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Qi Z, Shi J, Yu Y, Yin G, Zhou X, Yu Y. Paternal Mitochondrial DNA Leakage in Natural Populations of Large-Scale Loach, Paramisgurnus dabryanus. BIOLOGY 2024; 13:604. [PMID: 39194542 DOI: 10.3390/biology13080604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2024] [Revised: 08/02/2024] [Accepted: 08/08/2024] [Indexed: 08/29/2024]
Abstract
Animal mitochondrial DNA is usually considered to comply with strict maternal inheritance, and only one mitochondrial DNA haplotype exists in an individual. However, mitochondrial heteroplasmy, the occurrence of more than one mitochondrial haplotype, has recently been reported in some animals, such as mice, mussels, and birds. This study conducted extensive field surveys to obtain representative samples to investigate the existence of paternal inheritance of mitochondrial DNA (mtDNA) in natural fish populations. Evidence of paternal mitochondrial DNA leakage of P. dabryanus was discovered using high-throughput sequencing and bioinformatics methods. Two distinct mitochondrial haplotypes (16,569 bp for haplotype I and 16,646 bp for haplotype II) were observed, differing by 18.83% in nucleotide sequence. Phylogenetic analysis suggests divergence between these haplotypes and potential interspecific hybridization with M. anguillicaudatus, leading to paternal leakage. In natural populations of P. dabryanus along the Yangtze River, both haplotypes are present, with Type I being dominant (75% copy number). Expression analysis shows that Type I has higher expression levels of ND3 and ND6 genes compared to Type II, suggesting Type I's primary role. This discovery of a species with two mitochondrial types provides a model for studying paternal leakage heterogeneity and insights into mitochondrial genome evolution and inheritance.
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Affiliation(s)
- Zixin Qi
- College of Animal Science and Technology, Henan University of Animal Husbandry and Economy, Zhengzhou 450046, China
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
| | - Jiaoxu Shi
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
- Agronomy and Life Science Department, Zhaotong University, Zhaotong 657000, China
| | - Yue Yu
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
| | - Guangmei Yin
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
| | - Xiaoyun Zhou
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
| | - Yongyao Yu
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
- Hubei Hongshan Laboratory, Wuhan 430070, China
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2
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Rampacci E, Diaferia M, Lucentini L, Brustenga L, Capasso M, Girardi S, Gizzi I, Primavilla S, Veronesi F, Passamonti F. Detection of zoonotic enteropathogens in captive large felids in Italy. Zoonoses Public Health 2024; 71:200-209. [PMID: 38017609 DOI: 10.1111/zph.13099] [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: 08/29/2022] [Revised: 06/07/2023] [Accepted: 11/06/2023] [Indexed: 11/30/2023]
Abstract
AIMS Within the One Health paradigm, infectious disease surveillance have been developed for domestic and wild animals, leaving the role of captive non-domestic populations, especially felids in zoos and circuses, less explored. This study addresses the proximity of these captive animals to urban areas, necessitating focused monitoring for potential zoonotic enteropathogens. The present work aimed to investigate the presence of such zoonotic enteropathogens in faecal samples from captive large felid populations. METHODS AND RESULTS A total of 108 faecal samples were collected in three circuses, five zoos and one rescue centre across Italy. Salmonella spp. isolation, serotyping and antimicrobial susceptibility testing were conducted on all samples. Additionally, 60 samples were also examined for gastrointestinal parasites using standard coprological techniques. Giardia spp. detection employed direct immunofluorescent staining and specific PCR, while Toxoplasma gondii was detected using PCR targeting B1 gene. A total of 51 Salmonella enterica subsp. enterica were isolated, with predominant serovariants including Infantis (43.1%), Coeln (11.8%) and Newport (11.8%). The captive felids likely act as asymptomatic carriers of foodborne Salmonella, with notable resistance ampicillin and trimethoprim-sulfamethoxazole, no resistance to enrofloxacin was noted. Microscopic analysis revealed Toxascaris leonina eggs in 11 faecal samples (18.3%) and Giardia duodenalis cysts in one animal (1.7%). CONCLUSIONS Captive animals in public settings may act as sources of Salmonella infection and enteroparasitosis for both occupational and general exposure. The study emphasizes the role of captive animals in antimicrobial resistance dynamics, highlighting the need for routine pathogen screening in the management practices of zoological structures.
