Marine Model Organisms for Mechanobiology Studies

Area of Science:

• Evolutionary developmental biology (evo-devo)
• Mechanobiology
• Developmental biology

Background:

• Marine invertebrates have been vital model organisms for over a century.
• Their large eggs, external fertilization, and accessible development facilitate early embryological studies.

Purpose of the Study:

• To provide a historical perspective on marine invertebrates in embryo mechanics research.
• To highlight their contributions to understanding cortical, cytoplasmic, and tissue mechanics.
• To examine the evolution of blastula shapes and cleavage patterns.

Main Methods:

• Historical review of research using marine invertebrates.
• Analysis of key contributions to developmental mechanics.
• Examination of comparative embryology and morphogenesis.

Main Results:

• Marine invertebrates have significantly advanced understanding of early development and mechanics.
• A dichotomy exists between compact and hollow embryos, with compact forms potentially canalized in certain taxa.
• These models are essential for studying morphogenesis and the evolution of mechanical processes.

Conclusions:

• Marine invertebrates remain indispensable for evo-devo and mechanobiology.
• Advances in imaging and genetic tools enhance their utility.
• They provide a comparative framework for understanding the evolution of biological and mechanical processes across metazoans.