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Moroni B, Albanese F, Rita Molinar Min A, Pasquetti M, Guillot J, Pisano SRR, Ryser-Degiorgis MP, Rüfenacht S, Gauthier D, Cano-Terriza D, Scaravelli D, Rossi L, Peano A. Sarcoptic mange in Felidae: does Sarcoptes scabiei var. felis exist? A first molecular study. Parasite 2023; 30:11. [PMID: 37010452 PMCID: PMC10069400 DOI: 10.1051/parasite/2023012] [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: 12/02/2022] [Accepted: 03/13/2023] [Indexed: 04/04/2023] Open
Abstract
Domestic and wild felids are considered suitable hosts for the parasitic mite Sarcoptes scabiei, and sarcoptic mange is reported in several felid species in the scientific literature. However, the historic classification of Sarcoptes mites into host-specific varieties does not include S. scabiei var. felis. It is unclear whether sarcoptic mange transmission in felids involves canids, other sympatric species, or exclusively felids. This study aimed to characterize the genetic structure of S. scabiei mites from domestic cats (Felis catus) and Eurasian lynx (Lynx lynx carpathicus), comparing them with Sarcoptes mites from sympatric domestic and wild carnivores. Ten Sarcoptes microsatellite markers were used to genotype 81 mites obtained from skin scrapings of 36 carnivores: 4 domestic cats, one dog (Canis lupus familiaris), 4 Eurasian lynx, 23 red foxes (Vulpes vulpes), and 4 grey wolves (Canis lupus lupus) from either Italy, Switzerland or France. Two genetic clusters of S. scabiei with a geographical distribution pattern were detected: mites from cats originating from Central Italy clustered with those from sympatric wolves. In contrast, all the other mites from Switzerland, France and Northern Italy clustered together. These results strengthen the previously advanced hypothesis that genetic variants of S. scabiei have a predominant geographic-related distribution with cryptic transmission patterns. These patterns may rely on the interactions between different hosts living in the same ecological niche rather than a simple infection among hosts belonging to the same taxon, reinforcing the idea that the S. scabiei historic classification into "var" might have little ongoing relevance.
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Affiliation(s)
- Barbara Moroni
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Department of Veterinary Sciences, University of Turin Largo Braccini 2 10095 Grugliasco Italy
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Istituto Zooprofilattico Sperimentale del Piemonte Liguria e Val d’Aosta, Via Bologna 148 10154 Torino Italy
| | - Francesco Albanese
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Centro Dermatologico Veterinario Toscano Via Romana, 4 52100 Arezzo Italy
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Mylav Private Veterinary Laboratory Via Sirtori, 9 20017 Passirana di Rho-Milano Italy
| | - Anna Rita Molinar Min
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Department of Veterinary Sciences, University of Turin Largo Braccini 2 10095 Grugliasco Italy
| | - Mario Pasquetti
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Department of Veterinary Sciences, University of Turin Largo Braccini 2 10095 Grugliasco Italy
| | - Jacques Guillot
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Department of Dermatology-Parasitology-Mycology Oniris 44300 Nantes France
| | - Simone Roberto Rolando Pisano
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Institute for Fish and Wildlife Health (FIWI), Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern Laenggassstrasse 122, PO Box 3001 Bern Switzerland
| | - Marie-Pierre Ryser-Degiorgis
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Institute for Fish and Wildlife Health (FIWI), Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern Laenggassstrasse 122, PO Box 3001 Bern Switzerland
| | | | - Dominique Gauthier
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Laboratoire Départemental Vétérinaire des Hautes-Alpes (LDVHA 05) 05000 Gap France
| | - David Cano-Terriza
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Department of Animal Health, UIC ENZOEM, Animal Health and Zoonosis Research Group (GISAZ), University of Cordoba 14014 Córdoba Spain
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CIBERINFEC, ISCIII-CIBER de Enfermedades Infecciosas, Instituto de Salud Carlos III 28029 Madrid Spain
| | - Dino Scaravelli
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Department of Biological, Geological, and Environmental Sciences, University of Bologna via Selmi 3 40126 Bologna Italy
| | - Luca Rossi
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Department of Veterinary Sciences, University of Turin Largo Braccini 2 10095 Grugliasco Italy
| | - Andrea Peano
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Department of Veterinary Sciences, University of Turin Largo Braccini 2 10095 Grugliasco Italy
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2
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Valldeperes M, Moroni B, Rossi L, López-Olvera JR, Velarde R, Molinar Min AR, Mentaberre G, Serrano E, Angelone S, Lavín S, Granados JE. First report of interspecific transmission of sarcoptic mange from Iberian ibex to wild boar. Parasit Vectors 2021; 14:481. [PMID: 34538252 PMCID: PMC8451136 DOI: 10.1186/s13071-021-04979-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 08/26/2021] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Sarcoptic mange is a globally distributed parasitic disease caused by the burrowing mite Sarcoptes scabiei. This mite has a certain degree of host specificity, although interspecific transmission can occur among phylogenetically related species or through prey-predator mediated exposure. In 2018, a wild boar (Sus scrofa) with lesions compatible with sarcoptic mange was hunted in Ports de Tortosa i Beseit Natural Park (PTB, north-eastern Spain), where an active epizootic outbreak of sarcoptic mange is affecting Iberian ibexes (Capra pyrenaica) since 2014. METHODS A complete necropsy, skin scrapings and skin digestions with hydroxide potassium were performed to confirm the diagnosis. Routine histopathological analysis, toluidine blue staining and immunohistochemistry were used to characterize the lesions and the inflammatory infiltrate. Finally, 10 specific S. scabiei microsatellites were molecularly genotyped through polymerase chain reactions in mites obtained from the affected wild boar. For phylogenetic comparison, mites obtained from sympatric Iberian ibexes and allopatric wild boars and Iberian ibexes from southern Spain were analysed. RESULTS Sarcoptes scabiei was visually and molecularly identified in the infested wild boar from PTB, causing skin lesions with dermal inflammatory infiltrate rich in T and B cells, which indicate an adaptive immune response. Three S. scabiei genetic clusters were identified: one included mites from southern Iberian ibexes, another included mites from southern wild boars, and a third one distinctively grouped the wild boar from PTB with the sympatric ibexes. CONCLUSIONS To the authors' knowledge, this is the first reported case of sarcoptic mange in wild boar in Spain and the first documented case of S. scabiei cross-transmission from a wild ruminant host to a wild boar. The wild boar presented an ordinary scabies type reaction, which is typical of the self-limiting infestations reported in other cases of interspecific transmission.
