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Hammami I, Timoumi O, Larbi I, Rekik S, Maghzaoua D, Gharbi M. First report of Sarcocystis falcatula in naturally infected Razorbill auks (Alca torda) collected in Tunisian Mediterranean Sea shores. Parasitol Res 2024; 123:193. [PMID: 38656629 DOI: 10.1007/s00436-024-08214-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 04/16/2024] [Indexed: 04/26/2024]
Abstract
Sarcocystis spp. are apicomplexan cyst-forming parasites that can infect numerous vertebrates, including birds. Sarcosporidiosis infection was investigated in three muscles (breast, right and left thigh muscle) and one organ (heart) of four Razorbill auks (Alca torda) stranded between November and December 2022 on the shores of the Mediterranean Sea in Nabeul and Bizerte governorates, Northern Tunisia. Two of the four tested A. torda were PCR positive for 18S rRNA Sarcocystis spp. gene. Among the examined 16 muscles/organs, only one breast and one right thigh were Sarcocystis spp. PCR-positive (12.5% ± 8.3, 2/16). Our results showed a relatively high molecular prevalence of Sarcocystis spp. in Razorbill auks (A. torda). Sarcocystis spp. sequence described in the present study (GenBank number: OR516818) showed 99.56-100% identity to Sarcocystis falcatula. In conclusion, our results confirmed the infection of Razorbill auks (A. torda) by S. falcatula. Further research is needed on different migratory seabirds' species in order to identify other Sarcocystis species.
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Affiliation(s)
- Ines Hammami
- Laboratory of Parasitologie, National School of Veterinary Medicine of Sidi Thabet, Univ. Manouba, Institution de la Recherche et de l'Enseignement Supérieur Agricoles, 2020, Sidi Thabet, Tunisia.
| | - Oumayma Timoumi
- Laboratory of Parasitologie, National School of Veterinary Medicine of Sidi Thabet, Univ. Manouba, Institution de la Recherche et de l'Enseignement Supérieur Agricoles, 2020, Sidi Thabet, Tunisia
| | - Imen Larbi
- Laboratory of Epidemiology and Veterinary Microbiology, LR 11 IPT 03, Institut Pasteur de Tunis, Universite de Tunis El Manar (UTM), Tunis, Tunisia
| | - Syrine Rekik
- Laboratory of Parasitologie, National School of Veterinary Medicine of Sidi Thabet, Univ. Manouba, Institution de la Recherche et de l'Enseignement Supérieur Agricoles, 2020, Sidi Thabet, Tunisia
| | - Dhekra Maghzaoua
- Laboratory of Parasitologie, National School of Veterinary Medicine of Sidi Thabet, Univ. Manouba, Institution de la Recherche et de l'Enseignement Supérieur Agricoles, 2020, Sidi Thabet, Tunisia
| | - Mohamed Gharbi
- Laboratory of Parasitologie, National School of Veterinary Medicine of Sidi Thabet, Univ. Manouba, Institution de la Recherche et de l'Enseignement Supérieur Agricoles, 2020, Sidi Thabet, Tunisia
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Zwarg T, Raso TF, de Carvalho MPN, Santos RL, Dos Santos DO, Llano HAB, Soares RM. Acute, fatal Sarcocystis falcatula infection in rose-ringed parakeets (Psittacula krameri). Vet Parasitol Reg Stud Reports 2023; 46:100935. [PMID: 37935536 DOI: 10.1016/j.vprsr.2023.100935] [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: 03/04/2023] [Revised: 09/04/2023] [Accepted: 10/02/2023] [Indexed: 11/09/2023]
Abstract
Sarcocystosis is an important avian disease that affects several intermediate host species. Birds not endemic from Americas, like Old World psittacine species, appear to be more susceptible to lethal infection than New World psittacine species. The aim of this study was to investigate the sudden death of rose-ringed parakeets (Psittacula krameri) in an exotic private parrot's aviary. Macroscopically, the most prevalent findings were severe lung congestion, slight superficial myocardial hemorrhagic lesions, enlarged liver and congestion of meningeal vessels. The initial diagnosis of sarcocystosis was made in all birds by microscopic observations of intravascular pulmonary schizonts, as well hepatitis, myocarditis, and nephritis. Immunohistochemistry for detection of Sarcocystis sp. antigen revealed an intense immunoreactivity in the lungs. Molecular identification of Sarcocystis falcatula were obtained by nested PCR and sequencing of amplified fragments of internal transcribed spacer 1 (ITS1) and three surface antigen-coding genes (SAG2, SAG3 and SAG4). SAG-based phylogenies showed a close relatedness of the isolate described here and S. falcatula previously detected in naturally infected native birds, which suggests that the isolates that affected ringnecks are a common isolate that circulates in Brazil.
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Affiliation(s)
- Ticiana Zwarg
- The Fauna Division of the Municipal Secretariat for Green and Environment of the Municipality of São Paulo, SP, Brazil
| | - Tânia Freitas Raso
- Department of Pathology, School of Veterinary Medicine and Animal Science, University of São Paulo (USP), São Paulo, SP, Brazil
| | | | - Renato Lima Santos
- Department of Veterinary Clinics and Surgery, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Daniel Oliveira Dos Santos
- Department of Veterinary Clinics and Surgery, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Horwald A B Llano
- Investigation Group (GINVER), School of Veterinary Medicine, Corporación Universitaria Remington, Medellín, Colombia
| | - Rodrigo Martins Soares
- Department of Preventive Veterinary Medicine and Animal Health, School of Veterinary Medicine and Animal Science, University of São Paulo (USP), São Paulo, SP, Brazil.
