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Unraveling Hydra: A Tale of Evolutionary Wonders and Regeneration Marvels

Explore the fascinating world of Hydra, an emerging model system in phylogeny, with a rich history dating back to Abraham Trembley in 1744. From its unique morphology to asexual reproduction by budding and incredible regenerative capacities, Hydra offers insights into evolutionary transitions, pattern formations, stem cells, and more. Discover what we can learn from Hydra's phylogeny and its significance at the base of metazoan phyla.

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Unraveling Hydra: A Tale of Evolutionary Wonders and Regeneration Marvels

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  1. Hydra– Emerging Model System

  2. Phylogeny

  3. History Abraham Trembley (1744) Mémoires pour servir à l'histoire d'un genre de polypes d'eau douce, Gebr. Verbeek, Leiden

  4. Hydra vulgarisInd-Pune Phylum : Cnidaria Class : Hydrozoa Family : Hydridae Genus : Hydra Scale bar = 2.5 mm

  5. General Morphology of Hydra

  6. Stem Cells

  7. Types of Nematocysts Scale bar = 5μm

  8. Asexual Reproduction by Budding Scale bar = 0.1mm

  9. Regeneration Capacity of Hydra Longitudinal cut Traverse cut Trisection

  10. Tissue Dynamics

  11. Genome 2n=30 Genome Size ~1.3 G bp Genome Assemblies –H.magnipapillata, H.vulgaris Ind-Pune (Adapted from Anokhin et.al., 2010)

  12. What we can learn from Hydra Phylogeny (At the base of metazoan phyla) Evolutionary transition (body axis, germ layers, gonads, cell types) Pattern formation (peculiar tissue dynamics make hydra a perpetual embryo) Regeneration, stem cells

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