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Affiliation(s)
- Marta Valldeperes
- Wildlife Ecology & Health group (WE&H) and Servei d’Ecopatologia de Fauna Salvatge (SEFaS), Departament de Medicina i Cirurgia Animals, Universitat Autònoma de Barcelona (UAB), Bellaterra, Spain
| | - Barbara Moroni
- Dipartimento di Scienze Veterinarie, Universitá di Torino, Grugliasco, Turin, Italy
| | - Luca Rossi
- Dipartimento di Scienze Veterinarie, Universitá di Torino, Grugliasco, Turin, Italy
| | - Jorge Ramón López-Olvera
- Wildlife Ecology & Health group (WE&H) and Servei d’Ecopatologia de Fauna Salvatge (SEFaS), Departament de Medicina i Cirurgia Animals, Universitat Autònoma de Barcelona (UAB), Bellaterra, Spain
| | - Roser Velarde
- Wildlife Ecology & Health group (WE&H) and Servei d’Ecopatologia de Fauna Salvatge (SEFaS), Departament de Medicina i Cirurgia Animals, Universitat Autònoma de Barcelona (UAB), Bellaterra, Spain
| | | | - Gregorio Mentaberre
- Wildlife Ecology & Health group (WE&H) and Departament de Ciència Animal, Escola Tècnica Superior d’Enginyeria Agrària (ETSEA), Universitat de Lleida (UdL), Lleida, Spain
| | - Emmanuel Serrano
- Wildlife Ecology & Health group (WE&H) and Servei d’Ecopatologia de Fauna Salvatge (SEFaS), Departament de Medicina i Cirurgia Animals, Universitat Autònoma de Barcelona (UAB), Bellaterra, Spain
| | - Samer Angelone
- Institute of Evolutionary Biology and Environmental Studies (IEU), University of Zürich, Zürich, Switzerland
| | - Santiago Lavín
- Wildlife Ecology & Health group (WE&H) and Servei d’Ecopatologia de Fauna Salvatge (SEFaS), Departament de Medicina i Cirurgia Animals, Universitat Autònoma de Barcelona (UAB), Bellaterra, Spain
| | - José Enrique Granados
- Espacio Natural de Sierra Nevada and Wildlife Ecology & Health Group (WE&H), Pinos Genil, Granada, Spain
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3
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Moroni B, Angelone S, Pérez JM, Molinar Min AR, Pasquetti M, Tizzani P, López-Olvera JR, Valldeperes M, Granados JE, Lavín S, Mentaberre G, Camacho-Sillero L, Martínez-Carrasco C, Oleaga A, Candela M, Meneguz PG, Rossi L. Sarcoptic mange in wild ruminants in Spain: solving the epidemiological enigma using microsatellite markers. Parasit Vectors 2021; 14:171. [PMID: 33743796 PMCID: PMC7981868 DOI: 10.1186/s13071-021-04673-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 03/05/2021] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND In Spain, sarcoptic mange was first described in native wildlife in 1987 in Cazorla Natural Park, causing the death of nearly 95% of the local native population of Iberian ibex (Capra pyrenaica). Since then, additional outbreaks have been identified in several populations of ibex and other wild ungulate species throughout the country. Although the first epizootic outbreak in wildlife was attributed to the introduction of an infected herd of domestic goats, the origin and the cause of its persistence remain unclear. The main aims of this study are to understand (i) the number of Sarcoptes scabiei "strains" circulating in wild ruminant populations in Spain, and (ii) the molecular epidemiological relationships between S. scabiei and its hosts. METHODS Ten Sarcoptes microsatellite markers were used to characterize the genetic structure of 266 mites obtained from skin scrapings of 121 mangy wild ruminants between 2011 and 2019 from 11 areas in Spain. RESULTS Seventy-three different alleles and 37 private alleles were detected. The results of this study show the existence of three genetic strains of S. scabiei in the wild ruminant populations investigated. While two genetic clusters of S. scabiei were host- and geography-related, one cluster included multi-host mites deriving from geographically distant populations. CONCLUSIONS The molecular epidemiological study of S. scabiei in wild ruminants in Spain indicates that the spreading and persistence of the parasite may be conditioned by host species community composition and the permissiveness of each host population/community to the circulation of individual "strains," among other factors. Wildlife-livestock interactions and the role of human-driven introduction or trade of wild and domestic animals should be better investigated to prevent further spread of sarcoptic mange in as yet unaffected natural areas of the Iberian Peninsula.