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Šukytė T, Butkauskas D, Juozaitytė-Ngugu E, Švažas S, Prakas P. Molecular Confirmation of Accipiter Birds of Prey as Definitive Hosts of Numerous Sarcocystis Species, including Sarcocystis sp., Closely Related to Pathogenic S. calchasi. Pathogens 2023; 12:752. [PMID: 37375442 DOI: 10.3390/pathogens12060752] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 05/16/2023] [Accepted: 05/22/2023] [Indexed: 06/29/2023] Open
Abstract
The present study aimed to test intestinal scrapings of the Northern Goshawk (Accipiter gentilis) and the Eurasian Sparrowhawk (Accipiter nisus) from Lithuania for S. calchasi and other Sarcocystis species characterised by bird-bird life cycles. The protozoan parasite Sarcocystis calchasi can cause respiratory and neurological diseases in a variety of birds; however, the distribution of this parasite is not well-examined. Sarcocystis species were identified with nested PCR and sequencing of the partial ITS1 region. Sporocysts and/or sporulated oocysts of Sarcocystis spp. were observed in 16 (100%) Northern Goshawks and 9 (56.3%) Eurasian Sparrowhawks. Four species, S. columbae, S. halieti, S. turdusi, and S. wobeseri, were confirmed in the Eurasian Sparrowhawk. Apart from the latter four species, S. calchasi, S. cornixi, S. kutkienae, and S. lari were established in the Northern Goshawk. A higher prevalence of Sarcocystis spp. and species richness in Northern Goshawks is associated with the differences in the diet of two examined Accipiter species. This study is the first report of S. calchasi in Lithuania. Furthermore, the genetically distinct species Sarcocystis spp. 23LTAcc, which is most closely related to S. calchasi, was found in three Northern Goshawks.
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Affiliation(s)
- Tautvilė Šukytė
- Nature Research Centre, Akademijos 2, 08412 Vilnius, Lithuania
| | | | | | - Saulius Švažas
- Nature Research Centre, Akademijos 2, 08412 Vilnius, Lithuania
| | - Petras Prakas
- Nature Research Centre, Akademijos 2, 08412 Vilnius, Lithuania
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De Santi M, André MR, Werther K, Gonçalves LR, Soares RM, Herrera HM, Santos FM, Sano NY, Assis WOD, Rucco AC, Machado RZ. Molecular diversity of Sarcocystis spp. in opossums (Didelphis spp.) from Southeastern and Midwestern Brazil. REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA = BRAZILIAN JOURNAL OF VETERINARY PARASITOLOGY : ORGAO OFICIAL DO COLEGIO BRASILEIRO DE PARASITOLOGIA VETERINARIA 2023; 32:e014222. [PMID: 36753190 DOI: 10.1590/s1984-29612023008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 12/15/2022] [Indexed: 02/05/2023]
Abstract
South American opossums (Didelphis spp.) are definitive hosts of Sarcocystis neurona, Sarcocystis speeri, Sarcocystis lindsayi and Sarcocystis falcatula. In Brazil, diverse studies have demonstrated a high frequency of Sarcocystis falcatula-like in sporocysts derived from opossums, and high genetic diversity has been observed in surface antigen-encoding genes (SAGs). In this study, genetic diversity of Sarcocystis spp. derived from Didelphis albiventris and Didelphis aurita from the cities of Campo Grande and São Paulo, was accessed by sequencing SAG2, SAG3, SAG4, the first internal transcribed spacer (ITS-1) and cytochrome c oxidase subunit I (cox1). Molecular identification was performed for 16 DNA samples obtained from sporocyst or culture-derived merozoites. The ITS-1, cox1, and SAG3 fragments were cloned, whereas SAG2 and SAG4 were sequenced directly from PCR products. Four alleles variants were found for SAG2, 13 for SAG3 and seven for SAG4, from which four, 13 and four, respectively, were novel. Twenty-seven allele variants were found for ITS-1, all phylogenetically related to S. falcatula-like previously described in Brazil. Sarcocystis sp. phylogenetically related to Sarcocystis rileyi was evidenced by cox1 in three opossums. Further studies are needed to clarify the role of Didelphis spp. as definitive hosts of Sarcocystis spp. other than that previous described.
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Affiliation(s)
- Mariele De Santi
- Departamento de Patologia, Reprodução e Saúde Única, Faculdade Ciências Agrárias e Veterinárias - FCAV, Universidade Estadual Paulista - UNESP, Jaboticabal, SP, Brasil
| | - Marcos Rogério André
- Departamento de Patologia, Reprodução e Saúde Única, Faculdade Ciências Agrárias e Veterinárias - FCAV, Universidade Estadual Paulista - UNESP, Jaboticabal, SP, Brasil
| | - Karin Werther
- Departamento de Patologia, Reprodução e Saúde Única, Faculdade Ciências Agrárias e Veterinárias - FCAV, Universidade Estadual Paulista - UNESP, Jaboticabal, SP, Brasil
| | | | - Rodrigo Martins Soares
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, Pirassununga, SP, Brasil
| | - Heitor Miraglia Herrera
- Laboratório de Biologia Parasitária, Universidade Católica Dom Bosco - UCDB, Campo Grande, MS, Brasil
| | - Filipe Martins Santos
- Laboratório de Biologia Parasitária, Universidade Católica Dom Bosco - UCDB, Campo Grande, MS, Brasil
| | - Nayara Yoshie Sano
- Programa de Pós-graduação em Ecologia e Conservação, Universidade Federal do Mato Grosso do Sul - UFMS, Campo Grande, MS, Brasil
| | - William Oliveira de Assis
- Laboratório de Biologia Parasitária, Universidade Católica Dom Bosco - UCDB, Campo Grande, MS, Brasil
| | - Andreza Castro Rucco
- Laboratório de Biologia Parasitária, Universidade Católica Dom Bosco - UCDB, Campo Grande, MS, Brasil
| | - Rosangela Zacarias Machado
- Departamento de Patologia, Reprodução e Saúde Única, Faculdade Ciências Agrárias e Veterinárias - FCAV, Universidade Estadual Paulista - UNESP, Jaboticabal, SP, Brasil
