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515 results on '"Mabulla, Audax"'

1. Beyond the here and now: hunter–gatherer socio-spatial complexity and the evolution of language

Author

Wood, Brian M, Raichlen, David A, Pontzer, Herman, Harris, Jacob A, Sayre, M Katherine, Paolo, Bunga, Anyawire, Mariamu, and Mabulla, Audax ZP

Subjects
Biological Sciences, Biomedical and Clinical Sciences, Generic health relevance, Animals, Tanzania, Language, Biological Evolution, Humans, Papio anubis, Social Behavior, Spatial Behavior, hunter-gatherers, human movement ecology, displacement, Hadza, olive baboon, evolution of language, hunter–gatherers, Medical and Health Sciences, Evolutionary Biology, Biological sciences, Biomedical and clinical sciences
Abstract

Human evolutionary ecology stands to benefit by integrating theory and methods developed in movement ecology, and in turn, to make contributions to the broader field of movement ecology by leveraging our species' distinct attributes. In this paper, we review data and evolutionary models suggesting that major changes in socio-spatial behaviour accompanied the evolution of language. To illustrate and explore these issues, we present a comparison of GPS measures of the socio-spatial behaviour of Hadza hunter-gatherers of northern Tanzania to those of olive baboons (Papio anubis), a comparatively small-brained primate that is also savanna-adapted. While standard spatial metrics show modest differences, measures of spatial diversity, landscape exploration and spatiotemporal displacement between individuals differ markedly. Groups of Hadza foragers rapidly accumulate a vast, diverse knowledge pool about places and things over the horizon, contrasting with the baboon's narrower and more homogeneous pool of ecological information. The larger and more complex socio-spatial world illustrated by the Hadza is one where heightened cognitive abilities for spatial and episodic memory, navigation, perspective taking and communication about things beyond the here and now all have clear value.This article is part of the theme issue 'The spatial-social interface: a theoretical and empirical integration'.

Published
2024

4. Lifestyle and patterns of physical activity in Hadza foragers.

Author

Sayre, M, Anyawire, Mariamu, Paolo, Bunga, Mabulla, Audax, Pontzer, Herman, Wood, Brian, and Raichlen, David

Subjects
Hadza hunter-gatherers, MVPA, accelerometry, physical activity, step counts, Humans, Male, Female, Exercise, Tanzania, Life Style, Sedentary Behavior, Camping
Abstract

OBJECTIVES: Physically active lifestyles are associated with several health benefits. Physical activity (PA) levels are low in post-industrial populations, but generally high throughout life in subsistence populations. The Hadza are a subsistence-oriented foraging population in Tanzania known for being physically active, but it is unknown how recent increases in market integration may have altered their PA patterns. In this study, we examine PA patterns for Hadza women and men who engage in different amounts of traditional foraging. MATERIALS AND METHODS: One hundred and seventy seven Hadza participants (51% female, 19-87 years) wore an Axivity accelerometer (dominant wrist) for ~6 days during dry season months. We evaluated the effects of age, sex, and lifestyle measures on four PA measures that capture different aspects of the PA profile. RESULTS: Participants engaged in high levels of both moderate-intensity PA and inactivity. Although PA levels were negatively associated with age, older participants were still highly active. We found no differences in PA between participants living in more traditional bush camps and those living in more settled village camps. Mobility was positively associated with step counts for female participants, and schooling was positively associated with inactive time for male participants. CONCLUSIONS: The similarity in PA patterns between Hadza participants in different camp types suggests that high PA levels characterize subsistence lifestyles generally. The sex-based difference in the effects of mobility and schooling on PA could be a reflection of the Hadzas gender-based division of labor, or indicate that changes to subsistence-oriented lifestyles impact women and men in different ways.

