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Publié par | Thesee |
Nombre de lectures | 52 |
Langue | English |
Poids de l'ouvrage | 3 Mo |
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Universität Leipzig, Biology Fakultät Université Victor Segalen Bordeaux2
Max Planck Institute for Evolutionary Ecole doctorale de Sciences Sociales
Anthropology
Thèse en cotutelle
Kooperatives Promotionsverfahren
PhD theses in Primatology
Emmanuelle Normand
Spatial abilities of Wild Chimpanzees
Pan troglodytes verus
Supervisors: Boesch Christophe / Langlais Michel
th
Defence on 11 June 2010
Jury:
1. Bernard N’Kaoua
2. Martin Schlegel
3. Glyn Goodall
4. Klaus Schilberger
Referres:
1. Paul Garber
2. Klaus Zuberbühler
This thesis is based on the following manuscripts
Normand E., Ban D.S. and Boesch C. (2009) Forest chimpanzees (Pan
troglodytes verus) remember the location of numerous fruit trees. Animal Cognition, DOI
10.1007/s10071-009-0239-7
Normand E. and Boesch C. (2009) Sophisticated Euclidean maps in forest
chimpanzees. Animal Behaviour, 77, 1195–1201.
Normand E. and Boesch C. (submitted) Chimpanzees plan in advance to
visit the most attractive resources. Animal Behaviour.
- 2 - SUMMARY
ACKNOWLEDGEMENTS ...................................................................................................... ..... 5
ABSTRACT ....................................................................................... ........ 7
RESUME ......................................................................................... ......... 8
ZUSAMMENFASSUNG ........................................................................... ..... 9
INTRODUCTION ............................................................................................................... ..... 10
1. The socio-ecological intelligence hypothesis .................................. ..... .10............
2. Captive vs. wild animals’ spatial abilities .................................... ....... .11.......
3. Spatial memory of wild primates .......................................... ....... .12.......
4. Long-term spatial memory .......................................................................... .................. .14.....
5. Spatial orientation mechanism ............................................ ........ .14......
6. Spatial abilities of humans ............................................... ........... .17.
a) Development ........................................................ ............. .17
b) Unfamiliar landscape .................................................. .......... .17...
c) The eco-cultural hypothesis ...................................................................... ............... .17.......
d) Sex differences ...................................................... .............. 18
7. Spatial planning abilities ................................................. ............ 18
8. Challenges and interests of this study ..................................... ....... .2.0.......
STUDY SITE AND SPECIE .................................................................................................... .... 21
1. Research area ......................................................... .............. 21
2. Taï Chimpanzees ....................................................... ............ 21
3. Behavioural data collection .............................................. .......... .2.2..
4. The botanic map .......................................................................................... ........................ 24
THESIS OVERVIEW .............................................................................. ..... 25
1. Spatial Memory of Wild Chimpanzees ...................................... ..... .2.5...........
2. Spatial orientation mechanism: Euclidean maps. .............................. .. .2.5................
3. Planning Abilities of Chimpanzees ................................................................ ............... .2.5......
a. Planning the visit to the most attractive resou r.c.e.s.......................... . .2.5..................
b. Planning daily path ................................................... ............ .2.6
CHAPTER 1: Forest chimpanzees (Pan troglodytess ) vererumember the location of numerous fruit
trees ................................................................................................................................ .......... 27
CHAPTER 2: Sophisticated Euclidean maps in fohriemspt acnzees ............................. .4. 6.........
CHAPTER 3: Chimpanzees plan in advance to v ismit otsht eattractive resources .............. ...... 62
CHAPTER 4 Solving the Travel Salesman Problemso cisia la evolution in Forest Chimpanzees 75
Solving the Travel Salesman Problem is a socilault ioenvo in Forest Chimpanzees ............ ...... 75
GENERAL DISCUSSION ......................................................................... .... 85
- 3 - 1. Original study, innovative results ......................................... ......... .8.5....
2. The results of this study ............................................................................... ........................ 85
a) Do chimpanzees know where the productive fruit s traere? .................... .................... 86
b) Do chimpanzees plan visiting their resources ina nacdev? ...................... .8 6......................
3. The implications of this study on the ecologicpaol thyeses ....................... .8.7.................
a) The complexity of the resources’ spatial distriobnu t.i........................... .8.7..................
b) Spatial orientation mechanism ................................................................. ............ .8.7.........
c) Evolution of primates brains and home range s.iz.e. .......................... .8.9....................
4. Implications of this study on the sociological hthyepsoes .......................... .8.9................
a) Group size influence ................................................... ........... .8.9.
b) Sex differences ......................................................................................... ........................ 90
5. Implication for the socio-ecological hypotheses. ............................... ... .9.0..............
6. Future direction on chimpanzees’ spatial cognit.io.n. ............................ .. .9.1................
REFERENCES ..................................................................................... ...... 93
ANNEXE 1: example of distribution of abundants pterceiee s: ..................................... .1.0. 1.......
ANNEXE 2: example of distribution of rare treies :s p.e.c..................................... . 1.0.2....
ANNEXE 3: The tree species selected for the bmotapn i.c.................................... .1 0..3......
- 4 - ACKNOWLEDGEMENTS
I thank the ‘Ministère de la Recherche Scientifique et de l’Enseignement Supérieur ’ and
the ‘Ministère de l’Environnement, des Eaux et Forêts’ of Côte d’Ivoire, the Director of the
“Office Ivoirien des Parcs et Réserves” (OIPR), Col Kahiba Lambert, and the Director of the
OIPR South-West Zone, Cdt Adama Tondossama, for permission to conduct this study. I would
also like to thank the OIPR officers for their constant effort in protecting the Taï National Park.
I would like to express my deepest gratitude to Prof. Christophe Boesch, my supervisor
from the Max Planck Institute in Leipzig, first for allowing me to have this experience at the Taï
Chimpanzee Project, and second for his constant assistance and advice since my Master. This
thesis would not have been possible without his trust. A very special thanks goes out to Michel
Langlais, my supervisor from the School of Cognitive Sciences in Bordeaux, whose expertise,
understanding and patience added considerably to my research.
I would also thank the ‘Centre Suisse de Recherches Scientifiques’ (CSRS) in Abidjan
for their constant availability: I would particularly like to thank Olivier Girardin, Gueladio Cissé
and Bassirou Bonfoh, as well as their respective wives who were all always helpful and cheerful
towards me. All the students and the employees of the CSRS were at all times very welcoming,
transforming my short stays at the centre into unforgettable memories. I address special thanks to
Andres Tschannen and Dorothy Newman for our in-depth resourceful discussion held over many
dinners at the center…
I would like to address special thanks to the many assistants of the Taï Chimpanzee
Project who helped in the data collection for my study. I especially Jonas Tahoo, François Yro
and Jean-Baptiste Mihi Nahan who all helped me achieve the very challenging task of mapping
the trees in the chimpanzees’ territory. I would also like to thank Nestor Gouyan Bah and Nicaise
Oulaï for their help in the data collection on the chimpanzees. I am also very grateful to the other
assistants of the Taï Chimpanzee Project who all added their special touch in making the Taï
forest a real paradise during my stay as well as all the assistants of the Taï Monkey Project and
the “Centre de Recherche en Écologie Tropicale”. I especially thank my friends Yasmin
Moëbius, Cristina Gomes and Sabrina Locatelli who shared this wonderful time with me in the
for