Now showing items 21-40 of 182

    • Comparative Chewing Efficiency in Mammalian Herbivores 

      Fritz, Julia; Hummel, Jürgen; Kienzle, Ellen; Arnold, Christian; Nunn, Charles Lindsay; Clauss, Marcus (Nordic Ecological Society, 2009)
      Although the relevance of particle size reduction in herbivore digestion is widely appreciated, few studies have investigated digesta particle size across species in relation to body mass or digestive strategy. We investigated ...
    • Comparative Cognitive Development and Endocrinology in Pan and Homo 

      Wobber, Victoria Elizabeth (2012-08-23)
      Key insights into the evolutionary origins of human social behavior can be gained via study of our closest living relatives, bonobos (Pan paniscus) and chimpanzees (Pan troglodytes). Despite being equally related to humans, ...
    • Comparative Feeding Ecology of Two Chimpanzee Communities in Kibale National Park (Uganda) 

      Potts, Kevin B.; Watts, David P.; Wrangham, Richard W. (Springer Verlag, 2011)
      Several recent studies have documented considerable intraspecific and intrapopulation ecological variation in primates. However, we generally lack an understanding of how such variability may be linked to concomitant ...
    • Comparing Neanderthal and Modern Human Long Bone Loading History from Cross-Sectional Geometry 

      Lieberman, Daniel; Polk, John D.; Demes, Brigitte (John Wiley & Sons, 2003)
      We evaluate here efforts to compare archaic and modern human limb loading from long bone cross sectional. Recent studies find that cross sectional properties (I, J, Z) calculated from second moments of area (SMA) are similar ...
    • Comparison of Heart Rate Monitor and Accelerometer for Measuring Energy Expenditure Under Field Conditions 

      Reiches, Meredith W.; Sharrock, Katherine C.; Moore, S.; Prentice, Andrew M.; Ellison, Peter (John Wiley & Sons, 2009)
      Life history models predict differential energy allocation patterns among growth, maintenance, and reproduction under varying ecological conditions. The assessment of energy expenditure is one important tool in quantifying ...
    • Comparisons of Limb Structural Properties in Free-Ranging Chimpanzees From Kibale, Gombe, Mahale and Taï Communities 

      Carlson, K.J.; Wrangham, Richard W.; Muller, M.N.; Sumner, D.R.; Morbeck, M.E.; Nishida, T.; Yamanaka, A.; Boesch, C. (Springer, 2010)
      Structural characteristics of limbs bones provide insight into how an animal dynamically loads its limbs during life. Cause-and-effect relationships between loading and the osteogenic response it elicits are complex. In ...
    • Complex Interactions Between Estrogen, Strain, and Exercise-Induced Periosteal Bone Growth 

      Devlin, Maureen; Lieberman, Daniel (John Wiley & Sons, 2007)
      Understanding the relationship between bone strain and bone growth is critical for interpreting variations in skeletal robusticity. Recently we presented a model for interactions between estrogen, strain, and periosteal ...
    • The context of female dispersal in Kanyawara chimpanzees 

      Stumpf, RM; Wrangham, Richard W.; Emery Thompson, M; Muller, M.N. (Brill Academic Publishers, 2009)
      In most social mammals, members of either one sex or both leave their natal group at sexual maturity. In catarrhine primates, male emigration is the predominant pattern. Female philopatry facilitates cooperation among kin, ...
    • Contextes et âge des nouveaux restes dentaires humains du Pléistocène moyen de la carrière Thomas I a Casablanca (Maroc) 

      Raynal, J. P.; Sbihi-Alaoui, F. Z.; Mohib, A.; El Graoui, M.; Lefèvre, D.; Texier, J. P.; Geraads, D.; Hublin, J. J.; Smith, Tanya; Tafforeau, P.; Zouak, M.; Grün, R.; Rhodes, E. J.; Eggins, S.; Daujeard, C.; Fernandes, P.; Gallotti, R.; Hossini, S.; Schwarcz, H. P.; Queffelec, A. (Persee Scientific Journals, 2011)
      Un outillage lithique acheuléen, une riche faune du Pléistocène moyenet quatre dents d’hominidés ont été extraites du remplissage de la cavité dela carrière Thomas I, célèbre depuis la découverte en 1969 d’une hémi-mandibule ...
    • Control and Function of Arm Swing in Human Walking and Running 

