1
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Bramwell G, Schultz AG, Jennings G, Nini UN, Vanbeek C, Biro PA, Beckmann C, Dujon AM, Thomas F, Sherman CDH, Ujvari B. The effect of mitochondrial recombination on fertilization success in blue mussels. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 913:169491. [PMID: 38154641 DOI: 10.1016/j.scitotenv.2023.169491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 12/12/2023] [Accepted: 12/17/2023] [Indexed: 12/30/2023]
Abstract
The presence of doubly uniparental inheritance (DUI) in bivalves represents a unique mode of mitochondrial transmission, whereby paternal (male-transmitted M-type) and maternal (female-transmitted F-type) haplotypes are transmitted to offspring separately. Male embryos retain both haplotypes, but the M-type is selectively removed from females. Due to the presence of heteroplasmy in males, mtDNA can recombine resulting in a 'masculinized' haplotype referred to as Mf-type. While mtDNA recombination is usually rare, it has been recorded in multiple mussel species across the Northern Hemisphere. Given that mitochondria are the powerhouse of the cell, different mtDNA haplotypes may have different selective advantages under diverse environmental conditions. This may be particularly important for sperm fitness and fertilization success. In this study we aimed to i) determine the presence, prevalence of the Mf-type in Australian blue mussels (Mytilus sp.) and ii) investigate the effect of Mf-mtDNA on sperm performance (a fitness correlate). We found a high prevalence of recombined mtDNA (≈35 %) located within the control region of the mitochondrial genome, which occurred only in specimens that contained Southern Hemisphere mtDNA. The presence of two female mitotypes were identified in the studied mussels, one likely originating from the Northern Hemisphere, and the other either representing the endemic M. planulatus species or introduced genotypes from the Southern Hemisphere. Despite having recombination events present in a third of the studied population, analysis of sperm performance indicated no difference in fertilization success related to mitotype.
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Affiliation(s)
- Georgina Bramwell
- School of Life and Environmental Sciences, Deakin University, Waurn Ponds, VIC, Australia
| | - Aaron G Schultz
- School of Life and Environmental Sciences, Deakin University, Waurn Ponds, VIC, Australia
| | - Geordie Jennings
- Queenscliff Marine Research Facility and Shellfish Hatchery, Victorian Fisheries Australia, Queenscliff, VIC, Australia
| | - Urmi Nishat Nini
- School of Life and Environmental Sciences, Deakin University, Waurn Ponds, VIC, Australia
| | - Caitlin Vanbeek
- School of Life and Environmental Sciences, Deakin University, Waurn Ponds, VIC, Australia
| | - Peter A Biro
- School of Life and Environmental Sciences, Deakin University, Waurn Ponds, VIC, Australia
| | - Christa Beckmann
- School of Life and Environmental Sciences, Deakin University, Waurn Ponds, VIC, Australia; School of Science, Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia; Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia
| | - Antoine M Dujon
- School of Life and Environmental Sciences, Deakin University, Waurn Ponds, VIC, Australia; CREEC, MIVEGEC, UMR IRD 224-CNRS 5290-Université de Montpellier, Montpellier, France
| | - Frédéric Thomas
- CREEC, MIVEGEC, UMR IRD 224-CNRS 5290-Université de Montpellier, Montpellier, France
| | - Craig D H Sherman
- School of Life and Environmental Sciences, Deakin University, Waurn Ponds, VIC, Australia; Queenscliff Marine Research Facility and Shellfish Hatchery, Victorian Fisheries Australia, Queenscliff, VIC, Australia
| | - Beata Ujvari
- School of Life and Environmental Sciences, Deakin University, Waurn Ponds, VIC, Australia.
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2
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Skazina M, Ponomartsev N, Maiorova M, Khaitov V, Marchenko J, Lentsman N, Odintsova N, Strelkov P. Genetic features of bivalve transmissible neoplasia in blue mussels from the Kola Bay (Barents Sea) suggest a recent trans-Arctic migration of the cancer lineages. Mol Ecol 2023; 32:5724-5741. [PMID: 37795906 DOI: 10.1111/mec.17157] [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: 03/15/2023] [Revised: 09/20/2023] [Accepted: 09/22/2023] [Indexed: 10/06/2023]
Abstract
Ecology and biogeography of bivalve transmissible neoplasia (BTN) are underexplored due to its recent discovery and a challenging diagnostics. Blue mussels harbour two evolutionary lineages of BTN, MtrBTN1 and MtrBTN2, both derived from Mytilus trossulus. MtrBTN1 has been found only in M. trossulus from North Pacific. MtrBTN2 parasitizes different Mytilus spp. worldwide. BTN in M. trossulus in the Atlantic sector has never been studied. We looked for BTN in mussels from the Barents Sea using flow cytometry of cells, qPCR with primers specific to cancer-associated alleles and sequencing of mtDNA and nuclear loci. Both MtrBTN1 and MtrBTN2 were present in our material, though their prevalence was low (~0.4%). All cancers parasitized M. trossulus except one, MtrBTN1, which was found in a hybrid between M. trossulus and M. edulis. The mtDNA haplotypes found in both lineages were nearly identical to those known from the Northwest Pacific but not from elsewhere. Our results suggest that these two lineages may have arrived in the Barents Sea in recent decades with the maritime transport along the Northern Sea Route. A young evolutionary age of MtrBTN1 seems to indicate that it is an emerging disease in the process of niche expansion. Comparing the new and the published sequence data on tumour suppressor p53, we proved that the prevalence of BTN in mussels can reach epizootic levels. The finding of diverse recombinants between paternally and maternally inherited mtDNAs in somatic tissues of M. trossulus was an unexpected result of our study.
