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Kumar S, Dubey R, Mishra R, Gupta S, Dwivedi VD, Ray S, Jha NK, Verma D, Tsai LW, Dubey NK. Repurposing of SARS-CoV-2 compounds against Marburg Virus using MD simulation, mm/GBSA, PCA analysis, and free energy landscape. J Biomol Struct Dyn 2024:1-20. [PMID: 38450706 DOI: 10.1080/07391102.2024.2323701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 01/22/2024] [Indexed: 03/08/2024]
Abstract
The significant mortality rate associated with Marburg virus infection made it the greatest hazard among infectious diseases. Drug repurposing using in silico methods has been crucial in identifying potential compounds that could prevent viral replication by targeting the virus's primary proteins. This study aimed at repurposing the drugs of SARS-CoV-2 for identifying potential candidates against the matrix protein VP40 of the Marburg virus. Virtual screening was performed where the control compound, Nilotinib, showed a binding score of -9.99 kcal/mol. Based on binding scores, hit compounds 9549298, 11960895, 44545852, 51039094, and 89670174 were selected that had a lower binding score than the control. Subsequent molecular dynamics (MD) simulation revealed that compound 9549298 consistently formed a hydrogen bond with the residue Gln290. This was observed both in molecular docking and MD simulation poses, indicating a strong and significant interaction with the protein. 11960895 had the most stable and consistent RMSD pattern exhibited in 100 ns simulation, while 9549298 had the most identical RMSD plot compared to the control molecule. MM/PBSA analysis showed that the binding free energy (ΔG) of 9549298 and 11960895 was lower than the control, with -30.84 and -38.86 kcal/mol, respectively. It was observed by the PCA (principal component analysis) and FEL (free energy landscape) analysis that compounds 9549298 and 11960895 had lesser conformational variation. Overall, this study proposed 9549298 and 11960895 as potential binders of VP40 MARV that can cause its inhibition, however it inherently lacks experimental validation. Furthermore, the study proposes in-vitro experiments as the next step to validate these computational findings, offering a practical approach to further explore these compounds' potential as antiviral agents.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Sanjay Kumar
- Biological and Bio-computational Lab, Department of Life Science, School of Basic Science and Research, Sharda University, Greater Noida, UP, India
| | - Rajni Dubey
- Division of Cardiology, Department of Internal Medicine, Taipei Medical University Hospital, Taipei City, Taiwan
| | - Richa Mishra
- Department of Computer Engineering, Parul University, Vadodara, Gujarat, India
| | - Saurabh Gupta
- Department of Biotechnology, GLA University, Mathura, Uttar Pradesh, India
| | - Vivek Dhar Dwivedi
- Center for Global Health Research, Saveetha Medical College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India
- Bioinformatics Research Division, Greater Noida, UP, India
| | - Subhasree Ray
- Department of Life Science, School of Basic Science and Research, Sharda University, Greater Noida, India
| | - Niraj Kumar Jha
- School of Bioengineering & Biosciences, Lovely Professional University, Phagwara, India
- Centre of Research Impact and Outreach, Chitkara University Institute of Engineering and Technology, Chitkara University, Punjab, India
| | - Devvret Verma
- Department of Biotechnology, Graphic Era (Deemed to Be University), Dehradun, Uttarakhand, India
| | - Lung-Wen Tsai
- Department of Medicine Research, Taipei Medical University Hospital, Taipei, Taiwan
- Department of Information Technology Office, Taipei Medical University Hospital, Taipei, Taiwan
- Graduate Institute of Data Science, College of Management, Taipei Medical University, Taipei, Taiwan
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Peter-Ajuzie IK, Chukwu HS, Igbokwe CO. Microstructural characterization of the skin in the African straw-coloured fruit bat, Eidolon helvum (Pteropodidae). Anat Histol Embryol 2024; 53:e13003. [PMID: 37987196 DOI: 10.1111/ahe.13003] [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: 11/02/2022] [Revised: 10/03/2023] [Accepted: 11/12/2023] [Indexed: 11/22/2023]
Abstract
The African straw-coloured fruit Bat, Eidolon helvum, is a Yinpterochiroptera bat that is of public health and ecological importance. This study investigated the light microscopic morphology, morphometry and histochemistry of the skin and its glands across the cheek, withers, croup, ventral abdomen, perianal region, wing membrane, intercrural membrane and foot pad of the species. Sweat glands were absent and hypodermis was observed only in the withers, croup and ventral abdomen. The croup had the highest density of hair follicles while the perianal region had the highest density of sebaceous gland acini. The thicknesses of the dermis and epidermis were significantly high in the withers and foot pad respectively. Hair follicles and sebaceous glands were absent in the wing membrane. The sebaceous glands had melanin pigmentation at the periphery and stained positive to Alcian Blue-periodic acid Schiff at the withers and ventral abdomen. Epidermal and dermal thicknesses reported in this study were generally higher than those of Yangochiroptera bats and the presence of sebaceous glands and hair follicles in the wing membrane were variable in different bat species. This study has provided baseline information on the light microscopic morphology and morphometry of the skin and its glands across the various body regions in the African straw-coloured fruit bat. This information would be helpful in the understanding, handling, skin disease treatment and management of the bat in captivity for biomedical research purposes.