      Pontzer, Herman; Holloway, John H. III; Raichlen, David A.; Lieberman, Daniel Eric (The Company of Biologists, 2009)
      We investigated the control and function of arm swing in human walking and running to test the hypothesis that the arms act as passive mass dampers powered by movement of the lower body, rather than being actively driven ...
    • Cooking and the Human Commitment to a High-quality Diet 

      Carmody, Rachel Naomi; Wrangham, Richard W. (Cold Spring Harbor Laboratory Press, 2009)
      For our body size, humans exhibit higher energy use yet reduced structures for mastication and digestion of food compared to chimpanzees, our closest living relatives. This suite of features suggests that humans are adapted ...
    • Counting in oogenesis 

      Green, Delbert; Sarikaya, Didem Pelin; Extavour, Cassandra G. (Springer Science + Business Media, 2011)
      The determination of a precise number of cells within a structure and of a precise number of cellular structures within an organ is critical for correct development in animals and plants. However, relatively little is known ...
    • Cross-Cultural Sex Differences in Post-Conflict Affiliation following Sports Matches 

      Benenson, Joyce Frances; Wrangham, Richard W. (Elsevier BV, 2016)
      The nature of ancestral human social structure and the circumstances in which men or women tend to be more cooperative are subjects of intense debate. The male warrior hypothesis proposes that success in intergroup contests ...
    • Dental development of the Taï Forest chimpanzees revisited 

      Smith, Tanya; Smith, B.H.; Reid, D.J.; Siedel, H.; Vigilant, L.; Hublin, J.J.; Boesch, C. (Elsevier BV, 2010)
      Developmental studies consistently suggest that teeth are more buffered from the environment than other skeletal elements. The surprising finding of late tooth eruption in wild chimpanzees (Zihlman et al., 2004) warrants ...
    • Dental evidence for ontogenetic differences between modern humans and Neanderthals 

      Smith, Tanya; Tafforeau, P.; Reid, D. J.; Pouech, J.; Lazzari, V.; Zermeno, J. P.; Guatelli-Steinberg, D.; Olejniczak, A. J.; Hoffman, A.; Radovcic, J.; Makaremi, M.; Toussaint, M.; Stringer, C.; Hublin, J.-J. (Proceedings of the National Academy of Sciences, 2010)
      Humans have an unusual life history, with an early weaning age, long childhood, late first reproduction, short interbirth intervals, and long lifespan. In contrast, great apes wean later, reproduce earlier, and have longer ...
    • Dental Evidence from the Aterian Human Populations of Morocco 

      Hublin, Jean-Jacques; Verna, Christine; Bailey, Shara; Smith, Tanya; Olejniczak, Anthony; Sbihi-Alaoui, Fatima Z.; Zouak, Mehdi (Springer-Verlag, 2012)
      The Aterian fossil hominins represent one of the most abundant series of human remains associated with Middle Stone Age/Middle Paleolithic assemblages in Africa. Their dates have been revised and they are now mostly assigned ...
    • Dental tissue proportions in fossil orangutans from mainland Asia and Indonesia 

      Smith, Tanya; Bacon, Anne-Marie; Demeter, Fabrice; Kullmer, Ottmar; Nguyen, Kim Thuy; de Vos, John; Wei, Wang; Zermeno, John P.; Zhao, Lingxia (Asian-Australian Association of Paleoanthopologists, 2011)
      Orangutans (Pongo) are the only great ape genus with a substantial Pleistocene and Holocene fossil record, demonstrating a much larger geographic range than extant populations. In addition to having an extensive fossil ...
    • Developmental Plasticity in a Biocultural Context 

      Ellison, Peter (John Wiley & Sons, Ltd., 2009)
    • Developmental variation of the primate dentition: The 2011 AAPA symposium in honor of Don Reid 

      Smith, Tanya; Guatelli-Steinberg, Debbie (Wiley-Blackwell, 2011)
    • Diminished Schwann Cell Repair Responses Underlie Age-Associated Impaired Axonal Regeneration 

      Painter, Michio Wendell; Brosius Lutz, Amanda; Cheng, Yung-Chih; Latremoliere, Alban; Duong, Kelly; Miller, Christine; Posada, Sean; Cobos, Enrique J.; Zhang, Alan; Wagers, Amy Jo; Havton, Leif A.; Barres, Ben; Omura, Takao; Woolf, Clifford (Elsevier BV, 2014)
      The regenerative capacity of the peripheral nervous system declines with age. Why this occurs, however, is unknown. We demonstrate that 24-month-old mice exhibit an impairment of functional recovery after nerve injury ...