Optimal breeding group sizes differ by sex in cooperative animals
The evolutionary pros and cons of group living vary for males and females, according to a study of ostriches reported today in eLife.
The evolutionary pros and cons of group living vary for males and females, according to a study of ostriches reported today in eLife.
Plants & Animals
Oct 4, 2022
0
6
To sting or not to sting? An alarm pheromone plays a decisive role in bees' willingness to sting—and their group size, as scientists from the University of Konstanz have now shown
Ecology
Sep 15, 2022
1
126
Did the 12th century B.C.E.—a time when humans were forging great empires and developing new forms of written text—coincide with an evolutionary reduction in brain size? Think again, says a UNLV-led team of researchers ...
Evolution
Aug 5, 2022
2
862
Temperatures are rising, and one colony of ants will soon have to make a collective decision. Each ant feels the rising heat beneath its feet but carries along as usual until, suddenly, the ants reverse course. The whole ...
Plants & Animals
Jul 20, 2022
1
1655
Animals that live in groups tend to be more protected from predators. That idea might be common sense, but it's difficult to test for some species, especially for wild populations of fish that live in the ocean.
Ecology
Jun 29, 2022
0
43
Short growing seasons limited the possible size of hunter-gatherer societies by forcing people to rely on meat, according to a recent study by a team of international reseachers including McGill University professor Eric ...
Evolution
Nov 8, 2021
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249
Scientists have long had difficulty establishing the group size that best allows animals to live long lives and raise many surviving offspring. But now a research team that includes Anthropology researchers from Stony Brook ...
Plants & Animals
Jun 2, 2021
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10
In many social species, including humans, even if large group sizes provide competitive advantages over smaller neighboring groups, the preponderant role of adult males in territoriality has often been put forward, most likely ...
Plants & Animals
May 27, 2020
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60
Conservation efforts for the African forest elephant have been hindered by how little is known the large animal, according to researchers.
Plants & Animals
Apr 29, 2020
0
294
Bacteria have a sense of their own number. They release and sense signaling molecules that accumulate with increasing cell numbers, which allows them to change their behavior when a certain group size is reached. A team of ...
Cell & Microbiology
Mar 5, 2020
0
85