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Affiliation(s)
- Iheanyi Kemdirim Peter-Ajuzie
- Department of Veterinary Anatomy, Faculty of Veterinary Medicine, University of Nigeria, Nsukka, Enugu State, Nigeria
- Department of Veterinary Anatomy, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - Hannah Sarah Chukwu
- Department of Veterinary Anatomy, Faculty of Veterinary Medicine, University of Nigeria, Nsukka, Enugu State, Nigeria
| | - Casmir Onwuaso Igbokwe
- Department of Veterinary Anatomy, Faculty of Veterinary Medicine, University of Nigeria, Nsukka, Enugu State, Nigeria
- Department of Veterinary Biomedical Sciences, Faculty of Veterinary Medicine, Lilongwe University of Agriculture and Natural Resources, Bunda Campus, Malawi
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Maugoust J, Orliac MJ. Anatomical correlates and nomenclature of the chiropteran endocranial cast. Anat Rec (Hoboken) 2023; 306:2791-2829. [PMID: 37018745 DOI: 10.1002/ar.25206] [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: 11/14/2022] [Revised: 02/07/2023] [Accepted: 02/08/2023] [Indexed: 04/07/2023]
Abstract
Bats form a diverse group of mammals that are highly specialized in active flight and ultrasound echolocation. These specializations rely on adaptations that reflect on their morphoanatomy and have been tentatively linked to brain morphology and volumetry. Despite their small size and fragility, bat crania and natural braincase casts ("endocasts") have been preserved in the fossil record, which allows for investigating brain evolution and inferring paleobiology. Advances in imaging techniques have allowed virtual extraction of internal structures, assuming that the shape of the endocast reflects soft organ morphology. However, there is no direct correspondence between the endocast and internal structures because meninges and vascular tissues mark the inner braincase together with the brain they surround, resulting in a mosaic morphology of the endocast. The hypothesis suggesting that the endocast reflects the brain in terms of both external shape and volume has drastic implications when addressing brain evolution, but it has been rarely discussed. To date, only a single study addressed the correspondence between the brain and braincase in bats. Taking advantage of the advent of imaging techniques, we reviewed the anatomical, neuroanatomical, and angiological literature and compare this knowledge available on bat's braincase anatomy with anatomical observations using a sample of endocranial casts representing most modern bat families. Such comparison allows to propose a Chiroptera-scale nomenclature for future descriptions and comparisons among bat endocasts. Describing the imprints of the tissues surrounding the brain also allows to address to what extent brain features can be blurred or hidden (e.g., hypophysis, epiphysis, colliculi, flocculus). Furthermore, this approach encourages further study to formally test the proposed hypotheses.
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Affiliation(s)
- Jacob Maugoust
- Institut des Sciences de l'Evolution de Montpellier, département CHANGE, équipe Paléontologie, UMR 5554 Université de Montpellier, CNRS, IRD, EPHE, Place Eugène Bataillon, Montpellier Cedex 5, 34095, France
| | - Maeva Judith Orliac
- Institut des Sciences de l'Evolution de Montpellier, département CHANGE, équipe Paléontologie, UMR 5554 Université de Montpellier, CNRS, IRD, EPHE, Place Eugène Bataillon, Montpellier Cedex 5, 34095, France
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Demos TC, Webala PW, Goodman SM, Kerbis Peterhans JC, Lutz HL, Agwanda BR, Cortés-Delgado N, Briones S, Ree RH, Patterson BD. Ultraconserved elements resolve phylogenetic relationships and biogeographic history of African-Malagasy bent-winged bats (Miniopterus). Mol Phylogenet Evol 2023; 188:107890. [PMID: 37517508 DOI: 10.1016/j.ympev.2023.107890] [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: 05/30/2023] [Revised: 07/17/2023] [Accepted: 07/25/2023] [Indexed: 08/01/2023]
Abstract
African-Malagasy species of the bat genus Miniopterus are notable both for the dramatic increase in the number of newly recognized species over the last 15 years, as well as for the profusion of new taxa from Madagascar and the neighboring Comoros. Since 2007, seven new Malagasy Miniopterus species have been described compared to only two new species since 1936 from the Afrotropics. The conservative morphology of Miniopterus and limited geographic sampling in continental Africa have undoubtedly contributed to the deficit of continental species. In addition to uncertainty over species limits, phylogenetic relationships of Miniopterus remain mostly unresolved, particularly at deeper backbone nodes. Previous phylogenetic studies were based on limited taxon sampling and/or limited genetic sampling involving no more than five loci. Here, we conduct the first phylogenomic study of the Afrotropical Miniopteridae by analyzing up to 3772 genome-wide ultraconserved elements (UCEs) from historic and modern samples of 70 individuals from 25 Miniopterus species/lineages. We analyze multiple datasets of varying degrees of completeness (70, 90, and 100 percent complete) using partitioned concatenated maximum likelihood and multispecies coalescent methods. Our well-supported, species-level phylogenies resolved most (6/8 or 7/8) backbone nodes and strongly support for the first time the monophyly of the Malagasy radiation. We inferred the crown age of African Miniopteridae in the late Miocene (10.4 Ma), while the main lineages of Miniopterus appear to have contemporaneously diversified in two sister radiations in the Afrotropics and Madagascar. Species-level divergence of 23 of 25 African + Malagasy Miniopterus were estimated to have 95 % HPDs that overlap with the late Miocene (5.3-10.4 Ma). We present ancestral range estimates that unambiguously support a continental African radiation that originated in the Zambezian and Somalian/Ethiopian biogeographic regions, but we cannot rule out back colonization of Africa from Madagascar. The phylogeny indicates genetic support for up to seven new species.
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Affiliation(s)
- Terrence C Demos
- Negaunee Integrative Research Center, Field Museum of Natural History, Chicago, IL, USA.
