The first thing you can find out about the Delacour langur and its color. It has a black jet torso, legs, and head, with white buttocks curved in the middle. (These monkeys—Trachypithecus delacouri if you want to be talented – look like Oreos.) But that’s the way adults look. The children are a different story: they are orange.
This is their special “garment,” which disappears in a matter of months. Children from many other species of apes also have fur that is different from that of adults. “One of the biggest questions always is why – why do they wear different shirts?” asks Ted Stankowich, an evolutionary specialist and Director of the Mammal Lab at California State University Long Beach.
Primatologists have developed many ideas, based on colors. Maybe it’s a change in the environment. Or a test-and-see approach to get the attention of local authorities. Now, write in American Journal of Biological AnthropologyStankowich’s team thinks they’ve got it, and the answer is a little scary: The A wonderful coat can protect infants kill babies.
Among the monkeys, the new mothers take care of their young in groups of teams. For example, Langurs live in groups of 20 to 50 people with several wives (usually relatives), their children, and one husband. Every two or three years, the infamous one on the other side can chase after the strong man and seize power. These sheep want to mate with the female, and they come with new genes. But when it comes to breastfeeding, it can be dangerous. Stankowich states: “Older men who came to take over the army killed the baby so that the women could return to estrus.
The team studied information on baby and adult clothing, systems, and biology on 286 species of monkeys, and found that there was a strong correlation between the types of baby coats and baby kernels. The group’s idea is that fine hair is an unmistakable protection: Children who wear special shirts need extra care from their mothers. As infants receive more attention and care, they grow faster. This means they are at risk for a short period of time. Stankowich states: “Killing children can happen at any time. “And shortening the time when these babies are suffering and being younger, is a good thing for women.”
Amanda Spriggs, a primeter specialist at SUNY Albany who did not participate in the study, calls this idea “coercive.” He also said that the danger of this change is that it makes the attack of some kind easier. “It’s like putting a target on your child’s back to a beast,” he says. According to the evolutionary theory, species can remain endangered if they reduce the high risk. “Having a special maternity coat should be of great benefit,” she says. And what could be more profitable to evolution than to protect the next generation?
That said, there There are many good reasons why a child may look different from his or her parents. For example: concealment. Some birds carry offspring spots or stripes; When the adults let them go to feed, the system hid itself in the bushes. Harp seals have puppies white snow coat which mixes with ice, while other types of seals that leave their babies in the caves are littered with dark baby fur.
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