Chair: Toshisada NISHIDA
Hunting, tools and Sociality: A new evolutionary scenario for chimpanzee and human
Carel van SCHAIK
Evolution of material culture: insights from orangutans
Intelligence and culture in chimpanzees
Chair: Shozo KOJIMA
E. Sue SAVAGE-RUMBAUGH
Lessons of bonobo apes: language and culture
Words and pictures: use of symbolism by two lowland gorillas.
Moving our message beyond the academy: the significance of understanding chimpanzee cognition and its role in conservation.
COGNITION & BEHAVIOR
Dora BIRO and Tetsuro MATSUZAWA
The concept of number in the chimpanzee (Pan troglodytes): The introduction of "Zero"
Nobuyuki KAWAI and Tetsuro MATSUZAWA
"The magical number 5" in a chimpanzee
Jonathan GULLEDGE, David WASHBURN and Duane RUMBAUGH
Evidence for rhesus monkeys' concept of number
Scale model comprehension by chimpanzees
Discrimination and categorization of pictures of natural objects by chimpanzees (Pan troglodytes)
Satoshi HIRATA and Naruki MORIMURA
Naive chimpanzees' timing of observation of experienced conspecifics in a honey-fishing task
Maura CELLI, Masaki TOMONAGA, Toshifumi UDONO, Migaku TERAMOTO, and Kunitoshi NAGANO
Learning processes in a tool using task by captive chimpanzees (Pan troglodytes)
Masako MYOWA-YAMAKOSHI and Tetsuro MATSUZAWA
Imitation of intentional manipulatory actions in chimpanzees (Pan troglodytes)
Shoji ITAKURA, Mari KUMASHIRO and Toshifumu UDONO
Visual attention following in chimpanzees: A preliminary study
Claudia SOUSA and Tetsuro MATSUZAWA
Food preference measured by tokens as exchange tools in chimpanzees
Food sharing and underlying reciprocity among chimpanzees
Sumirena SEKINE and Hideko TAKESHITA
Development of social play in captive chimpanzees: preliminary observation in Tama Zoological Park, Tokyo
Hideko TAKESHITA, Shinsuke TANAKA, Toshifumi UDONO, Migaku TERAMOTO and Ikuo HAYASAKA
Development in play of building blocks in chimpanzee infants: piling up and lining up
Makiko UCHIKOSHI, Toshiaki MIZUTANI and Tetsuro MATSUZAWA
Behavioral development of gibbon infants (Hylobates agilis)
K. HASHIYA, Satoru ISHIKAWA, Kazuo FUJITA and Masaki TOMONAGA
The "initial knowledge" about the correspondence of auditory-visual events in macaque infants.
Chair: Naruya SAITOU
DNA sequence variation among apes
C.-K. James SHEN
Genomic evolution of primates
Chair: Yukimaru SUGIYAMA
New finding s and models of gibbon social organization, and parallels with humans
Social flexibility of gorillas: some implications for the origin of human family
On human bonding: The search for a unified theory of ape evolutionary ecology and hunter-gatherer social organization
Chair: Osamu TAKENAKA
Evolution of ABO and Rh blood group genes in primates
Genetic variability among chimpanzee subspecies and the implications for biomedical research
Great ape aging project: contributions to evolutionary neurobiology
SOCIOLOGY & ECOLOGY
Chie HASHIMOTO, Takeshi FURUICHI and Yasuko TASHIRO
Diversity in forest types and habitat use by chimpanzees in the Kalinzu Forest, Uganda
Takeshi FURUICHI, Chie HASHIMOTO and Yasuko TASHIRO
Seasonal changes in habitat use by chimpanzees in the Kalinzu Forest, Uganda: Application of marked nest count method.
Yasuko TASHIRO, Takeshi FURUICHI and Chie HASHIMOTO
A preliminary report of the feeding ecology of chimpanzees in the Kalinzu Forest Reserve, Uganda: fecal analysis and habitat use.
Yuji TAKENOSHITA and Shigeru SUZUKI
Seasonal variations in the bed group size of the chimpanzee (Pan troglodytes) in the Petit Loango Reserve, Gabon.
Feeding selectivity in leaves of wild chimpanzees, Bossou, Guinea: the role of phytochemistry.