| | - Paul W Webala
- Department of Forestry and Wildlife Management, Maasai Mara University, Narok, Kenya
| | - Steven M Goodman
- Negaunee Integrative Research Center, Field Museum of Natural History, Chicago, IL, USA; Association Vahatra, BP 3972, Antananarivo 101, Madagascar
| | - Julian C Kerbis Peterhans
- Negaunee Integrative Research Center, Field Museum of Natural History, Chicago, IL, USA; College of Arts & Sciences, Roosevelt University, Chicago, IL, USA
| | - Holly L Lutz
- Negaunee Integrative Research Center, Field Museum of Natural History, Chicago, IL, USA; Department of Immunology and Microbiology, Scripps Research Institute, La Jolla, CA, USA
| | | | - Natalia Cortés-Delgado
- Negaunee Integrative Research Center, Field Museum of Natural History, Chicago, IL, USA; Department of Biological Sciences, University of Illinois at Chicago, Chicago, IL, USA
| | - Stefania Briones
- Negaunee Integrative Research Center, Field Museum of Natural History, Chicago, IL, USA; Department of Biological Sciences, University of Illinois at Chicago, Chicago, IL, USA
| | - Richard H Ree
- Negaunee Integrative Research Center, Field Museum of Natural History, Chicago, IL, USA
| | - Bruce D Patterson
- Negaunee Integrative Research Center, Field Museum of Natural History, Chicago, IL, USA
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Alsaady IM, Bajrai LH, Alandijany TA, Gattan HS, El-Daly MM, Altwaim SA, Alqawas RT, Dwivedi VD, Azhar EI. Cheminformatics Strategies Unlock Marburg Virus VP35 Inhibitors from Natural Compound Library. Viruses 2023; 15:1739. [PMID: 37632081 PMCID: PMC10459822 DOI: 10.3390/v15081739] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 08/08/2023] [Accepted: 08/12/2023] [Indexed: 08/27/2023] Open
Abstract
The Ebola virus and its close relative, the Marburg virus, both belong to the family Filoviridae and are highly hazardous and contagious viruses. With a mortality rate ranging from 23% to 90%, depending on the specific outbreak, the development of effective antiviral interventions is crucial for reducing fatalities and mitigating the impact of Marburg virus outbreaks. In this investigation, a virtual screening approach was employed to evaluate 2042 natural compounds for their potential interactions with the VP35 protein of the Marburg virus. Average and worst binding energies were calculated for all 20 poses, and compounds that exhibited binding energies <-6 kcal/mol in both criteria were selected for further analysis. Based on binding energies, only six compounds (Estradiol benzoate, INVEGA (paliperidone), Isosilybin, Protopanaxadiol, Permethrin, and Bufalin) were selected for subsequent investigations, focusing on interaction analysis. Among these selected compounds, Estradiol benzoate, INVEGA (paliperidone), and Isosilybin showed strong hydrogen bonds, while the others did not. In this study, the compounds Myricetin, Isosilybin, and Estradiol benzoate were subjected to a molecular dynamics (MD) simulation and free binding energy calculation using MM/GBSA analysis. The reference component Myricetin served as a control. Estradiol benzoate exhibited the most stable and consistent root-mean-square deviation (RMSD) values, whereas Isosilybin showed significant fluctuations in RMSD. The compound Estradiol benzoate exhibited the lowest ΔG binding free energy (-22.89 kcal/mol), surpassing the control compound's binding energy (-9.29 kcal/mol). Overall, this investigation suggested that Estradiol benzoate possesses favorable binding free energies, indicating a potential inhibitory mechanism against the VP35 protein of the Marburg virus. The study proposes that these natural compounds could serve as a therapeutic option for preventing Marburg virus infection. However, experimental validation is required to further corroborate these findings.
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Affiliation(s)
- Isra M. Alsaady
- Special Infectious Agents Unit BSL3, King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21362, Saudi Arabia; (I.M.A.)
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21362, Saudi Arabia
| | - Leena H. Bajrai
- Special Infectious Agents Unit BSL3, King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21362, Saudi Arabia; (I.M.A.)
- Biochemistry Department, Faculty of Sciences, King Abdulaziz University, Jeddah 21362, Saudi Arabia
| | - Thamir A. Alandijany
- Special Infectious Agents Unit BSL3, King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21362, Saudi Arabia; (I.M.A.)
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21362, Saudi Arabia
| | - Hattan S. Gattan
- Special Infectious Agents Unit BSL3, King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21362, Saudi Arabia; (I.M.A.)
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21362, Saudi Arabia
| | - Mai M. El-Daly
- Special Infectious Agents Unit BSL3, King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21362, Saudi Arabia; (I.M.A.)
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21362, Saudi Arabia
| | - Sarah A. Altwaim
- Special Infectious Agents Unit BSL3, King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21362, Saudi Arabia; (I.M.A.)
- Department of Clinical Microbiology and Immunology, Faculty of Medicine, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Rahaf T. Alqawas
- Molecular Diagnostic Laboratory, King Abdulaziz University Hospital, King Abdulaziz University, Jeddah 21362, Saudi Arabia;
| | - Vivek Dhar Dwivedi
- Bioinformatics Research Division, Quanta Calculus, Greater Noida 201310, India
- Center for Global Health Research, Saveetha Institute of Medical and Technical Sciences, Saveetha Medical College and Hospitals, Saveetha University, Tamil Nadu 602105, India
| | - Esam I. Azhar
- Special Infectious Agents Unit BSL3, King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21362, Saudi Arabia; (I.M.A.)
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21362, Saudi Arabia
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Ramanantsalama RV, Goodman SM, Dietrich M, Lebarbenchon C. Interaction between Old World fruit bats and humans: From large scale ecosystem services to zoonotic diseases. Acta Trop 2022; 231:106462. [PMID: 35421381 DOI: 10.1016/j.actatropica.2022.106462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 04/07/2022] [Accepted: 04/09/2022] [Indexed: 11/01/2022]
Abstract
The Old World tropical and subtropical frugivorous bat genus Rousettus (Pteropodidae) contains species with broad distributions, as well as those occurring in restricted geographical areas, particularly islands. Herein we review the role of Rousettus as a keystone species from a global "One Health" approach and related to ecosystem functioning, zoonotic disease and public health. Rousettus are efficient at dispersing seeds and pollinating flowers; their role in forest regeneration is related to their ability to fly considerable distances during nightly foraging bouts and their relatively small body size, which allows them to access fruits in forested areas with closed vegetation. Rousettus are also reservoirs for various groups of pathogens (viruses, bacteria, fungi, protozoa), which, by definition, are infectious agents causing disease. The study of day roosts of different species of Rousettus and the successful establishment of captive breeding colonies have provided important details related to the infection dynamics of their associated pathogens. Large-scale conversion of forested areas into agricultural landscapes has increased contact between humans and Rousettus, therefore augmenting the chances of infectious agent spillover. Many crucial scientific details are still lacking related to members of this genus, which have direct bearing on the prevention of emerging disease outbreaks, as well as the conservation of these bats. The public should be better informed on the capacity of fruit bats as keystone species for large scale forest regeneration and in spreading pathogens. Precise details on the transmission of zoonotic diseases of public health importance associated with Rousettus should be given high priority.