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Affiliation(s)
- Elisa Rampacci
- Department of Veterinary Medicine, University of Perugia, Perugia, Italy
| | - Manuela Diaferia
- Department of Veterinary Medicine, University of Perugia, Perugia, Italy
| | - Livia Lucentini
- Department of Chemistry, Biology and Biotechnologies, University of Perugia, Perugia, Italy
| | - Leonardo Brustenga
- Department of Veterinary Medicine, University of Perugia, Perugia, Italy
| | - Michele Capasso
- Department of Veterinary Medicine & Animal Production, University of Naples 'Federico II', Naples, Italy
| | - Stefano Girardi
- Department of Veterinary Medicine, University of Perugia, Perugia, Italy
| | - Ilaria Gizzi
- Department of Veterinary Medicine, University of Perugia, Perugia, Italy
| | - Sara Primavilla
- Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche 'Togo Rosati', Perugia, Italy
| | - Fabrizia Veronesi
- Department of Veterinary Medicine, University of Perugia, Perugia, Italy
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3
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Payne N, Erwin JA, Morrison JL, Dwyer JF, Culver M. Genomic insights into isolation of the threatened Florida crested caracara (Caracara plancus). J Hered 2024; 115:45-56. [PMID: 37837958 DOI: 10.1093/jhered/esad057] [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: 06/07/2023] [Revised: 09/18/2023] [Accepted: 09/24/2023] [Indexed: 10/16/2023] Open
Abstract
We conducted a population genomic study of the crested caracara (Caracara plancus) using samples (n = 290) collected from individuals in Florida, Texas, and Arizona, United States. Crested caracaras are non-migratory raptors ranging from the southern tip of South America to the southern United States, including a federally protected relict population in Florida long thought to have been isolated since the last ice age. Our objectives were to evaluate genetic diversity and population structure of Florida's apparently isolated population and to evaluate taxonomic relationships of crested caracaras at the northern edge of their range. Using DNA purified from blood samples, we conducted double-digest restriction site associated DNA sequencing and sequenced the mitochondrial ND2 gene. Analyses of population structure using over 9,000 SNPs suggest that two major clusters are best supported, one cluster including only Florida individuals and the other cluster including Arizona and Texas individuals. Both SNPs and mitochondrial haplotypes reveal the Florida population to be highly differentiated genetically from Arizona and Texas populations, whereas, Arizona and Texas populations are moderately differentiated from each other. The Florida population's mitochondrial haplotypes form a separate monophyletic group, while Arizona and Texas populations share mitochondrial haplotypes. Results of this study provide substantial genetic evidence that Florida's crested caracaras have experienced long-term isolation from caracaras in Arizona and Texas and thus, represent a distinct evolutionary lineage possibly warranting distinction as an Evolutionarily Significant Unit (ESU) or subspecies. This study will inform conservation strategies focused on long-term survival of Florida's distinct, panmictic population.
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Affiliation(s)
- Natalie Payne
- Genetics Graduate Interdisciplinary Program, University of Arizona, Tucson, AZ 85719, United States
| | - John A Erwin
- Florida International University College of Law, Miami, FL 33199, United States
| | - Joan L Morrison
- Department of Biology, Trinity College, 300 Summit Street, Hartford, CT 06106, United States
| | - James F Dwyer
- EDM International, Inc., Fort Collins, CO 80525, United States
| | - Melanie Culver
- Genetics Graduate Interdisciplinary Program, University of Arizona, Tucson, AZ 85719, United States
- U.S. Geological Survey, Arizona Cooperative Fish and Wildlife Research Unit, University of Arizona, Tucson, AZ 85721, United States
- School of Natural Resources and the Environment, University of Arizona, Tucson, AZ 85721, United States
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An Updated List of Rock Partridge (Alectoris graeca) Haplotypes from the Apennines—Central Italy. DATA 2022. [DOI: 10.3390/data7090124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
We report an updated and expanded list of Rock Partridge (Alectoris graeca) haplotypes found in wild animals throughout the Apennines of central Italy. Samples were collected and identified during a monitoring program of autochthonous Galliformes and from a private collection. The haplotypes were identified on a longer fragment of the mitochondrial control region (D-loop) based on previously reported haplotypes. This novel evidence, based on a wider sampling area and a higher number of analyzed specimens, will be of relevance in both conservation projects and gamebird breeding for restock, as imposed by the Italian Action Plan. Studying longer fragments can also be useful for phylogeographic analysis.
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Ye Z, Zhao C, Raborn RT, Lin M, Wei W, Hao Y, Lynch M. Genetic Diversity, Heteroplasmy, and Recombination in Mitochondrial Genomes of Daphnia pulex, Daphnia pulicaria, and Daphnia obtusa. Mol Biol Evol 2022; 39:msac059. [PMID: 35325186 PMCID: PMC9004417 DOI: 10.1093/molbev/msac059] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Genetic variants of mitochondrial DNA at the individual (heteroplasmy) and population (polymorphism) levels provide insight into their roles in multiple cellular and evolutionary processes. However, owing to the paucity of genome-wide data at the within-individual and population levels, the broad patterns of these two forms of variation remain poorly understood. Here, we analyze 1,804 complete mitochondrial genome sequences from Daphnia pulex, Daphnia pulicaria, and Daphnia obtusa. Extensive heteroplasmy is observed in D. obtusa, where the high level of intraclonal divergence must have resulted from a biparental-inheritance event, and recombination in the mitochondrial genome is apparent, although perhaps not widespread. Global samples of D. pulex reveal remarkably low mitochondrial effective population sizes, <3% of those for the nuclear genome. In addition, levels of population diversity in mitochondrial and nuclear genomes are uncorrelated across populations, suggesting an idiosyncratic evolutionary history of mitochondria in D. pulex. These population-genetic features appear to be a consequence of background selection associated with highly deleterious mutations arising in the strongly linked mitochondrial genome, which is consistent with polymorphism and divergence data suggesting a predominance of strong purifying selection. Nonetheless, the fixation of mildly deleterious mutations in the mitochondrial genome also appears to be driving positive selection on genes encoded in the nuclear genome whose products are deployed in the mitochondrion.
