Humans fall short of the top tier when it comes to monogamy, ranking a respectable 7th out of 35 species in a new study published by researchers at the University of Cambridge.
The team, led by Dr. Mark Dyble, analyzed genetic data from human and animal populations to determine the proportions of full versus half-siblings for each species. The results showed that humans have a relatively high rate of monogamy, with 66% of siblings being full siblings - a ratio that outpaces most other mammals.
Beavers take the top spot, with an impressive 72% rate of full siblings, while meerkats come in just behind at 60%. Mountain gorillas lag far behind, however, with only 6% of their siblings being full-siblings. Chimpanzees and dolphins fared even worse, with rates of just 4%.
While the study suggests that humans are generally more monogamous than other mammals, Dr. Dyble notes that there is significant variation across human populations, with some societies exhibiting much lower levels of monogamy.
One researcher, Robin Dunbar, puts humans firmly on the cusp between being a monogamous species and one that is more polygynous. He warns that if social or religious pressures were to weaken, humans would quickly revert to their natural desire for polygamy.
Dr. Kit Opie, another expert in evolutionary anthropology, suggests that both promiscuity and monogamy may be strategies used by mammals to mitigate the risks of male infanticide in large-brained species like humans and chimpanzees.
The study's findings provide a fascinating insight into human behavior and our place within the animal kingdom. While we may not be at the top of the monogamy league table, our relatively high rate of full siblings is still a remarkable achievement - one that highlights our unique position among mammals.
The team, led by Dr. Mark Dyble, analyzed genetic data from human and animal populations to determine the proportions of full versus half-siblings for each species. The results showed that humans have a relatively high rate of monogamy, with 66% of siblings being full siblings - a ratio that outpaces most other mammals.
Beavers take the top spot, with an impressive 72% rate of full siblings, while meerkats come in just behind at 60%. Mountain gorillas lag far behind, however, with only 6% of their siblings being full-siblings. Chimpanzees and dolphins fared even worse, with rates of just 4%.
While the study suggests that humans are generally more monogamous than other mammals, Dr. Dyble notes that there is significant variation across human populations, with some societies exhibiting much lower levels of monogamy.
One researcher, Robin Dunbar, puts humans firmly on the cusp between being a monogamous species and one that is more polygynous. He warns that if social or religious pressures were to weaken, humans would quickly revert to their natural desire for polygamy.
Dr. Kit Opie, another expert in evolutionary anthropology, suggests that both promiscuity and monogamy may be strategies used by mammals to mitigate the risks of male infanticide in large-brained species like humans and chimpanzees.
The study's findings provide a fascinating insight into human behavior and our place within the animal kingdom. While we may not be at the top of the monogamy league table, our relatively high rate of full siblings is still a remarkable achievement - one that highlights our unique position among mammals.