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Kuo JTW, Wu T, Lucio-Forster A. Baylisascaris procyonis (Raccoon roundworm). Trends Parasitol 2024; 40:350-351. [PMID: 38151360 DOI: 10.1016/j.pt.2023.12.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 12/02/2023] [Accepted: 12/03/2023] [Indexed: 12/29/2023]
Affiliation(s)
| | - Timothy Wu
- Cornell University College of Veterinary Medicine, Ithaca, NY, USA
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Heddergott M, Lippert S, Schliephake A, Gaede W, Schleimer A, Frantz AC. Spread of the Zoonotic Nematode Baylisascaris procyonis into a Naive Raccoon Population. ECOHEALTH 2023; 20:263-272. [PMID: 37971598 PMCID: PMC10757695 DOI: 10.1007/s10393-023-01655-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 06/29/2023] [Accepted: 07/07/2023] [Indexed: 11/19/2023]
Abstract
The raccoon roundworm (Baylisascaris procyonis), a gastrointestinal nematode of the raccoon (Procyon lotor), may cause a severe form of larva migrans in humans, which can lead to death or permanent neurological damage. Although roundworms were inadvertently introduced to Europe alongside their raccoon hosts, the parasite is not present in every raccoon population. It is important to understand the geographic distribution of B. procyonis, as early and rapid treatment can prevent severe pathologies in humans. We present evidence for the roundworm spreading into a naive raccoon population through natural dispersal of infected raccoons. We sampled 181 raccoons from Saxony-Anhalt, a German federal state containing contact zones of different raccoon populations, two of which were previously free of the parasite. We screened the raccoons for roundworms and used microsatellite-based assignment tests to determine the genetic origin of the raccoons and their parasites. We detected roundworms in 16 of 45 raccoons sampled in a previously roundworm-free area in the northern part of the state. The largest proportion of the genetic ancestry (≥ 0.5) of the 16 raccoon hosts was assigned to the previously naive raccoon population. Conversely, the genetic ancestry of almost all the roundworms was assigned to the nearest roundworm population in the southern part of the state. Infected raccoons have, therefore, spread to the north of the state, where they interbred with and infected local raccoons. It seems likely that the roundworms will continue to spread. Health authorities should consider continuous surveillance programmes of naive populations and raise public awareness.
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Affiliation(s)
- Mike Heddergott
- Musée National d'Histoire Naturelle, 25 rue Muenster, L-2160, Luxembourg, Luxembourg
| | - Stéphanie Lippert
- Musée National d'Histoire Naturelle, 25 rue Muenster, L-2160, Luxembourg, Luxembourg
| | - Annette Schliephake
- Department for Veterinary Medicine, State Institute for Consumer Protection of Saxony-Anhalt, Haferbreiter Weg 132-135, 39576, Stendal, Germany
| | - Wolfgang Gaede
- Department for Veterinary Medicine, State Institute for Consumer Protection of Saxony-Anhalt, Haferbreiter Weg 132-135, 39576, Stendal, Germany
| | - Anna Schleimer
- Musée National d'Histoire Naturelle, 25 rue Muenster, L-2160, Luxembourg, Luxembourg
- Fondation Faune Flore, 24 rue Muenster, L-2160, Luxembourg, Luxembourg
| | - Alain C Frantz
- Musée National d'Histoire Naturelle, 25 rue Muenster, L-2160, Luxembourg, Luxembourg.
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3
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Sanjuán CG, Aguirre JI, Villaverde S, Banda E, Hernandez SM, Yabsley MJ. Surveillance for gastrointestinal, subcutaneous, and ectoparasites of invasive North American raccoons (Procyon lotor) in central Spain. Vet Parasitol Reg Stud Reports 2022; 36:100793. [PMID: 36436902 DOI: 10.1016/j.vprsr.2022.100793] [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: 05/08/2022] [Revised: 08/17/2022] [Accepted: 09/30/2022] [Indexed: 11/06/2022]
Abstract
The American raccoon (Procyon lotor) is an invasive meso-carnivore which has been introduced and established in many European countries. Although the presence of the raccoon in the Iberian Peninsula was confirmed around 20 years ago, there are few data on pathogens of these animals in this region. For this work, 72 American raccoons from two subpopulations in the central region of the Iberian Peninsula were examined for selected parasites. Ectoparasite species richness (both fleas and ticks) increased during the sampling season and was highest in the Henares subpopulation and on males. Similarly, ectoparasite abundance increased during the sampling season and was highest in Henares and on adult raccoons. Four species of ticks were detected including Rhipicephalus pusillus (71%), followed by R. sanguineus sensu lato (24%), Ixodes ventalloi (3%), and Dermacentor marginatus (1.4%). Four species of fleas were detected including Pulex irritans (44%), Ctenocephalides felis (3%), C. canis (1.4%), and Paraceras melis (1.4%) infestations. A subset of raccoons (n = 56) was examined for intestinal parasites; low prevalence and diversity were found including Strongyloides procyonis (4%), Dilepis sp. (5%), Plagiorchis sp. (2%), and Moniliformis moniliformis (2%). Importantly, Baylisascaris procyonis was not found. Finally, no subcutaneous nematodes (i.e., Dracunculus and Dirofilaria spp.) were found in the 56 raccoons examined. The results of this work show that the invasive North American raccoons currently are infected with few endoparasites but are commonly infested with native ectoparasites, several of which can transmit pathogens relevant for public and veterinary health. However, the geographically distinct populations of raccoons in Spain have different introduction histories, thus additional surveillance for parasites is warranted.