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Máca O, González-Solís D. Role of three bird species in the life cycle of two Sarcocystis spp. (Apicomplexa, Sarcocystidae) in the Czech Republic. Int J Parasitol Parasites Wildl 2022; 17:133-137. [PMID: 35070681 PMCID: PMC8761862 DOI: 10.1016/j.ijppaw.2022.01.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 01/04/2022] [Accepted: 01/04/2022] [Indexed: 11/22/2022]
Abstract
Birds are one of the groups involved in the development of Sarcocystis Lankester (1882), serving either as intermediate or definitive hosts. The white-tailed sea eagle Haliaeetus albicilla (Linnaeus, 1758), red kite Milvus milvus (Linnaeus, 1758) (both Accipitriformes) and common starlings Sturnus vulgaris Linnaeus, 1758 (Passeriformes) were examined to elucidate their participation in the development of Sarcocystis, as well as to determine the specific identity of the parasites based on morphological and especially molecular analyses. In 2020-2021, one white-tailed eagle, one red kite and five common starlings were parasitologically examined for the presence of Sarcocystis using flotation centrifugation coprological method and by wet mounts of intestinal mucosa scrapings and/or muscle samples. Positive samples were processed by light microscopy, histologically and followed molecularly at four genetic markers (18S rRNA, 28S rRNA, ITS1 and cox1). The white-tailed eagle harboured oocysts/sporocysts of S. arctica Gjerde et Schulze, 2014 in the intestinal mucosa, while the intestinal mucosa of the red kite and breasts and leg muscles of one common starling were positive to S. halieti Gjerde, Vikøren et Hamnes, 2018. Sequences from eagle shared 99.6-100% identity with each other and S. arctica in the red fox (V. vulpes Linnaeus, 1758) from the Czech Republic. Sequences from the common starling and red kite shared 100% identity with each other and with S. halieti in the great cormorant (P. carbo [Linnaeus, 1758]) from Lithuania and H. albicilla from Norway. The white-tailed sea eagle might act as definitive host of S. arctica, whereas the common starling and red kite represent intermediate and potential definitive hosts, respectively, for S. halieti.
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Affiliation(s)
- Ondřej Máca
- Department of Pathology and Parasitology, State Veterinary Institute Prague, Sídlištní 136/24, 165 03, Prague 6, Czech Republic
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, 165 00, Prague Suchdol, Czech Republic
| | - David González-Solís
- Department of Systematics and Aquatic Ecology, El Colegio de la Frontera Sur, Chetumal, Quintana Roo, Mexico
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Llano HAB, Zavatieri Polato H, Borges Keid L, Ferreira de Souza Oliveira TM, Zwarg T, de Oliveira AS, Sanches TC, Joppert AM, Gondim LFP, Martins Soares R. Molecular screening for Sarcocystidae in muscles of wild birds from Brazil suggests a plethora of intermediate hosts for Sarcocystis falcatula. Int J Parasitol Parasites Wildl 2022; 17:230-238. [PMID: 35282411 PMCID: PMC8914476 DOI: 10.1016/j.ijppaw.2022.03.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Revised: 02/28/2022] [Accepted: 03/01/2022] [Indexed: 12/02/2022]
Abstract
The genus Sarcocystis and the species Toxoplasma gondii are the most prevalent sarcocystid organisms found in birds. Molecular phylogenies based on the first internal transcribed spacer of the ribosomal coding DNA (ITS1) have been widely used to identify them. Here, pectoral muscles from 400 wild birds from Brazil were screened by means of molecular methods using nested PCR, and Sanger sequencing yielded amplicons. A pan-sarcocystid ITS1-directed nested PCR revealed 28 birds infected by Sarcocystis falcatula (ten Piciformes, eight Psittaciformes, five Columbiformes, two Accipitriformes, one Anseriformes, one Passeriformes and one Strigiformes); one infected by Sarcocystis halieti (one Accipitriformes); nine infected by unknown or undescribed Sarcocystis (six Passeriformes, one Piciformes, one Cathartiformes and one Cuculiformes); and six harboring Toxoplasma gondii DNA (three Pelecaniformes, two Falconiformes and one Columbiformes). Samples harboring S. falcatula-related ITS1 sequences were further characterized by means of PCR and sequencing of genetic sequences of three surface antigen coding genes (SAGs). From this, 10 new allelic combinations of SAGs (SAG2, SAG3 and SAG4) were identified, in addition to 11 SAG allelic combinations already found in Brazil. Samples with S. falcatula-unrelated ITS1 sequences were further characterized by means of PCR and sequencing of cytochrome c oxidase subunit I coding sequences (CO1) and 18S ribosomal DNA gene (18S rDNA). This study was the first extensive survey of wild birds in Brazil for Sarcocystidae species. It provides the first molecular evidence of natural S. falcatula infection in 14 species, including in the order Piciformes, and shows the high genetic diversity of S. falcatula in intermediate hosts in South America. Evidence of occurrence of at least three non-described species of Sarcocystis was also presented in this study. This survey corroborated the ubiquity of T. gondii infection but revealed surprisingly low prevalence of this parasite (1.5%). Extensive survey of free-living wild birds in Brazil for Sarcocystidae species. Sarcocystis falcatula was detected in Piciformes birds for the first time. Sarcocystis falcatula has an extensive genetic diversity in Brazil. Three non-described species of Sarcocystis were detected. Sarcocystis halieti was detected for the first time in the Americas.
