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How do new world monkeys and old world monkeys differ?

Categories: AnimalsWorld

Some specimens of the New World also feed on different gums in times of fruit scarcity and insect dearth. Special adaptations of marmoset incisors and guts, for example, allow them to supplement their diets with just various types of gum (Ferrari, et al. , 1996, cited by Strier, 2007 p. 57). To further illustrate this, in the pygmy marmoset, as much as eighty percent of its feeding time is devoted to a range of exudates, and the remainder to animal prey solely, such as tiny insects and amphibians (Yi?? pez, et al.

, 2005, cited by Strier, 2007 p. 57).

Locomotion, stationary posture and size Marmosets and tamarins, members of the platyrrhine family of Callitrichidae, have also developed claws on their big toes, “an adaptation that enables them to cling to the sides of large tree trunks to feed on gums, saps” (Fleagle 1999, 160) “and cryptic prey on trunks and in tree holes” (Ibid. p. 172). In terms of the locomotion of New World monkeys, being relatively more arboreal than the catarrhines, some leap from tree to tree, some travel on all fours along the branches, and for larger species, such as the Red-Faced Spider Monkey, or the Red Howler Monkey, suspensory postures have been documented (Ibid.

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Some spider monkeys even habitually use their “tails and arms as pendulums to swing through the canopy” (Strier 2007, 57). While these platyrrhines use their tails to support their own bodies, to help them keep their balance as they move along branches, and even carry food items behind them (Ibid. ), catarrhines lack any form of prehensility in their tails (Stanford, Allen and Anti?? n 2009, 181).

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They do, however, have sitting pads, otherwise known as ischial callosities (Steudel 1981), around the tail region, that support the animals while they sit in trees, or on the ground, as they feed, rest, or sleep (Stanford, Allen and Anti??n 2009, 182).

More arboreal catarrhines would be found sitting on branches as opposed to suspending by their limbs like the platyrrhines (Fleagle 1999, 220). Many catarrhines are terrestrial, like baboons and patas monkeys (Wilson, et al. 1996, 29). Most Old World monkeys are also larger in body weight than the New World ones, especially male baboons (Papio anubis), which typically have a body weight of 23. 5kg, nearly four times the body weight of the average spider monkey (Ateles geoffroyi), 6. 00kg (Stanford, Allen and Anti?? n 2009, 440). Reproduction.

In terms of sexual anatomy, female catarrhines have prominent swelled sexual skin around the anus and vagina during the estrous cycle (Stanford, Allen and Anti?? n 2009). While catarrhines rely more on visual displays of sexuality, platyrrhines rely on scent to mark territory (Rowell 1972, 107). One example of this is when female spider monkeys will use their urine, maybe sometimes with glandular secretions, to attract males and signal that they are ready to mate (Ibid. ). Platyrrhines have relatively longer life histories, due to their slow reproductive rates.

Old World monkeys have a gestation period lasting five to six months, while New World monkeys are pregnant for seven to nine months (Rowell 1972, 122). While muriquis, spider monkeys and woolly monkeys wait, on average, three years between births, Old World monkeys typically give birth once every year (Nishimura, 2003; Strier, 1999, cited in Strier, 2007 p. 57). Social groupings New World monkeys have diverse social organizations, from monogamous groups demonstrated in titi, saki and night monkeys, to large groups of intergendered spider monkey societies.

Also, howler monkeys live in single-male groups, while capuchins and squirrel monkeys live in complex groups of several adults (Ibid. p. 172-3). In contrast, Old World monkey monogamy, or intergendered groupings, are rare, and most groups consist of single-male or multi-male, female kin-bonded societies (Fleagle 1999, 220). Evolutionary success Although they all share similar social orders, these catarrhine groups inhabit a wider range of latitudes, climates and vegetative regions than the platyrrhines (Fleagle 1999, 186).

This may be due to their terrestrial locomotor potential, their manipulative abilities, and higher intelligence (Stanford, Allen and Anti?? n 2009, 440), and the fact that they can access a wider range of foods and environments. They are also more prolific breeders (Fleagle 1999, 220). While the platyrrhines are much more assorted in their social systems, they occupy a narrower variety of niches than the catarrhines (Stanford, Allen and Anti?? n 2009, 182), and due to this, it can be supposed that the Old World monkeys are evolutionarily more successful.

Bibliography Campbell, Neil A. , Jane B. Reece, Martha R. Taylor, Eric J. Simon, and Jean L. Dickey. Biology: Concepts & Creations (Sixth Edition). San Francisco: Pearson Education, Inc. , 2009. Fleagle, John G. Primate Adapatation and Evolution. San Diego: Academic Press, 1999. Rowell, Thelma. The Social Behaviour of Monkeys. London: Cox & Wyman Ltd, 1972. Stanford, Craig, John S. Allen, and Susan C. Anti?? n. Biological Anthropology: The Natural History of Humankind (Second Edition). Upper Saddle River: Pearson Education, Inc. , 2009. Steudel, K.

“Functional Aspects of Primate Pelvic Structure: A Multivariate Approach. ” (American Journal of Physical Anthropology) 55, no. 399-410 (1981). Strier, Karen B. Primate Behavioral Ecology (Third Edition). Boston: Pearson Education, Inc. , 2007. Swindler, Daris R. Primate Dentition: An Introduction to the Teeth of Non-human Primates. Cambridge: Cambridge University Press, 2002. Wilson, Don E. , F. Russell Cole, James D. Nichols, Rasanayagam Rudran, and Mercedes S. Foster, . Measuring and Monitoring Biological Diversity. Washington: Smithsonian Institution Press, 1996.

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How do new world monkeys and old world monkeys differ?. (2020, Jun 02). Retrieved from

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