Peter W Lucas
Affiliation: University of Hong Kong
- Colour cues for leaf food selection by long-tailed macaques (Macaca fascicularis) with a new suggestion for the evolution of trichromatic colour visionP W Lucas
Department of Anatomy, University of Hong Kong, China
Folia Primatol (Basel) 69:139-52. 1998..It is possible that trichromatic vision in catarrhine primates may have originally evolved for the detection of red coloration in the leaves of shade-tolerant tropical plants, enabling the better exploitation of a food resource...
- Field kit to characterize physical, chemical and spatial aspects of potential primate foodsP W Lucas
Department of Anatomy, University of Hong Kong, PR China
Folia Primatol (Basel) 72:11-25. 2001..Measurements are made of colouration (spectrum of non-specular reflection) and many mechanical, chemical and spatial properties of primate foods...
- Evolution and function of routine trichromatic vision in primatesPeter W Lucas
Department of Anatomy, University of Hong Kong, 21 Sassoon Road, Hong Kong, People s Republic of China
Evolution 57:2636-43. 2003..There were no similar differences for fruits although red-greenness may sometimes be important in close-range fruit selection. These results suggest that routine trichromacy evolved in a context in which leaf consumption was critical...
- Functional ecology and evolution of hominoid molar enamel thickness: Pan troglodytes schweinfurthii and Pongo pygmaeus wurmbiiErin R Vogel
Department of Anthropology, 1156 High Street, University of California Santa Cruz, CA 95064, United States
J Hum Evol 55:60-74. 2008..These data, which are among the first reported for hominoid primates, fill an important empirical void for evaluating the mechanical plausibility of putative hominin food objects...
- Comparative use of color vision for frugivory by sympatric species of platyrrhinesKathryn E Stoner
Centro de Investigaciones en Ecosistemas, Universidad Nacional Autonoma de Mexico, Morelia, Michoacan
Am J Primatol 67:399-409. 2005..We suggest that routine trichromacy may be advantageous for other foraging tasks, such as feeding on young leaves...
- Sugar concentration of fruits and their detection via color in the Central American spider monkey (Ateles geoffroyi)Pablo Riba-Hernandez
Escuela de Biologia, Universidad de Costa Rica, San Jose
Am J Primatol 67:411-23. 2005..Our study documents a trichromatic foraging advantage in terms of fruit quality, and suggests that trichromatic color vision is advantageous over dichromatic color vision for detecting sugar-rich fruits...
- Significance of color, calories, and climate to the visual ecology of catarrhinesNathaniel J Dominy
Department of Ecology and Evolution, University of Chicago, Chicago, Illinois, USA
Am J Primatol 62:189-207. 2004..We also found that primate biomass is higher in seasonal sites. We conclude that these findings are consistent with the notion that routine trichromatic vision evolved in a context where seasonal folivory was pivotal to survival...
- A brief review of the recent evolution of the human mouth in physiological and nutritional contextsPeter W Lucas
Department of Anthropology, George Washington University, 2110 G Street NW, Washington, DC 20052, USA
Physiol Behav 89:36-8. 2006..A brief review of the literature suggests several adaptations of the mouth can be interpreted to support this. All probably enhance the efficiency of the physical treatment of food in the mouth...
- Novel way of measuring the fracture toughness of leaves and other thin films using a single inclined razor bladeKai Yang Ang
Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, Singapore 117543, Republic of Singapore
New Phytol 177:830-7. 2008..It was also able to overcome some of the difficulties of conventional double-bladed cutting tests, especially the estimation of energy expenditure that is extraneous to the work of cutting...
- Mechanics and chemistry of rain forest leaves: canopy and understorey comparedNathaniel J Dominy
Department of Ecology and Evolution, University of Chicago, 1101 East 57th Street, Chicago, IL 60637, USA
J Exp Bot 54:2007-14. 2003..The implication of these results to the resource availability hypothesis, which proposes trade-offs between physiology and defences against herbivory, is discussed...
- Inferences regarding the diet of extinct hominins: structural and functional trends in dental and mandibular morphology within the hominin cladePeter W Lucas
Department of Anthropology, George Washington University, Washington, DC, USA
J Anat 212:486-500. 2008..Specifically, we show how thick enamel can protect against the generation and propagation of cracks in the enamel that begin at the enamel-dentine junction and move towards the outer enamel surface...
- In tropical lowland rain forests monocots have tougher leaves than dicots, and include a new kind of tough leafNathaniel J Dominy
Department of Anthropology, University of California, 1156 High St, Santa Cruz, CA 95064, USA
Ann Bot 101:1363-77. 2008..Of 15 monocot families with >100 species in TLRF, eight have notably high densities of fibres in the lamina so that high values for toughness are expected...
- Monocot leaves are eaten less than dicot leaves in tropical lowland rain forests: correlations with toughness and leaf presentationPeter J Grubb
Plant Sciences Department, University of Cambridge, Downing Street, Cambridge CB2 3EA, UK
Ann Bot 101:1379-89. 2008....