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Vetter Hiebert JR, Petters Cabrera JG, Benítez del Puerto S, González Vatteone R, Florentín Morel M, Dacak Aguilera DA, Brítez Valinotti CE, Ramírez Diarte R, González González LM, Coronel Díaz C, Osorio P, Cardozo W, Bracho F, Soto CR, Domínguez Barreto NM, Sciabarrasi AA. Rescue and rehabilitation of maned wolf (Chrysocyon brachyurus) in Paraguay: Case description. Vet Med Sci 2024; 10:e1395. [PMID: 38459818 PMCID: PMC10924275 DOI: 10.1002/vms3.1395] [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: 06/29/2023] [Revised: 01/25/2024] [Accepted: 02/08/2024] [Indexed: 03/10/2024] Open
Abstract
The maned wolf, Chrysocyon brachyurus, is the largest South American canid, with a natural distribution that stretches across Peru, Bolivia, Brazil, Argentina, Paraguay and Uruguay. The present study reports the case of a rescued specimen of maned wolf that underwent a rehabilitation process in Paraguay, starting in October 2020 with its rescue, and finalising in May 2021 with the reintroduction. Herein, we document findings regarding the general management, biometrics, feeding and environmental enrichment; chemical immobilisation and monitoring; haematology, blood biochemistry and specific serology-relevant pathogens; skin examination and bone marrow cytology; orthopaedic, ophthalmological and dental evaluation; abdominal and cardiac ultrasonography; radiology and copro-parasitology. Main findings include the feeding habits of the individual and enrichment opportunities. The animal weighed 7 kg on arrival, with an estimated age of 5 months, and 18 kg on reintroduction, with an estimated age of 1 year. The animal tested negative to serologic tests for Brucella canis, Dirofilaria, canine distemper, Toxoplasmosis and canine parvovirus. Leptospira testing showed antibodies against L. grippotyphosa on both samplings, L. wolffi and L. ictero on the first sampling, and L. pomona on the second sampling. Abdominal organs were examined and measured through ultrasound evaluation and kidneys showed no alterations. Echocardiography showed preserved mitral, tricuspid and aortic valve flows, but turbulent pulmonary valve flow. Copro-parasitology reported the presence of Lagochilascaris sp. and Balantidium sp. All the information gathered aided in diagnosing the health status of the individual, and the response to environmental enrichment helped assess the behaviour, which led to the suggestion of reintroducing the animal. These data constitute the first published health check of a maned wolf in Paraguay, which can contribute to the species' conservation in the country. The protocol presented in this study can serve as a basis for developing an action plan for the maned wolf in Paraguay.
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Affiliation(s)
- Joerg Richard Vetter Hiebert
- Departamento de Recursos Faunísticos y Medio NaturalFacultad de Ciencias VeterinariasUniversidad Nacional de AsunciónSan LorenzoParaguay
| | | | | | - Roger González Vatteone
- Facultad de Ciencias VeterinariasCátedra de Técnica OperatoriaUniversidad Nacional de AsunciónSan LorenzoParaguay
| | | | | | | | | | | | - Carlos Coronel Díaz
- Ministerio del Ambiente y Desarrollo SostenibleDirección General de Protección y Conservación de la BiodiversidadDirección de Vida SilvestreAsunciónParaguay
| | | | | | - Fátima Bracho
- Facultad de Ciencias VeterinariasUniversidad Nacional de AsunciónSan LorenzoParaguay
| | - Claudia Raquel Soto
- Facultad de Ciencias VeterinariasUniversidad Nacional de AsunciónSan LorenzoParaguay
| | | | - Antonio Alejandro Sciabarrasi
- Facultad de Ciencias VeterinariasUniversidad Nacional del LitoralSanta FeArgentina
- Centro de rescate e interpretación de la Fauna La EsmeraldaGobierno de Santa FeArgentina
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Rosa RB, Bianchi MV, Ribeiro PR, Argenta FF, Vielmo A, de Sousa FAB, Piva MM, Pohl CB, Daoualibi Y, Cony FG, Brunner CB, Von Hohendorff R, Sonne L. Comparison of immunohistochemical profiles of ovarian germ cells in dysgerminomas of a captive maned wolf and domestic dogs. J Vet Diagn Invest 2021; 33:772-776. [PMID: 34047229 DOI: 10.1177/10406387211019959] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
