Molecular identification and Phylogenomic analysis of Characinae (Actinopterygii: Characiformes: Characidae)
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| Author(s): |
Camila da Silva de Souza
Total Authors: 1
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| Document type: | Doctoral Thesis |
| Press: | Botucatu. 2022-03-22. |
| Institution: | Universidade Estadual Paulista (Unesp). Instituto de Biociências. Botucatu |
| Defense date: | 2022-02-21 |
| Advisor: | Claudio de Oliveira; Bruno Francelino de Melo |
| Abstract | |
Characinae is one of the most speciose subfamilies of Characidae and widely distributed throughout South and Central America. The subfamily contains small to medium-sized species that adopt distinct feeding strategies as carnivory, omnivory and lepidophagy. Phylogenetic relationships within the Characinae and with other subfamilies have been subject of a few morphological studies, although none hypothesis included a representative number of Characinae species using either morphological or molecular characters. Furthermore, the proposed hypotheses still present inconsistencies at intergeneric and interspecific levels. In this context, the present study aimed to test the hypotheses of phylogenetic relationships of the subfamily Characinae through phylogenomic analyzes using ultraconserved elements (UCEs) and to generate a barcode DNA genetic database for molecular identification of Characinae. The results of the phylogenetic analyses corroborate the morphological hypothesis about the monophyly of Characinae and reveal new hypotheses of intergeneric and interspecific relationships. Based on the phylogeny obtained, we analyzed the origin, diversification, and the evolution of body size and body shape. The results of molecular identification recognized a previously underestimated diversity that should contribute to the expansion of knowledge about the diversity of Characinae. (AU) | |
| FAPESP's process: | 17/06551-0 - Characinae (Actinopterygii: Characiformes: Characidae): molecular identification and interspecific phylogenetic relationships |
| Grantee: | Camila da Silva de Souza |
| Support Opportunities: | Scholarships in Brazil - Doctorate |