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Nesi N, Tsagkogeorga G, Tsang SM, Nicolas V, Lalis A, Scanlon AT, Riesle-Sbarbaro SA, Wiantoro S, Hitch AT, Juste J, Pinzari CA, Bonaccorso FJ, Todd CM, Lim BK, Simmons NB, McGowen MR, Rossiter SJ. Interrogating Phylogenetic Discordance Resolves Deep Splits in the Rapid Radiation of Old World Fruit Bats (Chiroptera: Pteropodidae). Syst Biol 2021; 70:1077-1089. [PMID: 33693838 PMCID: PMC8513763 DOI: 10.1093/sysbio/syab013] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 04/27/2021] [Accepted: 03/03/2021] [Indexed: 11/14/2022] Open
Abstract
The family Pteropodidae (Old World fruit bats) comprises $>$200 species distributed across the Old World tropics and subtropics. Most pteropodids feed on fruit, suggesting an early origin of frugivory, although several lineages have shifted to nectar-based diets. Pteropodids are of exceptional conservation concern with $>$50% of species considered threatened, yet the systematics of this group has long been debated, with uncertainty surrounding early splits attributed to an ancient rapid diversification. Resolving the relationships among the main pteropodid lineages is essential if we are to fully understand their evolutionary distinctiveness, and the extent to which these bats have transitioned to nectar-feeding. Here we generated orthologous sequences for $>$1400 nuclear protein-coding genes (2.8 million base pairs) across 114 species from 43 genera of Old World fruit bats (57% and 96% of extant species- and genus-level diversity, respectively), and combined phylogenomic inference with filtering by information content to resolve systematic relationships among the major lineages. Concatenation and coalescent-based methods recovered three distinct backbone topologies that were not able to be reconciled by filtering via phylogenetic information content. Concordance analysis and gene genealogy interrogation show that one topology is consistently the best supported, and that observed phylogenetic conflicts arise from both gene tree error and deep incomplete lineage sorting. In addition to resolving long-standing inconsistencies in the reported relationships among major lineages, we show that Old World fruit bats have likely undergone at least seven independent dietary transitions from frugivory to nectarivory. Finally, we use this phylogeny to identify and describe one new genus. [Chiroptera; coalescence; concordance; incomplete lineage sorting; nectar feeder; species tree; target enrichment.].
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Affiliation(s)
- Nicolas Nesi
- School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London E1 4NS, UK
| | - Georgia Tsagkogeorga
- School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London E1 4NS, UK
| | - Susan M Tsang
- Department of Mammalogy, Division of Vertebrate Zoology, American Museum of Natural History, New York, USA
- Zoology Section, National Museum of Natural History, Manila, Philippines
| | - Violaine Nicolas
- Institut de Systématique, Evolution, Biodiversité (ISYEB), Muséum national d’Histoire naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, Paris, France
| | - Aude Lalis
- Institut de Systématique, Evolution, Biodiversité (ISYEB), Muséum national d’Histoire naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, Paris, France
| | - Annette T Scanlon
- School of Natural and Built Environments, University of South Australia, Mawson Lakes, SA, Australia
| | - Silke A Riesle-Sbarbaro
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
- Institute of Zoology, Zoological Society of London, London, UK
- Centre for Biological Threats and Special Pathogens, Robert Koch Institute, Berlin, Germany
| | - Sigit Wiantoro
- Museum Zoologicum Bogoriense, Research Center for Biology, Indonesian Institute of Sciences, Cibinong, Indonesia
| | - Alan T Hitch
- Department of Wildlife, Fish, and Conservation Biology, University of California Davis, CA, USA
| | - Javier Juste
- Estación Biológica de Doñana (CSIC), Avda. Américo Vespucio, Sevilla, Spain
| | | | | | - Christopher M Todd
- The Hawkesbury institute for the Environment, Western Sydney University, Australia
| | - Burton K Lim
- Royal Ontario Museum, Toronto, ON M5S 2C6, Canada
| | - Nancy B Simmons
- Department of Mammalogy, Division of Vertebrate Zoology, American Museum of Natural History, New York, USA
| | - Michael R McGowen
- Department of Vertebrate Zoology, Smithsonian National Museum of Natural History, Washington, DC, USA
| | - Stephen J Rossiter
- School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London E1 4NS, UK
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Andronowski JM, Cole ME, Hieronymus TL, Davis RA, Usher LR, Cooper LN. Intraskeletal consistency in patterns of vascularity within bat limb bones. Anat Rec (Hoboken) 2021; 305:462-476. [PMID: 34101383 DOI: 10.1002/ar.24694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 04/28/2021] [Accepted: 04/30/2021] [Indexed: 11/11/2022]
Abstract
Bats are the only mammals to have achieved powered flight. A key innovation allowing for bats to conquer the skies was a forelimb modified into a flexible wing. The wing bones of bats are exceptionally long and dynamically bend with wingbeats. Bone microarchitectural features supporting these novel performance attributes are still largely unknown. The humeri and femora of bats are typically avascular, except for large-bodied taxa (e.g., pteropodid flying foxes). No thorough investigation of vascular canal regionalization and morphology has been undertaken as historically it has been difficult to reconstruct the 3D architecture of these canals. This study augments our understanding of the vascular networks supporting the bone matrix of a sample of bats (n = 24) of variable body mass, representing three families (Pteropodidae [large-bodied, species = 6], Phyllostomidae [medium-bodied, species = 2], and Molossidae [medium-bodied, species = 1]). We employed Synchrotron Radiation-based micro-Computed Tomography (SRμCT) to allow for a detailed comparison of canal morphology within humeri and femora. Results indicate that across selected bats, canal number per unit volume is similar independent of body size. Differences in canal morphometry based on body size and bone type appear primarily related to a broader distribution of the canal network as cortical volume increases. Heavier bats display a relatively rich vascular network of mostly longitudinally-oriented canals that are localized mainly to the mid-cortical and endosteal bone envelopes. Taken together, our results suggest that relative vascularity of the limb bones of heavier bats forms support for nutrient exchange in a regional pattern.