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Affiliation(s)
- Horwald A B Llano
- Investigation Group (GINVER), School of Veterinary Medicine, Corporación Universitaria Remington, Medellín, Colombia.,Department of Preventive Medicine and Animal Health, School of Veterinary Medicina and Animal Science, University of São Paulo (USP), São Paulo, SP, Brazil
| | - Heloise Zavatieri Polato
- Department of Preventive Medicine and Animal Health, School of Veterinary Medicina and Animal Science, University of São Paulo (USP), São Paulo, SP, Brazil
| | - Lara Borges Keid
- Department of Veterinary Medicine, School of Animal Science and Food Engineering, University of São Paulo (USP), Pirassununga, SP, Brazil
| | | | - Ticiana Zwarg
- The Fauna Division of the Municipal Secretariat for Green and Environment of the Municipality of São Paulo, SP, Brazil
| | - Alice S de Oliveira
- The Fauna Division of the Municipal Secretariat for Green and Environment of the Municipality of São Paulo, SP, Brazil
| | - Thaís C Sanches
- The Fauna Division of the Municipal Secretariat for Green and Environment of the Municipality of São Paulo, SP, Brazil
| | - Adriana M Joppert
- The Fauna Division of the Municipal Secretariat for Green and Environment of the Municipality of São Paulo, SP, Brazil
| | - Luís F P Gondim
- Department of Anatomy, Pathology and Clinics, School of Veterinary Medicine and Animal Science, Federal University of Bahia (UFBA), Salvador, BA, Brazil
| | - Rodrigo Martins Soares
- Department of Preventive Medicine and Animal Health, School of Veterinary Medicina and Animal Science, University of São Paulo (USP), São Paulo, SP, Brazil
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Gondim LFP, Soares RM, Moré G, Jesus RFD, Llano HAB. Sarcocystis neurona and related Sarcocystis spp. shed by opossums (Didelphis spp.) in South America. ACTA ACUST UNITED AC 2021; 30:e006521. [PMID: 34259741 DOI: 10.1590/s1984-29612021059] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 05/31/2021] [Indexed: 11/22/2022]
Abstract
Protozoan parasites of the genus Sarcocystis are obligatory heteroxenous cyst-forming coccidia that infect a wide variety of animals and encompass approximately 200 described species. At least four Sarcocystis spp. (S. falcatula, S. neurona, S. lindsayi and S. speeri) use opossums (Didelphis spp.) as definitive hosts, and two of them, S. neurona and S. falcatula, are known to cause disease in horses and birds, respectively. Opossums are restricted to the Americas, but their distribution in the Americas is heterogeneous. Five Didelphis spp. are distributed in South America (D. aurita, D. albiventris, D. marsupialis, D. imperfecta and D. pernigra) whereas just one opossum species (D. virginiana) is found in North America. Studies conducted in the last decades show that Sarcocystis spp., derived from South American Didelphis spp., have biological and genetic differences in relation to Sarcocystis spp. shed by the North American opossum D. virginiana. The aim of this review was to address the peculiar scenario of Sarcocystis species shed by South American opossums, with a special focus on diagnosis, epidemiology, and animal infections, as well as the genetic characteristics of these parasites.
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Affiliation(s)
- Luís Fernando Pita Gondim
- Departamento de Anatomia, Patologia e Clínicas, Escola de Medicina Veterinária e Zootecnia, Universidade Federal da Bahia - UFBA, Salvador, BA, Brasil
| | - Rodrigo Martins Soares
- Departamento de Medicina Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, São Paulo, SP, Brasil
| | - Gastón Moré
- Consejo Nacional de Investigaciones Científicas y Técnicas - CONICET, Buenos Aires, Argentina.,Laboratorio de Inmunoparasitología, Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina
| | - Rogério Fernando de Jesus
- Departamento de Anatomia, Patologia e Clínicas, Escola de Medicina Veterinária e Zootecnia, Universidade Federal da Bahia - UFBA, Salvador, BA, Brasil
| | - Horwald Alexander Bedoya Llano
- Grupo de Investigación - GINVER, Facultad de Medicina Veterinaria, Corporación Universitaria Remington, Medellín, Colombia
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Rêgo WMFD, Costa JGL, Baraviera RCDA, Pinto LV, Bessa GDL, Lopes REN, Silveira JAGD, Vitor RWA. Sarcocystidae in wild birds of southeastern Brazil. REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA = BRAZILIAN JOURNAL OF VETERINARY PARASITOLOGY : ORGAO OFICIAL DO COLEGIO BRASILEIRO DE PARASITOLOGIA VETERINARIA 2021; 30:e028520. [PMID: 33605391 DOI: 10.1590/s1984-296120201094] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 12/17/2020] [Indexed: 11/22/2022]
Abstract
This study aimed to identify members of the Sarcocystidae family in naturally infected wild birds at a rescue center in the state of Minas Gerais, southeastern Brazil. The heart and brain of 44 wild birds were evaluated by bioassay in mice to detect T. gondii, and extracted DNA was used for nested PCR of the 18S ribosomal DNA gene to detect members of the Sarcocystidae family. The positive samples were sequenced, assembled, edited and compared with sequences deposited in GenBank. Toxoplasma gondii was isolated from six (13.6%) out of 44 birds. Toxoplasma gondii DNA was identified in 10/44 (22.7%) of the birds. The amplified sequences exhibited 100% similarity with the DNA of the ME49 strain of T. gondii. Sarcocystis DNA (99% similarity) was identified in 5/44 (11.4%) of the birds. T. gondii and Sarcocystis spp. are common in wild birds in Minas Gerais, Brazil.
