Results 21 to 30 of about 2,927 (210)
Eusociality and the evolution of aging in superorganisms [PDF]
Abstract Eusocial insects – ants, bees, wasps and termites – are being recognized as model organisms to unravel the evolutionary paradox of aging for two reasons: (1) queens (and kings, in termites) of social insects outlive similar sized solitary insects by up to several orders of magnitude; (2) all eusocial taxa show a divergence of ...
Boris H. Kramer +3 more
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In several insect eusocial lineages, e.g., some aphids, thrips, ants, some stingless bees, and termites, task specialization is brought to its climax with a sterile soldier caste solely devoted to colony defense.
Corentin Jouault +11 more
doaj +1 more source
The evolution of eusociality [PDF]
Eusociality, in which some individuals reduce their own lifetime reproductive potential to raise the offspring of others, underlies the most advanced forms of social organization and the ecologically dominant role of social insects and humans. For the past four decades kin selection theory, based on the concept of inclusive fitness, has been the major ...
Abbot, Patrick +136 more
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Haplodiploidy and the evolution of eusociality: split sex ratios (vol 179, pg 240, 2012) [PDF]
It is generally accepted that from a theoretical perspective, haplodiploidy should facilitate the evolution of eusociality. However, the "haplodiploidy hypothesis" rests on theoretical arguments that were made before recent advances in our empirical ...
West, SA +4 more
core +2 more sources
A mid-cretaceous origin of sociality in xylocopine bees with only two origins of true worker castes indicates severe barriers to eusociality. [PDF]
The origin of sterile worker castes, resulting in eusociality, represents one of the major evolutionary transitions in the history of life. Understanding how eusociality has evolved is therefore an important issue for understanding life on earth. Here we
Sandra M Rehan +2 more
doaj +1 more source
Intra-colony venom diversity contributes to maintaining eusociality in a cooperatively breeding ant
Background Eusociality is widely considered to evolve through kin selection, where the reproductive success of an individual’s close relative is favored at the expense of its own. High genetic relatedness is thus considered a prerequisite for eusociality.
Samuel D. Robinson +10 more
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Eusocial insects are defined as those that show cooperative brood care, reproductive caste differentiation and overlap of generations. I argue that this definition is rather restrictive and has often prevented the simultaneous consideration of somewhat less social insects and cooperatively breeing birds and mammals which exhibit levels of altruism ...
Gadagkar, Raghavendra
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Haplodiploidy, sex-ratio adjustment, and eusociality. [PDF]
Hamilton's "haplodiploidy hypothesis" holds that inflated sororal relatedness has promoted altruistic sib rearing in haplodiploids, potentially explaining their apparent predisposition to eusociality.
Ross, Laura, Gardner, Andy
core +1 more source
Eusociality: Origin and consequences [PDF]
In this new assessment of the empirical evidence, an alternative to the standard model is proposed: group selection is the strong binding force in eusocial evolution; individual selection, the strong dissolutive force; and kin selection (narrowly defined), either a weak binding or weak dissolutive force, according to circumstance.
Edward O, Wilson, Bert, Hölldobler
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Evolution of eusociality [PDF]
Insulin signalling underlies the evolution and regulation of eusocial behaviours in ants, posits a recent study in Science.
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