Published
2023

6. Acoustic regularities in infant-directed speech and song across cultures

Author

Hilton, Courtney B, Moser, Cody J, Bertolo, Mila, Lee-Rubin, Harry, Amir, Dorsa, Bainbridge, Constance M, Simson, Jan, Knox, Dean, Glowacki, Luke, Alemu, Elias, Galbarczyk, Andrzej, Jasienska, Grazyna, Ross, Cody T, Neff, Mary Beth, Martin, Alia, Cirelli, Laura K, Trehub, Sandra E, Song, Jinqi, Kim, Minju, Schachner, Adena, Vardy, Tom A, Atkinson, Quentin D, Salenius, Amanda, Andelin, Jannik, Antfolk, Jan, Madhivanan, Purnima, Siddaiah, Anand, Placek, Caitlyn D, Salali, Gul Deniz, Keestra, Sarai, Singh, Manvir, Collins, Scott A, Patton, John Q, Scaff, Camila, Stieglitz, Jonathan, Cutipa, Silvia Ccari, Moya, Cristina, Sagar, Rohan R, Anyawire, Mariamu, Mabulla, Audax, Wood, Brian M, Krasnow, Max M, and Mehr, Samuel A

Subjects
Cognitive and Computational Psychology, Psychology, Behavioral and Social Science, Pediatric, Humans, Adult, Infant, Speech, Language, Voice, Music, Acoustics, Biomedical and clinical sciences, Health sciences
Abstract

When interacting with infants, humans often alter their speech and song in ways thought to support communication. Theories of human child-rearing, informed by data on vocal signalling across species, predict that such alterations should appear globally. Here, we show acoustic differences between infant-directed and adult-directed vocalizations across cultures. We collected 1,615 recordings of infant- and adult-directed speech and song produced by 410 people in 21 urban, rural and small-scale societies. Infant-directedness was reliably classified from acoustic features only, with acoustic profiles of infant-directedness differing across language and music but in consistent fashions. We then studied listener sensitivity to these acoustic features. We played the recordings to 51,065 people from 187 countries, recruited via an English-language website, who guessed whether each vocalization was infant-directed. Their intuitions were more accurate than chance, predictable in part by common sets of acoustic features and robust to the effects of linguistic relatedness between vocalizer and listener. These findings inform hypotheses of the psychological functions and evolution of human communication.

Published
2022

9. Gendered movement ecology and landscape use in Hadza hunter-gatherers

Author

Wood, Brian M, Harris, Jacob A, Raichlen, David A, Pontzer, Herman, Sayre, Katherine, Sancilio, Amelia, Berbesque, Colette, Crittenden, Alyssa N, Mabulla, Audax, McElreath, Richard, Cashdan, Elizabeth, and Jones, James Holland

Subjects
Biomedical and Clinical Sciences, Health Sciences, Psychology, Life on Land, Africa, Eastern, Animals, Anthropology, Physical, Biological Evolution, Cultural Characteristics, Gender Identity, Gender Role, Motor Activity, Population Density, Population Dynamics, Population Growth, Biomedical and clinical sciences, Health sciences
Abstract

Understanding how gendered economic roles structure space use is critical to evolutionary models of foraging behaviour, social organization and cognition. Here, we examine hunter-gatherer spatial behaviour on a very large scale, using GPS devices worn by Hadza foragers to record 2,078 person-days of movement. Theory in movement ecology suggests that the density and mobility of targeted foods should predict spatial behaviour and that strong gender differences should arise in a hunter-gatherer context. As predicted, we find that men walked further per day, explored more land, followed more sinuous paths and were more likely to be alone. These data are consistent with the ecology of male- and female-targeted foods and suggest that male landscape use is more navigationally challenging in this hunter-gatherer context. Comparisons of Hadza space use with space use data available for non-human primates suggest that the sexual division of labour likely co-evolved with increased sex differences in spatial behaviour and landscape use.