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Affiliation(s)
- Janna M Andronowski
- Division of Biomedical Sciences, Faculty of Medicine, Memorial University of Newfoundland, St. John's, NL, Canada
| | - Mary E Cole
- Department of Biology, The University of Akron, Akron, Ohio, USA
| | - Tobin L Hieronymus
- Department of Anatomy and Neurobiology, Northeast Ohio Medical University, Rootstown, Ohio, USA.,Musculoskeletal Research Group, Northeast Ohio Medical University, Rootstown, Ohio, USA
| | - Reed A Davis
- Department of Biology, The University of Akron, Akron, Ohio, USA
| | - Logan R Usher
- Department of Biology, The University of Akron, Akron, Ohio, USA
| | - Lisa Noelle Cooper
- Department of Anatomy and Neurobiology, Northeast Ohio Medical University, Rootstown, Ohio, USA.,Musculoskeletal Research Group, Northeast Ohio Medical University, Rootstown, Ohio, USA
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Couvreur TL, Dauby G, Blach‐Overgaard A, Deblauwe V, Dessein S, Droissart V, Hardy OJ, Harris DJ, Janssens SB, Ley AC, Mackinder BA, Sonké B, Sosef MS, Stévart T, Svenning J, Wieringa JJ, Faye A, Missoup AD, Tolley KA, Nicolas V, Ntie S, Fluteau F, Robin C, Guillocheau F, Barboni D, Sepulchre P. Tectonics, climate and the diversification of the tropical African terrestrial flora and fauna. Biol Rev Camb Philos Soc 2021; 96:16-51. [PMID: 32924323 PMCID: PMC7821006 DOI: 10.1111/brv.12644] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 08/07/2020] [Accepted: 08/13/2020] [Indexed: 12/30/2022]
Abstract
Tropical Africa is home to an astonishing biodiversity occurring in a variety of ecosystems. Past climatic change and geological events have impacted the evolution and diversification of this biodiversity. During the last two decades, around 90 dated molecular phylogenies of different clades across animals and plants have been published leading to an increased understanding of the diversification and speciation processes generating tropical African biodiversity. In parallel, extended geological and palaeoclimatic records together with detailed numerical simulations have refined our understanding of past geological and climatic changes in Africa. To date, these important advances have not been reviewed within a common framework. Here, we critically review and synthesize African climate, tectonics and terrestrial biodiversity evolution throughout the Cenozoic to the mid-Pleistocene, drawing on recent advances in Earth and life sciences. We first review six major geo-climatic periods defining tropical African biodiversity diversification by synthesizing 89 dated molecular phylogeny studies. Two major geo-climatic factors impacting the diversification of the sub-Saharan biota are highlighted. First, Africa underwent numerous climatic fluctuations at ancient and more recent timescales, with tectonic, greenhouse gas, and orbital forcing stimulating diversification. Second, increased aridification since the Late Eocene led to important extinction events, but also provided unique diversification opportunities shaping the current tropical African biodiversity landscape. We then review diversification studies of tropical terrestrial animal and plant clades and discuss three major models of speciation: (i) geographic speciation via vicariance (allopatry); (ii) ecological speciation impacted by climate and geological changes, and (iii) genomic speciation via genome duplication. Geographic speciation has been the most widely documented to date and is a common speciation model across tropical Africa. We conclude with four important challenges faced by tropical African biodiversity research: (i) to increase knowledge by gathering basic and fundamental biodiversity information; (ii) to improve modelling of African geophysical evolution throughout the Cenozoic via better constraints and downscaling approaches; (iii) to increase the precision of phylogenetic reconstruction and molecular dating of tropical African clades by using next generation sequencing approaches together with better fossil calibrations; (iv) finally, as done here, to integrate data better from Earth and life sciences by focusing on the interdisciplinary study of the evolution of tropical African biodiversity in a wider geodiversity context.
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Affiliation(s)
| | - Gilles Dauby
- AMAP Lab, IRD, CIRAD, CNRS, INRAUniversity of MontpellierMontpellierFrance
- Laboratoire d'évolution Biologique et Ecologie, Faculté des SciencesUniversité Libre de BruxellesCP160/12, Avenue F.D. Roosevelt 50Brussels1050Belgium
| | - Anne Blach‐Overgaard
- Section for Ecoinformatics & Biodiversity, Department of BiologyAarhus UniversityNy Munkegade 114Aarhus CDK‐8000Denmark
- Center for Biodiversity Dynamics in a Changing World (BIOCHANGE), Department of BiologyAarhus UniversityNy Munkegade 114Aarhus CDK‐8000Denmark
| | - Vincent Deblauwe
- Center for Tropical Research (CTR), Institute of the Environment and SustainabilityUniversity of California, Los Angeles (UCLA)Los AngelesCA90095U.S.A.
