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Kwon J, Youk S, Lee DH. Role of wild birds in the spread of clade 2.3.4.4e H5N6 highly pathogenic avian influenza virus into South Korea and Japan. INFECTION, GENETICS AND EVOLUTION : JOURNAL OF MOLECULAR EPIDEMIOLOGY AND EVOLUTIONARY GENETICS IN INFECTIOUS DISEASES 2022; 101:105281. [PMID: 35395408 DOI: 10.1016/j.meegid.2022.105281] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 03/26/2022] [Accepted: 04/01/2022] [Indexed: 06/14/2023]
Abstract
H5Nx highly pathogenic avian influenza viruses (HPAIVs) have caused transboundary epizootics in poultry and wild birds. In 2016, the H5N6 subtype of clade 2.3.4.4e HPAIVs caused multiple outbreaks in Asia, including China, Japan, Korea, and Vietnam. However, the geographical spread pattern of 2.3.4.4e H5N6 HPAIV has not been clearly identified. To better understand the emergence and transmission history of 2.3.4.4e H5N6 HPAIV, we investigated the underlying epidemiologic processes associated with this viral spread by performing a Bayesian phylogeography analysis. The results revealed that wild waterfowl played a central role in the transboundary spread of clade 2.3.4.4e H5N6 HPAIV into both endemic and non-endemic countries, causing multiple incursions of the 2.3.4.4e H5N6 HPAIV into South Korea, Japan, and Vietnam. In our analysis, Guangdong province, China was estimated to be the most probable site where 2.3.4.4e H5N6 HPAIVs emerged prior to the transboundary transmissions. Continued genomic surveillance in both wild birds and poultry would be necessary for monitoring of HPAIV incursions. In addition, enhanced biosecurity would be key to preventing the HPAIV spread by minimizing contact between domestic poultry and wild birds.
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Affiliation(s)
- Junghoon Kwon
- College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Sungsu Youk
- Exotic and Emerging Avian Viral Diseases Research Unit, Southeast Poultry Research Laboratory, U.S. National Poultry Research Center, Agricultural Research Service, U.S. Department of Agriculture, Athens, GA, USA
| | - Dong-Hun Lee
- College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea.
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Guo X, He XX, Chen H, Wang ZC, Li HF, Wang JX, Wang MS, Jiang RS. Revisiting the evolutionary history of domestic and wild ducks based on genomic analyses. Zool Res 2021; 42:43-50. [PMID: 33269825 PMCID: PMC7840458 DOI: 10.24272/j.issn.2095-8137.2020.133] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Although domestic ducks have been important poultry species throughout human history, their origin remains enigmatic, with mallards and/or Chinese spot-billed ducks being proposed as the direct wild ancestor(s) of domestic ducks. Here, we analyzed 118 whole genomes from mallard, Chinese spot-billed, and domestic ducks to reconstruct their evolutionary history. We found pervasive introgression patterns among these duck populations. Furthermore, we showed that domestic ducks separated from mallard and Chinese spot-billed ducks nearly 38 thousand years ago (kya) and 54 kya, respectively, which is considerably outside the time period of presumed duck domestication. Thus, our results suggest that domestic ducks may have originated from another wild duck population that is currently undefined or unsampled, rather than from present-day mallard and/or Chinese spot-billed ducks, as previously thought. Overall, this study provides new insight into the complex evolution of ducks.
