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Zhong J, Medvecky M, Tornos J, Clessin A, Le Net R, Gantelet H, Gamble A, Forde TL, Boulinier T. Erysipelothrix amsterdamensis sp. nov., associated with mortalities among endangered seabirds. Int J Syst Evol Microbiol 2024; 74. [PMID: 38359084 DOI: 10.1099/ijsem.0.006264] [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] [Indexed: 02/17/2024] Open
Abstract
Infectious diseases threaten endangered species, particularly in small isolated populations. Seabird populations on the remote Amsterdam Island in the Indian Ocean have been in decline for the past three decades, with avian cholera caused by Pasteurella multocida proposed as the primary driver. However, Erysipelothrix species have also been sporadically detected from albatrosses on Amsterdam Island and may be contributing to some of the observed mortality. In this study, we genomically characterized 16 Erysipelothrix species isolates obtained from three Indian yellow-nosed albatross (Thalassarche carteri) chick carcasses in 2019. Histological analyses suggest that they died of bacterial septicaemia. Two isolates were sequenced using both Illumina short-read and MinION long-read approaches, which - following hybrid assembly - resulted in closed circular genomes. Mapping of Illumina reads from the remaining isolates to one of these new reference genomes revealed that all 16 isolates were closely related, with a maximum of 13 nucleotide differences distinguishing any pair of isolates. The nucleotide diversity of isolates obtained from the same or different carcasses was similar, suggesting all three chicks were likely infected from a common source. These genomes were compared with a global collection of genomes from Erysipelothrix rhusiopathiae and other species from the same genus. The isolates from albatrosses were phylogenetically distinct, sharing a most recent common ancestor with E. rhusiopathiae. Based on phylogenomic analysis and standard thresholds for average nucleotide identity and digital DNA-DNA hybridization, these isolates represent a novel Erysipelothrix species, for which we propose the name Erysipelothrix amsterdamensis sp. nov. The type strain is A18Y020dT (=CIP 112216T=DSM 115297T). The implications of this bacterium for albatross conservation will require further study.
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Affiliation(s)
- Jiadong Zhong
- School of Biodiversity, One Health & Veterinary Medicine, University of Glasgow, Glasgow, G12 8QQ, UK
- School of Life Sciences, Westlake University, Hangzhou, Zhejiang, PR China
| | - Matej Medvecky
- School of Biodiversity, One Health & Veterinary Medicine, University of Glasgow, Glasgow, G12 8QQ, UK
- Bioinformatics Research Technology Platform, University of Warwick, Coventry, CV4 7AL, UK
| | - Jérémy Tornos
- CEFE, UMR 5175, Univ Montpellier, CNRS, EPHE, IRD, Montpellier, France
- Ceva Biovac, Beaucouzé, France
| | - Augustin Clessin
- CEFE, UMR 5175, Univ Montpellier, CNRS, EPHE, IRD, Montpellier, France
- École Normale Supérieure de Lyon, 69342 Lyon Cedex 07, France
| | - Rozenn Le Net
- Vet Diagnostics, 69260 Charbonnières-les-Bains, France
| | | | - Amandine Gamble
- School of Biodiversity, One Health & Veterinary Medicine, University of Glasgow, Glasgow, G12 8QQ, UK
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, USA
- Department of Public and Ecosystem Health, Cornell University, Ithaca, New York, USA
| | - Taya L Forde
- School of Biodiversity, One Health & Veterinary Medicine, University of Glasgow, Glasgow, G12 8QQ, UK
| | - Thierry Boulinier
- CEFE, UMR 5175, Univ Montpellier, CNRS, EPHE, IRD, Montpellier, France
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2
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Coelho J, Pacheco H, Rafael M, Jiménez-Ruiz S, Alves PC, Santos N. Dynamics of Humoral Immunity to Myxoma and Rabbit Hemorrhagic Disease Viruses in Wild European Rabbits Assessed by Longitudinal Semiquantitative Serology. Microbiol Spectr 2023; 11:e0005023. [PMID: 37314328 PMCID: PMC10434053 DOI: 10.1128/spectrum.00050-23] [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: 01/05/2023] [Accepted: 05/19/2023] [Indexed: 06/15/2023] Open
Abstract