We characterized the immunohistochemical expression profiles of dysgerminomas from a 16-y-old maned wolf and 13 domestic dogs using the following biomarkers: Sal-like protein 4 (SALL4), octamer-binding transcription factor 3/4 (OCT3/4), placental alkaline phosphatase (PLAP), c-kit, and vimentin. The maned wolf had nonspecific and long-standing clinical signs of lethargy, anorexia, and weight loss, and was euthanized because of poor prognosis. At autopsy, the left ovary was effaced by a 12 × 8 × 6 cm mass, comprised of anaplastic cells with a mitotic count of 20 mitoses in 10 high power fields. Dysgerminomas from 7 of 13 domestic dogs had nuclear expression of SALL4. Dysgerminomas from the maned wolf and 2 domestic dogs had both nuclear and cytoplasmic expression of SALL4. Cytoplasmic expression of PLAP and OCT3/4 was present in dysgerminomas from the maned wolf and 3 (PLAP) or 4 (OCT3/4) domestic dogs. All dysgerminomas expressed vimentin. Membranous c-kit expression was rare in the dysgerminoma from the maned wolf, and variable in dysgerminomas from 4 domestic dogs. A dysgerminoma from a domestic dog had cytoplasmic expression of c-kit. SALL4 is a useful marker to confirm germ cell origin of dysgerminoma in canids.
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Affiliation(s)
- Rafael B Rosa
- Setor de Patologia Veterinária, Departamento de Patologia Clínica Veterinária, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Matheus V Bianchi
- Setor de Patologia Veterinária, Departamento de Patologia Clínica Veterinária, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Paula R Ribeiro
- Setor de Patologia Veterinária, Departamento de Patologia Clínica Veterinária, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Fernando F Argenta
- Setor de Patologia Veterinária, Departamento de Patologia Clínica Veterinária, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Andréia Vielmo
- Setor de Patologia Veterinária, Departamento de Patologia Clínica Veterinária, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Felipe A B de Sousa
- Setor de Patologia Veterinária, Departamento de Patologia Clínica Veterinária, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Manoela M Piva
- Setor de Patologia Veterinária, Departamento de Patologia Clínica Veterinária, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Camila B Pohl
- Setor de Patologia Veterinária, Departamento de Patologia Clínica Veterinária, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Yasmin Daoualibi
- Setor de Patologia Veterinária, Departamento de Patologia Clínica Veterinária, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Fernanda G Cony
- Setor de Patologia Veterinária, Departamento de Patologia Clínica Veterinária, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Carolina B Brunner
- Setor de Patologia Veterinária, Departamento de Patologia Clínica Veterinária, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Raquel Von Hohendorff
- Fundação Zoobotânica do Rio Grande do Sul, Zoológico de Sapucaia do Sul, Sapucaia do Sul, Rio Grande do Sul, Brazil
| | - Luciana Sonne
- Setor de Patologia Veterinária, Departamento de Patologia Clínica Veterinária, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
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Dentigerous Equine Teratoma in a Stallion: Surgical Management and Clinicopathology. Vet Sci 2021; 8:vetsci8050084. [PMID: 34068130 PMCID: PMC8152738 DOI: 10.3390/vetsci8050084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 05/08/2021] [Accepted: 05/12/2021] [Indexed: 02/02/2023] Open
Abstract
Teratoma is a rare germ cell testicular cancer composed of cells that are not normally present in the site where it originates. These tumors are rarely described in horses, where they may develop due to cryptorchidism. Teratomas consist of cells originating from different germinal layers, arising from germinal multi-potential cells with differentiation defects, and can simultaneously contain several tissues from two or more embryonic layers. Testicular teratomas are described in horses, cats, dogs, wild boars, bulls, and humans. In the rare descriptions found in literature of testicular teratoma in stallions, they occur frequently in cryptorchid testicles, as a consequence of congenital neoplasm. To our knowledge there is no other report of a dentigerous equine teratoma in a stallion. We describe here a successful laparoscopic removal of a testicular teratoma and its clinic-pathological features.
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