• JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
 
  Bookmark and Share
 
 
Doctoral Thesis
DOI
https://doi.org/10.11606/T.41.2017.tde-26052017-112144
Document
Author
Full name
Lorena Corina Bezerra de Lima
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2016
Supervisor
Committee
Silva, Maria José de Jesus (President)
Amaro, Renata Cecilia
Franco, Francisco Luís
Miyaki, Cristina Yumi
Moraes, Evandro Marsola de
Title in Portuguese
Filogenia e delimitação de espécies no complexo Boa constrictor (Serpentes, Boidae) utilizando marcadores moleculares
Keywords in Portuguese
Boa
Delimitação de espécies
Filogenia
Marcadores moleculares
Abstract in Portuguese
As serpentes que compõem o complexo Boa constrictor apresentam ampla distribuição por toda região Neotropical. A variação morfológica ligada à coloração e às localidades de origem fizeram com que, historicamente, fossem reconhecidas várias subespécies, embora sem consenso na literatura. Estudos prévios desenvolvidos com marcadores moleculares abordando aspectos filogenéticos e filogeográficos indicaram a existência de diversidade críptica em Boa. A fim de investigar as relações filogenéticas (empregando Máxima Parcimônia, Máxima Verossimilhança e Inferência Bayesiana), análises de tempo de divergência e delimitação de espécies (utilizando os métodos Poisson Tree Processes, PTP, e Generalized Mixed Yule Coalescent, GMYC), foram utilizadas sequências dos genes Cytb, ND4 e NTF3, e do íntron de ODC de 217 exemplares, com representantes de 10 subespécies. Os resultados filogenéticos recuperaram Boa como um gênero monofilético e apontaram nove linhagens. Somente as subespécies B. c. occidentalis, B. c. orophias e B. c. nebulosa foram recuperadas como monofiléticas. As análises de delimitação de espécies não recuperam o monofiletismo de Boa, sendo que em PTP foram recuperadas um mínimo de 15 (para o Sul) e máximo de 75 espécies putativas (EPs) e em GMYC foram recuperadas quatro EPs. A estimativa dos tempos de divergência revelou que essas linhagens passaram por um processo de diversificação no Plioceno e Pleistoceno. Esses resultados somados aos dados da literatura permitiram hipotetizar a existência de ao menos cinco linhagens distintas em Boa: B. constrictor (sensu stricto), B. occidentalis, B. imperator, B. orophias e B. nebulosa, cuja diversificação está ligada aos eventos climáticos ocorridos Quaternário e Neógeno eventos geológicos derivados do soerguimento dos Andes
Title in English
Phylogeny and species delimitation in the Boa constrictor complex (Serpentes, Boidae) using molecular markers
Keywords in English
Boa
Molecular markers
Phylogeny
Species delimitation
Abstract in English
Snakes of the complex Boa constrictor are widely distributed in the Neotropical region. Historically, based on morphological variation and locality of origin, several subspecies have been recognized, although there are controversies concerning the number of subspecies. Previous phylogenetic and phylogeographic studies using molecular markers suggested cryptic diversity in Boa. Sequences of Cytb, ND4, NTF3 and ODC of 217 samples, including ten subspecies were used in order to investigate phylogenetic relationships. In this sense, it was used Maximum Parsimony, Maximum Likelihood and Bayesian Inference. Additionally, molecular dating and species delimitation analyses (Poisson Tree Processes, PTP, and Generalized Mixed Yule Coalescent, GMYC) were performed. Phylogenetic studies recovered Boa as monophyletic and nine lineages. Also, B. c. occidentalis, B. c. orophias, and B. c. nebulosi were the only subspecies recovered as monophyletic. Species delimitation analyses did not show Boa as monophyletic: PTP recovered from 15 for the South to 75 putative species considering the whole distribution; GMYC recovered four putative species. Divergence time estimation revealed that lineages have diversified during Pliocene and Pleistocene. These results allowed us to hypothesize at least five distinct lineages: B. constrictor (sensu stricto), B. occidentalis, B. imperator, B. orophias and B. nebulosi, whose diversification is related to climatic events of Quaternary and geological events like uplift of Andes during Neogene
 
WARNING - Viewing this document is conditioned on your acceptance of the following terms of use:
This document is only for private use for research and teaching activities. Reproduction for commercial use is forbidden. This rights cover the whole data about this document as well as its contents. Any uses or copies of this document in whole or in part must include the author's name.
Lorena_Lima.pdf (6.76 Mbytes)
Lorena_Lima_Simp.pdf (1.01 Mbytes)
Publishing Date
2017-06-26
 
WARNING: Learn what derived works are clicking here.
All rights of the thesis/dissertation are from the authors
CeTI-SC/STI
Digital Library of Theses and Dissertations of USP. Copyright © 2001-2024. All rights reserved.