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Embryo Injections for CRISPR-Mediated Mutagenesis in the Ant Harpegnathos saltator

Embryo Injections for CRISPR-Mediated Mutagenesis in the Ant Harpegnathos saltator

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Evolution: return of the ant supersoldiers.

Benjamin Prud'homme¹, Nicolas Gompel

¹Aix-Marseille Univ and Institut de Biologie du Développement de Marseille-Luminy, CNRS UMR 7288, case 907, Parc scientifique de Luminy, 13288 Marseille cedex 9, France. benjamin.prudhomme@univ-amu.fr

Current Biology : CB

|March 10, 2012

Summary

Pheidole ants possess an ancient ability to evolve specialized

Area of Science:

Evolutionary Biology
Developmental Biology
Entomology

Background:

The Pheidole genus of ants exhibits remarkable diversity in worker morphology.
The evolution of soldier subcastes in ants is a key area of research in social insect evolution.

Purpose of the Study:

To investigate the evolutionary origins and genetic basis of the soldier subcaste in Pheidole ants.
To understand the developmental mechanisms underlying the formation of 'supersoldiers'.

Main Methods:

Comparative genomics across Pheidole species.
Larval development and gene expression analysis.
Phylogenetic analysis to trace the evolution of soldier traits.

Main Results:

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Molecular Evolution of the Tre Recombinase

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A conserved ancient developmental pathway underlies soldier formation in Pheidole.

Recurrent evolution of the soldier subcaste is facilitated by this latent developmental potential.

Specific genetic loci associated with soldier development were identified.

Conclusions:

The capacity to form soldier ants is an ancient trait within the Pheidole lineage.
This developmental plasticity allows for repeated, independent evolution of soldier subcastes across different species.
Understanding this potential offers insights into the evolution of complex social structures.