Reciprocal food sharing in the vampire bat

  title={Reciprocal food sharing in the vampire bat},
  author={Gerald S. Wilkinson},
Behavioural reciprocity can be evolutionarily stable1–3. Initial increase in frequency depends, however, on reciprocal altruists interacting predominantly with other reciprocal altruists either by associating within kin groups or by having sufficient memory to recognize and not aid nonreciprocators. Theory thus suggests that reciprocity should evolve more easily among animals which live in kin groups. Data are available separating reciprocity from nepotism only for unrelated nonhuman animals4… Expand
Does food sharing in vampire bats demonstrate reciprocity?
Factors that predict food sharing in vampire bats are reviewed based on previously published and unpublished data, validate previous published results with more precise relatedness estimates, and describe current evidence for and against alternative explanations for its evolutionary stability. Expand
Cooperation and social bonds in common vampire bats
Regurgitated food sharing among vampire bats is a classic textbook example of reciprocity (" reciprocal altruism "). But many authors have contested both the notion that reciprocity explains vampireExpand
Social benefits of non-kin food sharing by female vampire bats
Results indicate that a bat can expand its network of possible donors by helping non-kin, suggesting the possibility of alternative responses to a partner's inability to reciprocate. Expand
Correlated pay-offs are key to cooperation
It is found that neither the cognitive requirements of reciprocal cooperation nor the often sequential nature of interactions are insuperable stumbling blocks for the evolution of reciprocity. Expand
Correlated payoffs are key to cooperation
The general belief that cooperation and altruism in social groups result primarily from kin selection has recently been challenged, not least because results from cooperatively breeding insects andExpand
Experimental evidence of reciprocal altruism in the pied flycatcher
Experimental evidence of mobbing behaviour, the joint assault on a predator in an attempt to drive it away, is presented as reciprocal altruism in the breeding pied flycatcher (Ficedula hypoleuca). Expand
Reciprocal altruism in bats and other mammals
It is suggested that reciprocal altruism can be selectively more important than kin selection when altruistic behaviors in a relatively large social group occur frequently and provide a major fitness benefit to the recipient even when that recipient is related to the donor. Expand
Grooming reciprocation among female primates: a meta-analysis
A meta-analysis of grooming reciprocation among female primates showed that female primates groom preferentially those group mates that groom them most, and this result holds true when controlling for maternal kinship. Expand
A proximate perspective on reciprocal altruism
Three types of reciprocity are distinguished: Symmetry-based reciprocity is cognitively the least complex form, based on symmetries inherent in dyadic relationships, while Attitudinal reciprocity, which is more cognitively complex, is based on the mirroring of social attitudes between partners and is exhibited by both capuchin monkeys and chimpanzees. Expand
Grooming reciprocity in wild male chimpanzees
Understanding cooperation between unrelated individuals remains a central problem in animal behaviour; evolutionary mechanisms are debated, and the importance of reciprocity has been questioned.Expand


Cooperation and Reciprocity in Avian Social Systems
  • J. Ligon
  • Biology
  • The American Naturalist
  • 1983
Here I describe a variety of mutually beneficial interactions between birds that typically are not genetically related, and the three major theoretical conditions for the evolution of cooperation appear to agree well with the empirical data described here. Expand
Are Dolphins Reciprocal Altruists?
The literature on dolphins suggests the existence of a system based to a considerable degree on reciprocal altruism, and it is concluded that in dolphins the authors are surely dealing with complicated social systems whose outlines they are now just beginning to understand. Expand
Evolution of Social Behavior by Reciprocation
Abstract A general model is presented for the evolution of social behavior by reciprocation. The results of our model apply to social traits which are transmitted from one generation to the next by aExpand
Reciprocal altruism in Papio anubis
ALTRUISM is behaviour that benefits another individual at some cost to the altruist, costs and benefits being measured in terms of individual fitness. ‘Reciprocal altruism’ (ref. 1) implies theExpand
The Evolution of Cooperation
Cooperation in organisms, whether bacteria or primates, has been a difficulty for evolutionary theory since Darwin. On the assumption that interactions between pairs of individuals occur on aExpand
The Predatory Behavior of Wild Chimpanzees
Geza Teleki has spent two years observing wild chimpanzees at very close quarters in the Gombe National Park of Tanzania. He has compiled this report on predatory behavior, based in part upon aExpand
Energetics and the Distribution of Vampires
The limits in distribution of Desmodus are correlated with the 10°C minimal winter isotherm both in Mexico and in Argentina and Chile, and more than 90 per cent of which is committed directly to homeostasis and to the cost of handling the food. Expand
Observational study of behavior: sampling methods.
Seven major types of sampling for observational studies of social behavior have been found in the literature and the major strengths and weaknesses of each method are pointed out. Expand
The flow of excess dietary water through the common vampire bat during feeding
Between 5.2 and 12.2 min after feeding, the rates of both fluid absorption from the stomach and excretion of urine were about equal, and during this time the blood volume of the bat was increased by about 17% due to the absorbed fluid. Expand
Renal function and its relation to the ecology of the vampire bat, Desmodus rotundus
Abstract 1. 1. Blood consumption in 7-hr experimental periods (blood available first 2 hr) averaged 37·4 per cent/body wt. 2. 2. Urine averaged 40·5 per cent/blood consumed, with 62 per cent voidedExpand