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Chronological Incongruences between Mitochondrial and Nuclear Phylogenies of Aedes Mosquitoes

One-third of all mosquitoes belong to the Aedini, a tribe comprising common vectors of viral zoonoses such as Aedes aegypti and Aedes albopictus. To improve our understanding of their evolution, we present an updated multigene estimate of Aedini phylogeny and divergence, focusing on the disentanglem...

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Autores principales: Zadra, Nicola, Rizzoli, Annapaola, Rota-Stabelli, Omar
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7996624/
https://www.ncbi.nlm.nih.gov/pubmed/33669100
http://dx.doi.org/10.3390/life11030181
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author Zadra, Nicola
Rizzoli, Annapaola
Rota-Stabelli, Omar
author_facet Zadra, Nicola
Rizzoli, Annapaola
Rota-Stabelli, Omar
author_sort Zadra, Nicola
collection PubMed
description One-third of all mosquitoes belong to the Aedini, a tribe comprising common vectors of viral zoonoses such as Aedes aegypti and Aedes albopictus. To improve our understanding of their evolution, we present an updated multigene estimate of Aedini phylogeny and divergence, focusing on the disentanglement between nuclear and mitochondrial phylogenetic signals. We first show that there are some phylogenetic discrepancies between nuclear and mitochondrial markers which may be caused by wrong taxa assignment in samples collections or by some stochastic effect due to small gene samples. We indeed show that the concatenated dataset is model and framework dependent, indicating a general paucity of signal. Our Bayesian calibrated divergence estimates point toward a mosquito radiation in the mid-Jurassic and an Aedes radiation from the mid-Cretaceous on. We observe, however a strong chronological incongruence between mitochondrial and nuclear data, the latter providing divergence times within the Aedini significantly younger than the former. We show that this incongruence is consistent over different datasets and taxon sampling and that may be explained by either peculiar evolutionary event such as different levels of saturation in certain lineages or a past history of hybridization throughout the genus. Overall, our updated picture of Aedini phylogeny, reveal a strong nuclear-mitochondrial incongruence which may be of help in setting the research agenda for future phylogenomic studies of Aedini mosquitoes.
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spelling pubmed-79966242021-03-27 Chronological Incongruences between Mitochondrial and Nuclear Phylogenies of Aedes Mosquitoes Zadra, Nicola Rizzoli, Annapaola Rota-Stabelli, Omar Life (Basel) Article One-third of all mosquitoes belong to the Aedini, a tribe comprising common vectors of viral zoonoses such as Aedes aegypti and Aedes albopictus. To improve our understanding of their evolution, we present an updated multigene estimate of Aedini phylogeny and divergence, focusing on the disentanglement between nuclear and mitochondrial phylogenetic signals. We first show that there are some phylogenetic discrepancies between nuclear and mitochondrial markers which may be caused by wrong taxa assignment in samples collections or by some stochastic effect due to small gene samples. We indeed show that the concatenated dataset is model and framework dependent, indicating a general paucity of signal. Our Bayesian calibrated divergence estimates point toward a mosquito radiation in the mid-Jurassic and an Aedes radiation from the mid-Cretaceous on. We observe, however a strong chronological incongruence between mitochondrial and nuclear data, the latter providing divergence times within the Aedini significantly younger than the former. We show that this incongruence is consistent over different datasets and taxon sampling and that may be explained by either peculiar evolutionary event such as different levels of saturation in certain lineages or a past history of hybridization throughout the genus. Overall, our updated picture of Aedini phylogeny, reveal a strong nuclear-mitochondrial incongruence which may be of help in setting the research agenda for future phylogenomic studies of Aedini mosquitoes. MDPI 2021-02-25 /pmc/articles/PMC7996624/ /pubmed/33669100 http://dx.doi.org/10.3390/life11030181 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) ).
spellingShingle Article
Zadra, Nicola
Rizzoli, Annapaola
Rota-Stabelli, Omar
Chronological Incongruences between Mitochondrial and Nuclear Phylogenies of Aedes Mosquitoes
title Chronological Incongruences between Mitochondrial and Nuclear Phylogenies of Aedes Mosquitoes
title_full Chronological Incongruences between Mitochondrial and Nuclear Phylogenies of Aedes Mosquitoes
title_fullStr Chronological Incongruences between Mitochondrial and Nuclear Phylogenies of Aedes Mosquitoes
title_full_unstemmed Chronological Incongruences between Mitochondrial and Nuclear Phylogenies of Aedes Mosquitoes
title_short Chronological Incongruences between Mitochondrial and Nuclear Phylogenies of Aedes Mosquitoes
title_sort chronological incongruences between mitochondrial and nuclear phylogenies of aedes mosquitoes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7996624/
https://www.ncbi.nlm.nih.gov/pubmed/33669100
http://dx.doi.org/10.3390/life11030181
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