Myxoma virus (MYXV) and rabbit hemorrhagic disease virus (RHDV) are important drivers of the population decline of the European rabbit, an endangered keystone species. Both viruses elicit strong immune responses, but the long-term dynamics of humoral immunity are imperfectly known. This study aimed to assess the determinants of the long-term dynamics of antibodies to each virus based on a longitudinal capture-mark-recapture of wild European rabbits and semiquantitative serological data of MYXV and RHDV GI.2-specific IgG. The study included 611 indirect enzyme-linked immunosorbent assay (iELISA) normalized absorbance ratios for each MYXV and RHDV GI.2 from 505 rabbits from 2018 to 2022. Normalized absorbance ratios were analyzed using log-linear mixed models, showing a significant positive relationship with the time since the first capture of individual rabbits, with monthly increases of 4.1% for antibodies against MYXV and 2.0% against RHDV GI.2. Individual serological histories showed fluctuations over time, suggesting that reinfections boosted the immune response and likely resulted in lifelong immunity. Normalized absorbance ratios significantly increased with the seroprevalence in the population, probably because of recent outbreaks, and with body weight, highlighting the role of MYXV and RHDV GI.2 in determining survival to adulthood. Juvenile rabbits seropositive for both viruses were found, and the dynamics of RHDV GI.2 normalized absorbance ratios suggest the presence of maternal immunity up to 2 months of age. Semiquantitative longitudinal serological data provide epidemiological information, otherwise lost when considering only qualitative data, and support a lifelong acquired humoral immunity to RHDV GI.2 and MYXV upon natural infection. IMPORTANCE This study addresses the long-term dynamics of humoral immunity to two major viral pathogens of the European rabbit, an endangered keystone species of major ecological relevance. Such studies are particularly challenging in free-ranging species, and a combination of longitudinal capture-mark-recapture and semiquantitative serology was used to address this question. Over 600 normalized absorbance ratios of iELISA, obtained from 505 individual rabbits in 7 populations over 5 years, were analyzed using linear mixed models. The results support a lifelong acquired humoral immunity to myxoma virus and rabbit hemorrhagic disease virus upon natural infection and suggest the presence of maternal immunity to the latter in wild juvenile rabbits. These results contribute to understanding the epidemiology of two viral diseases threatening this keystone species and assist in developing conservation programs.
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Affiliation(s)
- Joana Coelho
- CIISA—Centro de Investigação Interdisciplinar em Sanidade Animal, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Universidade do Porto, Vairão, Portugal
| | - Henrique Pacheco
- CIISA—Centro de Investigação Interdisciplinar em Sanidade Animal, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Universidade do Porto, Vairão, Portugal
| | - Marta Rafael
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Universidade do Porto, Vairão, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Vairão, Portugal
- SABIO-IREC, Research Group in Health and Biotechnology, Institute for Game and Wildlife Research, University of Castilla-La Mancha, Castilla-La Mancha, Spain
| | - Saúl Jiménez-Ruiz
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Universidade do Porto, Vairão, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Vairão, Portugal
- SABIO-IREC, Research Group in Health and Biotechnology, Institute for Game and Wildlife Research, University of Castilla-La Mancha, Castilla-La Mancha, Spain
- GISAZ-ENZOEM, Animal Health and Zoonoses Research Group, Competitive Research Unit on Zoonoses and Emerging Diseases, University of Cordoba, Cordoba, Spain
| | - Paulo Célio Alves
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Universidade do Porto, Vairão, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Vairão, Portugal
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
- Estação Biológica de Mértola (EBM), CIBIO, Mértola, Portugal
| | - Nuno Santos
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Universidade do Porto, Vairão, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Vairão, Portugal
- Estação Biológica de Mértola (EBM), CIBIO, Mértola, Portugal
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3