- International Institute of Tropical Agriculture (IITA)YaoundéCameroon
| | | | - Vincent Droissart
- AMAP Lab, IRD, CIRAD, CNRS, INRAUniversity of MontpellierMontpellierFrance
- Laboratoire de Botanique Systématique et d'Écologie, École Normale SupérieureUniversité de Yaoundé IPO Box 047YaoundéCameroon
- Herbarium et Bibliothèque de Botanique AfricaineUniversité Libre de BruxellesBoulevard du TriompheBrusselsB‐1050Belgium
- Africa & Madagascar DepartmentMissouri Botanical GardenSt. LouisMOU.S.A.
| | - Oliver J. Hardy
- Laboratoire d'évolution Biologique et Ecologie, Faculté des SciencesUniversité Libre de BruxellesCP160/12, Avenue F.D. Roosevelt 50Brussels1050Belgium
| | - David J. Harris
- Royal Botanic Garden Edinburgh20A Inverleith RowEdinburghU.K.
| | | | - Alexandra C. Ley
- Institut für Geobotanik und Botanischer GartenUniversity Halle‐WittenbergNeuwerk 21Halle06108Germany
| | | | - Bonaventure Sonké
- Laboratoire de Botanique Systématique et d'Écologie, École Normale SupérieureUniversité de Yaoundé IPO Box 047YaoundéCameroon
| | | | - Tariq Stévart
- Herbarium et Bibliothèque de Botanique AfricaineUniversité Libre de BruxellesBoulevard du TriompheBrusselsB‐1050Belgium
- Africa & Madagascar DepartmentMissouri Botanical GardenSt. LouisMOU.S.A.
| | - Jens‐Christian Svenning
- Section for Ecoinformatics & Biodiversity, Department of BiologyAarhus UniversityNy Munkegade 114Aarhus CDK‐8000Denmark
- Center for Biodiversity Dynamics in a Changing World (BIOCHANGE), Department of BiologyAarhus UniversityNy Munkegade 114Aarhus CDK‐8000Denmark
| | - Jan J. Wieringa
- Naturalis Biodiversity CenterDarwinweg 2Leiden2333 CRThe Netherlands
| | - Adama Faye
- Laboratoire National de Recherches sur les Productions Végétales (LNRPV)Institut Sénégalais de Recherches Agricoles (ISRA)Route des Hydrocarbures, Bel Air BP 1386‐ CP18524DakarSenegal
| | - Alain D. Missoup
- Zoology Unit, Laboratory of Biology and Physiology of Animal Organisms, Faculty of ScienceUniversity of DoualaPO Box 24157DoualaCameroon
| | - Krystal A. Tolley
- South African National Biodiversity InstituteKirstenbosch Research CentrePrivate Bag X7, ClaremontCape Town7735South Africa
- School of Animal, Plant and Environmental SciencesUniversity of the WitwatersrandPrivate Bag 3Wits2050South Africa
| | - Violaine Nicolas
- Institut de Systématique, Evolution, Biodiversité (ISYEB), Muséum national d'Histoire naturelle, CNRS, Sorbonne Université, EPHEUniversité des AntillesCP51, 57 rue CuvierParis75005France
| | - Stéphan Ntie
- Département de Biologie, Faculté des SciencesUniversité des Sciences et Techniques de MasukuFrancevilleBP 941Gabon
| | - Frédiéric Fluteau
- Institut de Physique du Globe de Paris, CNRSUniversité de ParisParisF‐75005France
| | - Cécile Robin
- CNRS, Géosciences Rennes, UMR6118University of RennesRennes35042France
| | | | - Doris Barboni
- CEREGE, Aix‐Marseille University, CNRS, IRD, Collège de France, INRA, Technopole Arbois MéditerranéeBP80Aix‐en‐Provence cedex413545France
| | - Pierre Sepulchre
- Laboratoire des Sciences du Climat et de l'Environnement, LSCE/IPSL, CEA‐CNRS‐UVSQUniversité Paris‐SaclayGif‐sur‐YvetteF‐91191France
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10
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McKee CD, Islam A, Luby SP, Salje H, Hudson PJ, Plowright RK, Gurley ES. The Ecology of Nipah Virus in Bangladesh: A Nexus of Land-Use Change and Opportunistic Feeding Behavior in Bats. Viruses 2021; 13:169. [PMID: 33498685 PMCID: PMC7910977 DOI: 10.3390/v13020169] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 01/13/2021] [Accepted: 01/21/2021] [Indexed: 02/07/2023] Open
Abstract
Nipah virus is a bat-borne paramyxovirus that produces yearly outbreaks of fatal encephalitis in Bangladesh. Understanding the ecological conditions that lead to spillover from bats to humans can assist in designing effective interventions. To investigate the current and historical processes that drive Nipah spillover in Bangladesh, we analyzed the relationship among spillover events and climatic conditions, the spatial distribution and size of Pteropus medius roosts, and patterns of land-use change in Bangladesh over the last 300 years. We found that 53% of annual variation in winter spillovers is explained by winter temperature, which may affect bat behavior, physiology, and human risk behaviors. We infer from changes in forest cover that a progressive shift in bat roosting behavior occurred over hundreds of years, producing the current system where a majority of P. medius populations are small (median of 150 bats), occupy roost sites for 10 years or more, live in areas of high human population density, and opportunistically feed on cultivated food resources-conditions that promote viral spillover. Without interventions, continuing anthropogenic pressure on bat populations similar to what has occurred in Bangladesh could result in more regular spillovers of other bat viruses, including Hendra and Ebola viruses.