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Affiliation(s)
- Carlos García Sanjuán
- Departamento de Biodiversidad, Ecología y Evolución, Universidad Complutense de Madrid, Spain
| | - José I Aguirre
- Departamento de Biodiversidad, Ecología y Evolución, Universidad Complutense de Madrid, Spain
| | - Silvia Villaverde
- Centro de Recuperación de Animales Silvestres de la Comunidad de Madrid (CRAS), Tres Cantos, Madrid, Spain
| | - Eva Banda
- Departamento de Biodiversidad, Ecología y Evolución, Universidad Complutense de Madrid, Spain
| | - Sonia M Hernandez
- Southeastern Cooperative Wildlife Disease Study, Department of Population Health, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, United States of America; Warnell School of Forestry and Natural Resources, University of Georgia, Athens, GA 30602, United States of America
| | - Michael J Yabsley
- Southeastern Cooperative Wildlife Disease Study, Department of Population Health, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, United States of America; Warnell School of Forestry and Natural Resources, University of Georgia, Athens, GA 30602, United States of America; Center for the Ecology of Infectious Diseases, University of Georgia, Athens, GA 30602, United States of America.
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Juránková J, Hofmannová L, Frgelecová L, Daněk O, Modrý D. Baylisascaris transfuga (Ascaridoidea, Nematoda) from European brown bear (Ursus arctos) causing larva migrans in laboratory mice with clinical manifestation. Parasitol Res 2022; 121:645-651. [PMID: 34984542 DOI: 10.1007/s00436-021-07417-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 12/22/2021] [Indexed: 11/26/2022]
Abstract
Due to the recent recovery of brown bear populations in Central Europe, information about their ascarid parasite, Baylisascaris transfuga is necessary as the parasite represents a part of natural ecological networks. B. transfuga can lead to larva migrans syndrome in accidental hosts, but its zoonotic potential has not been confirmed. The resent study compares development of larva migrans in infected mice inoculated with two infectious doses (ID 200 and ID 2000) of B. transfuga embryonated eggs, and the clinical manifestation to evaluate the pathogenicity of the larvae. Histopathology revealed that the liver was the most severely infected organ. The moderately infected organs included lung, brain, skeletal muscles and jejunum and the less infected ones were the eyes, heart, kidneys and spleen. The high pathogenicity of B. transfuga to mice was reflected in high mortality (33,3%) after infection, with mortality increasing with higher infectious dose. The results extend the knowledge of the interaction of B. transfuga and its aberrant hosts and contribute to the understanding of the epidemiology and transmission of this bears roundworm.
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Affiliation(s)
- Jana Juránková
- Department of Pathology and Parasitology, University of Veterinary Sciences Brno, Palackého 1946/1, 612 42, Brno, Czech Republic.
| | - Lada Hofmannová
- Department of Pathology and Parasitology, University of Veterinary Sciences Brno, Palackého 1946/1, 612 42, Brno, Czech Republic
- Department of Pathology and Parasitology, State Veterinary Institute Prague, Sídlištní 136/24, Prague 6, 165 03, Czech Republic
| | - Lucia Frgelecová
- Department of Pathology and Parasitology, University of Veterinary Sciences Brno, Palackého 1946/1, 612 42, Brno, Czech Republic
| | - Ondřej Daněk
- Department of Pathology and Parasitology, University of Veterinary Sciences Brno, Palackého 1946/1, 612 42, Brno, Czech Republic
| | - David Modrý
- Department of Pathology and Parasitology, University of Veterinary Sciences Brno, Palackého 1946/1, 612 42, Brno, Czech Republic
- Biology Centre, Institute of Parasitology, Czech Academy of Sciences, Branišovská 31, 370 05, České Budějovice, Czech Republic
- Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlářská 2, 611 37, Brno, Czech Republic
- Department of Veterinary Sciences, Faculty of Agrobiology, Food and Natural Resources/CINeZ, Czech University of Life Sciences Prague, Prague, Czech Republic
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Morelli S, Diakou A, Di Cesare A, Colombo M, Traversa D. Canine and Feline Parasitology: Analogies, Differences, and Relevance for Human Health. Clin Microbiol Rev 2021; 34:e0026620. [PMID: 34378954 PMCID: PMC8404700 DOI: 10.1128/cmr.00266-20] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Cats and dogs are treated as family members by most pet owners. Therefore, a high quality of veterinary care and preventive medicine is imperative for animal health and welfare and for the protection of humans from zoonotic pathogens. There is a general perception of cats being treated as "small dogs," especially in the field of clinical parasitology. As a result, several important differences between the two animal species are not taken into proper consideration and are often overlooked. Dogs and cats are profoundly different under evolutionary, biological, ethological, behavioral, and immunological standpoints. These differences impact clinical features, diagnosis, and control of canine and feline parasites and transmission risk for humans. This review outlines the most common parasitoses and vector-borne diseases of dogs and cats, with a focus on major convergences and divergences, and discusses parasites that have (i) evolved based on different preys for dogs and cats, (ii) adapted due to different immunological or behavioral animal profiles, and (iii) developed more similarities than differences in canine and feline infections and associated diseases. Differences, similarities, and peculiarities of canine and feline parasitology are herein reviewed in three macrosections: (i) carnivorism, vegetarianism, anatomy, genetics, and parasites, (ii) evolutionary adaptation of nematodes, including veterinary reconsideration and zoonotic importance, and (iii) behavior and immune system driving ectoparasites and transmitted diseases. Emphasis is given to provide further steps toward a more accurate evaluation of canine and feline parasitology in a changing world in terms of public health relevance and One Health approach.