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Ayala AJ, Ogbunugafor CB. When Vibrios Take Flight: A Meta-Analysis of Pathogenic Vibrio Species in Wild and Domestic Birds. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1404:295-336. [PMID: 36792882 DOI: 10.1007/978-3-031-22997-8_15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Of the over 100 species in the genus Vibrio, approximately twelve are associated with clinical disease, such as cholera and vibriosis. Crucially, eleven of those twelve, including Vibrio cholerae and Vibrio vulnificus, have been isolated from birds. Since 1965, pathogenic Vibrio species have been consistently isolated from aquatic and ground-foraging bird species, which has implications for public health, as well as the One Health paradigm defined as an ecology-inspired, integrative framework for the study of health and disease, inclusive of environmental, human, and animal health. In this meta-analysis, we identified 76 studies from the primary literature which report on or examine birds as hosts for pathogenic Vibrio species. We found that the burden of disease in birds was most commonly associated with V. cholerae, followed by V. metschnikovii and V. parahaemolyticus. Meta-analysis wide prevalence of our Vibrio pathogens varied from 19% for V. parahaemolyticus to 1% for V. mimicus. Wild and domestic birds were both affected, which may have implications for conservation, as well as agriculturally associated avian species. As pathogenic Vibrios become more abundant throughout the world as a result of warming estuaries and oceans, susceptible avian species should be continually monitored as potential reservoirs for these pathogens.
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Affiliation(s)
- Andrea J Ayala
- Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT, USA
| | - C Brandon Ogbunugafor
- Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT, USA.
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van Dijk JGB, Iverson SA, Gilchrist HG, Harms NJ, Hennin HL, Love OP, Buttler EI, Lesceu S, Foster JT, Forbes MR, Soos C. Herd immunity drives the epidemic fadeout of avian cholera in Arctic-nesting seabirds. Sci Rep 2021; 11:1046. [PMID: 33441657 PMCID: PMC7806777 DOI: 10.1038/s41598-020-79888-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 12/14/2020] [Indexed: 11/09/2022] Open
Abstract
Avian cholera, caused by the bacterium Pasteurella multocida, is a common and important infectious disease of wild birds in North America. Between 2005 and 2012, avian cholera caused annual mortality of widely varying magnitudes in Northern common eiders (Somateria mollissima borealis) breeding at the largest colony in the Canadian Arctic, Mitivik Island, Nunavut. Although herd immunity, in which a large proportion of the population acquires immunity to the disease, has been suggested to play a role in epidemic fadeout, immunological studies exploring this hypothesis have been missing. We investigated the role of three potential drivers of fadeout of avian cholera in eiders, including immunity, prevalence of infection, and colony size. Each potential driver was examined in relation to the annual real-time reproductive number (Rt) of P. multocida, previously calculated for eiders at Mitivik Island. Each year, colony size was estimated and eiders were closely monitored, and evaluated for infection and serological status. We demonstrate that acquired immunity approximated using antibody titers to P. multocida in both sexes was likely a key driver for the epidemic fadeout. This study exemplifies the importance of herd immunity in influencing the dynamics and fadeout of epidemics in a wildlife population.
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Affiliation(s)
- Jacintha G B van Dijk
- Department of Biology, Carleton University, Ottawa, ON, K1S 5B6, Canada.,Centre for Ecology and Evolution in Microbial Model Systems, Linnaeus University, 391 82, Kalmar, Sweden
| | - Samuel A Iverson
- Department of Biology, Carleton University, Ottawa, ON, K1S 5B6, Canada.,Environment and Climate Change Canada, Canadian Wildlife Service, Gatineau, QC, K1A 0H3, Canada
| | - H Grant Gilchrist
- Department of Biology, Carleton University, Ottawa, ON, K1S 5B6, Canada.,Environment and Climate Change Canada, National Wildlife Research Center, Ottawa, ON, K1S 5B6, Canada
| | - N Jane Harms
- Department of Veterinary Pathology, University of Saskatchewan, Saskatoon, SK, S7N 5B4, Canada.,Environment Yukon, Animal Health Unit, Whitehorse, YT, Y1A 4Y9, Canada
| | - Holly L Hennin
- Environment and Climate Change Canada, National Wildlife Research Center, Ottawa, ON, K1S 5B6, Canada.,Department of Integrative Biology, University of Windsor, Windsor, ON, N9B 3P4, Canada
| | - Oliver P Love
- Department of Integrative Biology, University of Windsor, Windsor, ON, N9B 3P4, Canada
| | - E Isabel Buttler
- Department of Biology, Carleton University, Ottawa, ON, K1S 5B6, Canada
| | | | - Jeffrey T Foster
- Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, AZ, 86011, USA
| | - Mark R Forbes
- Department of Biology, Carleton University, Ottawa, ON, K1S 5B6, Canada
| | - Catherine Soos
- Department of Veterinary Pathology, University of Saskatchewan, Saskatoon, SK, S7N 5B4, Canada. .,Ecotoxicology and Wildlife Health Division, Environment and Climate Change Canada, Saskatoon, SK, S7N 0X4, Canada.