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Affiliation(s)
- Clifton D. McKee
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA;
| | - Ausraful Islam
- Infectious Diseases Division, icddr,b, Dhaka 1212, Bangladesh;
| | - Stephen P. Luby
- Infectious Diseases and Geographic Medicine Division, Stanford University, Stanford, CA 94305, USA;
| | - Henrik Salje
- Department of Genetics, Cambridge University, Cambridge CB2 3EJ, UK;
| | - Peter J. Hudson
- Center for Infectious Disease Dynamics, Pennsylvania State University, State College, PA 16801, USA;
| | - Raina K. Plowright
- Department of Microbiology and Immunology, Montana State University, Bozeman, MT 59717, USA;
| | - Emily S. Gurley
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA;
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11
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Bennett AJ, Goldberg TL. Pteropine Orthoreovirus in an Angolan Soft-Furred Fruit Bat ( Lissonycteris angolensis) in Uganda Dramatically Expands the Global Distribution of an Emerging Bat-Borne Respiratory Virus. Viruses 2020; 12:E740. [PMID: 32659960 PMCID: PMC7412351 DOI: 10.3390/v12070740] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 07/02/2020] [Accepted: 07/07/2020] [Indexed: 01/01/2023] Open
Abstract
Pteropine orthoreovirus (PRV; Reoviridae: Spinareovirinae) is an emerging bat-borne zoonotic virus that causes influenza-like illness (ILI). PRV has thus far been found only in Australia and Asia, where diverse old-world fruit bats (Pteropodidae) serve as hosts. In this study, we report the discovery of PRV in Africa, in an Angolan soft-furred fruit bat (Lissonycteris angolensis ruwenzorii) from Bundibugyo District, Uganda. Metagenomic characterization of a rectal swab yielded 10 dsRNA genome segments, revealing this virus to cluster within the known diversity of PRV variants detected in bats and humans in Southeast Asia. Phylogeographic analyses revealed a correlation between geographic distance and genetic divergence of PRVs globally, which suggests a geographic continuum of PRV diversity spanning Southeast Asia to sub-Saharan Africa. The discovery of PRV in an African bat dramatically expands the geographic range of this zoonotic virus and warrants further surveillance for PRVs outside of Southeast Asia.
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Affiliation(s)
- Andrew J. Bennett
- Department of Pathobiological Sciences, University of Wisconsin-Madison, Madison, WI 53706, USA;
| | - Tony L. Goldberg
- Department of Pathobiological Sciences, University of Wisconsin-Madison, Madison, WI 53706, USA;
- Global Health Institute, University of Wisconsin-Madison, Madison, WI 53706, USA
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12
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Almeida FC, Simmons NB, Giannini NP. A Species-Level Phylogeny of Old World Fruit Bats with a New Higher-Level Classification of the Family Pteropodidae. AMERICAN MUSEUM NOVITATES 2020. [DOI: 10.1206/3950.1] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Francisca Cunha Almeida
- Instituto de Ecología, Genética y Evolución de Buenos Aires – CONICET, Buenos Aires, Argentina
| | - Nancy B. Simmons
- Department of Mammalogy, Division of Vertebrate Zoology, American Museum of Natural History, New York
| | - Norberto P. Giannini
- Department of Mammalogy, Division of Vertebrate Zoology, American Museum of Natural History, New York
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13
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Hassanin A, Bonillo C, Tshikung D, Pongombo Shongo C, Pourrut X, Kadjo B, Nakouné E, Tu VT, Prié V, Goodman SM. Phylogeny of African fruit bats (Chiroptera, Pteropodidae) based on complete mitochondrial genomes. J ZOOL SYST EVOL RES 2020. [DOI: 10.1111/jzs.12373] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Alexandre Hassanin
- Institut Systématique Evolution Biodiversité (ISYEB) Sorbonne Université MNHN CNRS EPHE Paris France
| | - Céline Bonillo
- Muséum National d'Histoire NaturelleUMS 2700 2AD Paris France
| | - Didier Tshikung
- Faculté de Médecine Vétérinaire Université de Lubumbashi Lubumbashi Democratic Republic of the Congo
| | - Célestin Pongombo Shongo
- Faculté de Médecine Vétérinaire Université de Lubumbashi Lubumbashi Democratic Republic of the Congo
| | - Xavier Pourrut
- Institut de Recherche pour le Développement UR 224 MIVEGEC Marseille France
| | - Blaise Kadjo
- UFR Biosciences Université Félix Houphouet‐Boigny Abidjan Côte d'Ivoire
| | | | - Vuong Tan Tu
- Institute of Ecology and Biological Resources Vietnam Academy of Science and Technology Hanoi Vietnam
| | - Vincent Prié
- Institut Systématique Evolution Biodiversité (ISYEB) Sorbonne Université MNHN CNRS EPHE Paris France
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14
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Olivero J, Fa JE, Farfán MÁ, Márquez AL, Real R, Juste FJ, Leendertz SA, Nasi R. Human activities link fruit bat presence to Ebola virus disease outbreaks. Mamm Rev 2019. [DOI: 10.1111/mam.12173] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Jesús Olivero
- Grupo de Biogeografía Diversidad y Conservación Departamento de Biología Animal, Facultad de Ciencias Universidad de Málaga Campus de Teatinos s/n29071Málaga Spain
| | - Julia E. Fa
- Division of Biology and Conservation Ecology Manchester Metropolitan University Manchester M1 6BHUK
- Center for International Forestry Research (CIFOR) Jalan Cifor Rawajaha, Situ Gede, Bogor Barat Kota Bogor Jawa Barat 16115Indonesia
| | - Miguel Á. Farfán
- Grupo de Biogeografía Diversidad y Conservación Departamento de Biología Animal, Facultad de Ciencias Universidad de Málaga Campus de Teatinos s/n29071Málaga Spain
| | - Ana L. Márquez
- Grupo de Biogeografía Diversidad y Conservación Departamento de Biología Animal, Facultad de Ciencias Universidad de Málaga Campus de Teatinos s/n29071Málaga Spain
| | - Raimundo Real
- Grupo de Biogeografía Diversidad y Conservación Departamento de Biología Animal, Facultad de Ciencias Universidad de Málaga Campus de Teatinos s/n29071Málaga Spain
| | - F. Javier Juste
- Estación Biológica de Doñana CSIC C/ Américo Vespucio, 26, Isla de la Cartuja41092Sevilla Spain
- CIBER de Epidemiología y Salud Pública CIBERESP Spain
| | - Siv A. Leendertz
- Epidemiology of Highly Infectious Microorganisms Robert Koch Institute Seestrasse 1013353Berlin Germany
- Department of Infectious Disease Epidemiology Robert Koch Institute Seestrasse 1013353Berlin Germany
| | - Robert Nasi