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Affiliation(s)
- Barbara Moroni
- Department of Veterinary Science, University of Turin, Largo Braccini 2, 10095 Grugliasco, Italy
| | - Samer Angelone
- Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, Switzerland
| | - Jesús M. Pérez
- Department of Animal and Plant Biology, and Ecology, University of Jaén, Campus Las Lagunillas, Jaén, Spain
- Wildlife Ecology & Health Group (WE&H), and Departament de Medicina I Cirurgia Animals, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - Anna Rita Molinar Min
- Department of Veterinary Science, University of Turin, Largo Braccini 2, 10095 Grugliasco, Italy
| | - Mario Pasquetti
- Department of Veterinary Science, University of Turin, Largo Braccini 2, 10095 Grugliasco, Italy
| | - Paolo Tizzani
- Department of Veterinary Science, University of Turin, Largo Braccini 2, 10095 Grugliasco, Italy
| | - Jorge Ramón López-Olvera
- Wildlife Ecology & Health Group (WE&H), and Departament de Medicina I Cirurgia Animals, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - Marta Valldeperes
- Wildlife Ecology & Health Group (WE&H), and Departament de Medicina I Cirurgia Animals, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - José Enrique Granados
- Wildlife Ecology & Health Group (WE&H), and Parque Nacional Y Parque Natural Sierra Nevada, Granada, Spain
| | - Santiago Lavín
- Wildlife Ecology & Health Group (WE&H), and Departament de Medicina I Cirurgia Animals, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - Gregorio Mentaberre
- Wildlife Ecology & Health Group (WE&H), and Departament de Ciència Animal, Escola Tècnica Superior D’Enginyeria Agraria, Universitat de Lleida, Lleida, Spain
| | - Leonor Camacho-Sillero
- Programa Vigilancia Epidemiológica Fauna Silvestre, Consejería Agricultura, Ganadería, Pesca y Desarrollo Sostenible, Junta de Andalucía, Málaga, Spain
| | - Carlos Martínez-Carrasco
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad de Murcia, Campus de Espinardo, 30100 Murcia, Spain
| | - Alvaro Oleaga
- S.E.R.P.A., Sociedad de Servicios del Principado de Asturias S.A., Gijón, Spain
| | - Mónica Candela
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad de Murcia, Campus de Espinardo, 30100 Murcia, Spain
| | - Pier Giuseppe Meneguz
- Department of Veterinary Science, University of Turin, Largo Braccini 2, 10095 Grugliasco, Italy
| | - Luca Rossi
- Department of Veterinary Science, University of Turin, Largo Braccini 2, 10095 Grugliasco, Italy
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Cardells J, Lizana V, Martí-Marco A, Lavín S, Velarde R, Rossi L, Moroni B. First description of sarcoptic mange in an Iberian hare (Lepus granatensis). CURRENT RESEARCH IN PARASITOLOGY & VECTOR-BORNE DISEASES 2021; 1:100021. [PMID: 35284901 PMCID: PMC8906140 DOI: 10.1016/j.crpvbd.2021.100021] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 03/10/2021] [Accepted: 03/11/2021] [Indexed: 11/24/2022]
Abstract
The Iberian hare (Lepus granatensis) is a popular small game species in the Iberian Peninsula, and it has never been reported to be affected by sarcoptic mange. An adult female Iberian hare with overt skin lesions on forelimbs and ventral thorax, suggestive of sarcoptic mange, was culled in Quart de les Valls municipality in the Valencian Community, Spain, in 2019. Skin scrapings were digested in 10% KOH solutions to confirm the presence of mites. Ten Sarcoptes microsatellite markers were used to characterize the genetic structure of mites obtained from the hare, and from sympatric and allopatric wild rabbits (Oryctolagus cuniculus) and red foxes (Vulpes vulpes). A total of 56 alleles were counted across the 10 microsatellite loci. Six private alleles were found at four loci (Sarms 33, 38, 41, 45). The multivariate analysis characterized three main clusters, corresponding to mites collected on foxes originating from Catalonia, foxes from Valencia and the hare plus wild rabbits. To our knowledge, this is the first reported case of sarcoptic mange in the Iberian hare. The origin was molecularly traced back to contacts with endemically infected wild rabbits. We encourage further investigations on cross-transmissibility of S. scabiei between wild rabbits and the diverse representatives of Lepus spp. Crusted scabies in an Iberian hare was detected for the first time in Valencia, Spain in 2019. Wild rabbits might be a natural source of infection of S. scabiei for the Iberian hare, rather than sympatric predators. Microsatellite markers are efficient epidemiological tools for tracing the source of Sarcoptes scabiei infection.
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Affiliation(s)
- Jesús Cardells
- Servicio de Análisis, Investigación, Gestión de Animales Silvestres (SAIGAS), Facultad de Veterinaria, Universidad Cardenal Herrera-CEU, CEU Universities Alfara del Patriarca, Valencia, Spain
- Wildlife Ecology & Health Group (WE&H), Universitat Autònoma de Barcelona (UAB), Bellaterra, Barcelona, Spain
| | - Victor Lizana
- Servicio de Análisis, Investigación, Gestión de Animales Silvestres (SAIGAS), Facultad de Veterinaria, Universidad Cardenal Herrera-CEU, CEU Universities Alfara del Patriarca, Valencia, Spain
- Wildlife Ecology & Health Group (WE&H), Universitat Autònoma de Barcelona (UAB), Bellaterra, Barcelona, Spain
| | - Alba Martí-Marco
- Servicio de Análisis, Investigación, Gestión de Animales Silvestres (SAIGAS), Facultad de Veterinaria, Universidad Cardenal Herrera-CEU, CEU Universities Alfara del Patriarca, Valencia, Spain
| | - Santiago Lavín
- Wildlife Ecology & Health Group (WE&H), Universitat Autònoma de Barcelona (UAB), Bellaterra, Barcelona, Spain
| | - Roser Velarde
- Wildlife Ecology & Health Group (WE&H), Universitat Autònoma de Barcelona (UAB), Bellaterra, Barcelona, Spain
| | - Luca Rossi
- Dipartimento di Scienze Veterinarie, Università degli Studi di Torino, Largo Paolo Braccini 2, 10095, Grugliasco, Italy
| | - Barbara Moroni
- Dipartimento di Scienze Veterinarie, Università degli Studi di Torino, Largo Paolo Braccini 2, 10095, Grugliasco, Italy
- Corresponding author.
