| Title: |
The Origin of Asexual Brine Shrimps |
| Authors: |
Rode, Nicolas Olivier; Jabbour-Zahab, Roula; Boyer, Loreleï; Flaven, Élodie; Hontoria, Francisco; van Stappen, Gilbert; Dufresne, France; Haag, Christoph R.; Lenormand, Thomas |
| Contributors: |
Centre d’Ecologie Fonctionnelle et Evolutive (CEFE); Université Paul-Valéry - Montpellier 3 (UPVM)-École Pratique des Hautes Études (EPHE); Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD Occitanie )-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Montpellier; Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Université de Montpellier (UM); Centre de Biologie pour la Gestion des Populations (UMR CBGP); Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD Occitanie )-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Montpellier; Consejo Superior de Investigaciones Cientificas España = Spanish National Research Council Spain (CSIC); Instituto de Acuicultura de Torre la Sal (IATS); Universiteit Gent = Ghent University = Université de Gand (UGent); Laboratory of Aquaculture and Artemia Reference Center; Université du Québec à Rimouski (UQAR); Departement de Biologie, Chimie et Géographie; We thank Christ Mahieu (Laboratory of Aquaculture & Artemia Reference Center), Paco Amat (Instituto de Acuicultura de Torre de la Sal) and Marta Sanchez (University of Sevilla) for providing samples and Emmanuel Douzery (ISEM, University of Montpellier) and Arnaud Estoup (CBGP, INRAE) for advice on phylogenetic and population genetic methods. We thank Marie-Pierre Dubois and the GEMEX molecular platform of CEFE laboratory, and theGENSEQ platform of the Centre Méditerranéen Environnement Biodiversité (LABEX CEMEB, Montpellier, France) for assistance with molecular laboratory work.; ANR-10-LABX-0004,CeMEB,Mediterranean Center for Environment and Biodiversity(2010) |
| Source: |
ISSN: 0003-0147. |
| Publisher Information: |
CCSD; University of Chicago Press |
| Publication Year: |
2022 |
| Subject Terms: |
automixis; hybridization; contagious asexuality; parthenogenesis; genetic distance; polyploidy; [SDV]Life Sciences [q-bio] |
| Description: |
The 234 sequences from dataset1 and dataset3 are deposited in GenBank (accession numbers are provided in Table S5). Microsatellite and flow cytometry data, as well as scripts used for data analysis will be archived on Dryad. ; International audience ; Determining how and how often asexual lineages emerge within sexual species is central to our understanding of sex-asex transitions and the long-term maintenance of sex. Asexuality can arise “by transmission” from an existing asexual lineage to a new one through different types of crosses. The occurrence of these crosses, cryptic sex, variations in ploidy, and recombination within asexuals greatly complicates the study of sex-asex transitions, as they preclude the use of standard phylogenetic methods and genetic distance metrics. In this study we show how to overcome these challenges by developing new approaches to investigate the origin of the various asexual lineages of the brine shrimp Artemia parthenogenetica. We use a large sample of asexuals, including all known polyploids, and their sexual relatives. We combine flow cytometry with mitochondrial and nuclear DNA data. We develop new genetic distance measures and methods to compare various scenarios describing the origin of the different lineages. We find that all diploid and polyploid A. parthenogenetica likely arose within the past 80,000 years through successive and nested hybridization events that involved backcrosses with different sexual species. All A. parthenogenetica have the same common ancestor and therefore likely carry the same asexuality gene(s) and reproduce by automixis. These findings radically change our view of sex-asex transitions in this group and show the importance of considering scenarios of asexuality by transmission. The methods developed are applicable to many other asexual taxa. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| Relation: |
info:eu-repo/semantics/altIdentifier/pmid/35905400; PUBMED: 35905400; WOS: 000863503900003 |
| DOI: |
10.1086/720268 |
| Availability: |
https://hal.science/hal-03865792; https://hal.science/hal-03865792v1/document; https://hal.science/hal-03865792v1/file/Rode_al_Am.Naturalist_2022.pdf; https://doi.org/10.1086/720268 |
| Rights: |
https://creativecommons.org/licenses/by-nc/4.0/ ; info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.CB92CDF5 |
| Database: |
BASE |