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Affiliation(s)
- Simone Morelli
- Faculty of Veterinary Medicine, University of Teramo, Teramo, Italy
| | - Anastasia Diakou
- Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Angela Di Cesare
- Faculty of Veterinary Medicine, University of Teramo, Teramo, Italy
| | | | - Donato Traversa
- Faculty of Veterinary Medicine, University of Teramo, Teramo, Italy
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Maas M, Tatem-Dokter R, Rijks JM, Dam-Deisz C, Franssen F, van Bolhuis H, Heddergott M, Schleimer A, Schockert V, Lambinet C, Hubert P, Redelijk T, Janssen R, Cruz APL, Martinez IC, Caron Y, Linden A, Lesenfants C, Paternostre J, van der Giessen J, Frantz AC. Population genetics, invasion pathways and public health risks of the raccoon and its roundworm Baylisascaris procyonis in northwestern Europe. Transbound Emerg Dis 2021; 69:2191-2200. [PMID: 34227236 DOI: 10.1111/tbed.14218] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 06/30/2021] [Accepted: 07/01/2021] [Indexed: 12/01/2022]
Abstract
The geographic range of the zoonotic raccoon roundworm (Baylisascaris procyonis) is expanding together with the range of its host, the raccoon (Procyon lotor). This creates a new public health risk in parts of Europe where this parasite was previously absent. In the Netherlands, a raccoon population is becoming established and incidental findings of B. procyonis have been reported. To assess the risk to public health, the prevalence of B. procyonis was determined in the province of Limburg, where currently the largest Dutch raccoon population is present, as well as in the adjoining region of southern Belgium. Furthermore, genetic methods were employed to assess invasion pathways of both the raccoon and B. procyonis to aid in the development of control measures. Macroscopic analysis of intestinal content and testing of faecal samples were performed to detect B. procyonis adults and eggs. The population genetics of both B. procyonis and its raccoon host were analysed using samples from central and northwestern Europe. B. procyonis was found in 14/23 (61%, 95% CI: 41%-78%) raccoons from Limburg, but was not detected in 50 Belgian raccoons. Genetic analyses showed that the majority of the Dutch raccoons and their roundworms were introduced through ex-captive individuals. As long as free-living raccoon populations originate from captivity, population control methods may be pursued. However, natural dispersal from the border regions will complicate prolonged population control. To reduce the public health risk posed by B. procyonis, public education to increase awareness and adapt behaviour towards raccoons is key.
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Affiliation(s)
- Miriam Maas
- Centre for Infectious Disease Control (CIb), National Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands
| | - Rea Tatem-Dokter
- Centre for Infectious Disease Control (CIb), National Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands
| | - Jolianne M Rijks
- Dutch Wildlife Health Centre (DWHC), Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
| | - Cecile Dam-Deisz
- Centre for Infectious Disease Control (CIb), National Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands
| | - Frits Franssen
- Centre for Infectious Disease Control (CIb), National Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands
| | | | | | - Anna Schleimer
- Musée National d'Histoire Naturelle, Luxembourg, Luxembourg
| | - Vinciane Schockert
- Unité de Recherches zoogéographiques, Département de Biologie, Ecologie et Evolution, Faculté des Sciences, Université de Liège, Liège, Belgium
| | - Clotilde Lambinet
- Unité de Recherches zoogéographiques, Département de Biologie, Ecologie et Evolution, Faculté des Sciences, Université de Liège, Liège, Belgium
| | - Pauline Hubert
- Centre de Recherche et de Formation en Éco-éthologie, Université de Reims Champagne-Ardenne, Boult-aux-Bois, France
| | | | | | | | - Irène Campos Martinez
- Unité de Recherches zoogéographiques, Département de Biologie, Ecologie et Evolution, Faculté des Sciences, Université de Liège, Liège, Belgium
| | - Yannick Caron
- Parasitologie et Pathologie des Maladies Parasitaires, Département des Maladies infectieuses et parasitaires, Faculté de Médecine Vétérinaire, Université de Liège, Liège, Belgium
| | - Annick Linden
- Service de Santé et Pathologie de la Faune sauvage, Département des Maladies infectieuses et parasitaires, Faculté de Médecine Vétérinaire, Université de Liège, Liège, Belgium
| | - Christophe Lesenfants
- Service de Santé et Pathologie de la Faune sauvage, Département des Maladies infectieuses et parasitaires, Faculté de Médecine Vétérinaire, Université de Liège, Liège, Belgium
| | - Julien Paternostre
- Service de Santé et Pathologie de la Faune sauvage, Département des Maladies infectieuses et parasitaires, Faculté de Médecine Vétérinaire, Université de Liège, Liège, Belgium
| | - Joke van der Giessen
- Centre for Infectious Disease Control (CIb), National Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands
| | - Alain C Frantz
- Musée National d'Histoire Naturelle, Luxembourg, Luxembourg
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7
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Carlson CR, Schutz CL, Pagan C, Camp LE, Nadler SA. PHYLOGEOGRAPHY OF BAYLISASCARIS PROCYONIS (RACCOON ROUNDWORM) IN NORTH AMERICA. J Parasitol 2021; 107:411-420. [PMID: 34030177 DOI: 10.1645/21-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Sequences of the mitochondrial cytochrome c oxidase 1 (COI) gene of 115 Baylisascaris procyonis individuals from 13 U.S. states and 1 Canadian province were obtained from 44 raccoon hosts to assess genetic variation and geographic structure. The maximum genetic distance between individuals was low (1.6%), consistent with a single species. Moderate COI haplotype (h = 0.60) and nucleotide (π = 0.0053) diversity were found overall. Low haplotype diversity was found among samples east of the Mississippi River (h = 0.036), suggesting that historical growth and expansion of raccoon populations in this region could be responsible for high parasite gene flow or a selective sweep of B. procyonis mtDNA. There was low genetic structure (average Φst = 0.07) for samples east of the continental divide, but samples from Colorado showed higher diversity and differentiation from midwestern and eastern samples. There was marked genetic structure between samples from east and west of the continental divide, with no haplotypes shared between these regions. There was no significant isolation by distance among any of these geographic samples. The phylogeographic patterns for B. procyonis are similar to genetic results reported for their raccoon definitive hosts. The phylogeographic divergence of B. procyonis from east and west of the continental divide may involve vicariance resulting from Pleistocene glaciation and associated climate variation.
