The primate pattern Essay Example | Topics and Well Written Essays - 500 words

The primate pattern - Essay Example There are various hypotheses that attempt to explicate the original evolutionary divergence of the privates but the three hypotheses are the main in the evolutionary process. The Arboreal Hypothesis was advanced by the Elliot Smith and was later supported by Wood Jones. The Elliot Smith hypothesized that the ancient primates were terrestrial animals that at the end came to dwell in arboreal habitant because of the selective pressure divergent from their original terrestrial way of life (Srivastava 18). In the arboreal environments, the primate vision and the sense of touch became greater senses compared to the sense of smell that led to developing new methods of adaptation essential in the arboreal settings. The functional arboreal hypothesis lacked supportive and clear evidence to explain how primate adapted their terrestrial style into the arboreal environment; therefore, criticism led to evolution of other alternative hypotheses. Cartmill introduced alternative hypothesis called Visual Predation that would explicate the progression of primates. He demonstrated that the morphological pattern of the primates do not indicate arboreal adaption as shown by Smith, rather adaptation to feeding mode to bushy forest in the ground where they hunted for fruits and insects. Therefore, it is clear that little primitive, mainly insectivorous and ancient primate were capable to reach for the branches using their prehensile limbs and catch prey with a forelimb while judging the way with close-set eyes (Ravosa and Dagosto 12). Consequently, it is comprehensible from that ancient primate relied deeply on the sense of vision that why the theory is known as visual predation hypothesis. Similar to the first hypothesis, the Cartmill hypothesis was criticized because it was yet to be proven and the primate pre-adapted for the arboreal living. However, it is harmless to point out that the arboreal and visual predations are not mutu ally exclusive