How Fish Develop Pelvic Fin Muscles
Author Information
Author(s): Cole Nicholas J., Hall Thomas E., Don Emily K., Berger Silke, Boisvert Catherine A., Neyt Christine, Ericsson Rolf, Joss Jean, Gurevich David B., Currie Peter D.
Primary Institution: Victor Chang Cardiac Research Institute
Hypothesis
The study investigates the developmental mechanisms of pelvic fin muscle formation in fish and its evolutionary significance.
Conclusion
The pelvic fin musculature of bony fish is generated by a novel morphogenetic process that combines features of both primitive and derived modes of muscle formation.
Supporting Evidence
- The study reveals a stepwise modification in pelvic fin muscle formation from primitive to derived characteristics.
- Pelvic fin muscles in bony fish are generated by a bimodal mechanism involving both epithelial myotomal extension and migratory mesenchymal precursors.
- Somite transplantation in zebrafish confirmed that pelvic fin muscles derive from myotomal extensions.
Takeaway
Fish have special ways to grow their pelvic fin muscles, which help them move better on land. This study shows how these muscles developed over time.
Methodology
The study used a comparative approach and a novel somite transplantation technique in zebrafish to analyze muscle formation.
Digital Object Identifier (DOI)
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