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 …
Evolutionary origins of cooperative and communal breeding: lessons from the crotophagine cuckoos
C Riehl - Ethology, 2021 - Wiley Online Library
Most cooperatively breeding birds live in family groups, in which a breeding pair is assisted
by genetically related “helpers” who do not reproduce. In some species, however, several …
by genetically related “helpers” who do not reproduce. In some species, however, several …
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 …
Rapid plastic breeding response to rain matches peak prey abundance in a tropical savanna bird
N Hidalgo Aranzamendi, ML Hall… - Journal of Animal …, 2019 - Wiley Online Library
Abstract Changes in climate are shifting the timing of life cycle events in the natural world.
Compared to northern temperate areas, these effects are relatively poorly understood in …
Compared to northern temperate areas, these effects are relatively poorly understood in …
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 …
Direct benefits explain interspecific variation in helping behaviour among cooperatively breeding birds
SA Kingma - Nature Communications, 2017 - nature.com
Kin selection theory provides one important explanation for seemingly altruistic helping
behaviour by non-breeding subordinates in cooperative breeding animals. However, it …
behaviour by non-breeding subordinates in cooperative breeding animals. However, it …
[HTML][HTML] Context-dependent social benefits drive cooperative predator defense in a bird
Understanding the major evolutionary transition from solitary individuals to complex
societies is hampered by incomplete insight into the drivers of living in cooperative groups. 1 …
societies is hampered by incomplete insight into the drivers of living in cooperative groups. 1 …
Kin selection, not group augmentation, predicts helping in an obligate cooperatively breeding bird
Kin selection theory has been the central model for understanding the evolution of
cooperative breeding, where non-breeders help bear the cost of rearing young. Recently …
cooperative breeding, where non-breeders help bear the cost of rearing young. Recently …