Factors underlying party size differences between chimpanzees and bonobos: a review and hypotheses for future study Takeshi Furuichi Review Article 08 April 2009 Pages: 197 - 209
Estimation of African apes’ body size from postcranial dimensions Markku NiskanenJuho-Antti Junno Original Article 17 February 2009 Pages: 211 - 220
Buccal dental microwear variability in extant African Hominoidea: taxonomy versus ecology Jordi GalbanyFerran EstebaranzAlejandro Pérez-Pérez Original Article 19 March 2009 Pages: 221 - 230
Vocalisations of wild common marmosets are influenced by diurnal and ontogenetic factors Bruna Martins BezerraAntonio da Silva SoutoLewis George Halsey Original Article 18 February 2009 Pages: 231 - 237
Interspecific primate associations in Amazonian flooded and unflooded forests Torbjørn HaugaasenCarlos A. Peres Original Article 26 February 2009 Pages: 239 - 251
Behavioral and hormonal response of common marmosets, Callithrix jacchus, to two environmental conditions Maricele Nascimento BarbosaMaria Teresa da Silva Mota Original Article 11 March 2009 Pages: 253 - 260
Geographic distribution and population characteristics of the endangered white-fronted spider monkey (Ateles marginatus) on the lower Tapajós River in central Brazilian Amazonia André L. RavettaStephen F. Ferrari Original Article 12 May 2009 Pages: 261 - 268
Tool use in wild spider monkeys (Ateles geoffroyi) Stacy M. LindshieldMichelle A. Rodrigues Short Communication 16 April 2009 Pages: 269 - 272
Hand-clapping as a communicative gesture by wild female swamp gorillas Ammie K. KalanHugo J. Rainey Short Communication 17 February 2009 Pages: 273 - 275
Two cases of mother–infant cannibalism in orangutans David Fenwick DellatoreCorri D. WaittIvona Foitova Short Communication 26 March 2009 Pages: 277 - 281
Nobuo Masataka (Ed.): The origins of language, unraveling evolutionary forces Tobias Riede Book Review 04 March 2009 Pages: 283 - 284
Bradley J. Adams and John E. Byrd (eds.): Recovery, analysis, and identification of commingled human remains Osamu Kondo Book Review 11 March 2009 Pages: 285 - 286
Richard Wrangham, Elizabeth Ross (eds.): Science and conservation in African forests: the benefits of long-term research Noko Kuze Book Review 19 March 2009 Pages: 287 - 289
Sex differences in play behavior in juvenile tufted capuchin monkeys (Cebus apella) Annika PauknerStephen J. Suomi Erratum 17 June 2009 Pages: 291 - 291