Evolutionary pathways driven by female mate choice : the curious case of the squalius alburnoides allopolyploid fish complex

Bibliographic Details
Main Author: Morgado-Santos, Miguel
Publication Date: 2018
Language: eng
Source: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Download full: http://hdl.handle.net/10451/35020
Summary: Tese de doutoramento, Biologia (Etologia), Universidade de Lisboa, Faculdade de Ciências, 2018
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network_name_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
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spelling Evolutionary pathways driven by female mate choice : the curious case of the squalius alburnoides allopolyploid fish complexTeses de doutoramento - 2018Domínio/Área Científica::Ciências Naturais::Ciências BiológicasTese de doutoramento, Biologia (Etologia), Universidade de Lisboa, Faculdade de Ciências, 2018Many asexual animals are sexual parasites that reproduce with sympatric species, leading to genetic, ecological and behavioural challenges. Several mechanisms allow the coexistence of sexuals and asexuals, and, over time, the latter may regain sexual reproduction and develop an independent reproductive dynamics, paving the way to the arising of new species through hybrid speciation. Mate choice may play a relevant role in all evolutionary stages of asexual organisms, either contributing to their persistence in hybrid state or routing them towards hybrid speciation. Here, we studied mate choice in the allopolyploid cyprinid Squalius alburnoides, namely its role in driving the evolutionary pathways of this hybrid complex. Bridging together genetic, theoretical and experimental approaches, we aimed at assessing: a) the role of mate choice in driving population stability or routing populations towards hybrid speciation; b) the influence of egg allocation, fertilization rate and offspring survival in shaping the reproductive dynamics and genomotype composition of populations; and c) the gameplay between mate choice by hybrid females and genetic introgression and variability. In the one hand, mate choice by hybrid females seems able to uphold the persistence of populations in their hybrid state by maintaining the reproductive dynamics between the interdependent genomotypes and sympatric congeneric species, and also by guaranteeing the maintenance of high genetic variability. On the other hand, when particular conditions are met, mate choice by hybrid females may also route populations towards hybrid speciation, namely via tetraploidization. The findings reported herein also include the first ever described case of naturally occurring androgenesis in vertebrates. In a general perspective, Squalius alburnoides’ hard-to-combine features challenge even the most conservative views about the role of hybridization in species’ diversification. Studying this allopolyploid complex is like looking at a snapshot of evolution and, undoubtedly, a privilege to every passionate evolutionary biologist.Vicente, Luís A., 1955-Magalhães, Maria Filomena, 1964-Pereira, Maria João Collares, 1952-Repositório da Universidade de LisboaMorgado-Santos, Miguel2018-10-12T14:23:43Z201820182018-01-01T00:00:00Zdoctoral thesisinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10451/35020TID:101325010enginfo:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2025-03-17T13:57:56Zoai:repositorio.ulisboa.pt:10451/35020Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-29T02:59:12.161467Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv Evolutionary pathways driven by female mate choice : the curious case of the squalius alburnoides allopolyploid fish complex
title Evolutionary pathways driven by female mate choice : the curious case of the squalius alburnoides allopolyploid fish complex
spellingShingle Evolutionary pathways driven by female mate choice : the curious case of the squalius alburnoides allopolyploid fish complex
Morgado-Santos, Miguel
Teses de doutoramento - 2018
Domínio/Área Científica::Ciências Naturais::Ciências Biológicas
title_short Evolutionary pathways driven by female mate choice : the curious case of the squalius alburnoides allopolyploid fish complex
title_full Evolutionary pathways driven by female mate choice : the curious case of the squalius alburnoides allopolyploid fish complex
title_fullStr Evolutionary pathways driven by female mate choice : the curious case of the squalius alburnoides allopolyploid fish complex
title_full_unstemmed Evolutionary pathways driven by female mate choice : the curious case of the squalius alburnoides allopolyploid fish complex
title_sort Evolutionary pathways driven by female mate choice : the curious case of the squalius alburnoides allopolyploid fish complex
author Morgado-Santos, Miguel
author_facet Morgado-Santos, Miguel
author_role author
dc.contributor.none.fl_str_mv Vicente, Luís A., 1955-
Magalhães, Maria Filomena, 1964-
Pereira, Maria João Collares, 1952-
Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Morgado-Santos, Miguel
dc.subject.por.fl_str_mv Teses de doutoramento - 2018
Domínio/Área Científica::Ciências Naturais::Ciências Biológicas
topic Teses de doutoramento - 2018
Domínio/Área Científica::Ciências Naturais::Ciências Biológicas
description Tese de doutoramento, Biologia (Etologia), Universidade de Lisboa, Faculdade de Ciências, 2018
publishDate 2018
dc.date.none.fl_str_mv 2018-10-12T14:23:43Z
2018
2018
2018-01-01T00:00:00Z
dc.type.driver.fl_str_mv doctoral thesis
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10451/35020
TID:101325010
url http://hdl.handle.net/10451/35020
identifier_str_mv TID:101325010
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron:RCAAP
instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron_str RCAAP
institution RCAAP
reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
repository.mail.fl_str_mv info@rcaap.pt
_version_ 1833601553156538368

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