Ronan Lagadec

TL;DR: Elongation of the vertebrate body axis by posterior volumetric growth is linked to increased energy supply and is absent from the externally developing zebrafish embryo.

TL;DR: It is shown that the catshark Scyliorhinus canicula and the lampreys Petromyzon marinus and Lampetra planeri exhibit conserved molecular asymmetries between the left and right developing habenulae, and this support an ancient origin of epithalamic asymmetry.

TL;DR: It is found that apical progenitors and radial migration are present in sharks, and therefore, their presence must be highly conserved throughout evolution.

TL;DR: Comparisons across vertebrates support the conclusion that endoderm is specified in two distinct temporal phases in the catshark as in all major osteichthyan lineages, in line with an ancient origin of a biphasic mode of endoderman specification in gnathostomes.

TL;DR: Characterised neurogenetic asymmetries during habenular development in the catshark Scyliorhinus canicula and addressed the mechanism involved in this process show that mechanisms resulting in an asymmetric, preferential maintenance of neural progenitors act both in the left and the right habenulae, on different cell populations.