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Affiliation(s)
- Maria Skazina
- St. Petersburg State University, St. Petersburg, Russia
| | | | - Mariia Maiorova
- National Scientific Center of Marine Biology, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia
| | - Vadim Khaitov
- St. Petersburg State University, St. Petersburg, Russia
- Kandalaksha State Nature Reserve, Kandalaksha, Russia
| | | | | | - Nelly Odintsova
- National Scientific Center of Marine Biology, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia
| | - Petr Strelkov
- St. Petersburg State University, St. Petersburg, Russia
- Laboratory of Monitoring and Conservation of Natural Arctic Ecosystems, Murmansk Arctic State University, Murmansk, Russia
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3
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Ahn JC, Coyle SM. Comparative profiling of cellular gait on adhesive micropatterns defines statistical patterns of activity that underlie native and cancerous cell dynamics. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.10.27.564389. [PMID: 37961146 PMCID: PMC10634873 DOI: 10.1101/2023.10.27.564389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
Cell dynamics are powered by patterns of activity, but it is not straightforward to quantify these patterns or compare them across different environmental conditions or cell-types. Here we digitize the long-term shape fluctuations of metazoan cells grown on micropatterned fibronectin islands to define and extract statistical features of cell dynamics without the need for genetic modification or fluorescence imaging. These shape fluctuations generate single-cell morphological signals that can be decomposed into two major components: a continuous, slow-timescale meandering of morphology about an average steady-state shape; and short-lived "events" of rapid morphology change that sporadically occur throughout the timecourse. By developing statistical metrics for each of these components, we used thousands of hours of single-cell data to quantitatively define how each axis of cell dynamics was impacted by environmental conditions or cell-type. We found the size and spatial complexity of the micropattern island modulated the statistics of morphological events-lifetime, frequency, and orientation-but not its baseline shape fluctuations. Extending this approach to profile a panel of triple negative breast cancer cell-lines, we found that different cell-types could be distinguished from one another along specific and unique statistical axes of their behavior. Our results suggest that micropatterned substrates provide a generalizable method to build statistical profiles of cell dynamics to classify and compare emergent cell behaviors.
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Affiliation(s)
- John C. Ahn
- Department of Biochemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
- Integrated Program in Biochemistry Graduate Program, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
| | - Scott M. Coyle
- Department of Biochemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
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4
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Burioli EAV, Hammel M, Vignal E, Vidal-Dupiol J, Mitta G, Thomas F, Bierne N, Destoumieux-Garzón D, Charrière GM. Transcriptomics of mussel transmissible cancer MtrBTN2 suggests accumulation of multiple cancer traits and oncogenic pathways shared among bilaterians. Open Biol 2023; 13:230259. [PMID: 37816387 PMCID: PMC10564563 DOI: 10.1098/rsob.230259] [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: 08/02/2023] [Accepted: 09/12/2023] [Indexed: 10/12/2023] Open
Abstract
Transmissible cancer cell lines are rare biological entities giving rise to diseases at the crossroads of cancer and parasitic diseases. These malignant cells have acquired the amazing capacity to spread from host to host. They have been described only in dogs, Tasmanian devils and marine bivalves. The Mytilus trossulus bivalve transmissible neoplasia 2 (MtrBTN2) lineage has even acquired the capacity to spread inter-specifically between marine mussels of the Mytilus edulis complex worldwide. To identify the oncogenic processes underpinning the biology of these atypical cancers we performed transcriptomics of MtrBTN2 cells. Differential expression, enrichment, protein-protein interaction network, and targeted analyses were used. Overall, our results suggest the accumulation of multiple cancerous traits that may be linked to the long-term evolution of MtrBTN2. We also highlight that vertebrate and lophotrochozoan cancers could share a large panel of common drivers, which supports the hypothesis of an ancient origin of oncogenic processes in bilaterians.
