Hafting with beeswax in the Final Palaeolithic: a barbed point from Bergkamen

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Abstract

During the Last Glacial Maximum (LGM), much of the familiar insect fauna of Northern Europe today was confined to the warmer areas south of the Alps. Chemical and microscopic analysis of hafting residues on a Final Palaeolithic barbed point from Westphalia in Germany has, for the first time, yielded evidence for the use of beeswax as a major component of adhesive during the later stages of the LGM. Analysis also confirmed that the beeswax was tempered with crushed charcoal. AMS dating of the Bergkamen barbed point suggests direct association with the Final Pleistocene Federmessergruppen, approximately 13000 years ago. Furthermore, the adhesive provides the first direct evidence of the honeybee, Apis mellifera, in Europe following the LGM.

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A worldwide survey of genome sequence variation provides insight into the evolutionary history of the honeybee Apis mellifera.

Matthew T. Webster, Bjørn Dahle, Mike Allsopp … (2014)

The honeybee Apis mellifera has major ecological and economic importance. We analyze patterns of genetic variation at 8.3 million SNPs, identified by sequencing 140 honeybee genomes from a worldwide sample of 14 populations at a combined total depth of 634×. These data provide insight into the evolutionary history and genetic basis of local adaptation in this species. We find evidence that population sizes have fluctuated greatly, mirroring historical fluctuations in climate, although contemporary populations have high genetic diversity, indicating the absence of domestication bottlenecks. Levels of genetic variation are strongly shaped by natural selection and are highly correlated with patterns of gene expression and DNA methylation. We identify genomic signatures of local adaptation, which are enriched in genes expressed in workers and in immune system- and sperm motility-related genes that might underlie geographic variation in reproduction, dispersal and disease resistance. This study provides a framework for future investigations into responses to pathogens and climate change in honeybees.

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From the Cover: Implications for complex cognition from the hafting of tools with compound adhesives in the Middle Stone Age, South Africa.

Lyn Wadley, Tamaryn Hodgskiss, Michael Grant (2009)

Compound adhesives made from red ochre mixed with plant gum were used in the Middle Stone Age (MSA), South Africa. Replications reported here suggest that early artisans did not merely color their glues red; they deliberately effected physical transformations involving chemical changes from acidic to less acidic pH, dehydration of the adhesive near wood fires, and changes to mechanical workability and electrostatic forces. Some of the steps required for making compound adhesive seem impossible without multitasking and abstract thought. This ability suggests overlap between the cognitive abilities of modern people and people in the MSA. Our multidisciplinary analysis provides a new way to recognize complex cognition in the MSA without necessarily invoking the concept of symbolism.