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Affiliation(s)
- Zhiqiang Ye
- Center for Mechanisms of Evolution, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
| | - Chaoxian Zhao
- Center for Mechanisms of Evolution, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
| | - R. Taylor Raborn
- Center for Mechanisms of Evolution, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
| | - Man Lin
- Center for Mechanisms of Evolution, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
| | - Wen Wei
- Center for Mechanisms of Evolution, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
| | - Yue Hao
- Center for Mechanisms of Evolution, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
| | - Michael Lynch
- Center for Mechanisms of Evolution, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
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Fontaneto D, Viola P, Pizzirani C, Chiesa S, Rossetti A, Amici A, Lucentini L. Mismatches between Morphology and DNA in Italian Partridges May Not Be Explained Only by Recent Artificial Release of Farm-Reared Birds. Animals (Basel) 2022; 12:ani12050541. [PMID: 35268110 PMCID: PMC8908819 DOI: 10.3390/ani12050541] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/20/2021] [Accepted: 12/21/2021] [Indexed: 11/18/2022] Open
Abstract
Translocations and releases of farm-reared birds are considered among the major drivers of genetic pollution with consequent loss of genetic diversity in wild populations. In this study, we aimed to assess the extent of hybridization and introgression in the Italian partridges as a consequence of translocation. We surveyed two mitochondrial markers and one nuclear marker of Alectoris and Perdix from collections (museums and private collections), extant wild populations and farms. Consistent with previous studies, we found haplotypes of allochthonous species within the same genus, likely due to introductions for hunting activities. In addition, we found hybrids between Perdix and Alectoris species with genetic markers from both genera in single individuals. Such introgression was bidirectional and in both mitochondrial and nuclear markers. Counterintuitively, most of the hybrid samples came from collections before the 1950s, when large-scale translocations started, from wild populations where Grey Partridge (Perdix perdix) and Rock Partridge (Alectoris graeca) overlap in their distribution, whereas only one hybrid occurred among the farmed birds. Our results suggest that Perdix and Alectoris species can hybridize in nature and that artificial translocations and releases of farm-reared birds for restocking or reintroduction purposes may be only partially responsible for the genomic mismatches of Italian partridges.
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Affiliation(s)
- Diego Fontaneto
- Molecular Ecology Group (MEG), Water Research Institute (IRSA), National Research Council of Italy (CNR), 28922 Verbania Pallanza, Italy;
| | - Paolo Viola
- Department of Agriculture and Forest Science, University of Tuscia, 01100 Viterbo, Italy;
| | - Claudia Pizzirani
- Department of Chemistry, Biology and Biotechnologies, University of Perugia, 06123 Perugia, Italy; (C.P.); (L.L.)
| | - Stefania Chiesa
- Department of Molecular Sciences and Nanosystems, Ca’ Foscari University of Venice, 30172 Venice, Italy;
- ISPRA—The Italian Institute for Environmental Protection and Research, 00144 Rome, Italy
| | | | - Andrea Amici
- Department of Agriculture and Forest Science, University of Tuscia, 01100 Viterbo, Italy;
- Correspondence: ; Tel.: +39-3391731327
| | - Livia Lucentini
- Department of Chemistry, Biology and Biotechnologies, University of Perugia, 06123 Perugia, Italy; (C.P.); (L.L.)
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Davies OK, Dorey JB, Stevens MI, Gardner MG, Bradford TM, Schwarz MP. Unparalleled mitochondrial heteroplasmy and Wolbachia co-infection in the non-model bee, Amphylaeus morosus. CURRENT RESEARCH IN INSECT SCIENCE 2022; 2:100036. [PMID: 36003268 PMCID: PMC9387454 DOI: 10.1016/j.cris.2022.100036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 04/10/2022] [Accepted: 04/13/2022] [Indexed: 11/22/2022]
Abstract
Mitochondrial heteroplasmy is the occurrence of more than one type of mitochondrial DNA within a single individual. Although generally reported to occur in a small subset of individuals within a species, there are some instances of widespread heteroplasmy across entire populations. Amphylaeus morosus is an Australian native bee species in the diverse and cosmopolitan bee family Colletidae. This species has an extensive geographical range along the eastern Australian coast, from southern Queensland to western Victoria, covering approximately 2,000 km. Seventy individuals were collected from five localities across this geographical range and sequenced using Sanger sequencing for the mitochondrial cytochrome c oxidase subunit I (COI) gene. These data indicate that every individual had the same consistent heteroplasmic sites but no other nucleotide variation, suggesting two conserved and widespread heteroplasmic mitogenomes. Ion Torrent shotgun sequencing revealed that heteroplasmy occurred across multiple mitochondrial protein-coding genes and is unlikely explained by transposition of mitochondrial genes into the nuclear genome (NUMTs). DNA sequence data also demonstrated a consistent co-infection of Wolbachia across the A. morosus distribution with every individual infected with both bacterial strains. Our data are consistent with the presence of two mitogenomes within all individuals examined in this species and suggest a major divergence from standard patterns of mitochondrial inheritance. Because the host's mitogenome and the Wolbachia genome are genetically linked through maternal inheritance, we propose three possible hypotheses that could explain maintenance of the widespread and conserved co-occurring bacterial and mitochondrial genomes in this species.