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5
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Pérez JM, Granados JE, Espinosa J, Ráez‐Bravo A, López‐Olvera JR, ROSSI L, Meneguz PG, Angelone S, Fandos P, Soriguer RC. Biology and management of sarcoptic mange in wild Caprinae populations. Mamm Rev 2020. [DOI: 10.1111/mam.12213] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Jesús M. Pérez
- Department of Animal and Plant Biology, and Ecology Jaén University Campus Las Lagunillas, s.n.; E‐23071 Jaén Spain
| | - José E. Granados
- Carretera Antigua de Sierra Nevada Espacio Natural de Sierra Nevada Km 7, E‐18071 Pinos Genil, Granada Spain
| | - José Espinosa
- Department of Animal Health‐Instituto de Ganadería de Montaña (IGM) ULe‐CSIC León Spain
- Faculty of Veterinary Science University of León Campus de Vegazana, s.n.; E 24071 León Spain
| | - Arián Ráez‐Bravo
- Servei d’Ecopatologia de Fauna Salvatge Departament de Medicina i Cirurgia Animals Universitat Autònoma de Barcelona E‐08193 Bellaterra, Barcelona Spain
| | - Jorge R. López‐Olvera
- Servei d’Ecopatologia de Fauna Salvatge Departament de Medicina i Cirurgia Animals Universitat Autònoma de Barcelona E‐08193 Bellaterra, Barcelona Spain
| | - Luca ROSSI
- Dipartimento di Science Veterinarie Università di Torino Largo Paolo Braccini 2 10095 Grugliasco Italy
| | - Pier Giuseppe Meneguz
- Dipartimento di Science Veterinarie Università di Torino Largo Paolo Braccini 2 10095 Grugliasco Italy
| | - Samer Angelone
- Institute of Evolutionary Biology and Environmental Studies (IEU) University of Zürich Winterthurerstrasse 190 Zürich Switzerland
| | - Paulino Fandos
- Agencia de Medio Ambiente y Agua Isla de la Cartuja E‐41092 Sevilla Spain
| | - Ramón C Soriguer
- Estación Biológica de Doñana (CSIC) Av. Américo Vespucio, s.n E‐41092 Sevilla Spain
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Su T, Liu H, Zhang D, Xu G, Liu J, Evans SM, Pan J, Cui S. LIM homeodomain transcription factor Isl1 affects urethral epithelium differentiation and apoptosis via Shh. Cell Death Dis 2019; 10:713. [PMID: 31558700 PMCID: PMC6763423 DOI: 10.1038/s41419-019-1952-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 08/25/2019] [Accepted: 09/03/2019] [Indexed: 12/14/2022]
Abstract
Urethral hypoplasia, including failure of urethral tube closure, is one of the common phenotypes observed in hereditary human disorders, the mechanism of which remains unclear. The present study was thus designed to study the expression, functions, and related mechanisms of the LIM homeobox transcription factor Isl1 throughout mouse urethral development. Results showed that Isl1 was highly expressed in urethral epithelial cells and mesenchymal cells of the genital tubercle (GT). Functional studies were carried out by utilizing the tamoxifen-inducible Isl1-knockout mouse model. Histological and morphological results indicated that Isl1 deletion caused urethral hypoplasia and inhibited maturation of the complex urethral epithelium. In addition, we show that Isl1-deleted mice failed to maintain the progenitor cell population required for renewal of urethral epithelium during tubular morphogenesis and exhibited significantly increased cell death within the urethra. Dual-Luciferase reporter assays and yeast one-hybrid assays showed that ISL1 was essential for normal urethral development by directly targeting the Shh gene. Collectively, results presented here demonstrated that Isl1 plays a crucial role in mouse urethral development, thus increasing our potential for understanding the mechanistic basis of hereditary urethral hypoplasia.
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Affiliation(s)
- Tiantian Su
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, 100193, Beijing, People's Republic of China
| | - Hui Liu
- College of Veterinary Medicine, Yangzhou University, 225009, Yangzhou, Jiangsu, People's Republic of China
| | - Di Zhang
- College of Veterinary Medicine, Yangzhou University, 225009, Yangzhou, Jiangsu, People's Republic of China
| | - Guojin Xu
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, 100193, Beijing, People's Republic of China
| | - Jiali Liu
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, 100193, Beijing, People's Republic of China
| | - Sylvia M Evans
- Skaggs School of Pharmacy, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA
| | - Jirong Pan
- Key Laboratory of Human Disease Comparative MedicineInstitute of Laboratory Animal Science, Chinese Academy of Medical Science and Comparative Medical Center, Peking Union Medical College, 100021, Beijing, People's Republic of China.
| | - Sheng Cui
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, 100193, Beijing, People's Republic of China. .,College of Veterinary Medicine, Yangzhou University, 225009, Yangzhou, Jiangsu, People's Republic of China.
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7
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Suaste-Dzul AP, Rodríguez-Vélez JM, Rodríguez-Vélez B, Arredondo-Bernal HC, Gallou A. Non-destructive DNA extraction methods for entomophagous insects with emphasis on biological control. Genome 2019; 62:287-293. [PMID: 30817213 DOI: 10.1139/gen-2018-0045] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
One of the major challenges in molecular analysis of arthropods, especially for natural enemies of insect pests, is the intact preservation of the specimens to be integrated into entomological collections. However, most of the DNA extraction protocols involve maceration of the tissue, avoiding the preservation of the original specimen. Two general methods were adapted into non-destructive DNA extraction protocols, DNeasy® Blood & Tissue Kit (A) and the CaCl2 lysis buffer method (B), while the potential of the method with the alkaline lysis buffer (HotSHOT; C) was evaluated for the first time on insect specimens. These protocols were assessed for the recovery of DNA from Ceraeochrysa valida, Tamarixia radiata, and Hippodamia convergens. Photographical records showed that morphological features of the specimens were preserved after the DNA extraction process. COI fragments were successfully amplified with method A (100%), B (77%), and C (88%), respectively. We conclude that these non-destructive DNA extraction methods avoid the destruction of tissue and preserve the original insects and their morphological characteristics for future reference.
