Different diversity-dependent declines in speciation rate unbalances species richness in terrestrial slugs
Autor(a) principal: | |
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Data de Publicação: | 2004 |
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/10400.1/11519 |
Resumo: | Two genera of terrestrial slugs (Arion and Geomalacus) display a striking disproportion in species richness in the Iberian Peninsula. While there are 17 Iberian endemic species in Arion, morphological criteria only recognize four species within Geomalacus. Sequence data were used to test whether these differences could result from: (1) cryptic diversity within Geomalacus; (2) an earlier origin for Arion (older clades are expected to accumulate more species); (3) distinct patterns of diversification rates (higher initial speciation rates in Arion), and (4) some combination of the above factors (e.g., an older clade with higher speciation rates). Species delimitation tests based on mitochondrial and nuclear data revealed eight cryptic lineages within Geomalacus that lessened the asymmetry; nevertheless, the disparity required further investigation. No meaningful differences in crown group ages of each recovered clade were found. Regardless the different premises of the two equally plausible diversification models (similar initial speciation rates vs. higher initial speciation rates in Geomalacus), both coincide on diversity-dependent diversification for the two groups but weaker rate declines in Arion best explains the observed asymmetry in species richness. Also, the broader environmental tolerance combined with a faster dispersal and wider distribution may have represented an evolutionary advantage for Arion. |
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Different diversity-dependent declines in speciation rate unbalances species richness in terrestrial slugsMolecular PhylogeniesDiversification ratesMaximum-LikelihoodGene treesPulmonataDnaGastropodaArionidaeMolluscaDelimitationTwo genera of terrestrial slugs (Arion and Geomalacus) display a striking disproportion in species richness in the Iberian Peninsula. While there are 17 Iberian endemic species in Arion, morphological criteria only recognize four species within Geomalacus. Sequence data were used to test whether these differences could result from: (1) cryptic diversity within Geomalacus; (2) an earlier origin for Arion (older clades are expected to accumulate more species); (3) distinct patterns of diversification rates (higher initial speciation rates in Arion), and (4) some combination of the above factors (e.g., an older clade with higher speciation rates). Species delimitation tests based on mitochondrial and nuclear data revealed eight cryptic lineages within Geomalacus that lessened the asymmetry; nevertheless, the disparity required further investigation. No meaningful differences in crown group ages of each recovered clade were found. Regardless the different premises of the two equally plausible diversification models (similar initial speciation rates vs. higher initial speciation rates in Geomalacus), both coincide on diversity-dependent diversification for the two groups but weaker rate declines in Arion best explains the observed asymmetry in species richness. Also, the broader environmental tolerance combined with a faster dispersal and wider distribution may have represented an evolutionary advantage for Arion.FCT (Fundacao para a Ciencia e Tecnologia, Portugal) [SFRH/BPD/109685/2015]; FSE (Fundo Social Europeu). [SFRH/BD/30024/2006]; FCT strategic plan [UID/Multi/04326/2013]Nature Publishing GroupSapientiaLopes Da Cunha, ReginaPatrao, ClaudiaCastilho, Rita2018-12-07T14:53:26Z2004-062004-06-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.1/11519eng2045-232210.1038/s41598-017-16417-yinfo: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:RCAAP2023-07-24T10:23:20Zoai:sapientia.ualg.pt:10400.1/11519Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:03:00.921145Repositório 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 |
Different diversity-dependent declines in speciation rate unbalances species richness in terrestrial slugs |
title |
Different diversity-dependent declines in speciation rate unbalances species richness in terrestrial slugs |
spellingShingle |
Different diversity-dependent declines in speciation rate unbalances species richness in terrestrial slugs Lopes Da Cunha, Regina Molecular Phylogenies Diversification rates Maximum-Likelihood Gene trees Pulmonata Dna Gastropoda Arionidae Mollusca Delimitation |
title_short |
Different diversity-dependent declines in speciation rate unbalances species richness in terrestrial slugs |
title_full |
Different diversity-dependent declines in speciation rate unbalances species richness in terrestrial slugs |
title_fullStr |
Different diversity-dependent declines in speciation rate unbalances species richness in terrestrial slugs |
title_full_unstemmed |
Different diversity-dependent declines in speciation rate unbalances species richness in terrestrial slugs |
title_sort |
Different diversity-dependent declines in speciation rate unbalances species richness in terrestrial slugs |
author |
Lopes Da Cunha, Regina |
author_facet |
Lopes Da Cunha, Regina Patrao, Claudia Castilho, Rita |
author_role |
author |
author2 |
Patrao, Claudia Castilho, Rita |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Sapientia |
dc.contributor.author.fl_str_mv |
Lopes Da Cunha, Regina Patrao, Claudia Castilho, Rita |
dc.subject.por.fl_str_mv |
Molecular Phylogenies Diversification rates Maximum-Likelihood Gene trees Pulmonata Dna Gastropoda Arionidae Mollusca Delimitation |
topic |
Molecular Phylogenies Diversification rates Maximum-Likelihood Gene trees Pulmonata Dna Gastropoda Arionidae Mollusca Delimitation |
description |
Two genera of terrestrial slugs (Arion and Geomalacus) display a striking disproportion in species richness in the Iberian Peninsula. While there are 17 Iberian endemic species in Arion, morphological criteria only recognize four species within Geomalacus. Sequence data were used to test whether these differences could result from: (1) cryptic diversity within Geomalacus; (2) an earlier origin for Arion (older clades are expected to accumulate more species); (3) distinct patterns of diversification rates (higher initial speciation rates in Arion), and (4) some combination of the above factors (e.g., an older clade with higher speciation rates). Species delimitation tests based on mitochondrial and nuclear data revealed eight cryptic lineages within Geomalacus that lessened the asymmetry; nevertheless, the disparity required further investigation. No meaningful differences in crown group ages of each recovered clade were found. Regardless the different premises of the two equally plausible diversification models (similar initial speciation rates vs. higher initial speciation rates in Geomalacus), both coincide on diversity-dependent diversification for the two groups but weaker rate declines in Arion best explains the observed asymmetry in species richness. Also, the broader environmental tolerance combined with a faster dispersal and wider distribution may have represented an evolutionary advantage for Arion. |
publishDate |
2004 |
dc.date.none.fl_str_mv |
2004-06 2004-06-01T00:00:00Z 2018-12-07T14:53:26Z |
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/10400.1/11519 |
url |
http://hdl.handle.net/10400.1/11519 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2045-2322 10.1038/s41598-017-16417-y |
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 |
Nature Publishing Group |
publisher.none.fl_str_mv |
Nature Publishing Group |
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 |
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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 |
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1799133264354476032 |