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5
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Spatial and temporal aggregation of albatross chick mortality events in the Falklands suggests a role for an unidentified infectious disease. Polar Biol 2021. [DOI: 10.1007/s00300-020-02797-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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6
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Bestley S, Ropert-Coudert Y, Bengtson Nash S, Brooks CM, Cotté C, Dewar M, Friedlaender AS, Jackson JA, Labrousse S, Lowther AD, McMahon CR, Phillips RA, Pistorius P, Puskic PS, Reis AODA, Reisinger RR, Santos M, Tarszisz E, Tixier P, Trathan PN, Wege M, Wienecke B. Marine Ecosystem Assessment for the Southern Ocean: Birds and Marine Mammals in a Changing Climate. Front Ecol Evol 2020. [DOI: 10.3389/fevo.2020.566936] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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7
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8
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Jaeger A, Gamble A, Lagadec E, Lebarbenchon C, Bourret V, Tornos J, Barbraud C, Lemberger K, Delord K, Weimerskirch H, Thiebot JB, Boulinier T, Tortosa P. Impact of Annual Bacterial Epizootics on Albatross Population on a Remote Island. ECOHEALTH 2020; 17:194-202. [PMID: 32705577 DOI: 10.1007/s10393-020-01487-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Revised: 02/19/2020] [Accepted: 04/21/2020] [Indexed: 06/11/2023]
Abstract
The reduced species richness typical of oceanic islands provides an interesting environmental setup to examine in natura the epidemiological dynamics of infectious agents with potential implications for public health and/or conservation. On Amsterdam Island (Indian Ocean), recurrent die-offs of Indian yellow-nosed albatross (Thalassarche carteri) nestlings have been attributed to avian cholera, caused by the bacterium Pasteurella multocida. In order to help implementing efficient measures for the control of this disease, it is critical to better understand the local epidemiology of P. multocida and to examine its inter- and intra-annual infection dynamics. We evaluated the infection status of 264 yellow-nosed albatrosses over four successive breeding seasons using a real-time PCR targeting P. multocida DNA from cloacal swabs. Infection prevalence patterns revealed an intense circulation of P. multocida throughout the survey, with a steady but variable increase in infection prevalence within each breeding season. These epizootics were associated with massive nestling dies-offs, inducing very low fledging successes (≤ 20%). These results suggest important variations in the transmission dynamics of this pathogen. These findings and the developed PCR protocol have direct applications to guide future research and refine conservation plans aiming at controlling the disease.
