Telford, M;
Rota-Stabelli, O;
Pisani, D;
(2018)
Phylo-Evo-Devo, tardigrades and insights into the evolution of segmentation.
In: Fusco, G, (ed.)
Perspectives on Evolutionary and Developmental Biology Essays for Alessandro Minelli.
Padova University Press: Padua, Italy.
Preview |
Text
9788869381409-oa.pdf - Published Version Download (237kB) | Preview |
Abstract
!e concept of phylo-evo-devo highlights the bene"ts of reciprocal illumination between studies of phylogeny and of developmental biology when studying character evolution. Here we consider the case of the evolution of a segmented body plan within the major animal clade of Ecdysozoa. Speci"cally, we consider developmental studies supporting the homology of segmentation between Arthropoda, Onychophora and Tardigrada. In parallel, we examine inconclusive results regarding the possible phylogenetic a#liations of the tardigrades. If tardigrade arthropod and onychophoran segmentation is indeed homologous, molecular phylogenies supporting a sister group relationship between tardigrades and nematodes imply a loss of segmentation in the la$er. To progress, we need both fully resolved phylogenies, and more developmental studies of ‘lesser’ groups including tardigrades and even more obscure, segmented ecdysozoan clades such as the Kinorhyncha (mud dragons).
Archive Staff Only
 |
View Item |
