1
|
Foley NM, Harris AJ, Bredemeyer KR, Ruedi M, Puechmaille SJ, Teeling EC, Criscitiello MF, Murphy WJ. Karyotypic stasis and swarming influenced the evolution of viral tolerance in a species-rich bat radiation. CELL GENOMICS 2024; 4:100482. [PMID: 38237599 PMCID: PMC10879000 DOI: 10.1016/j.xgen.2023.100482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 09/17/2023] [Accepted: 12/10/2023] [Indexed: 02/17/2024]
Abstract
The emergence of COVID-19 and severe acute respiratory syndrome (SARS) has prioritized understanding bats' viral tolerance. Myotis bats are exceptionally species rich and have evolved viral tolerance. They also exhibit swarming, a cryptic behavior where large, multi-species assemblages gather for mating, which has been hypothesized to promote interspecific hybridization. To resolve the coevolution of genome architecture and their unusual antiviral tolerance, we undertook a phylogenomic analysis of 60 Old World Myotis genomes. We demonstrate an extensive history of introgressive hybridization that has replaced the species phylogeny across 17%-93% of the genome except for pericentromeric regions of macrochromosomes. Introgression tracts were enriched on microchromosome regions containing key antiviral pathway genes overexpressed during viral challenge experiments. Together, these results suggest that the unusual Myotis karyotype may have evolved to selectively position immune-related genes in high recombining genomic regions prone to introgression of divergent alleles, including a diversity of interleukin loci responsible for the release of pro-inflammatory cytokines.
Collapse
Affiliation(s)
- Nicole M Foley
- Veterinary Integrative Biosciences, Texas A&M University, College Station, TX, USA.
| | - Andrew J Harris
- Veterinary Integrative Biosciences, Texas A&M University, College Station, TX, USA; Interdisciplinary Program in Genetics & Genomics, Texas A&M University, College Station, TX, USA
| | - Kevin R Bredemeyer
- Veterinary Integrative Biosciences, Texas A&M University, College Station, TX, USA; Interdisciplinary Program in Genetics & Genomics, Texas A&M University, College Station, TX, USA
| | - Manuel Ruedi
- Department of Mammalogy and Ornithology, Natural History Museum of Geneva, Route de Malagnou 1, BP 6434, 1211 Geneva 6, Switzerland
| | - Sebastien J Puechmaille
- Institut des Sciences de l'Évolution, Montpellier (ISEM), Université de Montpellier, CNRS, EPHE, IRD, Montpellier, France; Institut Universitaire de France, Paris, France
| | - Emma C Teeling
- School of Biology and Environmental, Science, Science Centre West, University College Dublin, Belfield, Ireland
| | - Michael F Criscitiello
- Interdisciplinary Program in Genetics & Genomics, Texas A&M University, College Station, TX, USA; Department of Veterinary Pathobiology, Texas A&M University, College Station, TX 77843, USA
| | - William J Murphy
- Veterinary Integrative Biosciences, Texas A&M University, College Station, TX, USA; Interdisciplinary Program in Genetics & Genomics, Texas A&M University, College Station, TX, USA.
