Cannibalistic supergiant cells discovered in ciliate Euplotes gigatrox
By
Patrick J. Keeling
Summary
This article reports on a scientific discovery in the ciliate Euplotes gigatrox, a microbial eukaryote (protist). Researchers found that in clonal populations, a small number of cells can develop into cannibalistic "supergiants" that dramatically change size, shape, and behavior—transitioning from filter feeders to raptorial predators that consume their own kin. This developmental process involves phenotypic tradeoffs and regulatory loops consistent with a bet-hedging mechanism adapted to fluctuating environmental conditions. The finding challenges traditional developmental biology paradigms, which typically focus on multicellular organisms.
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Key quotes
· 3 pulleda small number of cells can develop into cannibalistic 'supergiants' that drastically change size, shape, and behavior
transitioning from filter feeders to raptorial predators that can consume their kin
This process involves phenotypic tradeoffs and a system of regulatory loops consistent with a bet-hedging mechanism tuned to fluctuating environmental conditions
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