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Affiliation(s)
- Wagner Martins Fontes do Rêgo
- Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais - UFMG, Belo Horizonte, MG, Brasil
| | - Júlia Gatti Ladeia Costa
- Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais - UFMG, Belo Horizonte, MG, Brasil
| | - Ramon Castro de Araujo Baraviera
- Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais - UFMG, Belo Horizonte, MG, Brasil
| | - Lorena Velozo Pinto
- Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais - UFMG, Belo Horizonte, MG, Brasil
| | - Gabriella de Lima Bessa
- Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais - UFMG, Belo Horizonte, MG, Brasil
| | - Rosálida Estevam Nazar Lopes
- Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais - UFMG, Belo Horizonte, MG, Brasil
| | | | - Ricardo Wagner Almeida Vitor
- Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais - UFMG, Belo Horizonte, MG, Brasil
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Acosta ICL, Gennari SM, Llano HAB, Muñoz-Leal S, Soares RM. Molecular Characterization of New Haplotype of Genus Sarcocystis in Seabirds from Magdalena Island, Southern Chile. Animals (Basel) 2021; 11:ani11020245. [PMID: 33498254 PMCID: PMC7909292 DOI: 10.3390/ani11020245] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 01/06/2021] [Accepted: 01/15/2021] [Indexed: 11/16/2022] Open
Abstract
Simple Summary Sarcocystidae is a family of apicomplexan protozoa highly prevalent in vertebrates. The definitive hosts of sarcocystids eliminate oocysts or sporocysts that infect intermediate hosts. After infection, mature tissue cysts (sarcocysts) develop in intermediate hosts, mostly in muscle and neurological tissues. Sarcocysts are infectious for definitive hosts, which acquire them through carnivorous or scavenging habits. Intermediate hosts and definitive hosts are the natural hosts of sarcocystids in which infections are usually mildly or not symptomatic. In 2017, muscular and neurological tissues of 22 birds from Magdalena Islands, southern coast of Chile, were screened for the presence of DNA of sarcocystids. DNA of organisms of the genus Sarcocystis was identified in two Chilean skuas (Stercorarius chilensis). The genetic makeup of the parasite detected in skuas was unprecedented and probably represent a new species in the genus. It is well known that Sarcocystis may cause severe infections in aberrant hosts, which are susceptible animals that do not behave as natural hosts for the parasite and have low resistance to the infection, thus more studies are needed to characterize this parasitosis in skuas and other hosts to understand the epidemiology of the infection and its impact on the health of marine fauna. Abstract Evidence of sarcocystid infection was investigated in samples of 16 penguins (Spheniscus. magellanicus), four Dominican gulls (Larus dominicanus) and two Chilean skuas (Stercorarius chilensis) found in Madalenas Islands, Chile, in 2017. Samples of skeletal muscle, cardiac muscle and brain from all birds were screened by a pan-sarcocystid nested-PCR targeting a short fragment of the gene encoding the small ribosomal unit (nPCR-18Sa). The only two positive samples by nPCR-18Sa, both from skuas, were tested by a nested-PCR directed to the internal transcribed spacer 1 (nPCR-ITS1), also a pan-sarcocystidae nested-PCR, and to a nested-PCR directed to the B1 gene (nPCR-B1), for the exclusive detection of Toxoplasma gondii. The two nPCR-18Sa-positive samples were nPCR-ITS1-positive and nPCR-B1-negative. The nPCR-ITS1 nucleotide sequences from the two skuas, which were identical to each other, were revealed closely related to homologous sequences of Sarcocystis halieti, species found in seabirds of northern hemisphere. Larger fragments of genes encoding 18S and partial sequences of genes coding for cytochrome oxidase subunit 1 were also analyzed, corroborating ITS1 data. The haplotypes found in the skuas are unprecedent and closely related to species that use birds as the definitive host. Further studies need to be carried out to detect, identify and isolate this parasite to understand the epidemiology of the infection and its impact on the health of marine fauna.
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Affiliation(s)
- Igor C. L. Acosta
- Department of Preventive Veterinary Medicine and Animal Health, Faculty of Veterinary Medicine, University of São Paulo, Avenida Prof. Orlando Marques de Paiva, 87, São Paulo CEP 05508-270, Brazil; (S.M.G.); (H.A.B.L.); (S.M.-L.); (R.M.S.)
- Correspondence: or
| | - Solange M. Gennari
- Department of Preventive Veterinary Medicine and Animal Health, Faculty of Veterinary Medicine, University of São Paulo, Avenida Prof. Orlando Marques de Paiva, 87, São Paulo CEP 05508-270, Brazil; (S.M.G.); (H.A.B.L.); (S.M.-L.); (R.M.S.)
- PhD Program in Medicine, Animal Welfare and Public Health, Faculty of Veterinary Medicine, University Santo Amaro, Rua Prof. Enéas de Siqueira Neto, 340, São Paulo CEP 04829-300, Brazil
| | - Horwald A. B. Llano
- Department of Preventive Veterinary Medicine and Animal Health, Faculty of Veterinary Medicine, University of São Paulo, Avenida Prof. Orlando Marques de Paiva, 87, São Paulo CEP 05508-270, Brazil; (S.M.G.); (H.A.B.L.); (S.M.-L.); (R.M.S.)
| | - Sebastián Muñoz-Leal
- Department of Preventive Veterinary Medicine and Animal Health, Faculty of Veterinary Medicine, University of São Paulo, Avenida Prof. Orlando Marques de Paiva, 87, São Paulo CEP 05508-270, Brazil; (S.M.G.); (H.A.B.L.); (S.M.-L.); (R.M.S.)
- Department of Pathology and Preventive Medicine, Faculty of Veterinary Sciences, University of Concepción, Avenida Vicente Mendez, 595, Chillán CEP 3780000, Chile
| | - Rodrigo M. Soares
- Department of Preventive Veterinary Medicine and Animal Health, Faculty of Veterinary Medicine, University of São Paulo, Avenida Prof. Orlando Marques de Paiva, 87, São Paulo CEP 05508-270, Brazil; (S.M.G.); (H.A.B.L.); (S.M.-L.); (R.M.S.)
