zoo111solo - ANTHROPOLOGY 111 THE LOS ANGELES ZOO PRIMATE...

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A NTHROPOLOGY 111 zoo111solo.doc Page 1 of 1 T HE L OS A NGELES Z OO P RIMATE P ROJECT —P ART 1 What follows is a walking tour of the primates at the Los Angeles Zoo. The Los Angeles Zoo is laid out by continental area, so the primate exhibits are scattered throughout the zoo. Be sure that you OBTAIN A MAP OF THE ZOO AT THE ENTRANCE —you’ll need it. The numbers refer to the exhibit numbers on the map. Move along the pathway from the zoo entrance past the Shuttle Station. Soon the main path bifurcates. Take the right hand path up the hill. You will enter the South American section through an opening in exhibit area 76. ! New World Monkeys —We will begin with the New World monkeys located in the South American section of the zoo. In exhibit area 75 you will see 3 species of New World monkeys. All of these particular species have prehensile tails, although the capuchin monkey’s tail is not as prehensile as the others. These species are the black-handed spider monkey, black howler monkey, and crested capuchin monkey. The spider monkeys are usually very active and easy to observe since they are not too small, are light in color, and frequently hang on the wire in front of the cage. They are characterized by a number of features inncluding: ! Presence of a rhinarium, a hairless area at the end of an elongated muzzle or snout, associated with the sense of smell. The rhinarium has a median groove known as a philtrum that is attached to the gum ! Presence of a grooming claw on the second toe. There are other features that we will examine when we look at the skull and dentition. Some examples can be seen on pages 12-13 in the Atlas. Spider monkeys are very active and moving by hanging under a branch and swinging by its arms with the help of its prehensile tail. This particular pattern is called New World semibrachiation. The spider monkey also possesses two unusual features that are not found in most other monkeys. In the female, the clitoris is elongated and easily observed. And the hand has no thumb. The howler monkey is known by its special call, which is made possible by an enlarged larynx. It is also characterized by sexual dichromatism. This means that the male and female are different colors, which makes the sexes very easy to tell apart. The howler monkeys are not as active as the spider monkeys. This is typical of leaf-eaters since leaves, while plentiful, provide a limited amount of energy. In contrast, the spider monkey eats a wide range of foods, including fruits that are very high in sugars that provide a great deal of energy. There are many species of capuchin monkeys. The name is derived from a species that has a patch of dark fur on the top of the head that looks like the skullcap worn by the Capuchin monks. They are more quadrupedal than the spider and howler monkeys. They have a prehensile tail, but it is not as useful in locomotion. These are very intelligent primates and are often used in entertainment venues. Continuing your walk you will next come to exhibit 74. These are the golden lion tamarins. Because they
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zoo111solo - ANTHROPOLOGY 111 THE LOS ANGELES ZOO PRIMATE...

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