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Affiliation(s)
- Curtis R Carlson
- Department of Entomology and Nematology, University of California Davis, Davis, California 95616
| | - Cora L Schutz
- Department of Entomology and Nematology, University of California Davis, Davis, California 95616
| | - Christopher Pagan
- Department of Entomology and Nematology, University of California Davis, Davis, California 95616
| | - Lauren E Camp
- Department of Entomology and Nematology, University of California Davis, Davis, California 95616
| | - Steven A Nadler
- Department of Entomology and Nematology, University of California Davis, Davis, California 95616
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Russell RE, DiRenzo GV, Szymanski JA, Alger KE, Grant EHC. Principles and Mechanisms of Wildlife Population Persistence in the Face of Disease. Front Ecol Evol 2020. [DOI: 10.3389/fevo.2020.569016] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Pilny AA, Reavill D. Emerging and Re-emerging Diseases of Selected Avian Species. Vet Clin North Am Exot Anim Pract 2020; 23:429-441. [PMID: 32327046 DOI: 10.1016/j.cvex.2020.01.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Emerging infections and re-emerging diseases in birds can be caused by numerous factors and need to be recognized and understood. This article introduces and summarizes author-selected emerging and re-emerging diseases of avian species. These diseases hold significance as they relate to scientific research, disease recognition and identification, avian welfare aspects, and ecosystem health. Some are significant in human health and others affect production medicine. These and many others remain important pathogens of worldwide consequence.
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Affiliation(s)
- Anthony A Pilny
- Arizona Exotic Animal Hospital, 20040 N 19th Avenue Suite C, Phoenix, AZ 85027, USA.
| | - Drury Reavill
- ZNLabs, 525 E 4500 South Suite F200, Salt Lake City, UT 84107, USA
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10
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Yan X, Owens JR, Wen Y, Su X, Wang Z, Liu S, Zhang D, Callan R, Wenlei B, Qi D, Spotila JR, Hou R, Zhang Z. Dogs and Disease Threats to Giant Pandas in China. J Wildl Manage 2020. [DOI: 10.1002/jwmg.21786] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xia Yan
- Sichuan Key Laboratory of Conservation Biology for Endangered WildlifeChengdu Research Base of Giant Panda Breeding Chengdu Sichuan 610081 P.R. China
| | - Jacob R. Owens
- Sichuan Key Laboratory of Conservation Biology for Endangered WildlifeChengdu Research Base of Giant Panda Breeding Chengdu Sichuan 610081 P.R. China
| | - Yiping Wen
- Sichuan Agriculture University Chengdu Sichuan 610081 P.R. China
| | - Xiaoyan Su
- Sichuan Key Laboratory of Conservation Biology for Endangered WildlifeChengdu Research Base of Giant Panda Breeding Chengdu Sichuan 610081 P.R. China
| | - Zhenghao Wang
- Sichuan Agriculture University Chengdu Sichuan 610081 P.R. China
| | - Songrui Liu
- Sichuan Key Laboratory of Conservation Biology for Endangered WildlifeChengdu Research Base of Giant Panda Breeding Chengdu Sichuan 610081 P.R. China
| | - Dongsheng Zhang
- Sichuan Key Laboratory of Conservation Biology for Endangered WildlifeChengdu Research Base of Giant Panda Breeding Chengdu Sichuan 610081 P.R. China
| | - Ramana Callan
- Sichuan Key Laboratory of Conservation Biology for Endangered WildlifeChengdu Research Base of Giant Panda Breeding Chengdu Sichuan 610081 P.R. China
| | - Bi Wenlei
- Sichuan Key Laboratory of Conservation Biology for Endangered WildlifeChengdu Research Base of Giant Panda Breeding Chengdu Sichuan 610081 P.R. China
| | - Dunwu Qi
- Sichuan Key Laboratory of Conservation Biology for Endangered WildlifeChengdu Research Base of Giant Panda Breeding Chengdu Sichuan 610081 P.R. China
| | - James R. Spotila
- Department of Biodiversity, Earth and Environmental ScienceDrexel University Philadelphia PA 19104 USA
| | - Rong Hou
- Sichuan Key Laboratory of Conservation Biology for Endangered WildlifeChengdu Research Base of Giant Panda Breeding Chengdu Sichuan 610081 P.R. China
| | - Zhihe Zhang
- Sichuan Key Laboratory of Conservation Biology for Endangered WildlifeChengdu Research Base of Giant Panda Breeding Chengdu Sichuan 610081 P.R. China
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11
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Otranto D, Deplazes P. Zoonotic nematodes of wild carnivores. Int J Parasitol Parasites Wildl 2019; 9:370-383. [PMID: 31338295 PMCID: PMC6626844 DOI: 10.1016/j.ijppaw.2018.12.011] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 12/29/2018] [Accepted: 12/31/2018] [Indexed: 12/15/2022]
Abstract
