Hybrid Speciation in a Marine Mammal: The Clymene Dolphin (Stenella clymene)
Autor(a) principal: | |
---|---|
Data de Publicação: | 2014 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10451/45571 |
Resumo: | Natural hybridization may result in the exchange of genetic material between divergent lineages and even the formation of new taxa. Many of the Neo-Darwinian architects argued that, particularly for animal clades, natural hybridization was maladaptive. Recent evidence, however, has falsified this hypothesis, instead indicating that this process may lead to increased biodiversity through the formation of new species. Although such cases of hybrid speciation have been described in plants, fish and insects, they are considered exceptionally rare in mammals. Here we present evidence for a marine mammal, Stenella clymene, arising through natural hybridization. We found phylogenetic discordance between mitochondrial and nuclear markers, which, coupled with a pattern of transgressive segregation seen in the morphometric variation of some characters, support a case of hybrid speciation. S. clymene is currently genetically differentiated from its putative parental species, Stenella coerueloalba and Stenella longisrostris, although low levels of introgressive hybridization may be occurring. Although non-reticulate forms of evolution, such as incomplete lineage sorting, could explain our genetic results, we consider that the genetic and morphological evidence taken together argue more convincingly towards a case of hybrid speciation. We anticipate that our study will bring attention to this important aspect of reticulate evolution in non-model mammal species. The study of speciation through hybridization is an excellent opportunity to understand the mechanisms leading to speciation in the context of gene flow. |
id |
RCAP_f3a5f521b8feca4661d8bb43aa26a9e8 |
---|---|
oai_identifier_str |
oai:repositorio.ul.pt:10451/45571 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
spelling |
Hybrid Speciation in a Marine Mammal: The Clymene Dolphin (Stenella clymene)AnimalsAquatic OrganismsBayes TheoremCell NucleusCytochromes bDNA, MitochondrialDolphinsFloridaGenetic LociGenetic VariationHaplotypesPhylogenySkullSpecies SpecificityGenetic SpeciationHybridization, GeneticNatural hybridization may result in the exchange of genetic material between divergent lineages and even the formation of new taxa. Many of the Neo-Darwinian architects argued that, particularly for animal clades, natural hybridization was maladaptive. Recent evidence, however, has falsified this hypothesis, instead indicating that this process may lead to increased biodiversity through the formation of new species. Although such cases of hybrid speciation have been described in plants, fish and insects, they are considered exceptionally rare in mammals. Here we present evidence for a marine mammal, Stenella clymene, arising through natural hybridization. We found phylogenetic discordance between mitochondrial and nuclear markers, which, coupled with a pattern of transgressive segregation seen in the morphometric variation of some characters, support a case of hybrid speciation. S. clymene is currently genetically differentiated from its putative parental species, Stenella coerueloalba and Stenella longisrostris, although low levels of introgressive hybridization may be occurring. Although non-reticulate forms of evolution, such as incomplete lineage sorting, could explain our genetic results, we consider that the genetic and morphological evidence taken together argue more convincingly towards a case of hybrid speciation. We anticipate that our study will bring attention to this important aspect of reticulate evolution in non-model mammal species. The study of speciation through hybridization is an excellent opportunity to understand the mechanisms leading to speciation in the context of gene flow.PLoSRepositório da Universidade de LisboaAmaral, Ana RitaLovewell, GretchenMM, CoelhoAmato, GeorgeRosenbaum, Howard C.2020-12-28T15:27:30Z20142014-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10451/45571eng10.1371/journal.pone.0083645info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-11-08T16:47:28Zoai:repositorio.ul.pt:10451/45571Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:57:57.910236Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Hybrid Speciation in a Marine Mammal: The Clymene Dolphin (Stenella clymene) |
title |
Hybrid Speciation in a Marine Mammal: The Clymene Dolphin (Stenella clymene) |
spellingShingle |
Hybrid Speciation in a Marine Mammal: The Clymene Dolphin (Stenella clymene) Amaral, Ana Rita Animals Aquatic Organisms Bayes Theorem Cell Nucleus Cytochromes b DNA, Mitochondrial Dolphins Florida Genetic Loci Genetic Variation Haplotypes Phylogeny Skull Species Specificity Genetic Speciation Hybridization, Genetic |
title_short |
Hybrid Speciation in a Marine Mammal: The Clymene Dolphin (Stenella clymene) |
title_full |
Hybrid Speciation in a Marine Mammal: The Clymene Dolphin (Stenella clymene) |
title_fullStr |
Hybrid Speciation in a Marine Mammal: The Clymene Dolphin (Stenella clymene) |
title_full_unstemmed |
Hybrid Speciation in a Marine Mammal: The Clymene Dolphin (Stenella clymene) |
title_sort |
Hybrid Speciation in a Marine Mammal: The Clymene Dolphin (Stenella clymene) |
author |
Amaral, Ana Rita |
author_facet |
Amaral, Ana Rita Lovewell, Gretchen MM, Coelho Amato, George Rosenbaum, Howard C. |
author_role |
author |
author2 |
Lovewell, Gretchen MM, Coelho Amato, George Rosenbaum, Howard C. |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Repositório da Universidade de Lisboa |
dc.contributor.author.fl_str_mv |
Amaral, Ana Rita Lovewell, Gretchen MM, Coelho Amato, George Rosenbaum, Howard C. |
dc.subject.por.fl_str_mv |
Animals Aquatic Organisms Bayes Theorem Cell Nucleus Cytochromes b DNA, Mitochondrial Dolphins Florida Genetic Loci Genetic Variation Haplotypes Phylogeny Skull Species Specificity Genetic Speciation Hybridization, Genetic |
topic |
Animals Aquatic Organisms Bayes Theorem Cell Nucleus Cytochromes b DNA, Mitochondrial Dolphins Florida Genetic Loci Genetic Variation Haplotypes Phylogeny Skull Species Specificity Genetic Speciation Hybridization, Genetic |
description |
Natural hybridization may result in the exchange of genetic material between divergent lineages and even the formation of new taxa. Many of the Neo-Darwinian architects argued that, particularly for animal clades, natural hybridization was maladaptive. Recent evidence, however, has falsified this hypothesis, instead indicating that this process may lead to increased biodiversity through the formation of new species. Although such cases of hybrid speciation have been described in plants, fish and insects, they are considered exceptionally rare in mammals. Here we present evidence for a marine mammal, Stenella clymene, arising through natural hybridization. We found phylogenetic discordance between mitochondrial and nuclear markers, which, coupled with a pattern of transgressive segregation seen in the morphometric variation of some characters, support a case of hybrid speciation. S. clymene is currently genetically differentiated from its putative parental species, Stenella coerueloalba and Stenella longisrostris, although low levels of introgressive hybridization may be occurring. Although non-reticulate forms of evolution, such as incomplete lineage sorting, could explain our genetic results, we consider that the genetic and morphological evidence taken together argue more convincingly towards a case of hybrid speciation. We anticipate that our study will bring attention to this important aspect of reticulate evolution in non-model mammal species. The study of speciation through hybridization is an excellent opportunity to understand the mechanisms leading to speciation in the context of gene flow. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014 2014-01-01T00:00:00Z 2020-12-28T15:27:30Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10451/45571 |
url |
http://hdl.handle.net/10451/45571 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1371/journal.pone.0083645 |
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.publisher.none.fl_str_mv |
PLoS |
publisher.none.fl_str_mv |
PLoS |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
|
_version_ |
1799134524670476288 |