Caledochytrium aldermanii microbe shows unique reproductive method

Researchers in Scotland have identified a unique reproductive method in a microscopic marine microbe named Caledochytrium aldermanii. Part of the Labyrinthulomycetes group, these organisms act as natural recyclers in marine environments by breaking down dead organic matter.

According to Professor Peter Morris of Heriot-Watt University, these cells do not undergo simple fission. Instead, a large internal cavity forms within the parent cell where new daughter cells develop. In some instances, the next generation begins growing within the daughter cells before the parent cell even ruptures to release them, a phenomenon researchers compared to ‘pregnant grandmothers.’

The study, published in the journal Protist, utilized electron microscopy to capture this process. Researcher Jane Polglase noted that the discovery was made possible by combining genetic testing with intensive morphological and behavioral studies. Additionally, the microbe creates an ectoplasmic network that aids in movement and nutrition, which eventually provides proteins and lipids to the broader marine food chain.