For a long time, wildlife carnivores have been disregarded for their potential in transmitting zoonotic nematodes. However, human activities and politics (e.g., fragmentation of the environment, land use, recycling in urban settings) have consistently favoured the encroachment of urban areas upon wild environments, ultimately causing alteration of many ecosystems with changes in the composition of the wild fauna and destruction of boundaries between domestic and wild environments. Therefore, the exchange of parasites from wild to domestic carnivores and vice versa have enhanced the public health relevance of wild carnivores and their potential impact in the epidemiology of many zoonotic parasitic diseases. The risk of transmission of zoonotic nematodes from wild carnivores to humans via food, water and soil (e.g., genera Ancylostoma, Baylisascaris, Capillaria, Uncinaria, Strongyloides, Toxocara, Trichinella) or arthropod vectors (e.g., genera Dirofilaria spp., Onchocerca spp., Thelazia spp.) and the emergence, re-emergence or the decreasing trend of selected infections is herein discussed. In addition, the reasons for limited scientific information about some parasites of zoonotic concern have been examined. A correct compromise between conservation of wild carnivores and risk of introduction and spreading of parasites of public health concern is discussed in order to adequately manage the risk of zoonotic nematodes of wild carnivores in line with the 'One Health' approach.
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Affiliation(s)
- Domenico Otranto
- Dipartimento di Medicina Veterinaria, Universita’ degli Studi di Bari, 70010, Valenzano, Italy
| | - Peter Deplazes
- Institute of Parasitology, University of Zürich, 8057, Zürich, Switzerland
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12
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Sapp SGH, Handali S, Weinstein SB, Yabsley MJ. Detection and Evaluation of Antibody Response to a Baylisascaris-Specific Antigen in Rodent Hosts with the Use of Western Blotting and Elisa. J Parasitol 2018; 104:651-659. [PMID: 30074878 DOI: 10.1645/18-48] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Diagnosis of parasitic diseases that involve tissue-stage larvae is challenging, and serology remains the most effective antemortem test for detecting these infections. Baylisascaris procyonis, the raccoon roundworm, is a zoonotic ascarid. Raccoons are the usual definitive host, and humans may be infected as accidental hosts. More than 150 species of birds and mammals may act as paratenic hosts, and rodents play an important role in the transmission and maintenance of this parasite in nature. Migratory larvae in paratenic host tissues can produce ocular disease and severe to fatal neurologic disease, but not all infected hosts develop signs. A sensitive and specific Western blot (WB) assay based on a recombinant Baylisascaris-specific antigen (rBpRAG-1) has been developed for use in humans. We evaluated the use of this antigen to detect Baylisascaris spp. infections in rodent paratenic hosts. With the use of 4 species of Peromyscus mice ( Peromyscus californicus, Peromyscus leucopus, Peromyscus maniculatus, Peromyscus polionotus) from a previous infection trial, we developed species-adapted WB and ELISA assays and evaluated performance compared to detection of larvae in tissue samples. These assays revealed species-level differences in seroconversion and terminal antibody concentrations, with P. leucopus developing significantly greater antibody concentrations than P. californicus and P. polionotus at all dose levels, and P. maniculatus at the low dose. Some P. californicus and P. polionotus failed to seroconvert despite the recovery of larvae from their tissues. WB and ELISA results were correlated; however, the WB demonstrated higher sensitivity than the ELISA overall (72.2% versus 63.9%, respectively). With the use of experimental samples, specificity was 100% for WB and 94.1% for ELISA. A WB was also used to test Mus and Rattus samples, and although numbers were too limited to evaluate sensitivity and specificity, all animals known to be infected by tissue digestion were WB positive, and all uninfected animals were negative. Finally, the Peromyscus-adapted WB and ELISA were used to test a set of serum samples from wild-trapped P. maniculatus and Rattus rattus. Both assays were generally sensitive, but specificity was equivocal. This emphasizes the challenge of using serology for investigation of wildlife diseases, in which hosts have unknown exposure histories. Nevertheless, serologic methods have utility in the study of Baylisascaris spp. in paratenic hosts, either wild or captive, and have advantageous attributes (non-lethal, high-throughput), but results should be interpreted carefully.