| |
Collapse
|
2
|
Mochales-Riaño G, Burriel-Carranza B, Barros MI, Velo-Antón G, Talavera A, Spilani L, Tejero-Cicuéndez H, Crochet PA, Piris A, García-Cardenete L, Busais S, Els J, Shobrak M, Brito JC, Šmíd J, Carranza S, Martínez-Freiría F. Hidden in the sand: Phylogenomics unravel an unexpected evolutionary history for the desert-adapted vipers of the genus Cerastes. Mol Phylogenet Evol 2024; 191:107979. [PMID: 38040070 DOI: 10.1016/j.ympev.2023.107979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 11/24/2023] [Accepted: 11/26/2023] [Indexed: 12/03/2023]
Abstract
The desert vipers of the genus Cerastes are a small clade of medically important venomous snakes within the family Viperidae. According to published morphological and molecular studies, the group is comprised by four species: two morphologically similar and phylogenetically sister taxa, the African horned viper (Cerastes cerastes) and the Arabian horned viper (Cerastes gasperettii); a more distantly related species, the Saharan sand viper (Cerastes vipera), and the enigmatic Böhme's sand viper (Cerastes boehmei), only known from a single specimen in captivity allegedly captured in Central Tunisia. In this study, we sequenced one mitochondrial marker (COI) as well as genome-wide data (ddRAD sequencing) from 28 and 41 samples, respectively, covering the entire distribution range of the genus to explore the population genomics, phylogenomic relationships and introgression patterns within the genus Cerastes. Additionally, and to provide insights into the mode of diversification of the group, we carried out niche overlap analyses considering climatic and habitat variables. Both nuclear phylogenomic reconstructions and population structure analyses have unveiled an unexpected evolutionary history for the genus Cerastes, which sharply contradicts the morphological similarities and previously published mitochondrial approaches. Cerastes cerastes and C. vipera are recovered as sister taxa whilst C. gasperettii is a sister taxon to the clade formed by these two species. We found a relatively high niche overlap (OI > 0.7) in both climatic and habitat variables between C. cerastes and C. vipera, contradicting a potential scenario of sympatric speciation. These results are in line with the introgression found between the northwestern African populations of C. cerastes and C. vipera. Finally, our genomic data confirms the existence of a lineage of C. cerastes in Arabia. All these results highlight the importance of genome-wide data over few genetic markers to study the evolutionary history of species.
Collapse
Affiliation(s)
| | - Bernat Burriel-Carranza
- Institute of Evolutionary Biology (CSIC-Universitat Pompeu Fabra), Barcelona, Spain; Museu de Ciències Naturals de Barcelona, P° Picasso s/n, Parc Ciutadella, 08003 Barcelona, Spain
| | - Margarida Isabel Barros
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, Universidade do Porto, 4485-661 Vairão, Portugal
| | - Guillermo Velo-Antón
- Universidad de Vigo, Facultad de Biología, Edificio de Ciencias Experimentales, Bloque B, Planta 2, Laboratorio 39 (Grupo GEA), E-36310 Vigo, Spain
| | - Adrián Talavera
- Institute of Evolutionary Biology (CSIC-Universitat Pompeu Fabra), Barcelona, Spain
| | - Loukia Spilani
- Institute of Evolutionary Biology (CSIC-Universitat Pompeu Fabra), Barcelona, Spain
| | - Héctor Tejero-Cicuéndez
- Institute of Evolutionary Biology (CSIC-Universitat Pompeu Fabra), Barcelona, Spain; Department of Biodiversity, Ecology and Evolution, Faculty of Biology, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | | | - Alberto Piris
- Institute of Evolutionary Biology (CSIC-Universitat Pompeu Fabra), Barcelona, Spain
| | - Luis García-Cardenete
- Agencia de Medio Ambiente y Agua de Andalucía, C/Johan G. Gutenberg, 1, 41092 Seville, Spain
| | - Salem Busais
- Department of Biology, Faculty of Education, Aden University, Yemen
| | - Johannes Els
- Breeding Centre for Endangered Arabian Wildlife, Environment and Protected Areas Authority, Sharjah, United Arab Emirates
| | - Mohammed Shobrak
- National Center for Wildlife, Prince Saud Al Faisal Wildlife Research Centre, Taif, Saudi Arabia
| | - José Carlos Brito
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, Universidade do Porto, 4485-661 Vairão, Portugal; BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661 Vairão, Portugal
| | - Jiří Šmíd
- Department of Zoology, Faculty of Science, Charles University, Vinicná 7, Prague, Czech Republic
| | - Salvador Carranza
- Institute of Evolutionary Biology (CSIC-Universitat Pompeu Fabra), Barcelona, Spain
| | - Fernando Martínez-Freiría
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, Universidade do Porto, 4485-661 Vairão, Portugal; BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661 Vairão, Portugal.