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Affiliation(s)
- Xing Guo
- Anhui Province Key Laboratory of Local Livestock and Poultry Genetic Resource Conservation and Bio-breeding, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Xin-Xin He
- Anhui Province Key Laboratory of Local Livestock and Poultry Genetic Resource Conservation and Bio-breeding, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Hong Chen
- Anhui Province Key Laboratory of Local Livestock and Poultry Genetic Resource Conservation and Bio-breeding, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Zhi-Cheng Wang
- Anhui Province Key Laboratory of Local Livestock and Poultry Genetic Resource Conservation and Bio-breeding, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Hui-Fang Li
- Jiangsu Institute of Poultry Science, Chinese Academy of Agriculture Science, Yangzhou, Jiangsu 225125, China
| | - Jiang-Xian Wang
- Anhui Province Key Laboratory of Local Livestock and Poultry Genetic Resource Conservation and Bio-breeding, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Ming-Shan Wang
- Howard Hughes Medical Institute, University of California Santa Cruz, Santa Cruz, CA 95064, USA.,Department of Ecology and Evolutionary Biology, University of California Santa Cruz, CA 95064, USA. E-mail:
| | - Run-Shen Jiang
- Anhui Province Key Laboratory of Local Livestock and Poultry Genetic Resource Conservation and Bio-breeding, Anhui Agricultural University, Hefei, Anhui 230036, China. E-mail:
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Koethe S, Ulrich L, Ulrich R, Amler S, Graaf A, Harder TC, Grund C, Mettenleiter TC, Conraths FJ, Beer M, Globig A. Modulation of lethal HPAIV H5N8 clade 2.3.4.4B infection in AIV pre-exposed mallards. Emerg Microbes Infect 2020; 9:180-193. [PMID: 31969057 PMCID: PMC7006783 DOI: 10.1080/22221751.2020.1713706] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In 2016/2017, a severe epidemic of HPAIV H5N8 clade 2.3.4.4 group B (H5N8B) affected Europe. To analyse the role of mallards in the spatiotemporal dynamics of global HPAIV H5N8B dispersal, mallards (Anas platyrhynchos), naturally exposed to various AIV and therefore seropositive, were challenged with H5N8B. All experiments were controlled by infection and co-housing of seronegative juvenile Pekin ducklings. All ducks that survived the first infection were re-challenged 21 dpi with the homologous H5N8B strain. After the first H5N8B infection, seropositive mallards showed only mild clinical symptoms. Moderate to low viral shedding, occurring particularly from the oropharynx and lasting for 7 days maximum, led to severe clinical disease of all contact ducklings. All challenged seronegative Pekin ducks and contact ducklings died or had to be euthanized. H5-specific antibodies were detected in surviving birds within 2 weeks. Virus and viral RNA could be isolated from several water samples until 6 and 9 dpi, respectively. Conversely, upon re-infection with homologous H5N8B neither inoculated nor contact ducklings showed any clinical symptoms, nor was an antibody titer increase of seropositive mallards or any seroconversion of contact ducklings observed. Mallard ducks naturally pre-exposed to LPAIV can play a role as a clinically unsuspicious virus reservoir for H5N8B effective in virus transmission. Mallards with homologous immunity did not contribute to virus transmission.
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Affiliation(s)
| | | | - Reiner Ulrich
- Institute of Veterinary-Pathology, Leipzig University, Leipzig, Germany
| | | | - Annika Graaf
- Friedrich-Loeffler-Institut, Greifswald, Germany
| | | | | | | | | | - Martin Beer
- Friedrich-Loeffler-Institut, Greifswald, Germany
| | - Anja Globig
- Friedrich-Loeffler-Institut, Greifswald, Germany
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Lavretsky P, McInerney NR, Mohl JE, Brown JI, James HF, McCracken KG, Fleischer RC. Assessing changes in genomic divergence following a century of human-mediated secondary contact among wild and captive-bred ducks. Mol Ecol 2020; 29:578-595. [PMID: 31872482 DOI: 10.1111/mec.15343] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 12/09/2019] [Accepted: 12/16/2019] [Indexed: 12/21/2022]
Abstract
Along with manipulating habitat, the direct release of domesticated individuals into the wild is a practice used worldwide to augment wildlife populations. We test between possible outcomes of human-mediated secondary contact using genomic techniques at both historical and contemporary timescales for two iconic duck species. First, we sequence several thousand ddRAD-seq loci for contemporary mallards (Anas platyrhynchos) throughout North America and two domestic mallard types (i.e., known game-farm mallards and feral Khaki Campbell's). We show that North American mallards may well be becoming a hybrid swarm due to interbreeding with domesticated game-farm mallards released for hunting. Next, to attain a historical perspective, we applied a bait-capture array targeting thousands of loci in century-old (1842-1915) and contemporary (2009-2010) mallard and American black duck (Anas rubripes) specimens. We conclude that American black ducks and mallards have always been closely related, with a divergence time of ~600,000 years before present, and likely evolved through prolonged isolation followed by limited bouts of gene flow (i.e., secondary contact). They continue to maintain genetic separation, a finding that overturns decades of prior research and speculation suggesting the genetic extinction of the American black duck due to contemporary interbreeding with mallards. Thus, despite having high rates of hybridization, actual gene flow is limited between mallards and American black ducks. Conversely, our historical and contemporary data confirm that the intensive stocking of game-farm mallards during the last ~100 years has fundamentally changed the genetic integrity of North America's wild mallard population, especially in the east. It thus becomes of great interest to ask whether the iconic North American mallard is declining in the wild due to introgression of maladaptive traits from domesticated forms. Moreover, we hypothesize that differential gene flow from domestic game-farm mallards into the wild mallard population may explain the overall temporal increase in differentiation between wild black ducks and mallards, as well as the uncoupling of genetic diversity and effective population size estimates across time in our results. Finally, our findings highlight how genomic methods can recover complex population histories by capturing DNA preserved in traditional museum specimens.