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Affiliation(s)
- Sarah G H Sapp
- 1 Southeastern Cooperative Wildlife Disease Study, Department of Population Health, University of Georgia, College of Veterinary Medicine, 589 DW Brooks Drive, Athens, Georgia 30602.,2 Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, Georgia 30602
| | - Sukwan Handali
- 3 Parasitic Diseases Branch, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia 30329
| | - Sara B Weinstein
- 4 Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, California 93106
| | - Michael J Yabsley
- 1 Southeastern Cooperative Wildlife Disease Study, Department of Population Health, University of Georgia, College of Veterinary Medicine, 589 DW Brooks Drive, Athens, Georgia 30602.,5 Warnell School of Forestry and Natural Resources, University of Georgia, Athens, Georgia 30602
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13
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Weinstein SB, Moura CW, Mendez JF, Lafferty KD. Fear of feces? Tradeoffs between disease risk and foraging drive animal activity around raccoon latrines. OIKOS 2018. [DOI: 10.1111/oik.04866] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Sara B. Weinstein
- Dept of Ecology, Evolution and Marine Biology Univ. of California Santa Barbara CA 93106 USA
| | - Chad W. Moura
- Dept of Ecology, Evolution and Marine Biology Univ. of California Santa Barbara CA 93106 USA
| | - Jon Francis Mendez
- Dept of Ecology, Evolution and Marine Biology Univ. of California Santa Barbara CA 93106 USA
| | - Kevin D. Lafferty
- Dept of Ecology, Evolution and Marine Biology Univ. of California Santa Barbara CA 93106 USA
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14
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Osten-Sacken N, Heddergott M, Schleimer A, Anheyer-Behmenburg HE, Runge M, Horsburgh GJ, Camp L, Nadler SA, Frantz AC. Similar yet different: co-analysis of the genetic diversity and structure of an invasive nematode parasite and its invasive mammalian host. Int J Parasitol 2017; 48:233-243. [PMID: 29102623 DOI: 10.1016/j.ijpara.2017.08.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 08/24/2017] [Accepted: 08/31/2017] [Indexed: 01/13/2023]
Abstract
Animal parasitic nematodes can cause serious diseases and their emergence in new areas can be an issue of major concern for biodiversity conservation and human health. Their ability to adapt to new environments and hosts is likely to be affected by their degree of genetic diversity, with gene flow between distinct populations counteracting genetic drift and increasing effective population size. The raccoon roundworm (Baylisascaris procyonis), a gastrointestinal parasite of the raccoon (Procyon lotor), has increased its global geographic range after being translocated with its host. The raccoon has been introduced multiple times to Germany, but not all its populations are infected with the parasite. While fewer introduced individuals may have led to reduced diversity in the parasite, admixture between different founder populations may have counteracted genetic drift and bottlenecks. Here, we analyse the population genetic structure of the roundworm and its raccoon host at the intersection of distinct raccoon populations infected with B. procyonis. We found evidence for two parasite clusters resulting from independent introductions. Both clusters exhibited an extremely low genetic diversity, suggesting small founding populations subjected to inbreeding and genetic drift with no, or very limited, genetic influx from population admixture. Comparison of the population genetic structures of both host and parasite suggested that the parasite spread to an uninfected raccoon founder population. On the other hand, an almost perfect match between cluster boundaries also suggested that the population genetic structure of B. procyonis has remained stable since its introduction, mirroring that of its raccoon host.
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Affiliation(s)
- Natalia Osten-Sacken
- Musée National d, Histoire Naturelle, 25 rue Muenster, L-2160 Luxembourg, Luxembourg; Fondation Faune-Flore, 25 rue Muenster, L-2160 Luxembourg, Luxembourg
| | - Mike Heddergott
- Musée National d, Histoire Naturelle, 25 rue Muenster, L-2160 Luxembourg, Luxembourg
| | - Anna Schleimer
- Musée National d, Histoire Naturelle, 25 rue Muenster, L-2160 Luxembourg, Luxembourg
| | - Helena E Anheyer-Behmenburg
- Lower Saxony State Office for Consumer Protection and Food Safety, Food and Veterinary Institute Braunschweig/Hannover, Eintrachtweg 17, D-30173 Hannover, Germany
| | - Martin Runge
- Lower Saxony State Office for Consumer Protection and Food Safety, Food and Veterinary Institute Braunschweig/Hannover, Eintrachtweg 17, D-30173 Hannover, Germany
| | - Gavin J Horsburgh
- NERC Biomolecular Analysis Facility, Department of Animal and Plant Sciences, University of Sheffield, Western Bank, Sheffield S10 2TN, UK
| | - Lauren Camp
- Department of Entomology and Nematology, University of California, One Shields Avenue, Davis, CA 95616-8668, USA
| | - Steven A Nadler
- Department of Entomology and Nematology, University of California, One Shields Avenue, Davis, CA 95616-8668, USA
| | - Alain C Frantz
- Musée National d, Histoire Naturelle, 25 rue Muenster, L-2160 Luxembourg, Luxembourg.
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15
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Al-Warid HS, Belsare AV, Straka K, Gompper ME. Baylisascaris procyonis roundworm infection patterns in raccoons (Procyon lotor) from Missouri and Arkansas, USA. Helminthologia 2017. [DOI: 10.1515/helm-2017-0011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Summary
Baylisascaris procyonis is a helminth parasite of raccoons Procyon lotor and represents a health concern in paratenic hosts, including humans and diverse domestic and wildlife species. In North America the helminth is expanding its geographic range. To better understand patterns of infection in the Ozark region of the USA, raccoons (n = 61) were collected in 2013-2014 from five counties in Missouri and Arkansas, USA and necropsied. We documented B. procyonis in all surveyed locations. The overall prevalence of B. procyonis was 44.3 % (95 % CI = 31.9 - 57.4) and was significantly higher in females than males. There were also significant differences in prevalence among raccoons sampled north and south of the Missouri River. Mean intensity was 9.9 (CI = 5.44 - 17.22), and parasites were highly aggregated among hosts such that approximately 20 % of hosts harbor 90 % of parasites. These levels of parasitism indicate that B. procyonis is common in the region and its impacts on paratenic hosts could be qualitatively similar to effects observed in other localities.