| |
Collapse
|
3
|
Dong X, Zhang H, Zhu X, Wang K, Xue H, Ye Z, Zheng C, Bu W. Mitochondrial introgression and mito-nuclear discordance obscured the closely related species boundaries in Cletus Stål from China (Heteroptera: Coreidae). Mol Phylogenet Evol 2023; 184:107802. [PMID: 37221926 DOI: 10.1016/j.ympev.2023.107802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 04/07/2023] [Accepted: 04/18/2023] [Indexed: 05/25/2023]
Abstract
Accurate taxonomy and delimitation are of great importance for pest control strategies and management programs. Here, we focus on Cletus (Insecta: Hemiptera: Coreidae), which includes many crop pests. The species boundaries still conflict and only cytochrome c oxidase subunit I (COI) barcoding has been previously used for molecular studies. We generated new mitochondrial genome and nuclear genome-wide SNPs to explore the species boundaries of 46 Cletus samples from China using multiple species delimitation approaches. All results recovered a monophyly with high support, except for two closely related species in clade I - C. punctiger and C. graminis. Mitochondrial data demonstrated admixture in clade I, while genome-wide SNPs unambiguously identified two separate species, which were confirmed by morphological classification. Inconsistent nuclear and mitochondrial data indicated mito-nuclear discordance. Mitochondrial introgression is the most likely explanation, and more extensive sampling and more comprehensive data are needed to ascertain a pattern. Accurate species delimitation will shed light on species status; thus, an accurate taxonomy is of particular concern, as there is a pressing need to implement precise control of agricultural pests and to perform further research on diversification.
Collapse
Affiliation(s)
- Xue Dong
- Institute of Entomology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Haiguang Zhang
- College of Life Science, Linyi University, Linyi 276000, China
| | - Xiuxiu Zhu
- Institute of Entomology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Kaibin Wang
- Institute of Entomology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Huaijun Xue
- Institute of Entomology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Zhen Ye
- Institute of Entomology, College of Life Sciences, Nankai University, Tianjin 300071, China.
| | - Chenguang Zheng
- Institute of Entomology, College of Life Sciences, Nankai University, Tianjin 300071, China.
| | - Wenjun Bu
- Institute of Entomology, College of Life Sciences, Nankai University, Tianjin 300071, China.
| |
Collapse
|
4
|
Zhou W, Furey NM, Soisook P, Thong VD, Lim BK, Rossiter SJ, Mao X. Diversification and introgression in four chromosomal taxa of the Pearson's horseshoe bat (Rhinolophus pearsoni) group. Mol Phylogenet Evol 2023; 183:107784. [PMID: 37040825 DOI: 10.1016/j.ympev.2023.107784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 03/11/2023] [Accepted: 04/07/2023] [Indexed: 04/13/2023]
Abstract
Chromosomal variation among closely related taxa is common in both plants and animals, and can reduce rates of introgression as well as promote reproductive isolation and speciation. In mammals, studies relating introgression to chromosomal variation have tended to focus on a few model systems and typically characterized levels of introgression using small numbers of loci. Here we took a genome-wide approach to examine how introgression rates vary among four closely related horseshoe bats (Rhinolophus pearsoni group) that possess different diploid chromosome numbers (2n = 42, 44, 46, and 60) resulting from Robertsonian (Rb) changes (fissions/fusions). Using a sequence capture we obtained orthologous loci for thousands of nuclear loci, as well as mitogenomes, and performed phylogenetic and population genetic analyses. We found that the taxon with 2n = 60 was the first to diverge in this group, and that the relationships among the three other taxa (2n = 42, 44 and 46) showed discordance across our different analyses. Our results revealed signatures of multiple ancient introgression events between the four taxa, with evidence of mitonuclar discordance in phylogenetic trees and reticulation events in their evolutionary history. Despite this, we found no evidence of recent and/or ongoing introgression between taxa. Overall, our results indicate that the effects of Rb changes on the reduction of introgression are complicated and that these may contribute to reproductive isolation and speciation in concert with other factors (e.g. phenotypic and genic divergence).