Published
2021

10. Entwined African and Asian genetic roots of medieval peoples of the Swahili coast

Author

Brielle, Esther S., Fleisher, Jeffrey, Wynne-Jones, Stephanie, Sirak, Kendra, Broomandkhoshbacht, Nasreen, Callan, Kim, Curtis, Elizabeth, Iliev, Lora, Lawson, Ann Marie, Oppenheimer, Jonas, Qiu, Lijun, Stewardson, Kristin, Workman, J. Noah, Zalzala, Fatma, Ayodo, George, Gidna, Agness O., Kabiru, Angela, Kwekason, Amandus, Mabulla, Audax Z. P., Manthi, Fredrick K., Ndiema, Emmanuel, Ogola, Christine, Sawchuk, Elizabeth, Al-Gazali, Lihadh, Ali, Bassam R., Ben-Salem, Salma, Letellier, Thierry, Pierron, Denis, Radimilahy, Chantal, Rakotoarisoa, Jean-Aimé, Raaum, Ryan L., Culleton, Brendan J., Mallick, Swapan, Rohland, Nadin, Patterson, Nick, Mwenje, Mohammed Ali, Ahmed, Khalfan Bini, Mohamed, Mohamed Mchulla, Williams, Sloan R., Monge, Janet, Kusimba, Sibel, Prendergast, Mary E., Reich, David, and Kusimba, Chapurukha M.

Published
2023
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11. Sitting, squatting, and the evolutionary biology of human inactivity

Author

Raichlen, David A, Pontzer, Herman, Zderic, Theodore W, Harris, Jacob A, Mabulla, Audax ZP, Hamilton, Marc T, and Wood, Brian M

Subjects
Public Health, Health Sciences, Prevention, Cardiovascular, Clinical Research, Underpinning research, 1.1 Normal biological development and functioning, Metabolic and endocrine, Good Health and Well Being, Accelerometry, Adolescent, Adult, Biological Evolution, Female, Humans, Male, Middle Aged, Muscle, Skeletal, Posture, Sedentary Behavior, Young Adult, sedentary, hunter-gatherer, posture, physical activity, cardiovascular disease
Abstract

Recent work suggests human physiology is not well adapted to prolonged periods of inactivity, with time spent sitting increasing cardiovascular disease and mortality risk. Health risks from sitting are generally linked with reduced levels of muscle contractions in chair-sitting postures and associated reductions in muscle metabolism. These inactivity-associated health risks are somewhat paradoxical, since evolutionary pressures tend to favor energy-minimizing strategies, including rest. Here, we examined inactivity in a hunter-gatherer population (the Hadza of Tanzania) to understand how sedentary behaviors occur in a nonindustrial economic context more typical of humans' evolutionary history. We tested the hypothesis that nonambulatory rest in hunter-gatherers involves increased muscle activity that is different from chair-sitting sedentary postures used in industrialized populations. Using a combination of objectively measured inactivity from thigh-worn accelerometers, observational data, and electromygraphic data, we show that hunter-gatherers have high levels of total nonambulatory time (mean ± SD = 9.90 ± 2.36 h/d), similar to those found in industrialized populations. However, nonambulatory time in Hadza adults often occurs in postures like squatting, and we show that these "active rest" postures require higher levels of lower limb muscle activity than chair sitting. Based on our results, we introduce the Inactivity Mismatch Hypothesis and propose that human physiology is likely adapted to more consistently active muscles derived from both physical activity and from nonambulatory postures with higher levels of muscle contraction. Interventions built on this model may help reduce the negative health impacts of inactivity in industrialized populations.

Published
2020

13. Detecting and mapping the 'ephemeral': magnetometric survey of a Pastoral Neolithic settlement at Luxmanda, Tanzania

Author

Fitton, Tom, Contreras, Daniel A., Gidna, Agness O., Mabulla, Audax Z.P., Prendergast, Mary E., and Grillo, Katherine M.

