| 要約: | The role of sociality in the demography of animals has become an intense focus of
research in recent decades. However, efforts to understand the sociality-demography
nexus have focused on single species or isolated taxonomic groups. Consequently, we
lack generality regarding how sociality associates with demographic traits within the
Animal Kingdom. Here, I propose a continuum of sociality, from solitary to tightly social,
and test whether this continuum correlates with the key demographic properties of 152
species, from jellyfish to humans. After correction for body mass and phylogenetic
relationships, I show that the sociality continuum is associated with key life history traits:
more social species live longer, postpone maturity, have longer generation time, and
greater probability of achieving reproduction than solitary, gregarious, communal, or
colonial species. Contrary to the social buffering hypothesis, sociality does not result in
more buffered populations. While more social species have a lower ability to benefit from
disturbances, they display greater resistance than more solitary species. Finally, I also
show that sociality does not shape reproductive or actuarial senescence rates. This
cross-taxonomic examination of sociality across the demography of 13 taxonomic
classes highlights keyways in which individual interactions shape most aspects of animal
demography.
|
|---|