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Affiliation(s)
- H. S. Al-Warid
- School of Natural Resources, University of Missouri, 302 Anheuser-Busch Natural Resources Building , Columbia , MO 65211, USA
- Division of Biological Sciences, University of Missouri, 405A Tucker Hall , Columbia , MO 65211, USA
- Department of Biology, College of Science, University of Baghdad Al-Jadriyah, Baghdad , Iraq
| | - A. V. Belsare
- School of Natural Resources, University of Missouri, 302 Anheuser-Busch Natural Resources Building , Columbia , MO 65211, USA
| | - K. Straka
- Missouri Department of Conservation, Resource Science Center, 3500 East Gans Road , Columbia , MO 65201, USA
| | - M. E. Gompper
- School of Natural Resources, University of Missouri, 302 Anheuser-Busch Natural Resources Building , Columbia , MO 65211, USA
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16
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Weinstein SB. Baylisascaris procyonisDemography and Egg Production in a California Raccoon Population. J Parasitol 2016; 102:622-628. [DOI: 10.1645/15-747] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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17
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Sapp SGH, Weinstein SB, McMahan CS, Yabsley MJ. Variable Infection Dynamics in Four Peromyscus Species Following Experimental Inoculation with Baylisascaris procyonis. J Parasitol 2016; 102:538-544. [DOI: 10.1645/16-57] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Sarah G. H. Sapp
- Southeastern Cooperative Wildlife Disease Study, University of Georgia, College of Veterinary Medicine, 589 DW Brooks Dr., Athens, Georgia 30602. Correspondence should be sent to:
| | | | | | - Michael J. Yabsley
- Southeastern Cooperative Wildlife Disease Study, University of Georgia, College of Veterinary Medicine, 589 DW Brooks Dr., Athens, Georgia 30602. Correspondence should be sent to:
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18
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Cerebral Larva Migrans Caused by Baylisascaris spp. in a Free-ranging North American Porcupine ( Erethizon dorsatum ). J Wildl Dis 2016; 52:763-5. [PMID: 27314480 DOI: 10.7589/2015-11-316] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A free-ranging North American porcupine ( Erethizon dorsatum ) from Utah, US, exhibited neurologic symptoms and was submitted for necropsy. Histologic examination of the brain revealed severe encephalitis with an intralesional nematode larva consistent with Baylisascaris spp. Neurologic larva migrans had not been reported in free-ranging porcupines, or from wildlife in Utah.
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19
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THE STRUCTURE AND SEASONALITY OF BAYLISASCARIS PROCYONIS POPULATIONS IN RACCOONS (PROCYON LOTOR). J Wildl Dis 2016; 52:286-92. [DOI: 10.7589/2015-06-153] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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20
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Graeff-Teixeira C, Morassutti AL, Kazacos KR. Update on Baylisascariasis, a Highly Pathogenic Zoonotic Infection. Clin Microbiol Rev 2016; 29:375-99. [PMID: 26960940 PMCID: PMC4786883 DOI: 10.1128/cmr.00044-15] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Baylisascaris procyonis, the raccoon roundworm, infects a wide range of vertebrate animals, including humans, in which it causes a particularly severe type of larva migrans. It is an important cause of severe neurologic disease (neural larva migrans [NLM]) but also causes ocular disease (OLM; diffuse unilateral subacute neuroretinitis [DUSN]), visceral larva migrans (VLM), and covert/asymptomatic infections. B. procyonis is common and widespread in raccoons, and there is increasing recognition of human disease, making a clinical consideration of baylisascariasis important. This review provides an update for this disease, especially its clinical relevance and diagnosis, and summarizes the clinical cases of human NLM and VLM known to date. Most diagnosed patients have been young children less than 2 years of age, although the number of older patients diagnosed in recent years has been increasing. The recent development of recombinant antigen-based serodiagnostic assays has aided greatly in the early diagnosis of this infection. Patients recovering with fewer severe sequelae have been reported in recent years, reinforcing the current recommendation that early treatment with albendazole and corticosteroids should be initiated at the earliest suspicion of baylisascariasis. Considering the seriousness of this zoonotic infection, greater public and medical awareness is critical for the prevention and early treatment of human cases.