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Affiliation(s)
- Audrey Jaeger
- UMR PIMIT (Processus Infectieux en Milieu Insulaire Tropical), CNRS 9192, INSERM 1187, IRD 249, Plateforme Technologique CYROI, Université de La Réunion, Sainte-Clotilde, La Réunion, France
- UMR ENTROPIE (Écologie marine tropicale des océans Pacifique et Indien) CNRS, IRD 250, Université de La Réunion, 15 Avenue René Cassin, CS 92003, 97744, Saint Denis Cedex 9, La Réunion, France
| | - Amandine Gamble
- Centre d'Écologie Fonctionnelle et Évolutive (CEFE), CNRS, EPHE, IRD, Université de Montpellier, Université Paul Valéry Montpellier 3, Montpellier, France
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA, USA
| | - Erwan Lagadec
- UMR PIMIT (Processus Infectieux en Milieu Insulaire Tropical), CNRS 9192, INSERM 1187, IRD 249, Plateforme Technologique CYROI, Université de La Réunion, Sainte-Clotilde, La Réunion, France
- Réserve Naturelle Nationale des Terres Australes Françaises, Terres Australes et Antarctiques Françaises, rue Gabriel Dejean, Saint Pierre, La Réunion, France
| | - Camille Lebarbenchon
- UMR PIMIT (Processus Infectieux en Milieu Insulaire Tropical), CNRS 9192, INSERM 1187, IRD 249, Plateforme Technologique CYROI, Université de La Réunion, Sainte-Clotilde, La Réunion, France
| | - Vincent Bourret
- Centre d'Écologie Fonctionnelle et Évolutive (CEFE), CNRS, EPHE, IRD, Université de Montpellier, Université Paul Valéry Montpellier 3, Montpellier, France
| | - Jérémy Tornos
- Centre d'Écologie Fonctionnelle et Évolutive (CEFE), CNRS, EPHE, IRD, Université de Montpellier, Université Paul Valéry Montpellier 3, Montpellier, France
- Ceva Biovac Campus, Beaucouzé, France
| | - Christophe Barbraud
- Centre d'Études Biologiques de Chizé, UMR CNRS 7372, Université La Rochelle, Villiers en Bois, France
| | - Karin Lemberger
- Vet Diagnostics, 14, Avenue Rockefeller, 69008, Lyon, France
| | - Karine Delord
- Centre d'Études Biologiques de Chizé, UMR CNRS 7372, Université La Rochelle, Villiers en Bois, France
| | - Henri Weimerskirch
- Centre d'Études Biologiques de Chizé, UMR CNRS 7372, Université La Rochelle, Villiers en Bois, France
| | - Jean-Baptiste Thiebot
- Réserve Naturelle Nationale des Terres Australes Françaises, Terres Australes et Antarctiques Françaises, rue Gabriel Dejean, Saint Pierre, La Réunion, France
- Centre d'Études Biologiques de Chizé, UMR CNRS 7372, Université La Rochelle, Villiers en Bois, France
- National Institute of Polar Research, 10-3, Midori-cho, Tachikawa, Tokyo, 190-8518, Japan
| | - Thierry Boulinier
- Centre d'Écologie Fonctionnelle et Évolutive (CEFE), CNRS, EPHE, IRD, Université de Montpellier, Université Paul Valéry Montpellier 3, Montpellier, France
| | - Pablo Tortosa
- UMR PIMIT (Processus Infectieux en Milieu Insulaire Tropical), CNRS 9192, INSERM 1187, IRD 249, Plateforme Technologique CYROI, Université de La Réunion, Sainte-Clotilde, La Réunion, France.
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9
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Gamble A, Garnier R, Chambert T, Gimenez O, Boulinier T. Next-generation serology: integrating cross-sectional and capture-recapture approaches to infer disease dynamics. Ecology 2020; 101:e02923. [PMID: 31655002 DOI: 10.1002/ecy.2923] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 09/18/2019] [Accepted: 09/26/2019] [Indexed: 01/27/2023]
Abstract
Two approaches have been classically used in disease ecology to estimate epidemiological parameters from field studies: cross-sectional sampling from unmarked individuals and longitudinal capture-recapture setups, which generally involve more limited numbers of marked individuals due to cost and logistical constraints. Although the benefits of longitudinal setups are increasingly acknowledged in the disease ecology community, cross-sectional data remain largely overrepresented in the literature, probably because of the inherent costs of longitudinal surveys. In this context, we used simulated data to compare the performances of cross-sectional and longitudinal designs to estimate the force of infection (i.e., the rate at which susceptible individuals become infected). Then, inspired from recent method developments in quantitative ecology, we explore the benefits of integrating both cross-sectional (seroprevalences) and longitudinal (individuals histories) data sets. In doing so, we investigate the effects of host species life history, antibody persistence, and degree of a priori knowledge and uncertainty on demographic and epidemiological parameters, as those are expected to affect in different ways the level of inference possible from the data. Our results highlight how those elements are important to consider in determining optimal sampling designs. In the case of long-lived species exposed to infectious agents resulting in persistent antibody responses, integrated designs are especially valuable as they benefit from the performances of longitudinal designs even with relatively small longitudinal sample sizes. As an illustration, we apply this approach to a combination of empirical and simulated data inspired from a case of bats exposed to a rabies virus. Overall, this work highlights that serology field studies could greatly benefit from the opportunity of integrating cross-sectional and longitudinal designs.