Tatyana HUMLE and Tetsuro MATSUZAWA
Investigation into the cultural and ecological factors leading to differences in behaviour among two recently isolated neighbouring populations of West African chimpanzees (Pan troglodytes verus)
Gen YAMAKOSHI, Hiroyuki TAKEMOTO, Tetsuro MATSUZAWA and Yukimaru SUGIYAMA
Research history and conservation status of chimpanzees at Bossou, Guinea
Kanyunyi A. BASABOSE
Influence of sympatric gorillas on chimpanzee's nesting behavior in the Kahuzi-Biega National Park, Democratic Republic of Congo
A. MATSUMOTO-ODA, M. KASAGULA and D. SPRAGUE
Preliminary study of feeding competition between baboons and chimpanzees in the Mahale Mountains National Park, Tanzania
"Bililingi na kati ya Zamba"
Shadows in the Forest: Bonobo Lore from the Congo
Orangutan outreach: improved communication through curriculum and educational CD-ROM
Ecology of the black-crested gibbon (Hylobates concolor) in the Ailao Mt.Reserve, Yunnan, China
U. SUWANVECHO and W.Y. BROCKELMAN
Interspecific relations between two gibbon species (H. lar and H. pileatus) at Khao Yai National Park, Thailand
The effects of forest fires on the family of Bornean gibbons.
J. WAKIBARA, M. MATSUBARA and G. HANYA
Geophagia amongst Japanese monkeys (Macaca fuscata)
Chair: Juichi YAMAGIWA
A model of biogeographical journey from proto-pan to Pan paniscus
Biology of extinction and persistence in apes compared to monkeys
Chair: Hidemi ISHIDA
New perspectives on the phylogenetic relationships of the earliest Hominoids
Are Human beings apes, or are apes people too?
Hominid evolution and the evolution of the environment
Chair: Takayoshi KANO
Genito-genital-rubbing: a display of differences in social status
Factors influencing sexual behavior and reproductive patterns in chimpanzees
Demographic influences on the behavior of male chimpanzees
WELFARE & ENRICHMENT
Masaki TOMONAGA, Juri SUZUKI, Satoshi OHKURA, Minoru NAKAMURA and Tsuneyuki ABE
Are cognitive experiments stressful works for the chimpanzee (Pan troglodytes)?: relationship between performance and physiological factors during cognitive experiments.
Naruki MORIMURA, Kouki HUWA and Gen'ich IDANI
Training for the environmental enrichment.
Tomomi OCHIAI and Tetsuro MATSUZAWA
Environmental enrichment for captive chimpanzees: introduction of two climbing structures 4m and 8m high
Miya HAMAI and Masao SATO
Nutritional analysis of plant species used as browse for captive primates at Japan Monkey Center
The hominoid digestive strategy
S. KAWAMURA, M. HIRAI and O. TAKENAKA
Red/green visual pigment gene organization of owl monkeys and common marmosets
M. INOUE-MURAYAMA, Y. NIIMI, O. TAKENAKA and Y. MURAYAMA
Evolution of personality-related genes in primates
J. RILLING, C. KILTS, S. WILLIAMS, J. KELLEY, M. BERAN, M. GIROUX, J. HOFFMAN, S. SAVAGE-RUMBAUGH and D. RUMBAUGH
Functional Neuroimaging of Linguistic Processing in Chimpanzees
H. KIM, O. TAKENAKA, B. HYUN, J. CHOI and T. CROW
Phylogeny and evolution of retro-elements in humans and apes
Evaluation of the phylogenetic distances between alpha satellite DNA
A Study plan of gene flow between Chimpanzee group at Bossou and others.
Characteristics of the growth of chimpanzee and the implications for its evolution.
Comparative Study of Basicranial Morphology among Catarrhines
Keiko SHIMIZU, Toshifumi UDONO, Fusako MITSUNAGA and Motoharu HAYASHI
Assessment of reproductive status by using urinary hormone evaluation in great apes
Motoharu HAYASHI, Mariko ITOH, Keiko SHIMIZU, Fusako MITSUNAGA and Koji OHIRA
Neuronal distribution and BDNF immunoreactive cells in the cerebral cortex of a fetal chimpanzee
Chair: Tetsuro MATSUZAWA
Linda VAN ELSACKER
Present and future bonobo (Pan paniscus) research at the Royal Zoological Society of Antwerp (Belgium)
The apes and us: brain and emergent processes