Why Did Ancient Humans Harvest a Plant Only They Could Handle?

🌰 Why Did Ancient Humans Harvest a Plant Only They Could Handle? A seed that can make you violently ill was turned into food people valued. So what did they know that a hungry stranger didn't? TIMESTAMPS 👇 0:00 - The Part You Didn't Watch 1:33 - Dinner Goes Underground 2:48 - Keep the Outside 3:50 - Worth Waiting For 4:52 - What Happened When They Ate It 5:57 - Somebody Else's Kitchen 6:58 - An Ice Age Kitchen 📚 RESEARCH & SOURCES: ▸ The plant — Macrozamia, known around Perth as bayu (zamia). City of Joondalup (2020), "Plants and People in Mooro Country", prepared with the contribution of Noongar Elder Neville Collard: the local species, and the difference between the prepared outer flesh people eat and the kernel they leave. https://www.joondalup.wa.gov.au/awcon... ▸ How it was prepared in the southwest — Asmussen (2011), a comparative ethnobotany of Aboriginal cycad processing, Technical Reports of the Australian Museum 23:147–163: soaking, burial in lined holes, roasting, and the prepared flesh being valued as food. https://doi.org/10.3853/j.1835-4211.2... ▸ Why it is dangerous — cycasin and macrozamin carry a toxic component bound to a sugar; enzymes in the gut can release MAM, which disrupts liver cells. Nishida et al. (1955); Riggs (1954, Australian Journal of Chemistry 7:123–124); Nagasawa et al. (1972, Nature 236:234–235); Shank & Magee (1967, Biochemical Journal 105:521–527). ▸ "Can kill you", scoped. Cycads contain toxins capable of fatal poisoning (Whitelock, "The Cycads", 2002), and severe human cases including deaths are reported for Cycas (Queensland Poisons Information Centre) and for the eastern species Macrozamia communis. ▸ January 1697, near the Swan River — the Dutch expedition's journal, translated in R. H. Major, "Early Voyages to Terra Australis": kernels that tasted like large Dutch beans, violent vomiting about three hours later for the writer and five others, a struggle back to the ship. (2021, Journal of the Royal Society of Western Australia 104:1–3) reproduce the Dutch and identify the kernels as Macrozamia riedlei. ▸ April 1839, north of Perth — George Grey, "Journals of Two Expeditions" (1841), vol. 2: seeds the men collected themselves brought vomiting and dizziness; they recovered, and the next day ate from a local buried store their guide found. https://gutenberg.net.au/ebooks/e0005... ▸ The Ice Age pit — Moya Smith (1996), "Revisiting Pleistocene Macrozamia", Australian Archaeology 42:52–53, revisiting her 1982 Cheetup excavation near Esperance. https://doi.org/10.1080/03122417.1996... ▸ Knowledge held by the people of this country — Lullfitz and Nyungar co-authors (2020), Austral Ecology 45:933–947, on Macrozamia dyeri and occupation, is the model of how this work is done now: with knowledge holders, not about them. https://doi.org/10.1111/aec.12907 ———————————————————— 👍 Like, Subscribe & Hit the Bell for more ❤️ ———————————————————— #ancienthumans #humanevolution #prehistoriclife #westernaustralia #agriculture #food #animation #education #history