Alloparenting for chimpanzee twins

Kishimoto, Takeshi; Ando, Jun; Tatara, Seiki; Yamada, Nobuhiro; Konishi, Katsuya; Kimura, Natsuko; Fukumori, Akira; Tomonaga, Masaki

doi:10.1038/srep06306

Cited by 7 publications

(5 citation statements)

References 21 publications

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“…By contrast, alloparenting is largely precluded in chimpanzees by the risk of infanticide [ 47 ]—chimpanzee mothers jealously guard their infants, holding onto them even when they have died. Consequently, chimpanzee twins rarely survive outside captivity [ 57 ].…”

Section: The Origins Of Intention Recognition In Communication: ‘Cute...mentioning

confidence: 99%

The interaction engine: cuteness selection and the evolution of the interactional base for language

Levinson

2022

Phil. Trans. R. Soc. B

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The deep structural diversity of languages suggests that our language capacities are not based on any single template but rather on an underlying ability and motivation for infants to acquire a culturally transmitted system. The hypothesis is that this ability has an interactional base that has discernable precursors in other primates. In this paper, I explore a specific evolutionary route for the most puzzling aspect of this interactional base in humans, namely the development of an empathetic intentional stance. The route involves a generalization of mother–infant interaction patterns to all adults via a process (cuteness selection) analogous to, but distinct from, RA Fisher's runaway sexual selection. This provides a cornerstone for the carrying capacity for language. This article is part of the theme issue ‘Revisiting the human ‘interaction engine’: comparative approaches to social action coordination’.

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Section: The Origins Of Intention Recognition In Communication: ‘Cute...mentioning

confidence: 99%

The interaction engine: cuteness selection and the evolution of the interactional base for language

Levinson

2022

Phil. Trans. R. Soc. B

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“…Alloparental care is a universal behavior among human societies (Sear and Mace, ). Meanwhile, in our closest living relative, the chimpanzee, alloparenting is displayed only very rarely (Kishimoto et al, ). At some recent point in human evolution, the trend toward increased alloparenting appears to have increased according to a number of lines of evidence.…”

Section: The Evolutionary Significance Of Alloparenting In Humansmentioning

confidence: 99%

The neurobiological causes and effects of alloparenting

Kenkel

Perkeybile

Carter

2016

Developmental Neurobiology

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Alloparenting, defined as care provided by individuals other than parents, is a universal behavior among humans that has shaped our evolutionary history and remains important in contemporary society. Dysfunctions in alloparenting can have serious and sometimes fatal consequences for vulnerable infants and children. In spite of the importance of alloparenting, they still have much to learn regarding the underlying neurobiological systems governing its expression. Here, they review how a lack of alloparental behavior among traditional laboratory species has led to a blind spot in our understanding of this critical facet of human social behavior and the relevant neurobiology. Based on what is known, they draw from model systems ranging from voles to meerkats to primates to describe a conserved set of neuroendocrine mechanisms supporting the expression of alloparental care. In this review we describe the neurobiological and behavioral prerequisites, ontogeny, and consequences of alloparental care. Lastly, they identified several outstanding topics in the area of alloparental care that deserve further research efforts to better advance human health and wellbeing.

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“…Multiple pregnancy increases the risk of maternal and infant mortality, suggesting that humans are adapted to having only one offspring per gestation (Robson & Smith, 2011). In nonhuman primates, multiple births rarely occur (Kishimoto et al, 2014;Matsumoto-Oda, 1995;Rosen, 1972). In chimpanzees, the monozygotic twinning rate (0.43%) is equal to the average human monozygotic rate (0.48%), but the dizygotic twinning rate (2.36%) is over twice the human average (Ely et al, 2006).…”

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confidence: 99%

Twinning Rates in Uruguay Between 1999 and 2015: Association with Socioeconomic and Demographic Factors

et al. 2019

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Twinning is rare among humans, but there is much variability among populations. Several studies show that certain demographic and socioeconomic factors, such as maternal age, mother’s educational level and income, influence twinning rate. There is no background of analytical studies of twins in Uruguay. To the best of our knowledge, this is the first study that has focused on describing and analyzing Uruguayan twinning rates over a period of 17 years (1999–2015). The birth data were collected from the website of Uruguay’s Ministry of Public Health. Economic data were obtained from Uruguay’s Instituto Nacional de Estadísti’s website for the period 2001–2013, since these variables are defined specifically for that period of time. The statistical software R (The R Project for Statistical Computing) was used. The twinning rate varied from 8.51 to 13 in the studied period. Montevideo has the highest median and the smallest variability in comparison with the other departments. In Uruguay (1999–2015), the highest twinning rate (28.94%) was observed in women aged 45 and older. The analysis also showed a relationship between twin birth rates and the mother’s educational level. In three regions of the country (West, Center and East), twin births show a random pattern but in the other two (North and Metropolitan), there is an increasing trend in the number of twins over time. In conclusion, this study recognizes social, economic and demographic factors that influence in the rate of twin births in Uruguay.

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Alloparenting for chimpanzee twins

Cited by 7 publications

References 21 publications

The interaction engine: cuteness selection and the evolution of the interactional base for language

The interaction engine: cuteness selection and the evolution of the interactional base for language

The neurobiological causes and effects of alloparenting

Twinning Rates in Uruguay Between 1999 and 2015: Association with Socioeconomic and Demographic Factors

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