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do monkeys lay eggs or give birth
Monkeys only give birth every couple of years. They are excellent at carrying for the young. The females will often work as a unit to care for them.
do monkeys lay eggs
Egg Laying or Live Birth: How Evolution Chooses
The old riddle, “Which came first, the chicken or the egg?” is relatively easy to answer as a question about the evolution of birth in animals.
Egg laying almost certainly came before live birth; the armored fish that inhabited the oceans half a billion years ago .
and were ancestral to all land vertebrates seem to have laid eggs. But the rest of the story is far from straightforward.
Over millennia of evolution, nature has come up with only two ways for a newborn animal to come into the world.
“We have this really fundamental split,” said Camilla Whittington, a biologist at the University of Sydney.
Is there some primordial reason for this strict reproductive dichotomy between egg laying (oviparity).
live birth (viviparity)?
When and why did live birth evolve? These are just some of the questions that new research — including studies of a remarkable lizard that can lay eggs and bear live young at the same time — is exploring, all the while underscoring the enormous complexity and variability of sexual reproduction.
A Strategic Choice
Early female animals laid eggs in the sense that they released their ova into the world, often thousands at a time. Sperm released by males then fertilized some of these eggs in a hit-or-miss fashion, and the resulting embryos took their chances on surviving in the hostile world until they hatched. Many creatures, particularly small, simple ones, still reproduce this way.
do sea monkeys lay eggs
do spider monkeys lay eggs
Spider monkeys live in the tropical rain forests of Central and South America and occur as far north as Mexico.
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.
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.
do howler monkeys lay eggs
The sound travels three miles, with the male being louder than females. They make their howling sound by drawing air into their throat through a cavity in their oversized hyoid bone. Howling is a critical part of their social behavior. Troupe males call every morning and nightfall.
do sea monkeys lay eggs or give birth
A true MIRACLE of nature, Sea-Monkeys® actually exist in SUSPENDED ANIMATION! While inside their tiny eggs, yet unborn, they burn the “spark of life” for many YEARS! The Instant-Life® crystals in which the eggs are enclosed, preserve their viability and help to-extend still further, their unhatched life span!
does spider monkeys lay eggs
What are Spider Monkeys?
If you think about different types of monkey, there are many that come to mind. One well-known type is spider monkeys. However, spider monkeys are not a single species. They are a group of New World monkeys (monkeys that live in the Americas) that all belong to the genus Ateles. Within this, there are actually seven different species and several subspecies. All members of the Ateles genus live in the tropical rainforests of Central and South America. Despite the fact that they are different species, they share many behavioral similarities, including their behavior regarding mating and reproduction.
Female spider monkeys are sexually mature, or able to mate after they are four or five years old. Males are sexually mature at around five years old as well. Spider monkeys actually mate less often than other primates in their area, only mating every two to four years at most. Compare that to squirrel monkeys (another New World monkey), who might mate every year.
However, once spider monkeys are ready to mate, they are not restricted by season and can mate at any time of year. The female spider monkey is the one who chooses which male to mate with.
Birth and Infant Care
Once she is pregnant, the mother spider monkey will carry the baby for seven to eight months before giving birth. This is known as her gestation period. Spider monkeys typically have one baby at a time. They do sometimes have twins, but this is not particularly common.
The mother spider monkey is the only caretaker for her baby. She does not receive help either from the male or other females in the group. For the first five months or so of the baby’s life, it will cling to the mother’s chest. Once it is old enough, it moves to her back. Baby spider monkeys continue to nurse and ride on their mother’s back until they are two years old.
over two years old
Once they are over two years old, the young spider monkey stops riding on its mother’s back and can move about on its own. However, babies still stay close to their mothers until they are four years old or so, and able to have babies of their own.
Female spider monkeys are devoted and protective mothers. In addition to carrying them for so long, they groom their babies even though social grooming is not a major aspect of spider monkey life. Thus level of care helps explain why there is such a big gap between births.