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Related Experiment Video

Updated: Aug 28, 2025

Imaging and Analysis of Tissue Orientation and Growth Dynamics in the Developing Drosophila Epithelia During Pupal Stages
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Muscular hydraulics drive larva-polyp morphogenesis.

Anniek Stokkermans1, Aditi Chakrabarti2, Kaushikaram Subramanian3

  • 1Developmental Biology Unit, European Molecular Biology Laboratory, 69117 Heidelberg, Germany; Collaboration for Joint PhD Degree between EMBL and Heidelberg University, Faculty of Biosciences, 69117 Heidelberg, Germany.

Current Biology : CB
|September 17, 2022
PubMed
Summary

Organismal movement and body contractions, driven by muscular hydraulics, significantly influence the development of size and shape in Nematostella vectensis larvae. This study reveals how behavior shapes morphogenesis.

Keywords:
behaviorcnidariacontractilityhydraulicsmorphogenesismotilitymusclespressure

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Area of Science:

  • Developmental biology
  • Biophysics
  • Animal behavior

Background:

  • Organismal development involves coupled changes in form and behavior.
  • The impact of large-scale behaviors like contractility and motility on morphogenesis is poorly understood.

Purpose of the Study:

  • To investigate the mechanistic link between organismal size, shape, and behavior during development.
  • To explore how muscular-hydraulic systems control morphogenesis in Nematostella vectensis.

Main Methods:

  • Quantitative live imaging of developing Nematostella vectensis.
  • Molecular and biophysical experiments.
  • Ethogram generation and theoretical modeling.

Main Results:

  • The muscular-hydraulic system controlling body movement also drives larva-polyp morphogenesis.
  • Organismal size is determined by cavity inflation via fluid uptake.
  • Body shape is constrained by muscular system organization.
  • Distinct size and shape development trajectories were observed in sessile versus motile animals.

Conclusions:

  • Muscular contractility and motility behaviors are key regulators of morphogenesis.
  • Hydraulic pressures generated by muscular systems act as global mechanical regulators coordinating tissue remodeling.