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Wilson TM, Sousa SKH, Paludo GR, de Melo CB, Llano HAB, Soares RM, Castro MB. An undescribed species of Sarcocystis associated with necrotizing meningoencephalitis in naturally infected backyard chickens in the Midwest of Brazil. Parasitol Int 2020; 76:102098. [PMID: 32120051 DOI: 10.1016/j.parint.2020.102098] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 02/17/2020] [Accepted: 02/26/2020] [Indexed: 11/27/2022]
Abstract
Sarcocistys -associated menigoencephalitis is virtually an unrecognized cause of neurological disease in chickens. An undescribed species of Sarcocystis cause fatal infection in two backyard chickens in the Midwest of Brazil. Infected chickens presented anorexia, weight loss, incoordination, ataxia and opisthotonos. Yellow necrotic foci in the gray and white matter of the telencephalon were the main gross lesion. Microscopically, necrotizing granulomatous and heterophilic meningoencephalitis with intralesional Sarcocystis -like schizonts and mezoites were observed in the central nervous system. Molecular analysis of frozen brain samples of the two chickens was identical and the protozoan was named Sarcocystis sp. Chicken-2016-DF-BR. Complete nested PCR- sequence of Sarcocystis sp. Chicken-2016-DF-BR was equally similar to Sarcocystis anasi (EU553477) and Sarcocystis albifronsi (EU502868). This is the first report of Sarcocistys -associated meningoencephalitis with molecular characterization in backyard chickens.
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Affiliation(s)
- Tais M Wilson
- Laboratório de Patologia Veterinária, Faculdade de Agronomia e Veterinária, Universidade de Brasília, Brasília, DF 70910-900, Brazil
| | - Susy K H Sousa
- Axys Análises Laboratório Veterinário, Porto Alegre, RS 91370-000, Brazil
| | - Giane R Paludo
- Laboratório de Patologia Clínica Veterinária, Faculdade de Agronomia e Medicina Veterinária, Universidade de Brasília, Brasília, DF 70910-900, Brazil
| | - Cristiano B de Melo
- Programa de Pós-Graduação em Ciências Animais, Faculdade de Agronomia e Veterinária, Universidade de Brasília, Brasília, DF 70910-900, Brazil
| | - Horwald A B Llano
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo, São Paulo, SP 05508- 270, Brazil
| | - Rodrigo M Soares
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo, São Paulo, SP 05508- 270, Brazil
| | - Marcio B Castro
- Laboratório de Patologia Veterinária, Faculdade de Agronomia e Veterinária, Universidade de Brasília, Brasília, DF 70910-900, Brazil.
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11
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Prakas P, Butkauskas D, Juozaitytė-Ngugu E. Molecular identification of four Sarcocystis species in the herring gull, Larus argentatus, from Lithuania. Parasit Vectors 2020; 13:2. [PMID: 31907072 PMCID: PMC6945713 DOI: 10.1186/s13071-019-3869-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 12/19/2019] [Indexed: 11/28/2022] Open
Abstract
Background Birds of the family Laridae have not been intensively examined for infections with Sarcocystis spp. To date, sarcocysts of two species, S. lari and S. wobeseri, have been identified in the muscles of gulls. The aim of the present study was to evaluate the species richness of Sarcocystis in the herring gull, Larus argentatus, from Lithuania. Methods In the period between 2013 and 2019, leg muscles of 35 herring gulls were examined for sarcocysts of Sarcocystis spp. Sarcocystis spp. were characterised morphologically based on a light microscopy study. Four sarcocysts isolated from the muscles of each infected bird were subjected to further molecular examination. Sarcocystis species were identified by means of ITS1 sequence analysis. Results Sarcocysts were detected in 9/35 herring gulls (25.7%). Using light microscopy, one morphological type of sarcocysts was observed. Sarcocysts were microscopic, thread-like, had a smooth and thin (about 1 µm) cyst wall and were filled with banana-shaped bradyzoites. On the basis of ITS1 sequences, four Sarcocystis species, S. columbae, S. halieti, S. lari and S. wobeseri, were identified. Furthermore, it was demonstrated that a single infected herring gull could host two Sarcocystis species indistinguishable under light microscopy. Conclusions Larus argentatus is the first bird species found to act as intermediate host of four Sarcocystis spp. According to current knowledge, five species, S. falcatula, S. calchasi, S. wobeseri, S. columbae and S. halieti can use birds belonging to different orders as intermediate hosts. ![]()
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Affiliation(s)
- Petras Prakas
- Nature Research Centre, Akademijos Str. 2, Vilnius, 08412, Lithuania.
| | - Dalius Butkauskas
- Nature Research Centre, Akademijos Str. 2, Vilnius, 08412, Lithuania
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12
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Hammerschmitt ME, Henker LC, Lichtler J, da Costa FVA, Soares RM, Llano HAB, Pavarini SP. First molecular characterization of Sarcocystis neurona causing meningoencephalitis in a domestic cat in Brazil. Parasitol Res 2020; 119:675-682. [PMID: 31901995 PMCID: PMC7088143 DOI: 10.1007/s00436-019-06570-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 12/04/2019] [Indexed: 11/29/2022]
Abstract
Sarcocystis neurona is the main agent associated with equine protozoal myeloencephalitis (EPM). Apart from horses, S. neurona has been occasionally described causing neurologic disease in several other terrestrial animals as well as mortality in marine mammals. Herein, we describe the clinical, pathological, and molecular findings of a fatal case of S. neurona-associated meningoencephalitis in a domestic cat. The causing agent was analyzed by multilocus genotyping, confirming the presence of S. neurona DNA in the tissue samples of the affected animal. Significant molecular differences were found in relation to S. neurona isolates detected in other regions of the Americas. In addition, the parasite was identical to Sarcocystis sp. identified in opossum sporocysts in Brazil at molecular level, which suggests that transmission of. S. neurona in Brazil might involve variants of the parasite different from those found elsewhere in the Americas. Studies including more samples of S. neurona would be required to test this hypothesis, as well as to assess the impact of this diversity.