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Allison TM, Radzvilavicius AL, Dowling DK. Selection for biparental inheritance of mitochondria under hybridization and mitonuclear fitness interactions. Proc Biol Sci 2021; 288:20211600. [PMID: 34875196 PMCID: PMC8651416 DOI: 10.1098/rspb.2021.1600] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Uniparental inheritance (UPI) of mitochondria predominates over biparental inheritance (BPI) in most eukaryotes. However, examples of BPI of mitochondria, or paternal leakage, are becoming increasingly prevalent. Most reported cases of BPI occur in hybrids of distantly related sub-populations. It is thought that BPI in these cases is maladaptive; caused by a failure of female or zygotic autophagy machinery to recognize divergent male-mitochondrial DNA ‘tags’. Yet recent theory has put forward examples in which BPI can evolve under adaptive selection, and empirical studies across numerous metazoan taxa have demonstrated outbreeding depression in hybrids attributable to disruption of population-specific mitochondrial and nuclear genotypes (mitonuclear mismatch). Based on these developments, we hypothesize that BPI may be favoured by selection in hybridizing populations when fitness is shaped by mitonuclear interactions. We test this idea using a deterministic, simulation-based population genetic model and demonstrate that BPI is favoured over strict UPI under moderate levels of gene flow typical of hybridizing populations. Our model suggests that BPI may be stable, rather than a transient phenomenon, in hybridizing populations.
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Affiliation(s)
- Tom M Allison
- School of Biological Sciences, Monash University, Victoria, Australia
| | | | - Damian K Dowling
- School of Biological Sciences, Monash University, Victoria, Australia
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Abstract
Mitochondria are organelles with vital functions in almost all eukaryotic cells. Often described as the cellular 'powerhouses' due to their essential role in aerobic oxidative phosphorylation, mitochondria perform many other essential functions beyond energy production. As signaling organelles, mitochondria communicate with the nucleus and other organelles to help maintain cellular homeostasis, allow cellular adaptation to diverse stresses, and help steer cell fate decisions during development. Mitochondria have taken center stage in the research of normal and pathological processes, including normal tissue homeostasis and metabolism, neurodegeneration, immunity and infectious diseases. The central role that mitochondria assume within cells is evidenced by the broad impact of mitochondrial diseases, caused by defects in either mitochondrial or nuclear genes encoding for mitochondrial proteins, on different organ systems. In this Review, we will provide the reader with a foundation of the mitochondrial 'hardware', the mitochondrion itself, with its specific dynamics, quality control mechanisms and cross-organelle communication, including its roles as a driver of an innate immune response, all with a focus on development, disease and aging. We will further discuss how mitochondrial DNA is inherited, how its mutation affects cell and organismal fitness, and current therapeutic approaches for mitochondrial diseases in both model organisms and humans.
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Affiliation(s)
- Marlies P. Rossmann
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA 01238, USA
- Stem Cell Program and Division of Hematology/Oncology, Boston Children's Hospital, Harvard Medical School, Howard Hughes Medical Institute, Boston, MA 02115, USA
| | - Sonia M. Dubois
- Division of Hematology/Oncology, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Suneet Agarwal
- Division of Hematology/Oncology, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Leonard I. Zon
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA 01238, USA
- Stem Cell Program and Division of Hematology/Oncology, Boston Children's Hospital, Harvard Medical School, Howard Hughes Medical Institute, Boston, MA 02115, USA
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Schwartz JH. Evolution, systematics, and the unnatural history of mitochondrial DNA. Mitochondrial DNA A DNA Mapp Seq Anal 2021; 32:126-151. [PMID: 33818247 DOI: 10.1080/24701394.2021.1899165] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The tenets underlying the use of mtDNA in phylogenetic and systematic analyses are strict maternal inheritance, clonality, homoplasmy, and difference due to mutation: that is, there are species-specific mtDNA sequences and phylogenetic reconstruction is a matter of comparing these sequences and inferring closeness of relatedness from the degree of sequence similarity. Yet, how mtDNA behavior became so defined is mysterious. Even though early studies of fertilization demonstrated for most animals that not only the head, but the sperm's tail and mitochondria-bearing midpiece penetrate the egg, the opposite - only the head enters the egg - became fact, and mtDNA conceived as maternally transmitted. When midpiece/tail penetration was realized as true, the conceptions 'strict maternal inheritance', etc., and their application to evolutionary endeavors, did not change. Yet there is mounting evidence of paternal mtDNA transmission, paternal and maternal combination, intracellular recombination, and intra- and intercellular heteroplasmy. Clearly, these phenomena impact the systematic and phylogenetic analysis of mtDNA sequences.
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Affiliation(s)
- Jeffrey H Schwartz
- Department of Anthropology, University of Pittsburgh, Pittsburgh, PA, USA
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Stille M, Gasteratos I, Stille B. Alien and invasive terrestrial vertebrate species on Corfu, Ionian Islands, Greece. JOURNAL OF VERTEBRATE BIOLOGY 2021. [DOI: 10.25225/jvb.20126] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
| | | | - Bo Stille
- Kokkini Kefalovrysso, Corfu, Greece; e-mail: ,
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Distant hybrids of Heliocidaris crassispina (♀) and Strongylocentrotus intermedius (♂): identification and mtDNA heteroplasmy analysis. BMC Evol Biol 2020; 20:101. [PMID: 32781979 PMCID: PMC7422570 DOI: 10.1186/s12862-020-01667-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 07/30/2020] [Indexed: 11/27/2022] Open
Abstract
Background Distant hybridization between the sea urchin Heliocidaris crassispina (♀) and the sea urchin Strongylocentrotus intermedius (♂) was successfully performed under laboratory conditions. A new variety of hybrid sea urchin (HS hybrid) was obtained. However, the early-development success rates for the HS hybrids were significantly lower than those of purebred H. crassispina or S. intermedius offspring. In addition, it was difficult to distinguish the HS-hybrid adults from the pure H. crassispina adults, which might lead to confusion in subsequent breeding attempts. In this study, we attempted to develop a method to quickly and effectively identify HS hybrids, and to preliminarily investigate the molecular mechanisms underlying the poor early-development success rates in the HS hybrids. Results The hybrid sea urchins (HS hybrids) were identified both morphologically and molecularly. There were no significant differences in the test height to test diameter ratios between the HS hybrids and the parents. The number and arrangement of ambulacral pore pairs in the HS hybrids differed from those of the parental lines, which might serve as a useful morphological character for the identification of the HS hybrids. A primer pair that identified the HS hybrids was screened by comparing the mitochondrial genomes of the parental lines. Moreover, paternal leakage induced mitochondrial DNA heteroplasmy in the HS hybrids, which might explain the low rates of early development success in these hybrids. Conclusions The distant-hybrid sea urchins were accurately identified using comparative morphological and molecular genetic methods. The first evidence of mtDNA heteroplasmy after the distant hybridization of an echinoderm was also provided.