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Affiliation(s)
- Alba P Suaste-Dzul
- Centro Nacional de Referencia de Control Biológico. Km. 1.5 Estación-FFCC, Col. Tepeyac. C.P. 28110. Tecomán, Colima, Mexico.,Centro Nacional de Referencia de Control Biológico. Km. 1.5 Estación-FFCC, Col. Tepeyac. C.P. 28110. Tecomán, Colima, Mexico
| | - José Manuel Rodríguez-Vélez
- Centro Nacional de Referencia de Control Biológico. Km. 1.5 Estación-FFCC, Col. Tepeyac. C.P. 28110. Tecomán, Colima, Mexico.,Centro Nacional de Referencia de Control Biológico. Km. 1.5 Estación-FFCC, Col. Tepeyac. C.P. 28110. Tecomán, Colima, Mexico
| | - Beatriz Rodríguez-Vélez
- Centro Nacional de Referencia de Control Biológico. Km. 1.5 Estación-FFCC, Col. Tepeyac. C.P. 28110. Tecomán, Colima, Mexico.,Centro Nacional de Referencia de Control Biológico. Km. 1.5 Estación-FFCC, Col. Tepeyac. C.P. 28110. Tecomán, Colima, Mexico
| | - Hugo Cesar Arredondo-Bernal
- Centro Nacional de Referencia de Control Biológico. Km. 1.5 Estación-FFCC, Col. Tepeyac. C.P. 28110. Tecomán, Colima, Mexico.,Centro Nacional de Referencia de Control Biológico. Km. 1.5 Estación-FFCC, Col. Tepeyac. C.P. 28110. Tecomán, Colima, Mexico
| | - Adrien Gallou
- Centro Nacional de Referencia de Control Biológico. Km. 1.5 Estación-FFCC, Col. Tepeyac. C.P. 28110. Tecomán, Colima, Mexico.,Centro Nacional de Referencia de Control Biológico. Km. 1.5 Estación-FFCC, Col. Tepeyac. C.P. 28110. Tecomán, Colima, Mexico
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8
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Kartavtsev YP, Sharina SN, Chichvarkhin AY, Chichvarkhina OV, Masalkova NA, Lutaenko KA, Oliveira C. Genetic Divergence of Mussels (Mollusca, Mytilidae) Based on the 28S rRNA, 18S rRNA, and H3 Nuclear Gene Sequences. RUSS J GENET+ 2018. [DOI: 10.1134/s1022795418060078] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Sarcoptic Mange in a South American Gray Fox (Chilla Fox;Lycalopex griseus), Chile. J Wildl Dis 2016; 52:738-41. [DOI: 10.7589/2015-07-177] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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10
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Angelone-Alasaad S, Molinar Min A, Pasquetti M, Alagaili AN, D'Amelio S, Berrilli F, Obanda V, Gebely MA, Soriguer RC, Rossi L. Universal conventional and real-time PCR diagnosis tools for Sarcoptes scabiei. Parasit Vectors 2015; 8:587. [PMID: 26568063 PMCID: PMC4644327 DOI: 10.1186/s13071-015-1204-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Accepted: 11/10/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The mite Sarcoptes scabiei has a known host-range of over 100 mammal species including humans. One of the prime objectives of the Sarcoptes-World Molecular Network (WMN) is to design and develop universal Sarcoptes PCR-based diagnosis methods. METHODS We describe here for the first time two universal mitochondrial-based diagnosis methods: (i) conventional end-point PCR and (ii) TaqMan real-time PCR. The design of both of these universal diagnosis methods was based on Sarcoptes samples collected from 23 host species in 14 countries. RESULTS These methods, based on skin scrapings, were successfully used to etiologically confirm the diagnosis of different clinical degrees of sarcoptic mange in 48 animals belonging to six species. These universal PCR-based diagnosis methods are highly specific, technically sensitive and simple, and are based on the amplification of 135 bp from the Mitochondrial 16S rDNA. The method based on TaqMan real-time qPCR was more sensitive than the conventional end-point PCR. CONCLUSIONS Two universal PCR-based diagnosis methods for S. scabiei were successfully designed and applied; one based on conventional end-point PCR and the other on TaqMan real-time PCR. We recommend further testing and the application of these new universal methods worldwide.
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Affiliation(s)
- Samer Angelone-Alasaad
- Dipartimento di Scienze Veterinarie, Largo Paolo Braccini 2, 10095, Grugliasco, Italy. .,Institute of Evolutionary Biology and Environmental Studies (IEU), University of Zürich, Winterthurerstrasse 190, 8057, Zürich, Switzerland.
| | - AnnaRita Molinar Min
- Dipartimento di Scienze Veterinarie, Largo Paolo Braccini 2, 10095, Grugliasco, Italy.
| | - Mario Pasquetti
- Dipartimento di Scienze Veterinarie, Largo Paolo Braccini 2, 10095, Grugliasco, Italy.
| | - Abdulaziz N Alagaili
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia.
| | - Stefano D'Amelio
- Department of Public Health and Infectious Diseases, University of Rome La Sapienza, Rome, Italy.
| | - Federica Berrilli
- Department of Experimental Medicine and Surgery, University of Rome Tor Vergata, Rome, Italy.
| | - Vincent Obanda
- Department of Veterinary Services, Kenya Wildlife Service, Nairobi, Kenya.
| | - Mohamed A Gebely
- Department of Parasitology and Animal Diseases, Veterinary Research Division, National Research Center, Dokki, Giza, Egypt.
| | - Ramón C Soriguer
- Estación Biológica de Doñana, Consejo Superior de Investigaciones Científicas (CSIC), Avda. Américo Vespucio s/n, 41092, Sevilla, Spain.
| | - Luca Rossi
- Dipartimento di Scienze Veterinarie, Largo Paolo Braccini 2, 10095, Grugliasco, Italy.