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Affiliation(s)
- Márcia Elisa Hammerschmitt
- Setor de Patologia Veterinária, Departamento de Patologia Clínica, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9090, Bairro Agronomia, Porto Alegre, RS, 91540-000, Brazil.
| | - Luan Cleber Henker
- Setor de Patologia Veterinária, Departamento de Patologia Clínica, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9090, Bairro Agronomia, Porto Alegre, RS, 91540-000, Brazil
| | - Juliana Lichtler
- Setor de Medicina Felina, Hospital de Clínicas Veterinárias, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9090, Bairro Agronomia, Porto Alegre, RS, 91540-000, Brazil
| | - Fernanda Vieira Amorim da Costa
- Setor de Medicina Felina, Hospital de Clínicas Veterinárias, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9090, Bairro Agronomia, Porto Alegre, RS, 91540-000, Brazil
| | - Rodrigo Martins Soares
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Av. Prof. Dr. Orlando Marques de Paiva, 87, Cidade Universitária, São Paulo, SP, 05508-270, Brazil
| | - Horwald Alexander Bedoya Llano
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Av. Prof. Dr. Orlando Marques de Paiva, 87, Cidade Universitária, São Paulo, SP, 05508-270, Brazil
| | - Saulo Petinatti Pavarini
- Setor de Patologia Veterinária, Departamento de Patologia Clínica, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9090, Bairro Agronomia, Porto Alegre, RS, 91540-000, Brazil
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13
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Gondim LFP, Soares RM, Tavares AS, Borges-Silva W, de Jesus RF, Llano HAB, Gondim LQ. Sarcocystis falcatula-like derived from opossum in Northeastern Brazil: In vitro propagation in avian cells, molecular characterization and bioassay in birds. INTERNATIONAL JOURNAL FOR PARASITOLOGY-PARASITES AND WILDLIFE 2019; 10:132-137. [PMID: 31516824 PMCID: PMC6732708 DOI: 10.1016/j.ijppaw.2019.08.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 08/29/2019] [Accepted: 08/29/2019] [Indexed: 11/28/2022]
Abstract
Most reported isolates of Sarcocystis spp. derived from Brazilian opossums (Didelphis sp.) have genetic characteristics distinct from the known species of Sarcocystis, but behave similarly as Sarcocystis falcatula, as they are infective to budgerigars. In previous studies, these Brazilian isolates, classified as Sarcocystis falcatula-like, were originated from South and Southeast regions of Brazil. In the current work, we aimed to culture and to perform multilocus sequence analysis of Sarcocystis sp. derived from a Brazilian opossum (D. aurita/D. marsupialis) that inhabited the city of Salvador, Bahia, in the Northeast of Brazil. The parasite was isolated in Vero cells, referred here as Sarco-BA1, and propagated in avian cells (DF-1). Molecular analysis of Sarco-BA1 revealed that the nucleotide sequence of the internal transcribed spacer 1 (ITS1) of the rDNA was identical to all isolates (n = 19) of Sarcocystis spp. reported in two studies from South and Southeast regions of the country. Two budgerigars were inoculated with 10 and 1000 sporocysts of Sarco-BA1, respectively, and developed acute sarcocystosis, showing that the parasite behaves like S. falcatula. It was interesting to observe that Sarco-BA1 had almost identical ITS1 and SAG sequences to all 16 isolates of S. falcatula-like recently described in Magellanic penguins (Spheniscus magellanicus) rescued on the coast of Espírito Santo state, Brazil. Our results suggest that Sarco-BA1 and S. falcatula-like may represent a single species of Sarcocystis. Propagation of the parasite in a permanent avian cell line significantly improved the yield of merozoites in cell culture. To our knowledge, this is the first molecular study and in vitro isolation of S. falcatula-like derived from Northeastern Brazil. Studies are under way to determine the infectivity of Sarco-BA1 to other animal species, as well as to investigate serological cross-reactivity among Sarco-BA1, S. neurona and related species. Sarcocystis falcatula-like was isolated for the first time in Northeastern Brazil. Its genetic pattern was similar to isolates from South and Southeastern Brazil. A permanent avian cell line was successfully used to propagate the parasite.
