A phylogeny of 8104 actinopterygian fish species or how to synthesize centuries of data in a single analysis

MIRANDE, JUAN MARCOS

Buenos Aires

Congreso; XXXV Meeting of the Willi Hennig Society; 2016

Museo Argentino Bernardino Rivadavia & Willi Hennig Society

p { margin-bottom: 0.25cm; direction: ltr; color: rgb(0, 0, 0); line-height: 120%; }p.western { font-family: "Liberation Serif","Times New Roman",serif; font-size: 12pt; }p.cjk { font-family: "AR PL New Sung"; font-size: 12pt; }p.ctl { font-family: "Droid Sans Devanagari"; font-size: 12pt; }This analysisevaluates the phylogeny of ray-finned fishes (Actinopterygii)combining most available information (44 markers from nuclear andmitochondrial DNA and 274 morphological characters). The molecularpartition of the dataset was produced through a pipeline (Gb-to-TNT)that allows the fast building of large matrices from GenBank format. The analyzed dataset has 8104 species, including representatives ofall orders and 95% of the 475 families of Actinopterygii, being themost diverse phylogenetic dataset analyzed to date both for theActinoperygii as for most families and orders of this clade. Morphological characters are analyzed for the first time in aphylogenetic analysis of fishes containing such large number ofspecies. Analyzed morphological characters are features known forfamilies or orders since many years, which can be unequivocally codedfrom data on literature. Thus, in this respect the present analysisis a synthesis of the morphological data generated in decades orcenturies. Analyses are by parsimony under several weightingschemes. General results agree with previous classifications,especially in groups with better gene sampling and those long thought(from morphological evidence) to be monophyletic. Many clades havelow support and some orders are not recovered as monophyletic units. Inclusion of morphological characters is shown to be feasible andvaluable in large-scale analyses. Additional data and studies onhomologies are needed to obtain synapomorphies and diagnoses for mostclades.