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11
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A novel intracellular mutualistic bacterium in the invasive ant Cardiocondyla obscurior. ISME JOURNAL 2015; 10:376-88. [PMID: 26172209 DOI: 10.1038/ismej.2015.119] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Revised: 04/29/2015] [Accepted: 06/09/2015] [Indexed: 12/20/2022]
Abstract
The evolution of eukaryotic organisms is often strongly influenced by microbial symbionts that confer novel traits to their hosts. Here we describe the intracellular Enterobacteriaceae symbiont of the invasive ant Cardiocondyla obscurior, 'Candidatus Westeberhardia cardiocondylae'. Upon metamorphosis, Westeberhardia is found in gut-associated bacteriomes that deteriorate following eclosion. Only queens maintain Westeberhardia in the ovarian nurse cells from where the symbionts are transmitted to late-stage oocytes during nurse cell depletion. Functional analyses of the streamlined genome of Westeberhardia (533 kb, 23.41% GC content) indicate that neither vitamins nor essential amino acids are provided for the host. However, the genome encodes for an almost complete shikimate pathway leading to 4-hydroxyphenylpyruvate, which could be converted into tyrosine by the host. Taken together with increasing titers of Westeberhardia during pupal stage, this suggests a contribution of Westeberhardia to cuticle formation. Despite a widespread occurrence of Westeberhardia across host populations, one ant lineage was found to be naturally symbiont-free, pointing to the loss of an otherwise prevalent endosymbiont. This study yields insights into a novel intracellular mutualist that could play a role in the invasive success of C. obscurior.
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12
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Juan C, ChengCheng L, YaE Z, Li H, YuanJun Y, Fan Y, ZhiYun S. Population identification and divergence threshold in Psoroptidae based on ribosomal ITS2 and mitochondrial COI genes. Parasitol Res 2015; 114:3497-507. [PMID: 26141432 DOI: 10.1007/s00436-015-4578-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Accepted: 06/10/2015] [Indexed: 11/26/2022]
Abstract
Psoroptidae mites are a type of small mites with a wide range of hosts. The proliferation of Psoroptidae mites could cause symptoms such as severe itching, atopic dermatitis, and hair loss in infected animals. If severely infected, death can also occur. The morphological classification and identification of Psoroptidae mites is problematic due to the overlapping geographical distribution. In addition, there is no divergence threshold for molecular classification and identification. To solve this problem, gDNA was extracted from individual Psoroptes and Otodectes mites (China) for amplification of rDNA ITS2 and mtDNA COI. After that, the sequences obtained were aligned and analyzed with those retrieved from GenBank. Based on rDNA ITS2 sequences, Psoroptidae was divided into three genera, namely, Psoroptes, Chorioptes, and Otodectes, which was in accordance with morphological classification. The intraspecies, interspecies, and intergenera could be differentiated effectively, with thresholds ≤ 5.20, 6.18-14.86, and ≥15.72 %, respectively. However, based on mtDNA COI sequences, Psoroptidae was divided into four genera with Caparinia added, as Caparinia sp did not cluster with the other three genera. The intra- and interspecies could be differentiated effectively, but interspecies and intergenera could not. The intra- and interspecies identification thresholds were ≤ 2.12 and ≥10.93 %. Further analysis showed that host but not geographical isolation was found in Psoroptes and Chorioptes, whereas Otodectes mites parasitizing dogs and cats were the same species; neither host nor geographical isolation was observed. In conclusion, rDNA ITS2 is better than mtDNA COI for DNA barcoding in Psoroptidae.
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Affiliation(s)
- Cheng Juan
- Department of Immunology and Pathogen Biology, School of Basic Medical Science, Xi'an Jiaotong University, No. 76 Yanta West Road, Xi'an, China, 710061
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13
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Zhao Y, Cao Z, Cheng J, Hu L, Ma J, Yang Y, Wang X, Zeng J, Wang T. Population identification of Sarcoptes hominis and Sarcoptes canis in China using DNA sequences. Parasitol Res 2014; 114:1001-10. [PMID: 25547078 DOI: 10.1007/s00436-014-4266-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Accepted: 12/15/2014] [Indexed: 11/25/2022]
Abstract
There has been no consistent conclusion on whether Sarcoptes mites parasitizing in humans and animals are the same species. To identify Sarcoptes (S.) hominis and S. canis in China, gDNA was extracted from individual mites (five from patients with scabies and five from dogs with mange) for amplification of rDNA ITS2, mtDNA 16S, and cox1 fragment sequences. Then, the sequences obtained were aligned with those from different hosts and geographical locations retrieved from GenBank and sequence analyses were conducted. Phylogenetic trees based on 317-bp mtDNA cox1 showed five distinctive branches (species) of Sarcoptes mites, four for S. hominis (S. hominis Chinese, S. nr. hominis Chinese, S. hominis Australian, and S. hominis Panamanian) and one for S. animal (S. animal). S. animal included mites from nine animal species, with S. canis China, S. canis Australia, and S. canis USA clustering as a subbranch. Further sequence divergence analysis revealed no overlap between intraspecific (≤ 2.6 %) and interspecific (2.6-10.5 %) divergences in 317-bp mtDNA cox1. However, overlap was detected between intra- and interspecific divergences in 311-bp rDNA ITS2 or 275-bp mtDNA 16S when the divergences exceeded 1.0 %, which resulted in failure in identification of Sarcoptes. The results showed that the 317-bp mtDNA cox1 could be used as a DNA barcode for molecular identification of Sarcoptes mites. In addition, geographical isolation was observed between S. hominis Chinese, S. hominis Australian, and S. hominis Panamanian, but not between all S. canis. S. canis and the other S. animal belonged to the same species.
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Affiliation(s)
- YaE Zhao
- Department of Immunology and Pathogen Biology, Xi'an Jiaotong University Health Science Center, No.76 Yanta West Road, Xi'an, China, 710061,
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14
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Rentería-Solís Z, Min AM, Alasaad S, Müller K, Michler FU, Schmäschke R, Wittstatt U, Rossi L, Wibbelt G. Genetic epidemiology and pathology of raccoon-derived Sarcoptes mites from urban areas of Germany. MEDICAL AND VETERINARY ENTOMOLOGY 2014; 28 Suppl 1:98-103. [PMID: 25171612 DOI: 10.1111/mve.12079] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Revised: 04/14/2014] [Accepted: 04/23/2014] [Indexed: 06/03/2023]
Abstract
The raccoon, Procyon lotor (Carnivora: Procyonidae), is an invasive species that is spreading throughout Europe, in which Germany represents its core area. Here, raccoons mostly live in rural regions, but some urban populations are already established, such as in the city of Kassel, or are starting to build up, such as in Berlin. The objective of this study was to investigate Sarcoptes (Sarcoptiformes: Sarcoptidae) infections in racoons in these two urban areas and to identify the putative origin of the parasite. Parasite morphology, and gross and histopathological examinations of diseased skin tissue were consistent with Sarcoptes scabiei infection. Using nine microsatellite markers, we genotyped individual mites from five raccoons and compared them with Sarcoptes mites derived from fox, wild boar and Northern chamois, originating from Italy and Switzerland. The raccoon-derived mites clustered together with the fox samples and were clearly differentiated from those of the wild boar and chamois samples, which suggests a fox origin for the raccoon mange infection. These results are evidence of the cross-transmission of S. scabiei among wild carnivores. Although our results cannot elucidate whether raccoons became infected by frequent interaction with endemically or epidemically infected foxes or whether these cases resulted from occasional contacts among these animal species, they do nevertheless show that pathogens can be shared among urban populations of native and invasive carnivores.
