Group augmentation and the evolution of cooperation
The group augmentation (GA) hypothesis states that if helpers in cooperatively breeding
animals raise the reproductive success of the group, the benefits of living in a resulting …
animals raise the reproductive success of the group, the benefits of living in a resulting …
Senescence in the wild: Insights from a long-term study on Seychelles warblers
Senescence–the progressive age-dependent decline in performance–occurs in most
organisms. There is considerable variation in the onset and rate of senescence between …
organisms. There is considerable variation in the onset and rate of senescence between …
Early‐life telomere length predicts lifespan and lifetime reproductive success in a wild bird
Poor conditions during early development can initiate trade‐offs that favour current survival
at the expense of somatic maintenance and subsequently, future reproduction. However, the …
at the expense of somatic maintenance and subsequently, future reproduction. However, the …
Hot and dry conditions predict shorter nestling telomeres in an endangered songbird: Implications for population persistence
Climate warming is increasingly exposing wildlife to sublethal high temperatures, which may
lead to chronic impacts and reduced fitness. Telomere length (TL) may link heat exposure to …
lead to chronic impacts and reduced fitness. Telomere length (TL) may link heat exposure to …
The evolution of cooperative breeding by direct and indirect fitness effects
The evolution of cooperative breeding has been traditionally attributed to the effect of kin
selection. While there is increasing empirical evidence that direct fitness benefits are …
selection. While there is increasing empirical evidence that direct fitness benefits are …
Breeders that receive help age more slowly in a cooperatively breeding bird
Helping by group members is predicted to lead to delayed senescence by affecting the trade-
off between current reproduction and future survival for dominant breeders. Here we …
off between current reproduction and future survival for dominant breeders. Here we …
Kinship reduces alloparental care in cooperative cichlids where helpers pay-to-stay
M Zöttl, D Heg, N Chervet, M Taborsky - Nature communications, 2013 - nature.com
Alloparental brood care, where individuals help raising the offspring of others, is generally
believed to be favoured by high degrees of relatedness between helpers and recipients …
believed to be favoured by high degrees of relatedness between helpers and recipients …
Male songbird indicates body size with low-pitched advertising songs
Body size is a key sexually selected trait in many animal species. If size imposes a physical
limit on the production of loud low-frequency sounds, then low-pitched vocalisations could …
limit on the production of loud low-frequency sounds, then low-pitched vocalisations could …
Demography and social evolution of banded mongooses
Long-term studies of cooperatively breeding vertebrates offer excellent opportunities to test
theories about the evolution of cooperation and the demographic consequences of social …
theories about the evolution of cooperation and the demographic consequences of social …
Hard-working helpers contribute to long breeder lifespans in cooperative birds
PA Downing, AS Griffin… - … Transactions of the …, 2021 - royalsocietypublishing.org
In many species that raise young in cooperative groups, breeders live an exceptionally long
time despite high investment in offspring production. How is this possible given the expected …
time despite high investment in offspring production. How is this possible given the expected …