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Affiliation(s)
- Luís F P Gondim
- Departamento de Anatomia, Patologia e Clínicas, Universidade Federal da Bahia, Escola de Medicina Veterinária e Zootecnia, Avenida Adhemar de Barros, 500, Ondina, Salvador, 40170-110, Bahia, Brazil
| | - Rodrigo M Soares
- Departamento de Medicina Veterinária Preventiva e Saúde Animal (VPS), Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo, Av. Prof. Dr. Orlando Marques de Paiva, 87, Cidade Universitária, São Paulo, SP, 05508 270, Brazil
| | - Aline S Tavares
- Departamento de Anatomia, Patologia e Clínicas, Universidade Federal da Bahia, Escola de Medicina Veterinária e Zootecnia, Avenida Adhemar de Barros, 500, Ondina, Salvador, 40170-110, Bahia, Brazil
| | - Waléria Borges-Silva
- Departamento de Anatomia, Patologia e Clínicas, Universidade Federal da Bahia, Escola de Medicina Veterinária e Zootecnia, Avenida Adhemar de Barros, 500, Ondina, Salvador, 40170-110, Bahia, Brazil
| | - Rogério F de Jesus
- Departamento de Anatomia, Patologia e Clínicas, Universidade Federal da Bahia, Escola de Medicina Veterinária e Zootecnia, Avenida Adhemar de Barros, 500, Ondina, Salvador, 40170-110, Bahia, Brazil
| | - Horwald A B Llano
- Departamento de Medicina Veterinária Preventiva e Saúde Animal (VPS), Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo, Av. Prof. Dr. Orlando Marques de Paiva, 87, Cidade Universitária, São Paulo, SP, 05508 270, Brazil
| | - Leane Q Gondim
- Departamento de Medicina Veterinária Preventiva e Saúde Animal (VPS), Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo, Av. Prof. Dr. Orlando Marques de Paiva, 87, Cidade Universitária, São Paulo, SP, 05508 270, Brazil
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Acosta ICL, Soares RM, Mayorga LFSP, Alves BF, Soares HS, Gennari SM. Occurrence of tissue cyst forming coccidia in Magellanic penguins (Spheniscus magellanicus) rescued on the coast of Brazil. PLoS One 2018; 13:e0209007. [PMID: 30562391 PMCID: PMC6298673 DOI: 10.1371/journal.pone.0209007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 11/27/2018] [Indexed: 11/24/2022] Open
Abstract
The main motivation for this study was to determine the occurrence of Toxoplasma gondii, a cosmopolitan widespread zoonotic parasite distribution that can infect a wide variety of mammals and birds, in Magellanic penguins (Spheniscus magellanicus) in Brazil. In recent decades there has been a significant increase in the number of penguins originating from Argentinian and Chilean Patagonia, where these birds are born, that arrive on the Brazilian coast, where many of them are stranded and rescued. Tissue samples were collected from 330 individuals surveyed from 2012–2015 at the Institute for Marine Animal Research and Rehabilitation (IPRAM) located in Cariacica, state of Espirito Santo, Brazil. Serum were collected from 145 animals surveyed in 2015 for the detection of anti-T. gondii antibodies using the Modified Agglutination Test (MAT ≥20) and 18 birds were positive, with titers of 20 (7 birds), 40 (9 birds) and 80 (2 birds). Mouse bioassay for the isolation of T. gondii was performed using tissues from 54 penguins that were also surveyed in 2015, but no isolates were obtained. DNA from tissue samples of 330 individuals was PCR amplified and sequenced to detect tissue cyst forming coccidians by using pan sarcocystids-directed primers (based on 18S rDNA). These samples were from animals surveyed in 2015 and from frozen stocked tissues from animals surveyed in the years 2012 and 2013. The positives were PCR amplified and sequenced with genus Sarcocystis-specific primers (based on internal transcribed spacer 1, RNA polymerase beta subunit coding gene, and cytochrome B coding gene) and with Sarcocystis falcatula/Sarcocystis neurona- specific primers (based on surface antigens SAG2, SAG3 and SAG4). Sixteen (3.0%) of pectoral muscle samples were positive by all the seven molecular markers and all the samples were identical to each other. Organisms close related to Sarcocystis falcatula were confirmed in all cases. This is the first report on molecular detection of infection by S. falcatula-related organisms and the first report of seropositivity for T. gondii in free-living Magellanic penguins in Brazil. Felids and didephid opossums are definitive hosts of T. gondii and S. falcatula, respectively. Where the penguins acquire the infective forms of the parasites shed by the terrestrial mammals remains to be elucidated.
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Affiliation(s)
- Igor Cunha Lima Acosta
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo–USP, São Paulo, SP, Brasil
| | - Rodrigo Martins Soares
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo–USP, São Paulo, SP, Brasil
| | | | - Bruna Farias Alves
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo–USP, São Paulo, SP, Brasil
| | - Herbert Sousa Soares
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo–USP, São Paulo, SP, Brasil
| | - Solange Maria Gennari
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo–USP, São Paulo, SP, Brasil
- Mestrado em Medicina e Bem estar animal, Universidade Santo Amaro, Av. Prof. Eneas de Siqueira Neto, São Paulo, Brazil
- * E-mail:
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MORPHOLOGIC AND GENETIC IDENTIFICATION OF SARCOCYSTIS FULICAE N. SP. (APICOMPLEXA: SARCOCYSTIDAE) FROM THE EURASIAN COOT (FULICA ATRA). J Wildl Dis 2018; 54:765-771. [DOI: 10.7589/2017-11-279] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Morphological and genetic characterisation of Sarcocystis halieti from the great cormorant (Phalacrocorax carbo). Parasitol Res 2018; 117:3663-3667. [PMID: 30229295 DOI: 10.1007/s00436-018-6083-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 09/06/2018] [Indexed: 10/28/2022]
Abstract
Having examined 19 great cormorants (Phalacrocorax carbo) hunted in Lithuania, sarcocysts were found in the muscles of two birds. Sarcocysts detected were examined using light microscopy (LM), transmission electron microscopy (TEM), and 18S rDNA, 28S rDNA, ITS1, cox1, and rpoB sequence comparison. Based on the molecular analysis, mainly of the ITS1 region, sarcocysts were identified as Sarcocystis halieti. This is the first Sarcocystis species characterised in the great cormorant. Under the LM sarcocysts were ribbon-shaped, very long and thin (the largest fragment found amounted to 6.5 × 0.1 mm) with a smooth and thin (up to 1.2 μm) cyst wall. Banana-shaped bradyzoites were 7.2 × 1.9 (6.3-8.2 × 1.4-2.4) μm. Under TEM, the cyst wall was wavy, 0.8- to 1.2-μm thick. The comparison of 12 species demonstrated cox1 and rpoB to be unsuitable for the identification of Sarcocystis spp. using birds as intermediate hosts.
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Cesar MO, Matushima ER, Zwarg T, de Oliveira AS, Sanches TC, Joppert AM, Keid LB, Oliveira TMF, Ferreira HL, Llano HAB, Konradt G, Bianchi MV, Gregori F, Gondim LFP, Soares RM. Multilocus characterization of Sarcocystis falcatula -related organisms isolated in Brazil supports genetic admixture of high diverse SAG alleles among the isolates. Exp Parasitol 2018. [DOI: 10.1016/j.exppara.2018.03.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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