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Affiliation(s)
- Carlos Graeff-Teixeira
- Faculdade de Biociências and Instituto de Pesquisas Biomédicas, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Alessandra Loureiro Morassutti
- Faculdade de Biociências and Instituto de Pesquisas Biomédicas, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Kevin R Kazacos
- Department of Comparative Pathobiology, Purdue University College of Veterinary Medicine, West Lafayette, Indiana, USA
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21
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Sarkissian CA, Campbell SK, Dharmarajan G, Jacquot J, Page LK, Graham DH. Microgeographic Population Genetic Structure of Baylisascaris procyonis (Nematoda: Ascaroidae) in Western Michigan Indicates the Grand River Is a Barrier to Gene Flow. J Parasitol 2015; 101:671-6. [DOI: 10.1645/15-767] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
| | | | | | | | | | - Douglas H. Graham
- Department of Biomedical Sciences, Grand Valley State University, 1 Campus Dr., Allendale, Michigan 49401. Correspondence should be sent to:
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22
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Baylisascaris procyonis in wild raccoons (Procyon lotor) in Denmark. VETERINARY PARASITOLOGY- REGIONAL STUDIES AND REPORTS 2015; 1-2:55-58. [DOI: 10.1016/j.vprsr.2016.03.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 02/26/2016] [Accepted: 03/01/2016] [Indexed: 11/20/2022]
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23
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EVALUATION OF ANTHELMINTIC FISHMEAL POLYMER BAITS FOR THE CONTROL OF BAYLISASCARIS PROCYONIS IN FREE-RANGING RACCOONS (PROCYON LOTOR). J Wildl Dis 2015; 51:640-50. [DOI: 10.7589/2014-09-236] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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24
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Weinstein SB, Lafferty KD. How do humans affect wildlife nematodes? Trends Parasitol 2015; 31:222-7. [DOI: 10.1016/j.pt.2015.01.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2014] [Revised: 12/14/2014] [Accepted: 01/16/2015] [Indexed: 11/30/2022]
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25
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26
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SURVEILLANCE FORBAYLISASCARIS PROCYONISIN RACCOONS (PROCYON LOTOR) FROM WYOMING, USA. J Wildl Dis 2014; 50:777-83. [DOI: 10.7589/2013-10-263] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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27
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Predicting Baylisascaris procyonis roundworm prevalence, presence and abundance in raccoons (Procyon lotor) of southwestern Ohio using landscape features. INTERNATIONAL JOURNAL FOR PARASITOLOGY-PARASITES AND WILDLIFE 2014; 3:113-7. [PMID: 25161909 PMCID: PMC4142262 DOI: 10.1016/j.ijppaw.2014.05.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2014] [Revised: 05/22/2014] [Accepted: 05/23/2014] [Indexed: 11/24/2022]
Abstract
We discovered that roundworm prevalence varies between adjacent sample sites. Landscape features serve as good predictors of parasite presence, prevalence and abundance. The proportion of landscape modified by agriculture predicts Baylisascaris procyonis prevalence better than any feature.
Raccoon roundworm is a leading cause of a neurological disease known as larva migrans encephalopathy in vertebrates. We determined that roundworm prevalence is significantly lower in Beavercreek Township than other townships surveyed, and that mean patch size and proportion of landscape modified by urbanization or by agriculture are good predictors of roundworm prevalence and abundance in raccoons. The proportion of landscape modified by urbanization was the best predictor of roundworm presence. These data will facilitate predictions regarding roundworm prevalence in areas that have not been previously sampled, and contribute to devising management strategies against the spread of raccoon roundworm.
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Exploiting parallels between livestock and wildlife: Predicting the impact of climate change on gastrointestinal nematodes in ruminants. INTERNATIONAL JOURNAL FOR PARASITOLOGY-PARASITES AND WILDLIFE 2014; 3:209-19. [PMID: 25197625 PMCID: PMC4152262 DOI: 10.1016/j.ijppaw.2014.01.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Revised: 12/21/2013] [Accepted: 01/28/2014] [Indexed: 11/21/2022]
Abstract
Global change, including climate, policy, land use and other associated environmental changes, is likely to have a major impact on parasitic disease in wildlife, altering the spatio-temporal patterns of transmission, with wide-ranging implications for wildlife, domestic animals, humans and ecosystem health. Predicting the potential impact of climate change on parasites infecting wildlife will become increasingly important in the management of species of conservation concern and control of disease at the wildlife-livestock and wildlife-human interface, but is confounded by incomplete knowledge of host-parasite interactions, logistical difficulties, small sample sizes and limited opportunities to manipulate the system. By exploiting parallels between livestock and wildlife, existing theoretical frameworks and research on livestock and their gastrointestinal nematodes can be adapted to wildlife systems. Similarities in the gastrointestinal nematodes and the life-histories of wild and domestic ruminants, coupled with a detailed knowledge of the ecology and life-cycle of the parasites, render the ruminant-GIN host-parasite system particularly amenable to a cross-disciplinary approach.
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29
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Thompson RCA. Parasite zoonoses and wildlife: One Health, spillover and human activity. Int J Parasitol 2013; 43:1079-88. [PMID: 23892130 PMCID: PMC7126848 DOI: 10.1016/j.ijpara.2013.06.007] [Citation(s) in RCA: 187] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Revised: 06/21/2013] [Accepted: 06/22/2013] [Indexed: 01/16/2023]
Abstract
This review examines parasite zoonoses and wildlife in the context of the One Health triad that encompasses humans, domestic animals, wildlife and the changing ecosystems in which they live. Human (anthropogenic) activities influence the flow of all parasite infections within the One Health triad and the nature and impact of resulting spillover events are examined. Examples of spillover from wildlife to humans and/or domestic animals, and vice versa, are discussed, as well as emerging issues, particularly the need for parasite surveillance of wildlife populations. Emphasis is given to Trypanosoma cruzi and related species in Australian wildlife, Trichinella, Echinococcus, Giardia, Baylisascaris, Toxoplasma and Leishmania.
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Affiliation(s)
- R C Andrew Thompson
- School of Veterinary and Health Sciences, Murdoch University, Murdoch, WA 6150, Australia.
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