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Affiliation(s)
- Amandine Gamble
- CEFE, CNRS, University of Montpellier, EPHE, University Paul Valéry Montpellier 3, IRD, Montpellier, France.,Department of Ecology and Evolutionary Biology, University of California, 610 Charles E. Young Dr. South, Los Angeles, 90095-7239, USA
| | - Romain Garnier
- Department of Biology, Georgetown University, 37th and O Streets, Washington, 20057, USA
| | - Thierry Chambert
- CEFE, CNRS, University of Montpellier, EPHE, University Paul Valéry Montpellier 3, IRD, Montpellier, France
| | - Olivier Gimenez
- CEFE, CNRS, University of Montpellier, EPHE, University Paul Valéry Montpellier 3, IRD, Montpellier, France
| | - Thierry Boulinier
- CEFE, CNRS, University of Montpellier, EPHE, University Paul Valéry Montpellier 3, IRD, Montpellier, France
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10
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Phillips RA, Kraev I, Lange S. Protein Deimination and Extracellular Vesicle Profiles in Antarctic Seabirds. BIOLOGY 2020; 9:E15. [PMID: 31936359 PMCID: PMC7168935 DOI: 10.3390/biology9010015] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 12/19/2019] [Accepted: 01/07/2020] [Indexed: 02/06/2023]
Abstract
Pelagic seabirds are amongst the most threatened of all avian groups. They face a range of immunological challenges which seem destined to increase due to environmental changes in their breeding and foraging habitats, affecting prey resources and exposure to pollution and pathogens. Therefore, the identification of biomarkers for the assessment of their health status is of considerable importance. Peptidylarginine deiminases (PADs) post-translationally convert arginine into citrulline in target proteins in an irreversible manner. PAD-mediated deimination can cause structural and functional changes in target proteins, allowing for protein moonlighting in physiological and pathophysiological processes. PADs furthermore contribute to the release of extracellular vesicles (EVs), which play important roles in cellular communication. In the present study, post-translationally deiminated protein and EV profiles of plasma were assessed in eight seabird species from the Antarctic, representing two avian orders: Procellariiformes (albatrosses and petrels) and Charadriiformes (waders, auks, gulls and skuas). We report some differences between the species assessed, with the narrowest EV profiles of 50-200 nm in the northern giant petrel Macronectes halli, and the highest abundance of larger 250-500 nm EVs in the brown skua Stercorarius antarcticus. The seabird EVs were positive for phylogenetically conserved EV markers and showed characteristic EV morphology. Post-translational deimination was identified in a range of key plasma proteins critical for immune response and metabolic pathways in three of the bird species under study; the wandering albatross Diomedea exulans, south polar skua Stercorarius maccormicki and northern giant petrel. Some differences in Gene Ontology (GO) biological and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways for deiminated proteins were observed between these three species. This indicates that target proteins for deimination may differ, potentially contributing to a range of physiological functions relating to metabolism and immune response, as well as to key defence mechanisms. PAD protein homologues were identified in the seabird plasma by Western blotting via cross-reaction with human PAD antibodies, at an expected 75 kDa size. This is the first study to profile EVs and to identify deiminated proteins as putative novel plasma biomarkers in Antarctic seabirds. These biomarkers may be further refined to become useful indicators of physiological and immunological status in seabirds-many of which are globally threatened.