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Kannan A, Rama Rao S, Ratnayeke S, Yow YY. The efficiency of universal mitochondrial DNA barcodes for species discrimination of Pomacea canaliculata and Pomacea maculata. PeerJ 2020; 8:e8755. [PMID: 32274263 PMCID: PMC7127494 DOI: 10.7717/peerj.8755] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 02/16/2020] [Indexed: 12/05/2022] Open
Abstract
Invasive apple snails, Pomacea canaliculata and P. maculata, have a widespread distribution globally and are regarded as devastating pests of agricultural wetlands. The two species are morphologically similar, which hinders species identification via morphological approaches and species-specific management efforts. Advances in molecular genetics may contribute effective diagnostic tools to potentially resolve morphological ambiguity. DNA barcoding has revolutionized the field of taxonomy by providing an alternative, simple approach for species discrimination, where short sections of DNA, the cytochrome c oxidase subunit I (COI) gene in particular, are used as ‘barcodes’ to delineate species boundaries. In our study, we aimed to assess the effectiveness of two mitochondrial markers, the COI and 16S ribosomal deoxyribonucleic acid (16S rDNA) markers for DNA barcoding of P. canaliculata and P. maculata. The COI and 16S rDNA sequences of 40 Pomacea specimens collected from six localities in Peninsular Malaysia were analyzed to assess their barcoding performance using phylogenetic methods and distance-based assessments. The results confirmed both markers were suitable for barcoding P. canaliculata and P. maculata. The phylogenies of the COI and 16S rDNA markers demonstrated species-specific monophyly and were largely congruent with the exception of one individual. The COI marker exhibited a larger barcoding gap (6.06–6.58%) than the 16S rDNA marker (1.54%); however, the magnitude of barcoding gap generated within the barcoding region of the 16S rDNA marker (12-fold) was bigger than the COI counterpart (approximately 9-fold). Both markers were generally successful in identifying P. canaliculata and P. maculata in the similarity-based DNA identifications. The COI + 16S rDNA concatenated dataset successfully recovered monophylies of P. canaliculata and P. maculata but concatenation did not improve individual datasets in distance-based analyses. Overall, although both markers were successful for the identification of apple snails, the COI molecular marker is a better barcoding marker and could be utilized in various population genetic studies of P. canaliculata and P. maculata.
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Affiliation(s)
- Adrian Kannan
- Department of Biological Sciences, School of Science & Technology, Sunway University, Selangor Darul Ehsan, Malaysia
| | - Suganiya Rama Rao
- Department of Biological Sciences, School of Science & Technology, Sunway University, Selangor Darul Ehsan, Malaysia
| | - Shyamala Ratnayeke
- Department of Biological Sciences, School of Science & Technology, Sunway University, Selangor Darul Ehsan, Malaysia
| | - Yoon-Yen Yow
- Department of Biological Sciences, School of Science & Technology, Sunway University, Selangor Darul Ehsan, Malaysia
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Rodríguez-Pena E, Verísimo P, Fernández L, González-Tizón A, Bárcena C, Martínez-Lage A. High incidence of heteroplasmy in the mtDNA of a natural population of the spider crab Maja brachydactyla. PLoS One 2020; 15:e0230243. [PMID: 32191743 PMCID: PMC7082002 DOI: 10.1371/journal.pone.0230243] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Accepted: 02/26/2020] [Indexed: 12/19/2022] Open
Abstract
Mitochondria are mostly inherited by maternal via, that is, only mitochondria from eggs are retained in the embryos. However, this general assumption of uniparentally transmitted, homoplasmic and non-recombining mitochondrial genomes is becoming more and more controversial. The presence of different sequences of mtDNA within a cell or individual, known as heteroplasmy, is increasingly reported in several taxon of animals, such as molluscs, arthropods and vertebrates. In this work, a considerable frequency of heteroplasmy were detected in the COI and 16S genes of the spider crab Maja brachydactyla, possibly associated to hybridisation with the congeneric species Maja squinado. This finding is a fact to keep in mind before addressing molecular analyses based on mitochondrial markers, since the assumption of maternal inheritance could lead to erroneous results. As M. brachydactyla is a commercial species, heteroplasmy is an important aspect to take into account for the fisheries management of this resource, since effective population size could be overestimated.
