Evolutionary/Comparative Genetics
MicroRNAs provide additional evidence for the traditional Mandibulata hypothesis within the Arthropoda
LI Campbell*, SJ Longhorn, O Rota-Stabelli, MJ Telford, KJ Peterson, D Pisani
*Corresponding author: LI Campbell
Bioinformatics Unit, National University of Ireland, Maynooth, Ireland
F1000 Posters 2010, 1: 196 (poster) [ENGLISH]
Poster [26.99 MB] | Resulting articles
Presented at
Society for Molecular Biology and Evolution 2010 meeting,
4 - 8 Jul 2010, P-S05-03
The aim of this study was to uncover the true evolutionary relationship between the major sub classes within Arthropoda (Crustaceans, Insects, Myriapods, Chelicerates). We wanted to use a new independent source of phylogenetic data, to which we used miRNA conservation across the athropods.
Traditionally, arthropods have been grouped according to two main hypotheses, Mandibulata and Myriochelata. Mandibulata infers that the Crustaceans, insects and myriapods fall inside a single monophyletic group, which has been found extensively through morphology and molecular sequence data, while Myriochelata infers that myriapods and chelicerates are more closely related to one another than either is to Crustaceans or insects, this is found using only molecular sequence data.
The main conclusion was that miRNAs show conservation for two miRNAs that are only within Crustaceans, insects and Myriapods and not in chelicerates. This is strong ground for Mandibulata hypothesis.
The current project aims are now to uncover the evolution of miRNAs within arthropods and also to uncover their developmental and morphological impact to the group.
No relevant conflicts of interest declared.
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