Collapse
Affiliation(s)
- Weiwei Zhou
- School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200062, China
| | - Neil M Furey
- Fauna & Flora International (Cambodia), PO Box 1380, No. 19, Street 360, Boeng Keng Kong 1, Phnom Penh 12000, Cambodia
| | - Pipat Soisook
- Princess Maha Chakri Sirindhorn Natural History Museum, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
| | - Vu D Thong
- Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet Road, Cau Giay District, Hanoi, Viet Nam; Graduate University of Science and Technology, VAST, Viet Nam
| | - Burton K Lim
- Department of Natural History, Royal Ontario Museum, Toronto, Ontario M5S 2C6, Canada
| | - Stephen J Rossiter
- School of Biological and Behavioural Sciences, Queen Mary University of London, London E1 4NS, UK.
| | - Xiuguang Mao
- School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200062, China.
| |
Collapse
|
5
|
Retracing Phylogenetic, Host and Geographic Origins of Coronaviruses with Coloured Genomic Bootstrap Barcodes: SARS-CoV and SARS-CoV-2 as Case Studies. Viruses 2023; 15:v15020406. [PMID: 36851620 PMCID: PMC9961909 DOI: 10.3390/v15020406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/24/2023] [Accepted: 01/29/2023] [Indexed: 02/04/2023] Open
Abstract
Phylogenetic trees of coronaviruses are difficult to interpret because they undergo frequent genomic recombination. Here, we propose a new method, coloured genomic bootstrap (CGB) barcodes, to highlight the polyphyletic origins of human sarbecoviruses and understand their host and geographic origins. The results indicate that SARS-CoV and SARS-CoV-2 contain genomic regions of mixed ancestry originating from horseshoe bat (Rhinolophus) viruses. First, different regions of SARS-CoV share exclusive ancestry with five Rhinolophus viruses from Southwest China (RfYNLF/31C: 17.9%; RpF46: 3.3%; RspSC2018: 2.0%; Rpe3: 1.3%; RaLYRa11: 1.0%) and 97% of its genome can be related to bat viruses from Yunnan (China), supporting its emergence in the Rhinolophus species of this province. Second, different regions of SARS-CoV-2 share exclusive ancestry with eight Rhinolophus viruses from Yunnan (RpYN06: 5.8%; RaTG13: 4.8%; RmYN02: 3.8%), Laos (RpBANAL103: 3.3%; RmarBANAL236: 1.7%; RmBANAL52: 1.0%; RmBANAL247: 0.7%), and Cambodia (RshSTT200: 2.3%), and 98% of its genome can be related to bat viruses from northern Laos and Yunnan, supporting its emergence in the Rhinolophus species of this region. Although CGB barcodes are very useful in retracing the origins of human sarbecoviruses, further investigations are needed to better take into account the diversity of coronaviruses in bats from Cambodia, Laos, Myanmar, Thailand and Vietnam.
Collapse
|
6
|
H Tomasco I, Giorello FM, Boullosa N, Feijoo M, Lanzone C, Lessa EP. The contribution of incomplete lineage sorting and introgression to the evolutionary history of the fast-evolving genus Ctenomys (Rodentia, Ctenomyidae). Mol Phylogenet Evol 2022; 176:107593. [PMID: 35905819 DOI: 10.1016/j.ympev.2022.107593] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 06/28/2022] [Accepted: 07/21/2022] [Indexed: 10/31/2022]
Abstract
Incomplete lineage sorting and introgression have been increasingly recognized as important processes involved in biological differentiation. Both incomplete lineage sorting and introgression result in incongruences between gene trees and species trees, consequently causing difficulties in phylogenetic reconstruction. This is particularly the case for rapid radiations, as short internodal distances and incomplete reproductive isolation increase the likelihood of both ILS and introgression. Estimation of the relative frequency of these processes requires assessments across many genomic regions. We use transcriptomics to test for introgression and estimate the frequency of incomplete lineage sorting in a set of three closely related and geographically adjacent South American tuco-tucos species (Ctenomys), a genus comprising 64 species resulting from recent, rapid radiation. After cleaning and filtering, 5764 orthologous genes strongly support paraphyly of C. pearsoni relative to C. brasiliensis (putatively represented by the population of Villa Serrana). In line with earlier phylogenetic work, the C. pearsoni - C. brasiliensis pair is closely related to C. torquatus, whereas C. rionegrensis is more distantly related to these three nominal species. Classical Patterson's D-statistic shows significant signals of introgression from C. torquatus into C. brasiliensis. However, a 5-taxon test shows no significant results. Incomplete lineage sorting was estimated to have involved about 9% of the loci, suggesting it represents an important process in the incipient diversification of tuco-tucos.