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Affiliation(s)
- Elba Rodríguez-Pena
- Dpto. de Biología, Facultad de Ciencias, Centro de Investigaciones Científicas Avazadas, Universidade da Coruña, A Coruña, Spain
| | - Patricia Verísimo
- Dpto. de Biología, Facultad de Ciencias, Centro de Investigaciones Científicas Avazadas, Universidade da Coruña, A Coruña, Spain
| | - Luis Fernández
- Dpto. de Biología, Facultad de Ciencias, Centro de Investigaciones Científicas Avazadas, Universidade da Coruña, A Coruña, Spain
| | - Ana González-Tizón
- Dpto. de Biología, Facultad de Ciencias, Centro de Investigaciones Científicas Avazadas, Universidade da Coruña, A Coruña, Spain
| | - Covadonga Bárcena
- Dpto. de Biología, Facultad de Ciencias, Centro de Investigaciones Científicas Avazadas, Universidade da Coruña, A Coruña, Spain
| | - Andrés Martínez-Lage
- Dpto. de Biología, Facultad de Ciencias, Centro de Investigaciones Científicas Avazadas, Universidade da Coruña, A Coruña, Spain
- * E-mail:
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15
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Paternal leakage of mitochondrial DNA and maternal inheritance of heteroplasmy in Drosophila hybrids. Sci Rep 2020; 10:2599. [PMID: 32054873 PMCID: PMC7018837 DOI: 10.1038/s41598-020-59194-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 01/07/2020] [Indexed: 11/09/2022] Open
Abstract
Mitochondrial DNA (mtDNA) is maternally transmitted in animals and therefore, individuals are expected to have a single mtDNA haplotype (homoplasmy). Yet, heteroplasmic individuals have been observed in a large number of animal species. Heteroplasmy may emerge as a result of somatic mtDNA mutations, paternal leakage during fertilization or be inherited from a heteroplasmic mother. Understanding the causes of heteroplasmy could shed light into the evolution of mtDNA inheritance. In this study we examined heteroplasmy in progeny from heterospecific crosses of Drosophila for two consecutive generations. We studied the generation of heteroplasmy from paternal leakage and the maternal transmission of heteroplasmy. Our data reveal non-random patterns in the emergence and transmission of heteroplasmy and suggest that heteroplasmy depends on the family of origin.
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16
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Dufresnes C, Pribille M, Alard B, Gonçalves H, Amat F, Crochet PA, Dubey S, Perrin N, Fumagalli L, Vences M, Martínez-Solano I. Integrating hybrid zone analyses in species delimitation: lessons from two anuran radiations of the Western Mediterranean. Heredity (Edinb) 2020; 124:423-438. [PMID: 31959977 DOI: 10.1038/s41437-020-0294-z] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Revised: 01/08/2020] [Accepted: 01/10/2020] [Indexed: 12/19/2022] Open
Abstract
Molecular ecologists often rely on phylogenetic evidence for assessing the species-level systematics of newly discovered lineages. Alternatively, the extent of introgression at phylogeographic transitions can provide a more direct test to assign candidate taxa into subspecies or species categories. Here, we compared phylogenetic versus hybrid zone approaches of species delimitation in two groups of frogs from the Western Mediterranean region (Discoglossus and Pelodytes), by using genomic data (ddRAD). In both genera, coalescent analyses recovered almost all nominal taxa as "species". However, the least-diverged pairs D. g. galganoi/jeanneae and P. punctatus/hespericus admix over hundreds of kilometers, suggesting that they have not yet developed strong reproductive isolation and should be treated as conspecifics. In contrast, the comparatively older D. scovazzi/pictus and P. atlanticus/ibericus form narrow contact zones, consistent with species distinctiveness. Due to their complementarity, we recommend taxonomists to combine phylogenomics with hybrid zone analyses to scale the gray zone of speciation, i.e., the evolutionary window separating widely admixing lineages versus nascent reproductively isolated species. The radically different transitions documented here conform to the view that genetic incompatibilities accumulating with divergence generate a weak barrier to gene flow for long periods of time, until their effects multiply and the speciation process then advances rapidly. Given the variability of the gray zone among taxonomic groups, at least from our current abilities to measure it, we recommend to customize divergence thresholds within radiations to categorize lineages for which no direct test of speciation is possible.
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Affiliation(s)
- Christophe Dufresnes
- Department of Animal and Plant Sciences, University of Sheffield, Sheffield, UK. .,Laboratory for Conservation Biology, Department of Ecology & Evolution, University of Lausanne, Lausanne, Switzerland. .,Hintermann & Weber, Montreux, Switzerland.
