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Previous issue date: 2017-09-27 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Seirinae ? uma das mais diversas subfam?lias de Collembola, e grande parte dessa diversidade ? devida a Seira Lubbock que possui, aproximadamente, 220 esp?cies reconhecidas. At? o momento, nenhuma filogenia interna foi proposta para o t?xon, o que dificulta a organiza??o do conhecimento para compara??o, descri??o de novas esp?cies e g?neros, al?m da pr?pria compreens?o dos seus padr?es evolutivos. A quetotaxia dorsal ? o principal componente morfol?gico utilizado para distinguir esp?cies, e embora comprovadamente diagn?stico, pode ser vari?vel intraespecificamente. O principal objetivo deste trabalho ? esclarecer as rela??es filogen?ticas entre os Seirinae neotropicais, do ponto de vista molecular e morfol?gico, o que poder? resultar numa melhor organiza??o interna da subfam?lia. Para tanto, foram sequenciadas 27 amostras de diferentes esp?cies de Entomobryidae e uma de Paronellidae. Para as an?lises moleculares, foi extra?do e quantificado o DNA total de um indiv?duo/amostra e bibliotecas foram constru?das e sequenciadas por Next Generation Sequencing utilizando o HiSeq 2000. O genoma mitocondrial (DNAmt) completo
das esp?cies foi reconstru?do atrav?s de an?lises de bioinform?tica utilizando duas metodologias: SOAPdenovo_Trans e MIRA/MITOBim. Duas filogenias foram propostas: uma contendo somente os genomas reconstru?dos neste trabalho e outra complementar, onde foram inclu?dos 11 DNAmt de Collembola disponibilizados em bancos de dados online. As filogenias foram feitas por an?lises Bayesianas utilizando os treze genes codificantes proteicos que correspondem a quase totalidade do DNAmt. Os resultados corroboram com a proposta atual que a ordem Poduromorpha ? a mais basal de Collembola; a ordem Symphypleona aparece como grupo-irm?o de Entomobryomorpha, que apresenta clara divis?o em duas superfam?lias,
Isotomoidea e Entomobryoidea; o posicionamento dos g?neros Lepidocyrtoides Sch?tt e Lepidosira Sch?tt dentro de Entomobryinae corroboram com a mais recente filogenia publicada; a monofilia de Seirinae e seus grandes grupos internos foi comprovada pela primeira vez por dados moleculares com alto apoio nodal; o g?nero Tyrannoseira Bellini & Zeppelini, recentemente descrito, foi validado filogeneticamente; Lepidocyrtinus B?rner foi al?ado a status de g?nero; e tr?s sinon?mias de esp?cies foram propostas; por fim, algumas caracter?sticas morfol?gicas de Seirinae foram identificadas como diagn?sticas e com sinal filogen?tico, como
por exemplo, a quantidade de macroquetas no primeiro segmento abdominal. / Seirinae is one of the most diverse subfamilies of Collembola, and a considerable part of this diversity is comprised by Seira Lubbock, which currently gathers approximately 220 species.
So far no internal phylogeny Seirinae was proposed, what leads to difficulties in the establishment of comparative knowledge, description of new taxa, and also the understanding
of the evolutionary patterns within this taxon. The dorsal chaetotaxy is the main morphological component utilised to distinguish species, and although undoubtedly diagnostic, it can be variable interspecifically. The main aim of this work is to clarify the phylogenetic relations within the Neotropical Seirinae based on both molecular and morphological data, which might result in a better internal organization of the subfamily. For this aim, 27 samples of different species belonging to Entomobryidae and one of Paronellidae were sequenced. As for molecular
analyses genomic DNA of one individual/sample was extracted and quantified and sequencing
libraries were built and sequenced using Next-Generation Sequencing on HiSeq 2000. The whole mitochondrial genome (DNAmt) of the species was reconstructed by two methods: SOAPdenovo_Trans and MIRA/MITOBim. Two phylogenies were then proposed: one containing only genomes reconstructed in this study as well as a complementary one, where 11
Collembola DNAmt available in a public database were also included. The phylogenies were generated through Bayesian analyses using the thirteen protein coding genes that almost correspond to the entire DNAmt. The results corroborate the current proposal which claims the order Poduromorpha as the most basal order of Collembola; the order Symphypleona as the sister-group of Entomobryomorpha, which shows clear division into two superfamilies,
Isotomoidea and Entomobryoidea; the placement of Lepidocyrtoides Sch?tt and Lepidosira Sch?tt genera inside Entomobryinae corroborates the most recently published
phylogeny; the monophyly of the internal groups of Seirinae based on molecular evidence was confirmed for the first time showing high nodal support; Tyrannoseira Bellini & Zeppelini,
recently described, was validated phylogenetically; Lepidocyrtinus B?rner was elevated to
genus status; and three species synonyms were proposed; finally some morphological characteristics of Seirinae were identified as diagnostic and having phylogenetic signal, for
instance, the quantity of macrochaetae on the first abdominal segment.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/24522 |
| Date | 27 September 2017 |
| Creators | Godeiro, Neriv?nia Nunes |
| Contributors | 00990546470, Baseia, Iuri Goulart, 67421199420, Gama, Renata Antonaci, 03893282602, Zeppelini Filho, Douglas, 61205028153, Sulzbacher, Marcelo Aluisio, 96384077000, Lima, S?rgio Maia Queiroz, Bellini, Bruno Cavalcante |
| Publisher | PROGRAMA DE P?S-GRADUA??O EM SISTEM?TICA E EVOLU??O, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | Portuguese |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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