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Affiliation(s)
- E A V Burioli
- IHPE, Univ Montpellier, CNRS, IFREMER, Univ Perpignan Via Domitia, Montpellier, France
| | - M Hammel
- IHPE, Univ Montpellier, CNRS, IFREMER, Univ Perpignan Via Domitia, Montpellier, France
- ISEM, Univ Montpellier, CNRS, EPHE, IRD, Montpellier, France
| | - E Vignal
- IHPE, Univ Montpellier, CNRS, IFREMER, Univ Perpignan Via Domitia, Montpellier, France
| | - J Vidal-Dupiol
- IHPE, Univ Montpellier, CNRS, IFREMER, Univ Perpignan Via Domitia, Montpellier, France
| | - G Mitta
- IFREMER, UMR 241 Écosystèmes Insulaires Océaniens, Labex Corail, Centre Ifremer du Pacifique, Tahiti, Polynésie française
| | - F Thomas
- CREEC/CANECEV (CREES), MIVEGEC, Unité Mixte de Recherches, IRD 224-CNRS 5290-Université de Montpellier, Montpellier, France
| | - N Bierne
- ISEM, Univ Montpellier, CNRS, EPHE, IRD, Montpellier, France
| | - D Destoumieux-Garzón
- IHPE, Univ Montpellier, CNRS, IFREMER, Univ Perpignan Via Domitia, Montpellier, France
| | - G M Charrière
- IHPE, Univ Montpellier, CNRS, IFREMER, Univ Perpignan Via Domitia, Montpellier, France
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5
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Status and Trends in the Rate of Introduction of Marine Non-Indigenous Species in European Seas. DIVERSITY 2022. [DOI: 10.3390/d14121077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Invasive alien species are a major worldwide driver of biodiversity change. The current study lists verified records of non-indigenous species (NIS) in European marine waters until 2020, with the purpose of establishing a baseline, assessing trends, and discussing appropriate threshold values for good environmental status (GES) according to the relevant European legislation. All NIS records were verified by national experts and trends are presented in six-year assessment periods from 1970 to 2020 according to the European Union Marine Strategy Framework Directive. Altogether, 874 NIS have been introduced to European marine waters until 2020 with the Mediterranean Sea and North-East Atlantic Ocean hosting most of the introductions. Overall, the number of new introductions has steadily increased since 2000. The annual rate of new introductions reached 21 new NIS in European seas within the last six-year assessment period (2012–2017). This increase is likely due to increased human activities and research efforts that have intensified during the early 21st century within European Seas. As Europe seas are not environmentally, nor geographically homogenous, the setting of threshold values for assessing GES requires regional expertise. Further, once management measures are operational, pathway-specific threshold values would enable assessing the effectiveness of such measures.
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6
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Skazina M, Odintsova N, Maiorova M, Frolova L, Dolganova I, Regel K, Strelkov P. Two lineages of bivalve transmissible neoplasia affect the blue mussel Mytilus trossulus Gould in the subarctic Sea of Okhotsk. Curr Zool 2022; 69:91-102. [PMID: 36974151 PMCID: PMC10039180 DOI: 10.1093/cz/zoac012] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 02/16/2022] [Indexed: 11/12/2022] Open
Abstract
Abstract
There are increasing findings of the bivalve transmissible neoplasia derived from the Pacific mussel Mytilus trossulus (MtrBTN) in populations of different Mytilus species worldwide. The Subarctic is an area where this disease has not yet been sought despite the fact that Mytilus spp. are widespread there, and M. trossulus itself is a boreal species. We used flow cytometry of the hemolymph, hemocytology and histology to diagnose disseminated neoplasia in a sample of M. trossulus from Magadan in the subarctic Sea of Okhotsk. Neoplasia was identified in 11 of 214 mussels studied. Using mtDNA COI sequencing, we revealed genotypes identical or nearly identical to known MtrBTN ones in the hemolymph of most of the diseased mussels. Both MtrBTN evolutionary lineages have been identified, the widespread MtrBTN2, and MtrBTN1, so far only known from M. trossulus in British Columbia on the other side of the Pacific from Magadan. In addition, MtrBTN2 was represented by two common diverged mtDNA haplolineages. These conclusions were confirmed for selected cancerous mussels by molecular cloning of COI and additional nuclear and mtDNA genes. On the background of high genetic diversity, different cancers were similar in terms of ploidy (range 4.0 - 5.8n) and nuclear to cell ratio. Our study provides the first description of neoplasia and MtrBTN in mussels from the Sea of Okhotsk and from the Subarctic, of both MtrBTN1 and MtrBTN2 in the same mussel population, and the first direct comparison between these transmissible cancers.
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Affiliation(s)
- Maria Skazina
- Department of Applied Ecology, St Petersburg State University, St. Petersburg 199034, Russia
| | - Nelly Odintsova
- National Scientific Center of Marine Biology, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok 690041, Russia
| | - Mariia Maiorova
- National Scientific Center of Marine Biology, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok 690041, Russia
| | - Lidia Frolova
- National Scientific Center of Marine Biology, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok 690041, Russia
| | - Irina Dolganova
- Department of Applied Ecology, St Petersburg State University, St. Petersburg 199034, Russia
| | - Kira Regel
- Institute of the Biological Problems of the North, Far Eastern Branch of the Russian Academy of Sciences, Magadan 685000, Russia
| | - Petr Strelkov
- Department of Applied Ecology, St Petersburg State University, St. Petersburg 199034, Russia
- Laboratory of Monitoring and Conservation of Natural Arctic Ecosystems,Murmansk Arctic State University, Murmansk 183038, Russia
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7
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Hammel M, Simon A, Arbiol C, Villalba A, Burioli EAV, Pépin JF, Lamy JB, Benabdelmouna A, Bernard I, Houssin M, Charrière G, Destoumieux-Garzon D, Welch J, Metzger MJ, Bierne N. Prevalence and polymorphism of a mussel transmissible cancer in Europe. Mol Ecol 2022; 31:736-751. [PMID: 34192383 PMCID: PMC8716645 DOI: 10.1111/mec.16052] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 06/03/2021] [Accepted: 06/21/2021] [Indexed: 02/06/2023]
Abstract
Transmissible cancers are parasitic malignant cell lineages that have acquired the ability to infect new hosts from the same species, or sometimes related species. First described in dogs and Tasmanian devils, transmissible cancers were later discovered in some marine bivalves affected by a leukaemia-like disease. In Mytilus mussels, two lineages of bivalve transmissible neoplasia (BTN) have been described to date (MtrBTN1 and MtrBTN2), both of which emerged in a Mytilus trossulus founder individual. Here, we performed extensive screening of genetic chimerism, a hallmark of transmissible cancer, by genotyping 106 single nucleotide polymorphisms of 5,907 European Mytilus mussels. Genetic analysis allowed us to simultaneously obtain the genotype of hosts - Mytilus edulis, M. galloprovincialis or hybrids - and the genotype of tumours of heavily infected individuals. In addition, a subset of 222 individuals were systematically genotyped and analysed by histology to screen for possible nontransmissible cancers. We detected MtrBTN2 at low prevalence in M. edulis, and also in M. galloprovincialis and hybrids although at a much lower prevalence. No MtrBTN1 or new BTN were found, but eight individuals with nontransmissible neoplasia were observed at a single polluted site on the same sampling date. We observed a diversity of MtrBTN2 genotypes that appeared more introgressed or more ancestral than MtrBTN1 and reference healthy M. trossulus individuals. The observed polymorphism is probably due to somatic null alleles caused by structural variations or point mutations in primer-binding sites leading to enhanced detection of the host alleles. Despite low prevalence, two sublineages divergent by 10% fixed somatic null alleles and one nonsynonymous mtCOI (mitochondrial cytochrome oxidase I) substitution are cospreading in the same geographical area, suggesting a complex diversification of MtrBTN2 since its emergence and host species shift.
