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New paper in Journal of Animal Ecology!

Matteo Vecchi and Daniel Stec published a new paper in the Journal of Animal Ecology. The paper concerns anhydrobiosis in tardigrades.

Photo: Daniel Stec. A community of tardigrades seen under a light microscope.


The tiny yet resilient tardigrades have captured the attention of many scientists for their remarkable survival capabilities. Anhydrobiosis allows tardigrades to survive extreme environmental conditions that most other animals cannot. The study introduced a novel index, the anhydrobiotic recovery index (ARI), to measure the anhydrobiotic performance of tardigrade populations. The research aimed to unravel the factors influencing their anhydrobiotic capabilities, comparing the impact of habitat humidity, precipitation, and phylogenetic history.


The most significant driver of anhydrobiotic performance among tardigrades was their shared evolutionary history. This suggests that the ability to endure desiccation is deeply coded in their genetic lineage, playing a substantial role in their survival. An intriguing discovery was the high variability in anhydrobiotic performance, even among closely related species. This variability suggests that many factors contribute to the unique survival abilities of different tardigrade species. The study highlighted the need for further research to understand better the interplay between genetic differences and environmental influences in survival mechanisms.


Unraveling the complexities of anhydrobiotic performance in tardigrades holds promise for shedding light on evolutionary adaptations and ecological interactions in these remarkable microorganisms. As scientists continue to decode these secrets, each discovery brings us closer to understanding the extraordinary mechanisms that allow tardigrades to survive in the harshest of environments.


Read the full paper, here (open access).



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