- Center for International Forestry Research (CIFOR) Jalan Cifor Rawajaha, Situ Gede, Bogor Barat Kota Bogor Jawa Barat 16115Indonesia
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15
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Schaer J, Perkins SL, Ejotre I, Vodzak ME, Matuschewski K, Reeder DM. Epauletted fruit bats display exceptionally high infections with a Hepatocystis species complex in South Sudan. Sci Rep 2017; 7:6928. [PMID: 28761151 PMCID: PMC5537238 DOI: 10.1038/s41598-017-07093-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 06/22/2017] [Indexed: 11/14/2022] Open
Abstract
Hepatocystis parasites are closely related to mammalian Plasmodium species, the causative agents of malaria. Despite the close phylogenetic relationship, Hepatocystis parasites lack the intermittent erythrocytic replication cycles, the signature and exclusive cause of malaria-related morbidity and mortality. Hepatocystis population expansion in the mammalian host is thought to be restricted to the pre-erythrocytic liver phase. Complete differentiation of first generation blood stages into sexual stages for subsequent vector transmission indicates alternative parasite/host co-evolution. In this study, we identified a region of exceptionally high prevalence of Hepatocystis infections in Old World fruit bats in South Sudan. Investigations over the course of five consecutive surveys revealed an average of 93 percent prevalence in four genera of African epauletted fruit bats. We observed a clear seasonal pattern and tolerance of high parasite loads in these bats. Phylogenetic analyses revealed several cryptic Hepatocystis parasite species and, in contrast to mammalian Plasmodium parasites, neither host specificity nor strong geographical patterns were evident. Together, our study provides evidence for Pan-African distribution and local high endemicity of a Hepatocystis species complex in Pteropodidae.
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Affiliation(s)
- Juliane Schaer
- Max Planck Institute for Infection Biology, Parasitology Unit, Berlin, 10117, Germany. .,Museum für Naturkunde - Leibniz Institute for Research on Evolution and Biodiversity, Mammals Collections, Berlin, 10115, Germany.
| | - Susan L Perkins
- American Museum of Natural History, Sackler Institute for Comparative Genomics, New York, 10024, USA
| | - Imran Ejotre
- Humboldt University, Institute of Biology, Berlin, 10117, Germany
| | - Megan E Vodzak
- Bucknell University, Department of Biology, Lewisburg, 17837, USA.,Smithsonian Conservation Biology Institute, National Zoological Park, Washington, DC, 20008, USA
| | - Kai Matuschewski
- Max Planck Institute for Infection Biology, Parasitology Unit, Berlin, 10117, Germany.,Humboldt University, Institute of Biology, Berlin, 10117, Germany
| | - DeeAnn M Reeder
- Bucknell University, Department of Biology, Lewisburg, 17837, USA
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16
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Bat Systematics in the Light of Unconstrained Analyses of a Comprehensive Molecular Supermatrix. J MAMM EVOL 2016. [DOI: 10.1007/s10914-016-9363-8] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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17
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McKee CD, Hayman DTS, Kosoy MY, Webb CT. Phylogenetic and geographic patterns of bartonella host shifts among bat species. INFECTION, GENETICS AND EVOLUTION : JOURNAL OF MOLECULAR EPIDEMIOLOGY AND EVOLUTIONARY GENETICS IN INFECTIOUS DISEASES 2016; 44:382-394. [PMID: 27473781 PMCID: PMC5025394 DOI: 10.1016/j.meegid.2016.07.033] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 07/11/2016] [Accepted: 07/25/2016] [Indexed: 01/08/2023]
Abstract
The influence of factors contributing to parasite diversity in individual hosts and communities are increasingly studied, but there has been less focus on the dominant processes leading to parasite diversification. Using bartonella infections in bats as a model system, we explored the influence of three processes that can contribute to bartonella diversification and lineage formation: (1) spatial correlation in the invasion and transmission of bartonella among bats (phylogeography); (2) divergent adaptation of bartonellae to bat hosts and arthropod vectors; and (3) evolutionary codivergence between bats and bartonellae. Using a combination of global fit techniques and ancestral state reconstruction, we found that codivergence appears to be the dominant process leading to diversification of bartonella in bats, with lineages of bartonellae corresponding to separate bat suborders, superfamilies, and families. Furthermore, we estimated the rates at which bartonellae shift bat hosts across taxonomic scales (suborders, superfamilies, and families) and found that transition rates decrease with increasing taxonomic distance, providing support for a mechanism that can contribute to the observed evolutionary congruence between bats and their associated bartonellae. While bartonella diversification is associated with host sympatry, the influence of this factor is minor compared to the influence of codivergence and there is a clear indication that some bartonella lineages span multiple regions, particularly between Africa and Southeast Asia. Divergent adaptation of bartonellae to bat hosts and arthropod vectors is apparent and can dilute the overall pattern of codivergence, however its importance in the formation of Bartonella lineages in bats is small relative to codivergence. We argue that exploring all three of these processes yields a more complete understanding of bat-bartonella relationships and the evolution of the genus Bartonella, generally. Application of these methods to other infectious bacteria and viruses could uncover common processes that lead to parasite diversification and the formation of host-parasite relationships.
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Affiliation(s)
- Clifton D McKee
- Department of Biology, Colorado State University, Fort Collins, CO 80523, USA; Division of Vector-Borne Diseases, Centers for Disease Control and Prevention, Fort Collins, CO 80521, USA.
| | - David T S Hayman
- Molecular Epidemiology and Public Health Laboratory, Infectious Disease Research Centre, Massey University, Palmerston North 4442, New Zealand
| | - Michael Y Kosoy
- Division of Vector-Borne Diseases, Centers for Disease Control and Prevention, Fort Collins, CO 80521, USA
| | - Colleen T Webb
- Department of Biology, Colorado State University, Fort Collins, CO 80523, USA
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