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9mo ago

Microscopic Organism Found in Mono Lake Sheds Light on Early Animal Evolution

UC Berkeley researchers discover choanoflagellate species with unique microbiome, offering insights into ancient life forms

Image
A 3D reconstruction of a spherical colony of 70 choanoflagellates from the newly-named species Barroeca monosierra discovered in Mono Lake. Colonies of these organisms consist of numerous identical cells (cyan), each with flagella (orange) that allow them to propel themselves through the water. This choanoflagellate colony hosts its own microbiome, something never before seen in these organisms.

Overview

  • The newly named species, Barroeca monosierra, is a choanoflagellate found in the harsh conditions of Mono Lake.
  • These microorganisms can form multicellular colonies, similar to early animal embryos.
  • Barroeca monosierra is the first choanoflagellate known to maintain a stable relationship with bacteria.
  • The discovery could help scientists understand the transition from single-celled to multicellular life.
  • Further research is needed to explore the interactions between the choanoflagellates and their microbiomes.