SPIDER MONKEY - LIFE CYCLE, REPRODUCTION AND ADAPTATION.

 

Spider monkeys weigh about 6 kg (13.2 pounds) and are 35–66 cm (14–26 inches) long, excluding the heavily furred tail, which is longer than the body. The coat, of variable length and fineness, ranges among the several species from gray to reddish, dark brown, or black. Most have a black face with white eye rings, but some have a flesh-coloured face. Spider monkeys live in the tropical rain forests of Central and South America and occur as far north as Mexico. The monkeys live in bands numbering up to 35 animals but forage in smaller groups, roaming the highest branches during the day. They feed most intensively early in the day, relishing fruit supplemented by nuts, seeds, buds, flowers, and leaves as well as spiders and bird eggs. They do not normally descend from the trees. They will leap or drop spread-eagled from one tree to another. Spider monkeys are dextrous with their tail as well as their hands. They pick up objects with the tail, and they hang from branches by using the tail alone.

Behavior

They have long, lanky arms and prehensile (gripping) tails that enable them to move gracefully from branch to branch and tree to tree. These nimble monkeys spend most of their time aloft, and maintain a powerful grip on branches even though they have no thumbs.

These New World primates are social and gather in groups of up to two- or three-dozen animals. At night, these groups split up into smaller sleeping parties of a half dozen or fewer. Foraging also occurs in smaller groups, and is usually most intense early in the day. Spider monkeys find food in the treetops and feast on nuts, fruits, leaves, bird eggs, and spiders. They can be noisy animals and often communicate with many calls, screeches, barks, and other sounds.

Reproduction

Typically, females give birth to only a single baby every two to five years. Young monkeys depend completely on their mothers for about ten weeks, but after that time they begin to explore on their own and play amongst themselves. Mothers continue to care for their young for the first year of their lives, and often move about with their offspring clinging to their backs.

Threats to Survival

Indigenous peoples often hunt spider monkeys for food, and the animals are usually agitated by human contact. Logging and deforestation continue to shrink the space that spider monkeys are able to call home.