What makes a species Eusocial?
Eusocial animals share the following four characteristics: adults live in groups, cooperative care of juveniles (individuals care for brood that is not their own), reproductive division of labor (not all individuals get to reproduce), and overlap of generations (Wilson 1971).
What is eusocial behavior?
Advanced social behavior that entails nest sharing; division of labor including a caste system with sterile worker caste caring for offspring of the reproductive caste; and overlapping generations so that offspring assist parents.
Why is eusociality adaptive?
The costs to eusociality are clear: a single individual is very unlikely to breed and as such cannot directly pass on its genes. There is no competition for food, so each less stress is put on each individual to maintain it survival.
Are humans eusocial?
Humans, who are more loosely eusocial, dominate land vertebrates. “Eusociality has arisen independently some 10 to 20 times in the course of evolution,” says Tarnita, a junior fellow in Harvard’s Society of Fellows.
How do you think eusociality evolved?
Current theories propose that the evolution of eusociality occurred either due to kin selection, proposed by W. D. Hamilton, or by the competing theory of multilevel selection as proposed by E.O. Wilson and colleagues.
Is eusociality a trait?
Eusociality is distinguished from all other social systems because individuals of at least one caste usually lose the ability to perform at least one behavior characteristic of individuals in another caste….all Termites.
| Thysanoptera | Kladothrips spp. |
|---|---|
| Hemiptera | various Aphids |
How does eusociality evolve?
Eusociality evolved repeatedly in different orders of animals, particularly the Hymenoptera (the wasps, bees, and ants). Current theories propose that the evolution of eusociality occurred either due to kin selection, proposed by W. D. Hamilton, or by the competing theory of multilevel selection as proposed by E.O.
Which explanation has been proposed to explain the evolution of eusociality?
For the past four decades kin selection theory, based on the concept of inclusive fitness, has been the major theoretical attempt to explain the evolution of eusociality. Here we show the limitations of this approach.
What does convergent evolution tell us?
In evolutionary biology, convergent evolution is the process whereby organisms not closely related (not monophyletic), independently evolve similar traits as a result of having to adapt to similar environments or ecological niches.
https://www.youtube.com/watch?v=cPcasxAKduQ