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Affiliation(s)
- Maurine Hammel
- ISEM, Univ Montpellier, CNRS, EPHE, IRD, Montpellier,
France,IHPE, Univ Montpellier, CNRS, Ifremer, Univ Perpignan,
Via Domitia, France
| | - Alexis Simon
- ISEM, Univ Montpellier, CNRS, EPHE, IRD, Montpellier,
France
| | | | - Antonio Villalba
- Centro de Investigacións Mariñas,
Consellería do Mar, Xunta de Galicia, Vilanova de Arousa, Spain,Departamento de Ciencias de la Vida, Universidad de
Alcalá, Alcalá de Henares, Spain.,Research Centre for Experimental Marine Biology and
Biotechnology (PIE), University of the Basque Country (UPV/EHU), Plentzia, Basque
Country, Spain
| | - Erika AV Burioli
- IHPE, Univ Montpellier, CNRS, Ifremer, Univ Perpignan,
Via Domitia, France,LABÉO, Caen, France
| | - Jean-François Pépin
- Laboratoire Environnement ressources des Pertuis
Charentais, IFREMER, La Tremblade, France
| | - Jean-Baptiste Lamy
- Santé, Génétique, Microbiologie des
Mollusques, IFREMER, La Tremblade, France
| | | | | | | | | | | | - John Welch
- Department of Genetics, University of Cambridge,
Downing Street, Cambridge, UK
| | | | - Nicolas Bierne
- ISEM, Univ Montpellier, CNRS, EPHE, IRD, Montpellier,
France
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8
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Baez-Ortega A, Murchison EP. Searching for transmissible cancers among the mussels of Europe. Mol Ecol 2021; 31:719-722. [PMID: 34918407 DOI: 10.1111/mec.16330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 12/03/2021] [Accepted: 12/03/2021] [Indexed: 12/01/2022]
Abstract
Transmissible cancers are infectious malignant cell clones that spread among individuals through transfer of living cancer cells. Several such clones have been identified in various species of marine bivalve molluscs, including mussels, clams and cockles. These parasitic cell lineages cause a leukaemia-like disease called disseminated neoplasia, and are presumed to pass between hosts by ingestion of water-borne cancer cells during filter feeding. Although occasional cases of transmissible cancer had previously been identified in mussels of the genus Mytilus in Europe, the number of distinct clones affecting these animals, and their prevalence, was unknown. In this issue of Molecular Ecology, Hammel et al. (2021, 30) present findings from a large-scale screen for transmissible cancer across 5907 European Mytilus mussels. Using a genotyping approach, Hammel et al. searched for signal of genetic chimerism, which can arise due to infection by transmissible cancer cells. The screen detected a previously identified globally distributed mussel transmissible cancer at very low prevalence, and found no evidence of additional contagious clones. A parallel histological screen additionally revealed low prevalence of a nontransmissible form of disseminated neoplasia. By quantifying the burden of disseminated neoplasia in European mussel populations, this study provides strong foundations for future work investigating the origins, evolution and impacts of transmissible cancers in mussels.
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Affiliation(s)
| | - Elizabeth P Murchison
- Transmissible Cancer Group, Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
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9
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Skazina M, Odintsova N, Maiorova M, Ivanova A, Väinölä R, Strelkov P. First description of a widespread Mytilus trossulus-derived bivalve transmissible cancer lineage in M. trossulus itself. Sci Rep 2021; 11:5809. [PMID: 33707525 PMCID: PMC7970980 DOI: 10.1038/s41598-021-85098-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 02/24/2021] [Indexed: 11/30/2022] Open
Abstract
Two lineages of bivalve transmissible neoplasia (BTN), BTN1 and BTN2, are known in blue mussels Mytilus. Both lineages derive from the Pacific mussel M. trossulus and are identified primarily by their unique genotypes of the nuclear gene EF1α. BTN1 is found in populations of M. trossulus from the Northeast Pacific, while BTN2 has been detected in populations of other Mytilus species worldwide but not in M. trossulus itself. Here we examined M. trossulus from the Sea of Japan (Northwest Pacific) for the presence of BTN. Using hemocytology and flow cytometry of the hemolymph, we confirmed the presence of disseminated neoplasia in our specimens. Cancerous mussels possessed the BTN2 EF1α genotype and two mitochondrial haplotypes with different recombinant control regions, similar to that of common BTN2 lineages. This is the first report of BTN2 in its original host species M. trossulus. A comparison of all available BTN and M. trossulus COI sequences suggests a common and recent origin of BTN2 diversity in populations of M. trossulus outside the Northeast Pacific, possibly in the Northwest Pacific.