Collapse
Affiliation(s)
- Ivanna H Tomasco
- Departamento de Ecología y Evolución, Facultad de Ciencias, Universidad de la República. Iguá 4225. Montevideo, 11400. Uruguay.
| | - Facundo M Giorello
- Facundo M. Giorello. PDU Espacio de Biología Vegetal del Noreste, Centro Universitario de Tacuarembó (CUT), Universidad de la República, Ruta 5 km 386,200, 45000, Tacuarembó, Uruguay
| | - Nicolás Boullosa
- Departamento de Ecología y Evolución, Facultad de Ciencias, Universidad de la República. Iguá 4225. Montevideo, 11400. Uruguay
| | - Matías Feijoo
- Matías Feijoo. Departamento de Sistemas Agrarios y Paisajes Culturales, Centro Universitario Regional Este (CURE). Universidad de la República. Ruta 8 Km 281, Treinta y Tres, Uruguay
| | - Cecilia Lanzone
- Cecilia Lanzone. Laboratorio de Genética Evolutiva, IBS (CONICET-UNaM), FCEQyN, Félix de Azara 1553, Posadas,3300. Misiones, Argentina
| | - Enrique P Lessa
- Departamento de Ecología y Evolución, Facultad de Ciencias, Universidad de la República. Iguá 4225. Montevideo, 11400. Uruguay
| |
Collapse
|
7
|
Chornelia A, Lu J, Hughes AC. How to Accurately Delineate Morphologically Conserved Taxa and Diagnose Their Phenotypic Disparities: Species Delimitation in Cryptic Rhinolophidae (Chiroptera). Front Ecol Evol 2022. [DOI: 10.3389/fevo.2022.854509] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Systematics and taxonomy are the backbone of all components of biology and ecology, yet cryptic species present a major challenge for accurate species identification. This is especially problematic as they represent a substantial portion of undiscovered biodiversity, and have implications for not only species conservation, but even assaying potential risk of zoonotic spillover. Here, we use integrative approaches to delineate potential cryptic species in horseshoe bats (Rhinolophidae), evaluate the phenotypic disparities between cryptic species, and identify key traits for their identification. We tested the use of multispecies coalescent models (MSC) using Bayesian Phylogenetic and Phylogeography (BPP) and found that BPP was useful in delineating potential cryptic species, and consistent with acoustic traits. Our results show that around 40% of Asian rhinolophid species are potentially cryptic and have not been formally described. In order to avoid potential misidentification and allow species to be accurately identified, we identified quantitative noseleaf sella and acoustic characters as the most informative traits in delineating between potential cryptic species in Rhinolophidae. This highlights the physical differences between cryptic species that are apparent in noseleaf traits which often only qualitatively described but rarely measured. Each part of the noseleaf including the sella, lateral lappets, and lancet furrows, play roles in focusing acoustic beams and thus, provide useful characteristics to identify cryptic Rhinolophus species. Finally, species delimitation for cryptic species cannot rely on genetic data alone, but such data should be complemented by other evidence, including phenotypic, acoustic data, and geographic distributions to ensure accurate species identification and delineation.
