Scientists studying the elusive western gorilla observed that neighboring social groups have surprisingly peaceful interactions, in contrast to the aggressive male behavior well documented in mountain gorillas. By analyzing the DNA from fecal and hair samples of the western gorilla, scientists uncovered evidence that these neighboring social groups are often led by genetically related males. These findings suggest connections between genetic relationships and group interactions, parallels with human social and behavioral structures, and clues to the social world of early humans.
In the new work, reported by Brenda Bradley and colleagues at the Max Planck Institute for Evolutionary Anthropology and Stony Brook University, the researchers collected DNA samples to characterize patterns of paternity within and among western gorilla social groups. The authors found that a strong majority of silverbacks were related to other silverbacks in the area and that in almost all cases, the nest sites of related silverbacks were found near each other. It was already known that both male and female western gorillas leave their natal group once mature, but the new findings suggest that the dispersing males may remain in the vicinity of male kin, forming a so-called "dispersed male network."
These genetic results point to a social structure previously unrecognized in gorillas and may help explain other unique characteristics of the western gorilla. Recent studies have reported that western gorillas exhibit frequent and often peaceful encounters between groups, behavior that differs significantly with that of the more extensively studied mountain gorilla. In contrast, the mountain gorillas have infrequent social interactions with other groups and, when they do occur, they tend to involve aggressive male-male threat displays and female herding behavior. Moreover, multiple adult male mountain gorillas, often relatives, may remain together within a given mountain gorilla group, rather than dispersing.
Heidi Hardman | EurekAlert!
A new molecular player involved in T cell activation
07.12.2018 | Tokyo Institute of Technology
News About a Plant Hormone
07.12.2018 | Julius-Maximilians-Universität Würzburg
What if a sensor sensing a thing could be part of the thing itself? Rice University engineers believe they have a two-dimensional solution to do just that.
Rice engineers led by materials scientists Pulickel Ajayan and Jun Lou have developed a method to make atom-flat sensors that seamlessly integrate with devices...
Scientists at the University of Stuttgart and the Karlsruhe Institute of Technology (KIT) succeed in important further development on the way to quantum Computers.
Quantum computers one day should be able to solve certain computing problems much faster than a classical computer. One of the most promising approaches is...
New Project SNAPSTER: Novel luminescent materials by encapsulating phosphorescent metal clusters with organic liquid crystals
Nowadays energy conversion in lighting and optoelectronic devices requires the use of rare earth oxides.
Scientists have discovered the first synthetic material that becomes thicker - at the molecular level - as it is stretched.
Researchers led by Dr Devesh Mistry from the University of Leeds discovered a new non-porous material that has unique and inherent "auxetic" stretching...
Scientists from the Theory Department of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science (CFEL) in Hamburg have shown through theoretical calculations and computer simulations that the force between electrons and lattice distortions in an atomically thin two-dimensional superconductor can be controlled with virtual photons. This could aid the development of new superconductors for energy-saving devices and many other technical applications.
The vacuum is not empty. It may sound like magic to laypeople but it has occupied physicists since the birth of quantum mechanics.
06.12.2018 | Event News
03.12.2018 | Event News
28.11.2018 | Event News
07.12.2018 | Life Sciences
07.12.2018 | Materials Sciences
07.12.2018 | Physics and Astronomy