Subjects
Magnetic anomalies, Archaeology, Anthropology/archeology/folklore
Abstract

Common assumptions about the ephemeral archaeological signature of pastoralist settlements have limited the application of geophysical techniques in the investigation of past herding societies. Here, the authors present a geophysical survey of Luxmanda, Tanzania, the largest-known settlement documented for the Pastoral Neolithic era in eastern Africa (,c. 5000-1200 BP). The results demonstrate the value and potential of fluxgate gradiometry for the identification of magnetic anomalies relating to archaeological features, at a category of site where evidence for habitation was long thought to be undetectable. The study provides comparative data to enable archaeologists to identify loci for future investigations of mobile populations in eastern Africa and elsewhere. Keywords: Africa, Tanzania, geophysical survey, pastoralism, mobility, Introduction Archaeologists worldwide are now applying geochemical, biomolecular and ethnoarchaeological approaches to understand the long-term social and environmental histories of ancient pastoralism (Honeychurch & Makarewicz 2016). Common early assumptions held [...]

Published
2022
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16. Ancient DNA and deep population structure in sub-Saharan African foragers

Author

Lipson, Mark, Sawchuk, Elizabeth A., Thompson, Jessica C., Oppenheimer, Jonas, Tryon, Christian A., Ranhorn, Kathryn L., de Luna, Kathryn M., Sirak, Kendra A., Olalde, Iñigo, Ambrose, Stanley H., Arthur, John W., Arthur, Kathryn J. W., Ayodo, George, Bertacchi, Alex, Cerezo-Román, Jessica I., Culleton, Brendan J., Curtis, Matthew C., Davis, Jacob, Gidna, Agness O., Hanson, Annalys, Kaliba, Potiphar, Katongo, Maggie, Kwekason, Amandus, Laird, Myra F., Lewis, Jason, Mabulla, Audax Z. P., Mapemba, Fredrick, Morris, Alan, Mudenda, George, Mwafulirwa, Raphael, Mwangomba, Daudi, Ndiema, Emmanuel, Ogola, Christine, Schilt, Flora, Willoughby, Pamela R., Wright, David K., Zipkin, Andrew, Pinhasi, Ron, Kennett, Douglas J., Manthi, Fredrick Kyalo, Rohland, Nadin, Patterson, Nick, Reich, David, and Prendergast, Mary E.

Published
2022
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24. On Leopards, Hyenas and Greek Gods

Author

Dominguez-Rodrigo, Manuel, primary, Organista, Elia, additional, Enrique, Baquedano, additional, Uribelarrea, David, additional, Gidna, Agness, additional, and Mabulla, Audax, additional

Published
2024
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27. Early Pleistocene faunivorous hominins were not kleptoparasitic, and this impacted the evolution of human anatomy and socio-ecology

Author

Domínguez-Rodrigo, Manuel, Baquedano, Enrique, Organista, Elia, Cobo-Sánchez, Lucía, Mabulla, Audax, Maskara, Vivek, Gidna, Agness, Pizarro-Monzo, Marcos, Aramendi, Julia, Galán, Ana Belén, Cifuentes-Alcobendas, Gabriel, Vegara-Riquelme, Marina, Jiménez-García, Blanca, Abellán, Natalia, Barba, Rebeca, Uribelarrea, David, Martín-Perea, David, Diez-Martin, Fernando, Maíllo-Fernández, José Manuel, Rodríguez-Hidalgo, Antonio, Courtenay, Lloyd, Mora, Rocío, Maté-González, Miguel Angel, and González-Aguilera, Diego

Published
2021
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36. Pastoral Neolithic Settlement at Luxmanda, Tanzania

Author

Grillo, Katherine M., Prendergast, Mary E., Contreras, Daniel A., Fitton, Tom, Gidna, Agness O., Goldstein, Steven T., Knisley, Matthew C., Langley, Michelle C., and Mabulla, Audax Z. P.

Published
2018

49. Chapter 7 - Conclusions

Author

Cobo-Sánchez, Lucía, Domínguez-Rodrigo, Manuel, Baquedano, Enrique, Mabulla, Audax, Gidna, Agness, and Diez-Martín, Fernando

Published
2024
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