Collapse
|
8
|
Dong X, Yi W, Zheng C, Zhu X, Wang S, Xue H, Ye Z, Bu W. Species delimitation of rice seed bugs complex: Insights from mitochondrial genomes and ddRAD‐seq data. ZOOL SCR 2021. [DOI: 10.1111/zsc.12523] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Xue Dong
- Institute of Entomology College of Life Sciences Nankai University Tianjin China
| | - Wenbo Yi
- Department of Biology Xinzhou Teachers University Xinzhou China
| | - Chenguang Zheng
- Institute of Entomology College of Life Sciences Nankai University Tianjin China
| | - Xiuxiu Zhu
- Institute of Entomology College of Life Sciences Nankai University Tianjin China
| | - Shujing Wang
- Institute of Entomology College of Life Sciences Nankai University Tianjin China
| | - Huaijun Xue
- Institute of Entomology College of Life Sciences Nankai University Tianjin China
| | - Zhen Ye
- Institute of Entomology College of Life Sciences Nankai University Tianjin China
| | - Wenjun Bu
- Institute of Entomology College of Life Sciences Nankai University Tianjin China
| |
Collapse
|
9
|
Chiropteran (Chiroptera; Mammalia) taxonomy in light of modern methods and approaches. RUSSIAN JOURNAL OF THERIOLOGY 2021. [DOI: 10.15298/rusjtheriol.20.2.01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
10
|
Xu SL, Han BP, Martínez A, Schwentner M, Fontaneto D, Dumont HJ, Kotov AA. Mitogenomics of Cladocera (Branchiopoda): Marked gene order rearrangements and independent predation roots. Mol Phylogenet Evol 2021; 164:107275. [PMID: 34339827 DOI: 10.1016/j.ympev.2021.107275] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 07/14/2021] [Accepted: 07/28/2021] [Indexed: 11/18/2022]
Abstract
Cladocera (Crustacea: Branchiopoda) is a key group of invertebrates. Despite a long history of phylogenetic research, relationships within this group remain disputed. We here provide new insights based on 15 new mitochondrial genomes obtained from high-throughput sequencing (HTS) and 40 mitogenomes extracted from published HTS datasets. Together with 25 mitogenomes from GenBank, we generated a matrix of 80 mitogenomes, 44 of them belonging to Cladocera. We also obtained a matrix with 168 nuclear orthologous genes to further assess the phylogenetic result from mitogenomes based on published data and one new HTS data ofLeptodora. Maximum likelihood and Bayesian phylogenetic analyses recovered all Branchiopoda orders as monophyletic and supported a sister-group relationship between Anomopoda and Onychopoda, making the taxon Gymnomera paraphyletic and supporting an independent origin of predatory Haplopoda and Onychopoda. The nuclear phylogeny and topological tests also support Gymnomera as paraphyletic, and the nuclear phylogeny strongly supports a sister-group relationship between Ctenopoda and Haplopoda. We provide a fossil-calibrated time tree, congruent with a Carboniferous origin for Cladocera and a subsequent diversification of the crown group of Anomopoda, Onychopoda, and Ctenopoda, at least in the Triassic. Despite their long evolutionary history, non-Cladoceran Branchiopoda exhibited high mitogenome structural stability. On the other hand, 21 out of 24 gene rearrangements occurred within the relatively younger Cladocera. We found the differential base compositional skewness patterns between Daphnia s.s. and Ctenodaphnia, which might be related to the divergence between these taxa. We also provide evidence to support the recent finding that Spinicaudata possesses mitogenomes with inversed compositional skewness without gene rearrangement. Such a pattern has only been reported in Spinicaudata.
Collapse
Affiliation(s)
- Shao-Lin Xu
- Jinan University, Department of Ecology, Guangzhou 510632, China
| | - Bo-Ping Han
- Jinan University, Department of Ecology, Guangzhou 510632, China.
| | - Alejandro Martínez
- National Research Council of Italy (CNR), Water Research Institute (IRSA), Molecular Ecology Group (MEG), Largo Tonolli 50, I-28922 Verbania Pallanza, Italy
| | | | - Diego Fontaneto
- National Research Council of Italy (CNR), Water Research Institute (IRSA), Molecular Ecology Group (MEG), Largo Tonolli 50, I-28922 Verbania Pallanza, Italy
| | - Henri J Dumont
- Jinan University, Department of Ecology, Guangzhou 510632, China; Ghent University, Department of Biology, Ledeganckstraat 35, B-9000 Ghent, Belgium
| | - Alexey A Kotov
- Laboratory of Aquatic Ecology and Invasions, A.N. Severtsov Institute of Ecology and Evolution of Russian Academy of Sciences, Moscow, Russia
| |
Collapse
|
11
|
The first studies of small mammals of the Cham Chu and Bac Me Nature Reserves, north-eastern Vietnam. RUSSIAN JOURNAL OF THERIOLOGY 2020. [DOI: 10.15298/rusjtheriol.19.2.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
12
|
Sun H, Chen W, Wang J, Zhang L, Rossiter SJ, Mao X. Echolocation call frequency variation in horseshoe bats: molecular basis revealed by comparative transcriptomics. Proc Biol Sci 2020; 287:20200875. [PMID: 32900318 DOI: 10.1098/rspb.2020.0875] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Recently diverged taxa with contrasting phenotypes offer opportunities for unravelling the genetic basis of phenotypic variation in nature. Horseshoe bats are a speciose group that exhibit a derived form of high-duty cycle echolocation in which the inner ear is finely tuned to echoes of the narrowband call frequency. Here, by focusing on three recently diverged subspecies of the intermediate horseshoe bat (Rhinolophus affinis) that display divergent echolocation call frequencies, we aim to identify candidate loci putatively involved in hearing frequency variation. We used de novo transcriptome sequencing of two mainland taxa (himalayanus and macrurus) and one island taxon (hainanus) to compare expression profiles of thousands of genes. By comparing taxa with divergent call frequencies (around 15 kHz difference), we identified 252 differentially expressed genes, of which six have been shown to be involved in hearing or deafness in human/mouse. To obtain further validation of these results, we applied quantitative reverse transcription-PCR to the candidate gene FBXL15 and found a broad association between the level of expression and call frequency across taxa. The genes identified here represent strong candidate loci associated with hearing frequency variation in bats.
