By David J. Chivers (auth.), Hilary O. Box (eds.)
This e-book issues a number of the ways in which primates reply to environmental switch. through learning those styles of responsiveness we not just achieve valuable wisdom concerning the structural, physiological and behavioural propensities of alternative species, but additionally gather very important info in relation to problems with modern situation, resembling conservation and the administration of animals within the wild in addition to in numerous types of captivity. for instance, there's becoming challenge between biologists and conser vationists in regards to the impression of habitat destruction, reminiscent of logging, at the health and survival of untamed primates. there's additionally elevated wisdom of the necessity to enhance the care of primates in zoos and laboratories, together with the enrichment of captive environments. extra, simply because progressively more primate species are becom ing endangered, wisdom in their responsiveness to new environ ments is a necessary requirement for potent breeding programmes in captivity, and for the translocation and rehabilitation of species within the wild. In thought, reports of many heavily comparable species are required with a purpose to examine proper evolutionary procedures, in addition to to enhance practical hypotheses in regards to the adaptive value of varied organic propensities and their interrelationships within the brief and longer terms.
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Extra info for Primate Responses to Environmental Change
Altmann, 1979; Dunbar, 1986; Lee, 1988; Datta, 1989). , 1987). Thus attention has been focused on life history variables in a number of primate studies (reviewed by Richard, 1985; see also Dunbar, 1988). How do such behavioural and evolutionary changes arise? g. Mori, 1979; Lee, 1987a; Fa and Southwick, 1988). A consistent pattern emerges from these comparisons. , 1988). g. J.
Chivers and Hladik (1980) derived gut specialization indices for absorptive area and for fermenting volume. 1). 11a) -5 +11 +16 +22 +15 +40 +31 +40 +45 +85 +82 +53 (the area index corresponding more closely to the predominance of animal matter in the diet). e. with a particular blend of foliage, animal matter and fruit). A confounding variable is the passage time of digesta; it is difficult to determine this and little information is available. Gut compartments can be smaller if passage time is longer, and vice versa, without difference in digestive ability.
Furthermore, while crushing and grinding surfaces increase disproportionately with body size, shearing blades decrease relatively in length (Kay, 1975). <: . Q 0 -1 (a) 0 2 3 4 log. 4 (a) Areas of crushing and grinding surfaces, and lengths of shearing blades (cristid obliqua) plotted against body size (from Kay, 1975). (b) First two coordinates of a principal coordinates analYSis of molar dimensions on noncercopithecoid primates (all standardized for body size, showing insectivores (1-5), folivores (6-15) and frugivores (16-22).