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Affiliation(s)
- Maria Skazina
- Saint-Petersburg State University, Saint-Petersburg, Russia, 199178.
| | - Nelly Odintsova
- National Scientific Center of Marine Biology of the Far East Branch of the Russian Academy of Sciences, Vladivostok, Russia, 690041
| | - Maria Maiorova
- National Scientific Center of Marine Biology of the Far East Branch of the Russian Academy of Sciences, Vladivostok, Russia, 690041
| | - Angelina Ivanova
- Saint-Petersburg State University, Saint-Petersburg, Russia, 199178
| | - Risto Väinölä
- Finnish Museum of Natural History, University of Helsinki, P. O. Box 17, 00014, Helsinki, Finland
| | - Petr Strelkov
- Saint-Petersburg State University, Saint-Petersburg, Russia, 199178
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10
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Simon A, Fraïsse C, El Ayari T, Liautard-Haag C, Strelkov P, Welch JJ, Bierne N. How do species barriers decay? Concordance and local introgression in mosaic hybrid zones of mussels. J Evol Biol 2020; 34:208-223. [PMID: 33045123 DOI: 10.1111/jeb.13709] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 08/20/2020] [Accepted: 09/16/2020] [Indexed: 12/19/2022]
Abstract
The Mytilus complex of marine mussel species forms a mosaic of hybrid zones, found across temperate regions of the globe. This allows us to study 'replicated' instances of secondary contact between closely related species. Previous work on this complex has shown that local introgression is both widespread and highly heterogeneous, and has identified SNPs that are outliers of differentiation between lineages. Here, we developed an ancestry-informative panel of such SNPs. We then compared their frequencies in newly sampled populations, including samples from within the hybrid zones, and parental populations at different distances from the contact. Results show that close to the hybrid zones, some outlier loci are near to fixation for the heterospecific allele, suggesting enhanced local introgression, or the local sweep of a shared ancestral allele. Conversely, genomic cline analyses, treating local parental populations as the reference, reveal a globally high concordance among loci, albeit with a few signals of asymmetric introgression. Enhanced local introgression at specific loci is consistent with the early transfer of adaptive variants after contact, possibly including asymmetric bi-stable variants (Dobzhansky-Muller incompatibilities), or haplotypes loaded with fewer deleterious mutations. Having escaped one barrier, however, these variants can be trapped or delayed at the next barrier, confining the introgression locally. These results shed light on the decay of species barriers during phases of contact.
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Affiliation(s)
- Alexis Simon
- ISEM, Univ Montpellier, CNRS, EPHE, IRD, Montpellier, France
| | - Christelle Fraïsse
- ISEM, Univ Montpellier, CNRS, EPHE, IRD, Montpellier, France.,Institute of Science and Technology Austria, Klosterneuburg, Austria, Austria
| | - Tahani El Ayari
- ISEM, Univ Montpellier, CNRS, EPHE, IRD, Montpellier, France
| | | | - Petr Strelkov
- St. Petersburg State University, St. Petersburg, Russia.,Laboratory of Monitoring and Conservation of Natural Arctic Ecosystems, Murmansk Arctic State University, Murmansk, Russia
| | - John J Welch
- Department of Genetics, University of Cambridge, Cambridge, UK
| | - Nicolas Bierne
- ISEM, Univ Montpellier, CNRS, EPHE, IRD, Montpellier, France
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11
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Simon A, Arbiol C, Nielsen EE, Couteau J, Sussarellu R, Burgeot T, Bernard I, Coolen JWP, Lamy J, Robert S, Skazina M, Strelkov P, Queiroga H, Cancio I, Welch JJ, Viard F, Bierne N. Replicated anthropogenic hybridisations reveal parallel patterns of admixture in marine mussels. Evol Appl 2020; 13:575-599. [PMID: 32431737 PMCID: PMC7045717 DOI: 10.1111/eva.12879] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 09/27/2019] [Accepted: 10/02/2019] [Indexed: 12/29/2022] Open
Abstract
Human-mediated transport creates secondary contacts between genetically differentiated lineages, bringing new opportunities for gene exchange. When similar introductions occur in different places, they provide informally replicated experiments for studying hybridisation. We here examined 4,279 Mytilus mussels, sampled in Europe and genotyped with 77 ancestry-informative markers. We identified a type of introduced mussels, called "dock mussels," associated with port habitats and displaying a particular genetic signal of admixture between M. edulis and the Mediterranean lineage of M. galloprovincialis. These mussels exhibit similarities in their ancestry compositions, regardless of the local native genetic backgrounds and the distance separating colonised ports. We observed fine-scale genetic shifts at the port entrance, at scales below natural dispersal distance. Such sharp clines do not fit with migration-selection tension zone models, and instead suggest habitat choice and early-stage adaptation to the port environment, possibly coupled with connectivity barriers. Variations in the spread and admixture patterns of dock mussels seem to be influenced by the local native genetic backgrounds encountered. We next examined departures from the average admixture rate at different loci, and compared human-mediated admixture events, to naturally admixed populations and experimental crosses. When the same M. galloprovincialis background was involved, positive correlations in the departures of loci across locations were found; but when different backgrounds were involved, no or negative correlations were observed. While some observed positive correlations might be best explained by a shared history and saltatory colonisation, others are likely produced by parallel selective events. Altogether, genome-wide effect of admixture seems repeatable and more dependent on genetic background than environmental context. Our results pave the way towards further genomic analyses of admixture, and monitoring of the spread of dock mussels both at large and at fine spacial scales.