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Affiliation(s)
- Richard A. Phillips
- British Antarctic Survey, Natural Environment Research Council, Cambridge CB3 0ET, UK;
| | - Igor Kraev
- Electron Microscopy Suite, Faculty of Science, Technology, Engineering and Mathematics, Open University, Milton Keynes MK7 6AA, UK;
| | - Sigrun Lange
- Tissue Architecture and Regeneration Research Group, School of Life Sciences, University of Westminster, London W1W 6UW, UK
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11
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Gamble A, Bazire R, Delord K, Barbraud C, Jaeger A, Gantelet H, Thibault E, Lebarbenchon C, Lagadec E, Tortosa P, Weimerskirch H, Thiebot J, Garnier R, Tornos J, Boulinier T. Predator and scavenger movements among and within endangered seabird colonies: Opportunities for pathogen spread. J Appl Ecol 2019. [DOI: 10.1111/1365-2664.13531] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Amandine Gamble
- Centre d'Écologie Fonctionnelle et Évolutive (CEFE) UMR CNRS 5175University of MontpellierEPHEUniversity Paul Valéry Montpellier 3IRD Montpellier France
- Department of Ecology and Evolutionary Biology University of California Los Angeles CA USA
| | - Romain Bazire
- Centre d'Écologie Fonctionnelle et Évolutive (CEFE) UMR CNRS 5175University of MontpellierEPHEUniversity Paul Valéry Montpellier 3IRD Montpellier France
| | - Karine Delord
- Centre d'Études Biologiques de Chizé (CEBC) UMR CNRS 7372Université La Rochelle Villiers en Bois France
| | - Christophe Barbraud
- Centre d'Études Biologiques de Chizé (CEBC) UMR CNRS 7372Université La Rochelle Villiers en Bois France
| | - Audrey Jaeger
- Université de la RéunionUMR Processus Infectieux en Milieu Insulaire Tropical (PIMIT)CNRSGIP CYROI Saint Denis La Réunion France
- Université de la RéunionÉcologie Marine Tropicale des Océans Pacifique et Indien (ENTROPIE)UMR UR‐IRD‐CNRS Saint Denis La Réunion France
| | | | | | - Camille Lebarbenchon
- Université de la RéunionUMR Processus Infectieux en Milieu Insulaire Tropical (PIMIT)CNRSGIP CYROI Saint Denis La Réunion France
| | - Erwan Lagadec
- Université de la RéunionUMR Processus Infectieux en Milieu Insulaire Tropical (PIMIT)CNRSGIP CYROI Saint Denis La Réunion France
- Réserve Naturelle Nationale des Terres Australes Française La Réunion France
| | - Pablo Tortosa
- Université de la RéunionUMR Processus Infectieux en Milieu Insulaire Tropical (PIMIT)CNRSGIP CYROI Saint Denis La Réunion France
| | - Henri Weimerskirch
- Centre d'Études Biologiques de Chizé (CEBC) UMR CNRS 7372Université La Rochelle Villiers en Bois France
| | - Jean‐Baptiste Thiebot
- Centre d'Études Biologiques de Chizé (CEBC) UMR CNRS 7372Université La Rochelle Villiers en Bois France
- Réserve Naturelle Nationale des Terres Australes Française La Réunion France
- National Institute of Polar Research Tachikawa Tokyo Japan
| | - Romain Garnier
- Department of Biology Georgetown University Washington D.C. USA
| | - Jérémy Tornos
- Centre d'Écologie Fonctionnelle et Évolutive (CEFE) UMR CNRS 5175University of MontpellierEPHEUniversity Paul Valéry Montpellier 3IRD Montpellier France
- Ceva Biovac Beaucouzé France
| | - Thierry Boulinier
- Centre d'Écologie Fonctionnelle et Évolutive (CEFE) UMR CNRS 5175University of MontpellierEPHEUniversity Paul Valéry Montpellier 3IRD Montpellier France
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