Bonobos get it on every which way. But there is a line that lady bonobos have drawn in the sand, and it turns out that line is "unattractive males." You might know bonobos as the more peaceful cousins of chimpanzees. If you didn't already know them, welcome to the world of bonobos--there's a lot of sex. Which isn't to say that they're constantly having sex, just that they're a very free-spirited group of apes.
Bonobo mothers help their sons to become fathers by introducing them to prospective partners. Their strategies include putting them in close proximity to ovulating females and physically preventing other males from competing with them. This match-making increases the animal's chance of producing off-spring by three-fold, but - despite this - the mothers frequently neglect to help their daughters. Scientists say this is because males hold dominant positions over females in the bonobo community. Bonobo mothers help their sons to find suitable mates by presenting them to females.
If your mum gets too involved in your love life, spare a thought for bonobos. Females of these great apes, which are closely related to chimpanzees, help their sons with hook-ups, guard the young lovers while they mate, and even haul rival males off females mid-sex. Males whose mothers are in their group have three times the number of babies as those who don't. It's a strategy that's akin to the "grandmother hypothesis" in humans, which says that older women can boost their reproductive success by helping their daughters rear children rather than having more offspring of their own. "Female bonobos can increase their fitness even if they don't reproduce any more -- but not through daughters, it's through their sons," says Martin Surbeck of the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany.
KYOTO – Wild bonobos, like humans, experience long-sightedness after they become about 40 years old, shedding new light on the common physiological aging phenomenon among hominidae, Kyoto University research showed Monday. Age-related long-sightedness, or presbyopia, has been regarded as a unique phenomenon in humans caused by such activities as reading and writing. But the finding indicates senescence of eyes can be commonly seen in primates, according to a paper issued on the online version of the U.S. science magazine Current Biology. Presbyopia is a decrease in the ability to focus on near visual tasks. A team from the university's Primate Research Institute conducted the research on grooming by old wild bonobos in Africa, measuring the distance between groomers' eyes and fingers among 14 apes aged 11 to 45 years old.
They are our closest ape cousins who famously prefer to make love rather than war, but it seems the female dominated societies of bonobos may not be as idyllic as they first seem. Biologists have discovered the apes, which live in the Congo basin of Africa, owe their apparently peaceful lives to widespread deception by the fairer sex. They say that female bonobos have become the dominant sex in their societies – a structure that is unusual among great apes – by tricking males about when they are fertile. Bonobos are known for their peaceful societies where females take the dominant role. Researchers believe they may have achieved this dominance by deceiving males in their group about when they are fertile.