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Affiliation(s)
- Alexis Simon
- ISEMUniv MontpellierCNRSEPHEIRDMontpellierFrance
| | | | - Einar Eg Nielsen
- Section for Marine Living ResourcesNational Institute of Aquatic ResourcesTechnical University of DenmarkSilkeborgDenmark
| | | | - Rossana Sussarellu
- Ifremer Unité Biogéochimie et ÉcotoxicologieCentre AtlantiqueNantesFrance
| | - Thierry Burgeot
- Ifremer Unité Biogéochimie et ÉcotoxicologieCentre AtlantiqueNantesFrance
| | | | - Joop W. P. Coolen
- Wageningen Marine ResearchDen HelderThe Netherlands
- Aquatic Ecology and Water Quality Management GroupWageningen UniversityWageningenThe Netherlands
| | - Jean‐Baptiste Lamy
- SG2M‐LGPMMLaboratoire de Génétique et Pathologie des Mollusques MarinsIfremerLa TrembladeFrance
| | - Stéphane Robert
- SG2M‐LGPMMLaboratoire de Génétique et Pathologie des Mollusques MarinsIfremerLa TrembladeFrance
| | - Maria Skazina
- St. Petersburg State UniversitySt. PetersburgRussia
- Laboratory of Monitoring and Conservation of Natural Arctic EcosystemsMurmansk Arctic State UniversityMurmanskRussia
| | - Petr Strelkov
- St. Petersburg State UniversitySt. PetersburgRussia
- Laboratory of Monitoring and Conservation of Natural Arctic EcosystemsMurmansk Arctic State UniversityMurmanskRussia
| | | | - Ibon Cancio
- CBET Research GroupDepartment of Zoology and Animal Cell BiologyFaculty Science and Technology and Research Centre for Experimental Marine Biology and Biotechnology (PiE‐UPV/EHU)University of the Basque Country (UPV/EHU)BilbaoSpain
| | - John J. Welch
- Department of GeneticsUniversity of CambridgeCambridgeUK
| | - Frédérique Viard
- Department AD2MUPMC Univ Paris 06CNRSUMR 7144Station BiologiqueSorbonne UniversitésRoscoffFrance
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12
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Charles M, Trancart S, Oden E, Houssin M. Experimental infection of Mytilus edulis by two Vibrio splendidus-related strains: Determination of pathogenicity level of strains and influence of the origin and annual cycle of mussels on their sensitivity. JOURNAL OF FISH DISEASES 2020; 43:9-21. [PMID: 31659783 DOI: 10.1111/jfd.13094] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 08/30/2019] [Accepted: 09/04/2019] [Indexed: 06/10/2023]
Abstract
This study aimed at assessing the pathogenicity of two Vibrio splendidus-related species and evaluating the influence of the origin and annual life cycle of mussels on their sensitivity during a bacterial challenge. Thus, in vivo infection assays were made with Vibrio crassostreae 7T4_12 and Vibrio splendidus 3G1_6, over, respectively, thirteen and 9 months, on adult blue mussels from five recruitment areas in France. Two bacterial concentrations were tested: one consistent with the loads of Vibrio spp. in environment and mussel tissues (~105 CFU/ml) and another one much higher (~108 CFU/ml). The tested environmental concentration has no pathogenic effect whatever the time of year, the strain used and the origin of mussels. However, at the highest concentration, a pathogenic effect was observed only at specific moments, and one of the origins appeared to be more resistant. The physiological state of mussels-depending on the time of year-seemed significant in mussels' sensitivity, as their recruitment origin. This study is the first to test the pathogenicity of V. splendidus-related strains at concentrations close to what is found in the wild, over the annual cycle of mussels, and considering their origin.
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Affiliation(s)
- Maud Charles
- UMR BOREA, CNRS-7208, IRD-207, MNHN, UPMC, UCN, Esplanade de la Paix, Normandie Université, Université de Caen Normandie, Caen, France
- LABÉO Frank Duncombe, Caen, France
| | | | | | - Maryline Houssin
- UMR BOREA, CNRS-7208, IRD-207, MNHN, UPMC, UCN, Esplanade de la Paix, Normandie Université, Université de Caen Normandie, Caen, France
- LABÉO Frank Duncombe, Caen, France
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13
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Yonemitsu MA, Giersch RM, Polo-Prieto M, Hammel M, Simon A, Cremonte F, Avilés FT, Merino-Véliz N, Burioli EAV, Muttray AF, Sherry J, Reinisch C, Baldwin SA, Goff SP, Houssin M, Arriagada G, Vázquez N, Bierne N, Metzger MJ. A single clonal lineage of transmissible cancer identified in two marine mussel species in South America and Europe. eLife 2019; 8:e47788. [PMID: 31686650 PMCID: PMC6831032 DOI: 10.7554/elife.47788] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 09/23/2019] [Indexed: 12/13/2022] Open
Abstract
Transmissible cancers, in which cancer cells themselves act as an infectious agent, have been identified in Tasmanian devils, dogs, and four bivalves. We investigated a disseminated neoplasia affecting geographically distant populations of two species of mussels (Mytilus chilensis in South America and M. edulis in Europe). Sequencing alleles from four loci (two nuclear and two mitochondrial) provided evidence of transmissible cancer in both species. Phylogenetic analysis of cancer-associated alleles and analysis of diagnostic SNPs showed that cancers in both species likely arose in a third species of mussel (M. trossulus), but these cancer cells are independent from the previously identified transmissible cancer in M. trossulus from Canada. Unexpectedly, cancers from M. chilensis and M. edulis are nearly identical, showing that the same cancer lineage affects both. Thus, a single transmissible cancer lineage has crossed into two new host species and has been transferred across the Atlantic and Pacific Oceans and between the Northern and Southern hemispheres.