| | - Manon Pribille
- Laboratory for Conservation Biology, Department of Ecology & Evolution, University of Lausanne, Lausanne, Switzerland
| | - Bérénice Alard
- CIBIO-InBIO, Campus Agrário de Vairão, Universidade do Porto, Vairão, Portugal
| | - Helena Gonçalves
- CIBIO-InBIO, Campus Agrário de Vairão, Universidade do Porto, Vairão, Portugal.,Museu de História Natural e da Ciência, Universidade do Porto, Porto, Portugal
| | - Fèlix Amat
- Àrea d'Herpetologia, Museu de Granollers-Ciències Naturals, Francesc Macià 51, 08400, Granollers, Catalonia, Spain
| | - Pierre-André Crochet
- CEFE, CNRS, University of Montpellier, University Paul Valéry Montpellier 3, EPHE, IRD, Montpellier, France
| | - Sylvain Dubey
- Hintermann & Weber, Montreux, Switzerland.,Department of Ecology & Evolution, University of Lausanne, Lausanne, Switzerland.,AgroSustain SA, Nyon, Switzerland
| | - Nicolas Perrin
- Department of Ecology & Evolution, University of Lausanne, Lausanne, Switzerland
| | - Luca Fumagalli
- Laboratory for Conservation Biology, Department of Ecology & Evolution, University of Lausanne, Lausanne, Switzerland
| | - Miguel Vences
- Zoological Institute, Technische Universität Braunschweig, Braunschweig, Germany
| | - Iñigo Martínez-Solano
- Departamento de Biodiversidad y Biología Evolutiva, Museo Nacional de Ciencias Naturales (MNCN-CSIC), Madrid, Spain
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17
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van den Ameele J, Li AY, Ma H, Chinnery PF. Mitochondrial heteroplasmy beyond the oocyte bottleneck. Semin Cell Dev Biol 2020; 97:156-166. [DOI: 10.1016/j.semcdb.2019.10.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 09/17/2019] [Accepted: 10/01/2019] [Indexed: 12/31/2022]
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18
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Ancient hybridization and mtDNA introgression behind current paternal leakage and heteroplasmy in hybrid zones. Sci Rep 2019; 9:19177. [PMID: 31844110 PMCID: PMC6914795 DOI: 10.1038/s41598-019-55764-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 11/29/2019] [Indexed: 01/18/2023] Open
Abstract
Hybridization between heterospecific individuals has been documented as playing a direct role in promoting paternal leakage and mitochondrial heteroplasmy in both natural populations and laboratory conditions, by relaxing the egg-sperm recognition mechanisms. Here, we tested the hypothesis that hybridization can lead to mtDNA heteroplasmy also indirectly via mtDNA introgression. By using a phylogenetic approach, we showed in two reproductively isolated beetle species, Ochthebius quadricollis and O. urbanelliae, that past mtDNA introgression occurred between them in sympatric populations. Then, by developing a multiplex allele-specific PCR assay, we showed the presence of heteroplasmic individuals and argue that their origin was through paternal leakage following mating between mtDNA-introgressed and pure conspecific individuals. Our results highlight that mtDNA introgression can contribute to promote paternal leakage, generating genetic novelty in a way that has been overlooked to date. Furthermore, they highlight that the frequency and distribution of mtDNA heteroplasmy can be deeply underestimated in natural populations, as i) the commonly used PCR-Sanger sequencing approach can fail to detect mitochondrial heteroplasmy, and ii) specific studies aimed at searching for it in populations where mtDNA-introgressed and pure individuals co-occur remain scarce, despite the fact that mtDNA introgression has been widely documented in several taxa and populations.
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19
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Päckert M, Giacalone G, Lo Valvo M, Kehlmaier C. Mitochondrial heteroplasmy in an avian hybrid form ( Passer italiae: Aves, Passeriformes). MITOCHONDRIAL DNA PART B-RESOURCES 2019; 4:3809-3812. [PMID: 33366199 PMCID: PMC7707613 DOI: 10.1080/23802359.2019.1682477] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Mitochondrial heteroplasmy is the result from biparental transmission of mitochondrial DNA (mtDNA) to the offspring. In such rare cases, maternal and paternal mtDNA is present in the same individual. Though recent studies suggested that mtDNA heteroplasmy might be more common than previously anticipated, that phenomenon is still poorly documented and was mostly detected in case studies on hybrid populations. The Italian sparrow, Passer italiae is a homoploid hybrid form that occurs all across the Italian Peninsula mostly under strict absence of either of its parent species, the house sparrow (P. domesticus) and the Spanish sparrow (P. hispaniolensis). In this study, we document a new case of mitochondrial heteroplasmy from two island populations of P. italiae (Ustica and Lipari). Our analysis was based on the mitochondrial NADH dehydrogenase subunit 2 (ND2) that allows for a clear distinction between mitochondrial lineages of the two parental species. We amplified and sequenced the mitochondrial ND2 gene with specifically designed primer combinations for each of the two parental species. In two of our study populations, a single individual carried two different ND2 haplotypes from each of the two parental lineages. These findings contribute to current knowledge on the still poorly documented phenomenon of paternal leakage in vertebrates.
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Affiliation(s)
- Martin Päckert
- Senckenberg Naturhistorische Sammlungen, Dresden, Germany
| | | | - Mario Lo Valvo
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche, Universita degli Studi di Palermo, Palermo, Italy
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20
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Torres L, Welch AJ, Zanchetta C, Chesser RT, Manno M, Donnadieu C, Bretagnolle V, Pante E. Evidence for a duplicated mitochondrial region in Audubon's shearwater based on MinION sequencing. Mitochondrial DNA A DNA Mapp Seq Anal 2018; 30:256-263. [PMID: 30043666 DOI: 10.1080/24701394.2018.1484116] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Mitochondrial genetic markers have been extensively used to study the phylogenetics and phylogeography of many birds, including seabirds of the order Procellariiformes. Evidence suggests that part of the mitochondrial genome of Procellariiformes, especially albatrosses, is duplicated, but no DNA fragment covering the entire duplication has been sequenced. We sequenced the complete mitochondrial genome of a non-albatross species of Procellariiformes, Puffinus lherminieri (Audubon's shearwater) using the long-read MinION (ONT) technology. Two mitogenomes were assembled from the same individual, differing by 52 SNPs and in length. The shorter was 19 kb long while the longer was 21 kb, due to the presence of two identical copies of nad6, three tRNA, and two dissimilar copies of the control region (CR). Contrary to albatrosses, cob was not duplicated. We further detected a complex repeated region of undetermined length between the CR and 12S. Long-read sequencing suggests heteroplasmy and a novel arrangement within the duplicated region, indicating a complex evolution of the mitogenome in Procellariiformes.
