Dyadic inter-group cooperation in shotgun hunting activities in a Congo Basin village

Understanding the dynamics of inter-group cooperation in human adaptation has been the subject of recent empirical and theoretical studies in evolutionary anthropology, beginning to fill gaps in our knowledge of how interactions across political, economic and social domains can - and often do - lead to stable, large-scale cooperation. Here we investigate dyadic intergroup cooperation in shotgun hunting in the Republic of the Congo. In the Congo Basin, inter-group cooperation between foragers and farmers is at the centre of an exchange system maintained by traditional norms and institutions such as fictive kinship. Here, we focused on what factors predict cooperative shotgun hunting exchanges between BaYaka and Yambe. We conducted structured interviews with 48 BaYaka hunters and 18 Yambe men who organise hunts in a village along the Motaba River. We used Bayesian multilevel regression models to investigate the influence of Yambe and BaYaka attributes on probability of dyadic cooperation. We found that BaYaka men's reputations as skilled hunters and their family size each predicted cooperation in shotgun hunting, whereas there was no effect of Yambe attributes (status, wealth, family size). We discuss the results in terms of evolutionary models of men as hunters and inter-group cooperation, as well as biodiversity conservation implications.

Loss of ancestral food practices and perception of its effect on children's health among Inga indigenous grandmothers, Nariño, Colombia

OBJECTIVE

Novel foods and dietary practices, a lack of available land, and displacement by armed conflict have affected the ancestral food traditions practiced by the Inga community in Aponte, in Nariño, Colombia. These factors have led to problems with food security and malnutrition, which have impacted the growth and development of children. Therefore, this study is aimed at identifying the changes in ancestral food practices reported by Inga grandmothers, and the possibility of recuperating them in order to improve children's health.

METHOD

A qualitative study was conducted that included 24 mothers with children under five years old and 25 grandmothers in nine Inga communities. Participants were recruited using snowball sampling. Free listing was used to identify changes in food patterns, and semi-structured interviews were conducted with 20 grandmothers to delve deeper into the subject. A translator of the Inga language facilitated communication, and the Inga researcher validated the translation using audio recordings. Each interview was transcribed and categorized for the purpose of analysis, using the NVivo 12 software.

RESULTS

Free lists showed changes from a corn-based to a rice-based diet and a wide variety of non-ancestral food products. According to the grandmothers, "tiendas" have replaced traditional foods with those that are easy to prepare, which are attractive to mothers as well as to the children because of their flavor. Ancestral practices such as grinding, peeling, and log cooking are being abandoned. Government programs and daycare have incorporated new food that compete with traditional ones, with no clear evidence of an intercultural approach. Added to this is the dismissal by young mothers of the knowledge held by their grandmothers, which hinders the continuation of traditions.

CONCLUSIONS

The findings suggest that it is necessary to prevent the loss of the Inga food culture, and policies need to be created that promote and protect ancestral knowledge and that help to regain the value of the "chagra" farming system, with the support of elders, authorities who are recognized by the community, and government technicians, as recommended by the grandmothers who participated in this study.

The Influence of Markets on the Nutrition Transition of Hunter-Gatherers: Lessons from the Western Amazon

For many centuries, hunter-gatherer societies relied on subsistence practices and traditional diets. However, forces of globalization have increased market involvement, thereby fueling the nutrition transition of hunter-gatherer societies. We review the academic literature on market involvement of hunter-gatherer societies in the Western Amazon and its consequences on diet, health and well-being. First, we elaborate on four main determinants of market involvement (accessibility, monetary income, wild meat trade and social capital), showing how each determinant draws individuals toward or away from markets. Thereafter, we discuss how these determinants alter diet, health and well-being. Our results add to the understanding of the complex relations between market involvement, dietary change, health and well-being of indigenous societies. Furthermore, they bring to light that additional research is needed on the topic to support decision-makers and help preserve indigenous values.