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Affiliation(s)
| | | | | | - Maurine Hammel
- ISEM, Université de Montpellier, CNRS- EPHE-IRDMontpellierFrance
- IHPE, Université de Montpellier, CNRS-Ifremer-UPVDMontpellierFrance
| | - Alexis Simon
- ISEM, Université de Montpellier, CNRS- EPHE-IRDMontpellierFrance
| | - Florencia Cremonte
- Laboratorio de Parasitología (LAPA)Instituto de Biología de Organismos Marinos (IBIOMAR) (CCT CONICET - CENPAT)Puerto MadrynArgentina
| | - Fernando T Avilés
- Instituto de Ciencias Biomedicas, Facultad de Medicina y Facultad de Ciencias de la VidaUniversidad Andres BelloSantiagoChile
| | - Nicolás Merino-Véliz
- Instituto de Ciencias Biomedicas, Facultad de Medicina y Facultad de Ciencias de la VidaUniversidad Andres BelloSantiagoChile
| | | | | | - James Sherry
- Water Science & Technology DirectorateEnvironment and Climate Change CanadaBurlingtonCanada
| | - Carol Reinisch
- Water Science & Technology DirectorateEnvironment and Climate Change CanadaBurlingtonCanada
| | - Susan A Baldwin
- Chemical and Biological EngineeringUniversity of British ColumbiaVancouverCanada
| | - Stephen P Goff
- Howard Hughes Medical InstituteChevy ChaseUnited States
- Department of Microbiology and ImmunologyColumbia University Medical CenterNew YorkUnited States
- Department of Biochemistry and Molecular BiophysicsColumbia University Medical CenterNew YorkUnited States
| | - Maryline Houssin
- Research and DevelopmentLABÉO Frank DuncombeSaint-ContestFrance
- FRE BOREA, MNHN, UPMC, UCN, CNRS-7208, IRD-207, Université de Caen NormandieCaenFrance
| | - Gloria Arriagada
- Instituto de Ciencias Biomedicas, Facultad de Medicina y Facultad de Ciencias de la VidaUniversidad Andres BelloSantiagoChile
| | - Nuria Vázquez
- Laboratorio de Parasitología (LAPA)Instituto de Biología de Organismos Marinos (IBIOMAR) (CCT CONICET - CENPAT)Puerto MadrynArgentina
| | - Nicolas Bierne
- ISEM, Université de Montpellier, CNRS- EPHE-IRDMontpellierFrance
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14
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Burioli EAV, Trancart S, Simon A, Bernard I, Charles M, Oden E, Bierne N, Houssin M. Implementation of various approaches to study the prevalence, incidence and progression of disseminated neoplasia in mussel stocks. J Invertebr Pathol 2019; 168:107271. [PMID: 31629707 DOI: 10.1016/j.jip.2019.107271] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 10/12/2019] [Accepted: 10/15/2019] [Indexed: 01/11/2023]
Abstract
Marine mussel production is of substantial economic interest in numerous coastal areas worldwide, making crucial the study of pathologies that affect them. Disseminated neoplasia (DN) has recently been suggested to be linked to blue mussel, Mytilus edulis, mortality outbreaks observed in France since 2014, although the evidence remains indirect. In order to improve DN detection and monitoring, we compared the sensitivity of four diagnostic tools, namely haemocytology, histology, flow cytometry, and genetics. Haemocytological examination gave the best results in sensitivity and had the advantage of being non-invasive, allowing disease progression to be followed in affected mussels. Using this approach, we showed that DN progression is usually slow, and we provide evidence of remission events. We observed a high diversity of forms and mitotic features of neoplastic cells located in the vesicular connective tissue but rarely in the haemolymph. Circulating cells occur as four main types but are homogenous in morphology and DNA content within a single individual. Polyploidy proved very high, from 8 N to 18 N. Genetic analysis of haemolymph DNA showed that a Mytilus trossulus genetic signal was associated with almost all the DN cases here diagnosed by haemocytological examination, regardless of the DN type. This result corroborates DN is a transmissible cancer that first originated in a M. trossulus host and subsequently crossed into M. edulis. No pre-neoplastic conditions were detectable. The prevalence of the disease was quite low, which, together with the low morbidity observed in the lab, suggest DN is unlikely to be the direct cause of mortality outbreaks in France.
