton protocol  New curation and enhancement  What for the future?
  3. 3. Waterhouse Building 1881
  4. 4. New Extensions 2001-2005
  5. 5. Darwin Centre 1 Steel fire resistant cabinets Adjustable wooden shelves Standardised plastic trays Environmental control Lab area for curation work
  6. 6. Diptera Spirit Collection Represents 3% of species housed in dry collections Collection Global; British and Irish material not separated. Families of medical importance well represented (eg Simuliidae, Culiciidae) Spirit is default preservation method for Diptera larvae New spirit building; Darwin Centre 1; collection rehoused in 2005. Eighteen cabinets of Diptera material.
  7. 7. Specimen containers
  8. 8. Diptera 160 000 species globally (an underestimate!) > 7000 species in Britain (well studied fauna) Diptera spend majority of their life as juveniles < 2% of Diptera are known as larvae ~ 4% of British species known as larvae
  9. 9. A juvenile existence? Calliphora vicina
  10. 10. Ecological diversity
  11. 11. Ecological diversity
  12. 12. Phoenix fly Dorycera graminum
  13. 13. The Spirit Collection
  14. 14. The Angels' Share
  15. 15. Spirit jars and parfaits need checking and topping-up; a ongoing task (Notton Protocol) New Curation Tasks Create a collection of British and Irish material (to coincide with the dry collections) Emphasis on DNA and larvae: influence research by creating an appropriate resource Spirit Curation
  16. 16. Topping-up: Notton Protocol
  17. 17. Notton, D.G., 2011. A new practical method for profiling and topping up alcohol preserved entomology collections. NatSCA News 21(August): 44-98 Notton Protocol
  18. 18. Parfait gaskets
  19. 19. Spirit jars and parfaits need checking and topping-up; a ongoing task (Notton Protocol) New Curation Tasks Create a collection of British and Irish material (to coincide with the dry collections) Emphasis on DNA and larvae: influence research by creating an appropriate resource Spirit Curation
  20. 20. Spirit jars and parfaits need checking and topping-up; a ongoing task (Notton Protocol) New Curation Tasks Emphasis on DNA and larvae: influence research by creating an appropriate resource Create a collection of British and Irish material (to coincide with the dry collections) Spirit Curation
  21. 21. Collection enhancement 2012 fieldwork Adults and larvae Absolute ethanol Melanostoma spp. Other projects
  22. 22. Summary Do juveniles have enough alcohol? No! But curation must be fit for purpose. What are the implications of preserving material in absolute ethanol? Evaporation rates? Less damaging to seal than IMS? Potential problems with osmotic stress? These factors need investigation
  23. 23. Summary Do juveniles have enough alcohol? No! But curation must be fit for purpose. What are the implications of preserving material in absolute ethanol? Evaporation rates? Less damaging to seal than IMS? Potential problems with osmotic stress? These factors need investigation
  24. 24. Questions?

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