Collapse
Affiliation(s)
- Haijian Sun
- School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200062, People's Republic of China
| | - Wenli Chen
- School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200062, People's Republic of China
| | - Jiaying Wang
- Institute of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, People's Republic of China
| | - Libiao Zhang
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Guangdong Institute of Applied Biological Resources, Guangzhou 510260, People's Republic of China
| | - Stephen J Rossiter
- School of Biological and Chemical Sciences, Queen Mary University of London, London E1 4NS, UK
| | - Xiuguang Mao
- School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200062, People's Republic of China.,Institute of Eco-Chongming (IEC), East China Normal University, Shanghai 200062, People's Republic of China
| |
Collapse
|
13
|
Mao X, Rossiter SJ. Genome-wide data reveal discordant mitonuclear introgression in the intermediate horseshoe bat (Rhinolophus affinis). Mol Phylogenet Evol 2020; 150:106886. [PMID: 32534185 DOI: 10.1016/j.ympev.2020.106886] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 06/01/2020] [Accepted: 06/03/2020] [Indexed: 10/24/2022]
Abstract
Closely related taxa often exhibit mitonuclear discordance attributed to introgression of mitochondrial DNA (mtDNA), yet few studies have considered the underlying causes of mtDNA introgression. Here we test for demographic versus adaptive processes as explanations for mtDNA introgression in three subspecies of the intermediate horseshoe bat (Rhinolophus affinis). We generated sequences of 1692 nuclear genes and 13 mitochondrial protein-coding genes for 48 individuals. Phylogenetic reconstructions based on 320 exon sequences and 2217 single nucleotide polymorphisms (SNPs) both revealed conflicts between the species tree and mtDNA tree. These results, together with geographic patterns of mitonuclear discordance, and shared identical or near-identical mtDNA sequences, suggest extensive introgression of mtDNA between the two parapatric mainland subspecies. Under demographic hypotheses, we would also expect to uncover traces of ncDNA introgression, however, population structure and gene flow analyses revealed little nuclear admixture. Furthermore, we found inconsistent estimates of the timing of population expansion and that of the most recent common ancestor for the clade containing introgressed haplotypes. Without a clear demographic explanation, we also examined whether introgression likely arises from adaptation. We found that five mtDNA genes contained fixed amino acid differences between introgressed and non-introgressed individuals, including putative positive selection found in one codon, although this did not show introgression. While our evidence for rejecting demographic hypotheses is arguably stronger than that for rejecting adaptation, we find no definitive support for either explanation. Future efforts will focus on larger-scale resequencing to decipher the underlying causes of discordant mitonuclear introgression in this system.
Collapse
Affiliation(s)
- Xiuguang Mao
- School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200062, China; Institute of Eco-Chongming (IEC), East China Normal University, Shanghai 200062, China.
| | - Stephen J Rossiter
- School of Biological and Chemical Sciences, Queen Mary University of London, London E1 4NS, UK.
| |
Collapse
|