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Affiliation(s)
- Lucas Torres
- a Centre d'Etudes Biologiques de Chizé, UMR 7372, CNRS , Université de La Rochelle , Villiers en Bois , France.,b Littoral, Environnement et Sociétés, UMR 7266 CNRS , Université de La Rochelle , La Rochelle , France
| | | | - Catherine Zanchetta
- d Centre INRA de Toulouse Midi-Pyrénées , US1426 Get-PlaGe , Castanet-Tolosan , France
| | - R Terry Chesser
- e USGS Patuxent Wildlife Research Center , National Museum of Natural History, Smithsonian Institution , Washington , DC , USA
| | - Maxime Manno
- d Centre INRA de Toulouse Midi-Pyrénées , US1426 Get-PlaGe , Castanet-Tolosan , France
| | - Cécile Donnadieu
- d Centre INRA de Toulouse Midi-Pyrénées , US1426 Get-PlaGe , Castanet-Tolosan , France
| | - Vincent Bretagnolle
- a Centre d'Etudes Biologiques de Chizé, UMR 7372, CNRS , Université de La Rochelle , Villiers en Bois , France
| | - Eric Pante
- b Littoral, Environnement et Sociétés, UMR 7266 CNRS , Université de La Rochelle , La Rochelle , France
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21
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Dupuis JR, Guerrero FD, Skoda SR, Phillips PL, Welch JB, Schlater JL, Azeredo-Espin AML, Pérez de León AA, Geib SM. Molecular Characterization of the 2016 New World Screwworm (Diptera: Calliphoridae) Outbreak in the Florida Keys. JOURNAL OF MEDICAL ENTOMOLOGY 2018; 55:938-946. [PMID: 29788142 DOI: 10.1093/jme/tjy078] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2018] [Indexed: 06/08/2023]
Abstract
New World screwworm (NWS), Cochliomyia hominivorax (Coquerel 1858) (Diptera: Calliphoridae), is a myiasis-causing fly that can be a serious threat to the health of livestock, wildlife, and humans. Its progressive eradication from the southern United States, Mexico, and Central America from the 1950s to 2000s is an excellent example of successful pest management using sterile insect technique (SIT). In late 2016, autochthonous NWS were detected in the Florida Keys, representing this species' first invasion in the United States in >30 yr. Rapid use of quarantine and SIT was successful in eliminating the infestation by early 2017; however, the geographic source of this infestation remains unknown. Here, we use amplicon sequencing to generate mitochondrial and nuclear sequence data representing all confirmed cases of NWS from this infestation, and compare these sequences to preexisting data sets sampling the native distribution of NWS. We ask two questions regarding the FL Keys outbreak. First, is this infestation the result of a single invasion from one source, or multiple invasions from different sources? And second, what is the geographic origin of this invasion? We found virtually no sequence variation between specimens collected from the FL Keys outbreak, which is consistent with a single source of introduction. However, we also found very little geographic resolution in any of the data sets, which precludes identification of the source of this outbreak. Our lack of success in answering our second question speaks to the need for finer-scale genetic or genomic assessments of NWS population structure, which would facilitate source determination of potential future outbreaks.
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Affiliation(s)
- Julian R Dupuis
- U.S. Department of Agriculture-Agricultural Research Service, Daniel K. Inouye U.S. Pacific Basin Agricultural Research Center, Hilo, HI
- Department of Plant and Environmental Protection Services, University of Hawaii at Manoa, Honolulu, HI
| | - Felix D Guerrero
- USDA-ARS, Knipling-Bushland U.S. Livestock Insects Research Laboratory and Veterinary Pest Genomics Center, Kerrville, TX
| | - Steven R Skoda
- USDA-ARS, Knipling-Bushland U.S. Livestock Insects Research Laboratory and Veterinary Pest Genomics Center, Kerrville, TX
| | - Pamela L Phillips
- USDA-ARS, Knipling-Bushland U.S. Livestock Insects Research Laboratory and Veterinary Pest Genomics Center, Kerrville, TX
| | - John B Welch
- USDA-APHIS, International Services, Action Programs, College Station, TX
| | - Jack L Schlater
- USDA-APHIS, National Veterinary Services Laboratory, Ames, IA
| | - Ana Maria L Azeredo-Espin
- Centro de Biologia Molecular e Engenharia Genética and Departamento de Genética, Evolução e Bioagentes, Instituto de Biologia, Universidade Estadual de Campinas Instituto de Biologia, São Paulo, Brazil
| | - Adalberto A Pérez de León
- USDA-ARS, Knipling-Bushland U.S. Livestock Insects Research Laboratory and Veterinary Pest Genomics Center, Kerrville, TX
| | - Scott M Geib
- U.S. Department of Agriculture-Agricultural Research Service, Daniel K. Inouye U.S. Pacific Basin Agricultural Research Center, Hilo, HI
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22
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Koch RE, Hill GE. Behavioural mating displays depend on mitochondrial function: a potential mechanism for linking behaviour to individual condition. Biol Rev Camb Philos Soc 2018; 93:1387-1398. [DOI: 10.1111/brv.12400] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Revised: 01/15/2018] [Accepted: 01/19/2018] [Indexed: 12/22/2022]
Affiliation(s)
- Rebecca E. Koch
- Department of Biological Sciences; Auburn University; Auburn AL 36849 U.S.A
| | - Geoffrey E. Hill
- Department of Biological Sciences; Auburn University; Auburn AL 36849 U.S.A
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