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Spider Monkey description.

Extracts from this document...


Geoffroy's Spider Monkey Presented by: Spider Monkey Kingdom Animalia Phylum Chordata Class Mammalia Order Primates Family Cebidae Subfamily Atelinae I. Introduction * Spider Monkey description New world monkeys, such as the Spider monkey are more primitive than are old world monkeys. Their brains are less complex, their thumbs are not opposable and their nostrils are further apart. They have slender bodies and limbs with long narrow hands. The black-handed spider monkey has a light to medium brown body and darker limbs with the hands and feet usually black in color. Their tail is sometimes longer than their body. The Spider monkey has a prehensile tail that is muscular and tactile and is used as an extra hand. Both the underside and tip of the tail are used for climbing and grasping. When swinging by the tail, the hands are free to gather food. Both acrobatic and swift, Spider monkeys move through the trees, with one arm stride covering up to 40 feet. Spider monkeys live in evergreen rainforests, semi deciduous and mangrove forests, from Southern Mexico to Brazil. They almost never come to the ground, remaining up in the upper canopy, preferring undisturbed high forest. Spider monkeys live in medium-sized, loosely associated groups of about 30 individuals, which fragment into subgroups of varying smaller sizes and composition. Since their thumb is absent, the Spider monkey's grooming is not as developed as in other primates. They scratch themselves with hands and feet, but most of their social grooming is mothers grooming their young. A female is able to give birth between the ages of 4 to 5 years old, with an estrus cycle of 26 days. The birth interval is 17 to 45 months. Males are sexually mature at the age of 5 years. After a gestation period of 226-232 days, one entirely black baby is born. The mother continuously carries the baby, clinging to her and at about 5 months of age it will begin riding on her back. ...read more.


Time: 3:32 - 4:59 PM Weather: 80� / Sunny TIME BEHAVIOR DISTANCE STATE/ EVENT 3:32 BR 8-10ft E 3:35 BR 8-10ft E 3:38 C 8-10ft E 3:41 SC 6-10ft S 3:44 G 6-10ft S 3:47 G 6-10ft S 3:50 G 6-10ft S 3:53 G 6-10ft S 3:56 G 6-10ft S 3:59 R 6-10ft S 4:02 R 6-10ft S 4:05 R 6-10ft S 4:08 R 6-10ft S 4:11 R 6-10ft S 4:14 R 10-15ft S 4:17 R 10-15ft S 4:20 C 10-15ft E 4:23 C 10-15ft E 4:26 C 10-15ft E 4:29 V 10-15ft S 4:32 E 10-15ft S 4:35 E 10-15ft S 4:38 E 10-15ft S 4:41 E 8-10ft S 4:44 E 6-10ft S 4:47 S 6-10ft S 4:50 S 6-10ft S 4:53 SBR 6-10ft E 4:56 SBR 6-10ft E 4:59 SBR 6-10ft E Date: 11/20/02 Time: 1:12 - 2:29 PM Weather: 75� / Cloudy TIME BEHAVIOR DISTANCE STATE/ EVENT 1:12 R 6-10ft S 1:15 R 6-10ft S 1:18 R 6-10ft S 1:21 R 6-10ft S 1:24 R 6-10ft S 1:27 R 6-10ft S 1:30 R 6-10ft S 1:33 R 6-10ft S 1:36 R 6-10ft S 1:39 S 10-15ft S 1:42 S 10-15ft S 1:45 G 10-15ft S 1:48 G 10-15ft S 1:51 G 6-10ft S 1:54 G 6-10ft S 1:57 G 6-10ft S 2:00 HG 6-10ft S 2:03 HG 6-10ft S 2:06 V 6-10ft S 2:09 HG 6-10ft S 2:12 HG 6-10ft S 2:15 HG 6-10ft S 2:18 HG 6-10ft S 2:11 V 6-10ft S 2:14 HG 6-10ft S 2:17 HG 6-10ft S 2:20 S 6-10ft S 2:23 S 6-10ft S 2:26 S 6-10ft S 2:29 R 6-10ft S Date: 11/20/02 (Continued) Time: 2:52 - 3:22 Weather: 75� / Cloudy TIME BEHAVIOR DISTANCE STATE/ EVENT 2:52 R 6-10ft S 2:55 R 6-10ft S 2:58 R 6-10ft S 3:01 R 6-10ft S 3:04 R 6-10ft S 3:07 S 6-10ft S 3:10 S 6-10ft S 3:13 S 6-10ft S 3:16 E 6-10ft S 3:19 E 6-10ft S 3:22 SP 6-10ft E Time Sheet Observer: Michael ...read more.


The group of Spider monkeys did spend a good portion of the day brachiating, but not all monkeys were participating in this behavior. The older members of the group did not play, and spent most of their time resting. Reasons for some of the behaviors observed, that were not recorded on the time sheets were vocalizations due to the monkeys seeing the zookeepers. The Spider Monkeys seemed very accustomed to the fact that the zookeepers bring them food. As soon as they would see the zookeepers, they would make vocalizations and would become a bit rowdy. This type of behavior would not be observed in the wild because wild Spider monkeys are required to scavenge for their food. V. Conclusion This study focused on the behaviors of the LA Zoo Spider Monkeys. The team of observers wanted to discover whether these monkeys spent more time resting or being bored rather than in an active state. According to the data collected, the LA Zoo Spider Monkeys do spend the majority of their time resting during the day. This time of resting or being in an inactive state was observed to be due to boredom and not due to a break between excessive activity. Of those monkeys participating in activity only one, Zebon was active. The majority of the group spent most of their time in one section of the cage. Possible solutions to this problem include enrichment through changing the monkey's caged environment. Once a month the ropes, plants, and shaded resting area can be changed so that the monkeys do not become accustomed to their surroundings. By doing this, the monkeys won't be bored of seeing the same setting and they can brachiate in different directions instead of moving in circles. An easier solution to this would be to rotate the species among the different cages. For example, each month a different primate species will be in a different cage so that it will have a new environment. This however would only be possible if all the cages were the same size and had the same accommodations. ...read more.

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