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Affiliation(s)
| | - S Trancart
- LABÉO, 1 Route de Rosel, 14280 St Contest, France
| | - A Simon
- ISEM, Univ Montpellier, CNRS-EPHE-IRD, Montpellier, France
| | - I Bernard
- Eurêka Modélisation, 13 rue de Kermarquer, Lézardrieux, France
| | - M Charles
- LABÉO, 1 Route de Rosel, 14280 St Contest, France; Université de Caen Normandie, UMR BOREA, MNHN, UPMC, UCBN, CNRS-7208, IRD-207, Esplanade de la Paix, 14000 Caen, France
| | - E Oden
- LABÉO, 1 Route de Rosel, 14280 St Contest, France
| | - N Bierne
- ISEM, Univ Montpellier, CNRS-EPHE-IRD, Montpellier, France
| | - M Houssin
- LABÉO, 1 Route de Rosel, 14280 St Contest, France; Université de Caen Normandie, UMR BOREA, MNHN, UPMC, UCBN, CNRS-7208, IRD-207, Esplanade de la Paix, 14000 Caen, France
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15
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Fujii Y, Gerdol M, Hasan I, Koide Y, Matsuzaki R, Ikeda M, Rajia S, Ogawa Y, Kawsar SMA, Ozeki Y. Phylogeny and Properties of a Novel Lectin Family with β-Trefoil Folding in Mussels. TRENDS GLYCOSCI GLYC 2018. [DOI: 10.4052/tigg.1717.1e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Yuki Fujii
- Department of Pharmaceutical Sciences, Nagasaki International University
| | - Marco Gerdol
- Department of Life Sciences, University of Trieste
| | - Imtiaj Hasan
- Department of Life and Environmental System Science, Yokohama City University
- Department of Biochemistry and Molecular Biology, University of Rajshahi
| | - Yasuhiro Koide
- Department of Life and Environmental System Science, Yokohama City University
| | - Risa Matsuzaki
- Department of Life and Environmental System Science, Yokohama City University
| | - Mayu Ikeda
- Department of Life and Environmental System Science, Yokohama City University
| | - Sultana Rajia
- Department of Life and Environmental System Science, Yokohama City University
- Department of Pharmacy, Faculty of Pharmacy, Varendra University
| | - Yukiko Ogawa
- Department of Pharmaceutical Sciences, Nagasaki International University
| | - S. M. Abe Kawsar
- Department of Life and Environmental System Science, Yokohama City University
- Department of Chemistry, Faculty of Science, University of Chittagong
| | - Yasuhiro Ozeki
- Department of Life and Environmental System Science, Yokohama City University
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16
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Ní Leathlobhair M, Gulland FMD, Murchison EP. No evidence for clonal transmission of urogenital carcinoma in California sea lions ( Zalophus californianus). Wellcome Open Res 2017; 2:46. [PMID: 28948233 PMCID: PMC5527528 DOI: 10.12688/wellcomeopenres.11483.1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/01/2017] [Indexed: 12/03/2022] Open
Abstract
Urogenital carcinoma is a highly metastatic cancer affecting California sea lions (
Zalophus californianus). The disease has high prevalence amongst stranded animals, and is one of the most commonly observed cancers in wildlife. The genital localisation of primary tumours suggests the possibility that coital transmission of an infectious agent could underlie this disease. Otarine herpesvirus type 1 has been associated with lesions, however a causative role for this virus has not been confirmed. We investigated the possibility that urogenital carcinoma might be clonally transmissible, spread by the direct transfer of cancer cells. Analysis of sequences at the mitochondrial DNA control region in seven matched tumour and host pairs confirmed that tumour genotypes were identical to those of their matched hosts and did not show similarity with tumours from other individuals. Thus our findings suggest that urogenital carcinoma in California sea lions is not clonally transmitted, but rather arises from transformed host cells.
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Affiliation(s)
- Máire Ní Leathlobhair
- Transmissible Cancer Group, Department of Veterinary Medicine, University of Cambridge, Cambridge, CB3 0ES, UK
| | | | - Elizabeth P Murchison
- Transmissible Cancer Group, Department of Veterinary Medicine, University of Cambridge, Cambridge, CB3 0ES, UK
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17
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Patterns of cross-contamination in a multispecies population genomic project: detection, quantification, impact, and solutions. BMC Biol 2017; 15:25. [PMID: 28356154 PMCID: PMC5370491 DOI: 10.1186/s12915-017-0366-6] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 03/13/2017] [Indexed: 01/06/2023] Open
Abstract
Background Contamination is a well-known but often neglected problem in molecular biology. Here, we investigated the prevalence of cross-contamination among 446 samples from 116 distinct species of animals, which were processed in the same laboratory and subjected to subcontracted transcriptome sequencing. Results Using cytochrome oxidase 1 as a barcode, we identified a minimum of 782 events of between-species contamination, with approximately 80% of our samples being affected. An analysis of laboratory metadata revealed a strong effect of the sequencing center: nearly all the detected events of between-species contamination involved species that were sent the same day to the same company. We introduce new methods to address the amount of within-species, between-individual contamination, and to correct for this problem when calling genotypes from base read counts. Conclusions We report evidence for pervasive within-species contamination in this data set, and show that classical population genomic statistics, such as synonymous diversity, the ratio of non-synonymous to synonymous diversity, inbreeding coefficient FIT, and Tajima’s D, are sensitive to this problem to various extents. Control analyses suggest that our published results are probably robust to the problem of contamination. Recommendations on how to prevent or avoid contamination in large-scale population genomics/molecular ecology are provided based on this analysis. Electronic supplementary material The online version of this article (doi:10.1186/s12915-017-0366-6) contains supplementary material, which is available to authorized users.
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