Tautz for schumacher college 2011

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Tautz for schumacher college 2011

  1. 1. 1. Time & task as contextual cues<br />Honeybee cognition:how bees perceive the worldand communicate about it<br />Jürgen Tautz<br />BEEgroup, Würzburg University <br />October 11, 2011<br />
  2. 2. Index<br />Introduction<br />Vision<br />Communication<br />Learning experiments<br />Numerosity discrimination<br />Navigation <br />
  3. 3. 1. Introduction<br />170000 species of flowering plants are pollinated by honeybees<br />
  4. 4. Index<br />Introduction<br />Vision<br />Communication<br />Learning experiments<br />Numerosity discrimination<br />Navigation <br />
  5. 5. 2. Vision<br />
  6. 6. 2. Vision<br />
  7. 7. 2. Vision<br />Human vision<br />300nm<br />bee vision<br />
  8. 8. 2. Vision<br />
  9. 9. 2. Vision<br />daylight<br />UV light<br />cinquefoil<br />
  10. 10. Karl von Frisch( 1886-1982 )<br />10<br />
  11. 11. 2. Vision<br />Karl von Frisch: der Farben- und Formensinn der Bienen, 1915<br />
  12. 12. Index<br />Introduction<br />Vision<br />Communication<br />Learning experiments<br />Numerosity discrimination<br />Navigation <br />
  13. 13. 3. Communication<br />Karl von Frisch ( 1886-1982 )<br />
  14. 14. 3. Communication<br />
  15. 15. 3. Communication<br />
  16. 16. 3. Communication<br />
  17. 17. 3. Communication<br />
  18. 18. 3. Communication<br />
  19. 19. 3. Communication<br />dance signals<br />round dance<br />6m<br />
  20. 20. 3. Communication<br />dance signals<br />round dance<br />6m<br />6m<br />waggle dance<br />
  21. 21. 3. Communication<br />dance signals<br />round dance<br />6m<br />6m<br />waggle dance<br />6m<br />round dance<br />
  22. 22. 3. Communication<br />Dance languageisambiguous<br />
  23. 23. Forthedancecommunication<br />in order tofunctionthefollowingstepsareimportant:<br />1. The dancerhasfirsttocollecttheinformationitwantsto pass on<br />2. Danceranddancefollower must meeteachother<br />3. Dancer (sender) must pass on theinformation<br />4. Dance follower (receiver) must receivetheinformation<br />5. Dance follower must makeuseoftheinformation<br />
  24. 24. How do danceranddancefollowersmeet?<br />
  25. 25.
  26. 26. Whatarethesignpostsforthedancefloor?<br />
  27. 27. Wax chemistry is highly complex – more than 300 components<br />
  28. 28. 8<br />The antennaof a workerbee<br />
  29. 29.
  30. 30.
  31. 31. How do dance followers detect the dancer <br />in a totally noisy environment?<br />
  32. 32. Karl von Frisch suspected almost 80 years ago: comb vibrations?<br />
  33. 33. Mechanical properties of the comb<br />
  34. 34.
  35. 35. The dancingbeeassender<br />
  36. 36. 270 Hz bursts<br />
  37. 37.
  38. 38. Are the gaps really only passages?<br />
  39. 39. After a few months …<br />
  40. 40. After a few months…<br />
  41. 41. Index<br />Introduction<br />Vision<br />Communication<br />Learning experiments<br />Numerosity discrimination<br />Navigation <br />
  42. 42. 4. Learning experiments<br />Maze learning<br />Proboscis extension response<br />
  43. 43. How can we show that bee can distinguish between waxes?<br />
  44. 44. Ivan Pawlow (1849 – 1936)<br />http://paedpsych.jk.uni-linz.ac<br />
  45. 45. A<br />stimulus<br />response<br />www.regiosurf.net/.../lernen/ kkondit/kkondit.htm<br />
  46. 46. B<br />no reaction<br />Neutral stimulus<br />www.regiosurf.net/.../lernen/ kkondit/kkondit.htm<br />
  47. 47. C<br />response<br />Neutral stimulus <br />+<br />stimulus <br />www.regiosurf.net/.../lernen/ kkondit/kkondit.htm<br />
  48. 48. D<br />response<br />former neutral stimulus<br />www.regiosurf.net/.../lernen/ kkondit/kkondit.htm<br />
  49. 49. Back to the honeybee<br />
  50. 50.
  51. 51. A<br />Proboscis extension response<br />
  52. 52. Wax sample<br />B<br />No spontaneous response<br />
  53. 53. Wax sample<br />C<br />Proboscis extension response<br />
  54. 54. Conditioned proboscis extrension response<br />Wax sample<br />D<br />
  55. 55. Learning thedifference<br />www.regiosurf.net/.../lernen/ kkondit/kkondit.htm<br />
  56. 56. Discriminationlearning in bees<br />Old wax<br />New wax<br />PER<br />no PER<br />
  57. 57. Bees descriminate waxes<br />
  58. 58. Labyrinth lernen<br />58<br />
  59. 59. 4. Learning: Maze navigation<br />Zhang SW, Bartsch K, Srinivasan MV (1996) Maze Learning by Honeybees. Neurobiology of Learning and Memory 66: 267-282.<br />
  60. 60. 4. Learning: face recognition<br />Dyer AG, Neumeyer C, Chittka L (2005) Honeybee (Apismellifera) vision can discriminate between and recognise images of human faces. J ExpBiol 208: 4709-4714.<br />
  61. 61. Index<br />Introduction<br />Vision<br />Communication<br />Learning experiments<br />Numerosity discrimination<br />Navigation <br />
  62. 62. 62<br />
  63. 63. 63<br />
  64. 64. 64<br />
  65. 65. 5. Numerosity discrimination<br />Spatial frequency control<br />Total area control<br />Novel objects<br />Randomized dots<br />Sample & choice different<br />HJ Gross, M Pahl, A Si, H Zhu, J Tautz, SW Zhang (2009) PLoS ONE 4(1): e4263.<br />
  66. 66. Index<br />Introduction<br />Vision<br />Communication<br />Learning experiments<br />Numerosity discrimination<br />Navigation <br />
  67. 67. 6. Navigation<br />Can experienced foragers find back to the hive after blind displacement?<br />If so, which navigational information do they use?<br />M Pahl, H Zhu, J Tautz, SW Zhang (2011) PLoSONE, in press<br />
  68. 68. 6. Navigation<br />M Pahl, H Zhu, J Tautz, SW Zhang (2011) PLoSONE, in press<br />
  69. 69. 6. Navigation<br />64 bit RFID chip<br />Tagged pollen forager<br />M Pahl, H Zhu, J Tautz, SW Zhang (2011) PLoSONE, in press<br />
  70. 70. 6. Navigation<br />M Pahl, H Zhu, J Tautz, SW Zhang (2011) PLoSONE, in press<br />
  71. 71. 6. Navigation<br /><ul><li>Homing rate, homing time and the maximum return distance depend on direction
  72. 72. Global landmarks facilitate homing
  73. 73. Bess could use the entire skyline panorama to find back home</li></ul>M Pahl, H Zhu, J Tautz, SW Zhang (2011) PLoSONE, in press<br />
  74. 74. The end<br />Thank you for your attention!<br />

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