Behavioural tactics of breeders in cooperative meerkats

@article{CluttonBrock2004BehaviouralTO,
  title={Behavioural tactics of breeders in cooperative meerkats},
  author={Tim H. Clutton‐Brock and Andrew F Russell and Lynda L. Sharpe},
  journal={Animal Behaviour},
  year={2004},
  volume={68},
  pages={1029-1040}
}
Breeders are less active foragers than non-breeders in wild Damaraland mole-rats
TLDR
It is shown that, in wild Damaraland mole-rats (Fukomys damarensis), breeders show lower activity in foraging areas than non-breeding group members, suggesting that group living allows social mole-rat breeders to reduce their investment in energetically costly behaviour, or alternatively, that the high cost of reproduction forces a behavioural trade-off against foraging investment.
Who cares? Individual contributions to pup care by breeders vs non-breeders in the cooperatively breeding banded mongoose (Mungos mungo)
TLDR
Investigation of individual contributions to pup escorting in the banded mongoose (Mungos mungo), a cooperatively breeding mammal in which reproductive skew is low, suggests that relative contributions by breeders vs non-breeders are not dependent on group size but on the ratio of breeders to carers and the probability that non-Breeders will breed in the near future.
Brooding, provisioning, and compensatory care in the cooperatively breeding acorn woodpecker
TLDR
Compensation, at least by breeders, was significantly lower during the first week of the nestling period than later on, supporting the hypothesis that compensatory reduction in care is less likely when brood reduction is more common and was not affected by the acorn crop.
Pup Provisioning in the Cooperatively Breeding African Wild Dog, Lycaon pictus, is Driven by Pack Size, Social Status and Age
TLDR
The results support that the need for more helpers to care for offspring contributes to the evolutionary consequence of an inverse density dependence and are best explained by a strong selection pressure for individual behaviour that results in larger pack sizes in this species.
Experimental predator intrusions in a cooperative breeder reveal threat-dependent task partitioning
TLDR
It is shown how breeders and helpers of the cooperatively breeding cichlid Neolamprologus savoryi partition predator defense depending on intruder type and the presence of dependent young, and that in a highly social fish different group members exhibit fine-tuned behavioral responses in dependence of ecological and reproductive parameter variation.
ADAPTIVE SIZE MODIFICATION BY DOMINANT FEMALE MEERKATS
TLDR
The results suggest that the acquisition of alpha status in female meerkats is associated with an adaptive increase in body size and hence that morphological modification of female vertebrates may be more widespread than has been previously supposed.
Nest defence and offspring provisioning in a cooperative bird: individual subordinates vary in total contribution, but no division of tasks among breeders and subordinates
TLDR
No evidence for division of tasks between or within social classes is found, highlighting it may be absent in facultatively cooperative birds even when activities are costly and important for reproduction, and suggests that in such species, cooperative improvement of overall investment may be more effective than enhanced individual efficiency at different tasks.
Parental and Alloparental Care in a Polygynous Mammal
TLDR
It is indicated that sisters can form stable cooperative relationships, but members of a communal nest allocate their caregiving to individual offspring according to potential trade-offs between direct and indirect fitness benefits.
...
...

References

SHOWING 1-10 OF 31 REFERENCES
Evolution and Development of Sex Differences in Cooperative Behavior in Meerkats
TLDR
It is shown that female meerkat helpers contribute more to rearing young than males and that female helpers feed female pups more frequently than males, which support the view that direct, mutualistic benefits are important in the evolution of specialized cooperative behavior.
Provisioning rules in cooperatively breeding long-tailed tits Aegithalos caudatus: an experimental study
  • B. Hatchwell, A. Russell
  • Psychology
    Proceedings of the Royal Society of London. Series B: Biological Sciences
  • 1996
TLDR
In a population of long-tailed tits Aegithalos caudatus all birds attempted to breed monogamously, but some helped to provision the nestlings of another pair if their own breeding attempt failed, to examine how individual investment varied with the number of carers.
Investment Strategies of Breeders in Avian Cooperative Breeding Systems
TLDR
A study of long‐tailed tits Aegithalos caudatus showed that both parental strategies may occur within a species, depending on the number of helpers, and there was some evidence that males and females had different investment rules.
ADAPTIVE SIZE MODIFICATION BY DOMINANT FEMALE MEERKATS
TLDR
The results suggest that the acquisition of alpha status in female meerkats is associated with an adaptive increase in body size and hence that morphological modification of female vertebrates may be more widespread than has been previously supposed.
Contributions to cooperative rearing in meerkats
In vertebrate societies where young are reared communally, nonbreeding helpers are usually closely related to young but often vary widely in their contributions to feeding them. Evolutionary
EVOLUTION OF HELPING BEHAVIOR IN COOPERATIVELY BREEDING BIRDS
TLDR
It is argued that there is no obvious dichotomy between cooperative societies based on natal philopatry and the formation of extended families, and those formed via recruitment of unrelated individuals into coalitions.
Natural selection and the communal rearing of pups in African wild dogs (Lycaon pictus)
TLDR
There is a positive, but non-significant correlation between the number of adult helpers and thenumber of pups raised, however, the sex ratio bias towards males at birth suggests that male helpers (which predominate) usually increase pup survivorship.
Meerkat helpers do not specialize in particular activities
TLDR
The development of cooperative behaviour in female helpers in meerkats, Suricata suricatta, an obligately cooperative mammal where young produced by the dominant female are reared by up to 30 helpers is described.
Offspring food allocation by parents and helpers in a cooperative mammal
TLDR
Pup feeding behavior by helpers and parents in a cooperative mongoose, the meerkat, is described and the probability of a prey item being fed to a pup shows a positive relationship with prey size and a negative relationship with pup distance.
A genetic analysis of breeding success in the cooperative meerkat (Suricata suricatta)
TLDR
It is shown that there is strong reproductive skew in favor of dominants, but that the extent of skew differs between the sexes and between different sites, and the reproductive skew arises from incest avoidance and reproductive suppression of the subordinates by the dominants.
...
...