Erysipelothrix amsterdamensis sp. nov., associated with mortalities among endangered seabirds

Author:

Zhong Jiadong12ORCID,Medvecky Matej32ORCID,Tornos Jérémy45ORCID,Clessin Augustin65,Le Net Rozenn7ORCID,Gantelet Hubert4,Gamble Amandine892ORCID,Forde Taya L.2ORCID,Boulinier Thierry5ORCID

Affiliation:

1. School of Life Sciences, Westlake University, Hangzhou, Zhejiang, PR China

2. School of Biodiversity, One Health & Veterinary Medicine, University of Glasgow, Glasgow, G12 8QQ, UK

3. Bioinformatics Research Technology Platform, University of Warwick, Coventry, CV4 7AL, UK

4. Ceva Biovac, Beaucouzé, France

5. CEFE, UMR 5175, Univ Montpellier, CNRS, EPHE, IRD, Montpellier, France

6. École Normale Supérieure de Lyon, 69342 Lyon Cedex 07, France

7. Vet Diagnostics, 69260 Charbonnières-les-Bains, France

8. Department of Ecology and Evolutionary Biology, University of California, Los Angeles, USA

9. Department of Public and Ecosystem Health, Cornell University, Ithaca, New York, USA

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.

Funder

National Science Foundation

Institut Polaire Français Paul Emile Victor

Strategic Environmental Research and Development Program

ANR ECOPATHS

Terres Australes et Antarctiques Françaises

OSU OREME ECOPOP

Publisher

Microbiology Society

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3