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Affiliation(s)
- Z Rentería-Solís
- Department of Wildlife Diseases, Leibniz Institute for Zoo and Wildlife Research, Berlin, Germany
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15
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Alasaad S, Sarasa M, Heukelbach J, Mijele D, Soriguer RC, Zhu XQ, Rossi L. Advances in studies of disease-navigating webs: Sarcoptes scabiei as a case study. Parasit Vectors 2014; 7:16. [PMID: 24406101 PMCID: PMC3895661 DOI: 10.1186/1756-3305-7-16] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2013] [Accepted: 01/02/2014] [Indexed: 11/18/2022] Open
Abstract
The discipline of epidemiology is the study of the patterns, causes and effects of health and disease conditions in defined anima populations. It is the key to evidence-based medicine, which is one of the cornerstones of public health. One of the important facets of epidemiology is disease-navigating webs (disease-NW) through which zoonotic and multi-host parasites in general move from one host to another. Epidemiology in this context includes (i) classical epidemiological approaches based on the statistical analysis of disease prevalence and distribution and, more recently, (ii) genetic approaches with approximations of disease-agent population genetics. Both approaches, classical epidemiology and population genetics, are useful for studying disease-NW. However, both have strengths and weaknesses when applied separately, which, unfortunately, is too often current practice. In this paper, we use Sarcoptes scabiei mite epidemiology as a case study to show how important an integrated approach can be in understanding disease-NW and subsequent disease control.
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Affiliation(s)
- Samer Alasaad
- Estación Biológica de Doñana, Consejo Superior de Investigaciones Científicas (CSIC), Avda, Américo Vespucio s/n 41092, Sevilla, Spain.
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16
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Genetic epidemiology of Sarcoptes scabiei in the Iberian wolf in Asturias, Spain. Vet Parasitol 2013; 196:453-9. [DOI: 10.1016/j.vetpar.2013.04.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Revised: 04/09/2013] [Accepted: 04/11/2013] [Indexed: 11/17/2022]
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17
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Gakuya F, Rossi L, Ombui J, Maingi N, Muchemi G, Ogara W, Soriguer RC, Alasaad S. The curse of the prey: Sarcoptes mite molecular analysis reveals potential prey-to-predator parasitic infestation in wild animals from Masai Mara, Kenya. Parasit Vectors 2011; 4:193. [PMID: 21978557 PMCID: PMC3193033 DOI: 10.1186/1756-3305-4-193] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2011] [Accepted: 10/06/2011] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Recently, there have been attempts to understand the molecular epidemiology of Sarcoptes scabiei, to evaluate the gene flow between isolates of S. scabiei from different hosts and geographic regions. However, to our knowledge, a molecular study has not been carried out to assess the molecular diversity and gene flow of Sarcoptes mite in a predator/prey ecosystem. RESULTS Our study revealed an absence of gene flow between the two herbivore (Thomson's gazelle and wildebeest)- and between the two carnivore (lion and cheetah)-derived Sarcoptes populations from Masai Mara (Kenya), which is in discrepancy with the host-taxon law described for wild animals in Europe. Lion- and wildebeest-derived Sarcoptes mite populations were similar yet different from the Thomson's gazelle-derived Sarcoptes population. This could be attributed to Sarcoptes cross-infestation from wildebeest ("favourite prey") of the lion, but not from Thomson's gazelle. The cheetah-derived Sarcoptes population had different subpopulations: one is cheetah-private, one similar to the wildebeest- and lion-derived Sarcoptes populations, and another similar to the Thomson's gazelle-derived Sarcoptes mite population, where both wildebeest and Thomson's gazelle are "favourite preys" for the cheetah. CONCLUSIONS In a predator/prey ecosystem, like Masai Mara in Kenya, it seems that Sarcoptes infestation in wild animals is prey-to-predator-wise, depending on the predator's "favourite prey". More studies on the lion and cheetah diet and behaviour could be of great help to clarify the addressed hypotheses. This study could have further ramification in the epidemiological studies and the monitoring protocols of the neglected Sarcoptes mite in predator/prey ecosystems.
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Affiliation(s)
- Francis Gakuya
- Department of Veterinary and Capture Services, Kenya Wildlife Service, Kenya
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18
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Applicability of molecular markers to determine parasitic infection origins in the animal trade: a case study from Sarcoptes mites in wildebeest. Forensic Sci Med Pathol 2011; 8:280-4. [PMID: 21814832 DOI: 10.1007/s12024-011-9268-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/16/2011] [Indexed: 10/17/2022]
Abstract
The development of non-manipulative molecular tools to determine the origin of parasite infections in the animal trade (if infected before their export or import) is of great interest worldwide for both the animal trade industry and for animal welfare. Molecular tools have a wide range of applications, including forensic identification, wildlife preservation and conservation, veterinary public health protection, and food safety. Nonetheless, genetic markers were not reported to detect the source of infection in the animal trade. In this study we tested the applicability of molecular tools to detect the origin of Sarcoptes mite infection of wildebeest imported by the United Arab Emirate (UAE) from Tanzania. Using one multiplex of seven microsatellite markers and control samples from UAE, Kenya and Italy, we demonstrated the usefulness of the multiplex STR-typing as a molecular tool of pivotal interest to help commercialist, authorities, and conservationists, to identify the geographical origin of parasitic infections.