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Affiliation(s)
- Philip Lavretsky
- Department of Biological Sciences, The University of Texas at El Paso, El Paso, TX, USA
| | - Nancy Rotzel McInerney
- Center for Conservation Genomics, Smithsonian Conservation Biology Institute, Smithsonian Institution, Washington, DC, USA
| | - Jonathon E Mohl
- Border Biomedical Research Center, The University of Texas at El Paso, El Paso, TX, USA
| | - Joshua I Brown
- Department of Biological Sciences, The University of Texas at El Paso, El Paso, TX, USA
| | - Helen F James
- Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, DC, USA
| | - Kevin G McCracken
- Department of Biology, University of Miami, Coral Gables, FL, USA.,Department of Marine Biology and Ecology, Rosenstiel School of Marine and Atmospheric Sciences, University of Miami, Miami, FL, USA.,Human Genetics and Genomics, Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, USA.,Institute of Arctic Biology, University of Alaska Museum, University of Alaska Fairbanks, Fairbanks, AK, USA
| | - Robert C Fleischer
- Center for Conservation Genomics, Smithsonian Conservation Biology Institute, Smithsonian Institution, Washington, DC, USA
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Sullivan JD, Takekawa JY, Spragens KA, Newman SH, Xiao X, Leader PJ, Smith B, Prosser DJ. Waterfowl Spring Migratory Behavior and Avian Influenza Transmission Risk in the Changing Landscape of the East Asian-Australasian Flyway. Front Ecol Evol 2018. [DOI: 10.3389/fevo.2018.00206] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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Dietrich D, Dekova R, Davy S, Fahrni G, Geissbühler A. Applications of Space Technologies to Global Health: Scoping Review. J Med Internet Res 2018; 20:e230. [PMID: 29950289 PMCID: PMC6041558 DOI: 10.2196/jmir.9458] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 03/21/2018] [Accepted: 04/22/2018] [Indexed: 12/27/2022] Open
Abstract
Background Space technology has an impact on many domains of activity on earth, including in the field of global health. With the recent adoption of the United Nations’ Sustainable Development Goals that highlight the need for strengthening partnerships in different domains, it is useful to better characterize the relationship between space technology and global health. Objective The aim of this study was to identify the applications of space technologies to global health, the key stakeholders in the field, as well as gaps and challenges. Methods We used a scoping review methodology, including a literature review and the involvement of stakeholders, via a brief self-administered, open-response questionnaire. A distinct search on several search engines was conducted for each of the four key technological domains that were previously identified by the UN Office for Outer Space Affairs’ Expert Group on Space and Global Health (Domain A: remote sensing; Domain B: global navigation satellite systems; Domain C: satellite communication; and Domain D: human space flight). Themes in which space technologies are of benefit to global health were extracted. Key stakeholders, as well as gaps, challenges, and perspectives were identified. Results A total of 222 sources were included for Domain A, 82 sources for Domain B, 144 sources for Domain C, and 31 sources for Domain D. A total of 3 questionnaires out of 16 sent were answered. Global navigation satellite systems and geographic information systems are used for the study and forecasting of communicable and noncommunicable diseases; satellite communication and global navigation satellite systems for disaster response; satellite communication for telemedicine and tele-education; and global navigation satellite systems for autonomy improvement, access to health care, as well as for safe and efficient transportation. Various health research and technologies developed for inhabited space flights have been adapted for terrestrial use. Conclusions Although numerous examples of space technology applications to global health exist, improved awareness, training, and collaboration of the research community is needed.
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Affiliation(s)
- Damien Dietrich
- Hopitaux Universitaires de Genève, eHealth and Telemedicine Division, Geneva, Switzerland
| | - Ralitza Dekova
- Hopitaux Universitaires de Genève, eHealth and Telemedicine Division, Geneva, Switzerland
| | - Stephan Davy
- Hopitaux Universitaires de Genève, eHealth and Telemedicine Division, Geneva, Switzerland
| | - Guillaume Fahrni
- Hopitaux Universitaires de Genève, eHealth and Telemedicine Division, Geneva, Switzerland
| | - Antoine Geissbühler
- Hopitaux Universitaires de Genève, eHealth and Telemedicine Division, Geneva, Switzerland
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