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19
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Alasaad S, Oleaga Á, Casais R, Rossi L, Min AM, Soriguer RC, Gortázar C. Temporal stability in the genetic structure of Sarcoptes scabiei under the host-taxon law: empirical evidences from wildlife-derived Sarcoptes mite in Asturias, Spain. Parasit Vectors 2011; 4:151. [PMID: 21794141 PMCID: PMC3160406 DOI: 10.1186/1756-3305-4-151] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2011] [Accepted: 07/27/2011] [Indexed: 11/10/2022] Open
Abstract
Background Implicitly, parasite molecular studies assume temporal genetic stability. In this study we tested, for the first time to our knowledge, the extent of changes in genetic diversity and structure of Sarcoptes mite populations from Pyrenean chamois (Rupicapra pyrenaica) in Asturias (Spain), using one multiplex of 9 microsatellite markers and Sarcoptes samples from sympatric Pyrenean chamois, red deer (Cervus elaphus), roe deer (Capreolus capreolus) and red fox (Vulpes vulpes). Results The analysis of an 11-years interval period found little change in the genetic diversity (allelic diversity, and observed and expected heterozygosity). The temporal stability in the genetic diversity was confirmed by population structure analysis, which was not significantly variable over time. Population structure analysis revealed temporal stability in the genetic diversity of Sarcoptes mite under the host-taxon law (herbivore derived- and carnivore derived-Sarcoptes mite) among the sympatric wild animals from Asturias. Conclusions The confirmation of parasite temporal genetic stability is of vital interest to allow generalizations to be made, which have further implications regarding the genetic structure, epidemiology and monitoring protocols of the ubiquitous Sarcoptes mite. This could eventually be applied to other parasite species.
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Affiliation(s)
- Samer Alasaad
- Institute of Evolutionary Biology and Environmental Studies (IEU), University of Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland.
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Single-tube HotSHOT technique for the collection, preservation and PCR-ready DNA preparation of faecal samples: the threatened Cabrera's vole as a model. EUR J WILDLIFE RES 2011. [DOI: 10.1007/s10344-011-0526-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Alasaad S, Soglia D, Spalenza V, Maione S, Soriguer R, Pérez J, Rasero R, Degiorgis MR, Nimmervoll H, Zhu X, Rossi L. Is ITS-2 rDNA suitable marker for genetic characterization of Sarcoptes mites from different wild animals in different geographic areas? Vet Parasitol 2009; 159:181-5. [DOI: 10.1016/j.vetpar.2008.10.001] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2008] [Revised: 10/03/2008] [Accepted: 10/03/2008] [Indexed: 10/21/2022]
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Alasaad S, Rossi L, Soriguer RC, Rambozzi L, Soglia D, Pérez JM, Zhu XQ. Sarcoptes mite from collection to DNA extraction: the lost realm of the neglected parasite. Parasitol Res 2009; 104:723-32. [PMID: 19159955 DOI: 10.1007/s00436-009-1333-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2008] [Accepted: 01/07/2009] [Indexed: 11/26/2022]
Abstract
Sarcoptes mite from collection to DNA extraction forms the cornerstone for studies on Sarcoptes scabiei. Whilst the new science era took a shy leap into the different facets of mite studies, the cornerstone was almost entirely neglected. Mite collection, cleaning, storage and DNA extraction were, basically, humble attempts to extrapolate, adapt, modify or 'pirate' those existing methods to the peculiarities of Sarcoptes research. These aspects usually constituted few lines, bashfully mentioned, in the materials and methods section of some papers, which arose in unique problems concerning cost-effectiveness, time profitability, safety and even worse, the credibility of the results, creating contradictory conclusions in some cases. This 'noisy' situation encouraged us to collect, classify and review, for the first time to our knowledge, some aspects relating to studies on Sarcoptes mite from collection to DNA extraction, which will be useful for further studies on Sarcoptes, and have implications for the effective control of the diseases Sarcoptes mite causes. Further studies are needed, especially to compare the profitability, safety, sensibility and specificity of the different methods of this neglected realm of the ubiquitous ectoparasite.
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Affiliation(s)
- S Alasaad
- Department of Ecology and Sylviculture, Aleppo University, 20333 Aleppo, Syria.
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Skin-scale genetic structure of Sarcoptes scabiei populations from individual hosts: empirical evidence from Iberian ibex-derived mites. Parasitol Res 2008; 104:101-5. [PMID: 18758821 DOI: 10.1007/s00436-008-1165-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2008] [Accepted: 08/13/2008] [Indexed: 10/21/2022]
Abstract
The objective of the present study was to examine the extent of genetic diversity among Sarcoptes scabiei individuals belonging to different skin subunits of the body from individual mangy hosts. Ten microsatellite primers were applied on 44 individual S. scabiei mites from three mangy Iberian ibexes from Sierra Nevada Mountain in Spain. Dendrograms of the mites from the individual Iberian ibexes, showing the proportion of shared alleles between pairs of individual mites representing three skin subpopulations (head, back, and abdomen subunits), allowed the clustering of some mite samples up to their skin subunits. This genetic diversity of S. scabiei at skin-scale did not have the same pattern in all considered hosts: for the first Iberian ibex (Cp1), only mites from the head subunit were grouped together; in the second individual (Cp2), the clustering was detected only for mites from the abdomen subunit; and for the third one (Cp3), only mites from the back subunit were clustered together. Our results suggest that the local colonization dynamics of S. scabiei would have influenced the nonrandom distribution of this ectoparasite, after a single infestation. Another presumable explanation to this skin-scale genetic structure could be the repeated infestations. To our knowledge, this is the first documentation of genetic structuring among S. scabiei at individual host skin-scale. Further studies are warranted to highlight determining factors of such trend, but the pattern underlined in the present study should be taken into account in diagnosis and monitoring protocols for studying the population genetic structure and life cycle of this neglected but important ectoparasite.
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