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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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Marcinczyk M, Songsasen N, Hammond EE, DeCesare G, Rodden M, McAloose D. A RETROSPECTIVE STUDY OF DISEASE PROCESSES IN MANED WOLVES ( CHRYSOCYON BRACHYURUS) IN NORTH AMERICAN ZOOLOGICAL INSTITUTIONS WITH EMPHASIS ON UROLITHIASIS, INFLAMMATORY BOWEL DISEASE, AND NEOPLASIA. J Zoo Wildl Med 2024; 54:681-691. [PMID: 38251991 DOI: 10.1638/2023-0024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/10/2023] [Indexed: 01/23/2024] Open
Abstract
The objective of this retrospective study is to summarize causes of disease and mortality in maned wolves (Chrysocyon brachyurus) in the North American Species Survival Plan Program (SSP) population. This information will inform and enhance animal health, husbandry, and conservation efforts. Pathology reports were requested from all zoological institutions housing maned wolves between 1930 and 2021. Data were reviewed and cause of death (COD) and reported diseases were summarized and compared by age group, organ system and disease process. One hundred and seventy-one wolves, 82 females and 89 males, met the inclusion criteria. The majority were geriatric (>11 yr; n = 96) or adult (2-11 yr; n = 67). Noninfectious diseases were the most common COD by process (n = 94; 54.9%). For COD by organ system, diseases of the digestive (n = 41) and urinary (n = 34) systems were most common. Neoplasia was the most common noninfectious COD and was the primary COD in 37 wolves (21.6% overall; 39.4% of noninfectious diseases). A total of 145 benign (n = 72) and malignant (n = 73) neoplasms were diagnosed in 44 individuals. Dysgerminoma was the most commonly reported tumor (n = 18), and was the most common neoplastic COD (n = 8). Cystinuria or urolithiasis (n = 71) and gastritis, enteritis, enterocolitis, or colitis (n = 50) (overall and grouped in each system due to presumed common underlying cause) were also common but were more often reported as comorbidities than as COD (n = 16 and n = 11, respectively). Infectious COD were reported in 17 wolves and included babesiosis (n = 4), acanthocephalans (n = 2), and one viral infection. Infections with a variety of bacteria in different organ systems were a COD in eight wolves.
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Affiliation(s)
| | | | | | | | - Melissa Rodden
- Smithsonian Conservation Biology Institute, Front Royal, VA 22630, USA
| | - Denise McAloose
- Wildlife Conservation Society, Zoological Health Program, Bronx, NY 10460, USA,
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DiGeronimo PM, Enright C, Ziemssen E, Keller D. FATAL GASTRIC DILATATION AND VOLVULUS IN THREE CAPTIVE JUVENILE LINNAEUS'S TWO-TOED SLOTHS ( CHOLOEPUS DIDACTYLUS). J Zoo Wildl Med 2023; 54:211-218. [PMID: 36971647 DOI: 10.1638/2022-0040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/16/2022] [Indexed: 03/29/2023] Open
Abstract
Linnaeus's two-toed sloth (Choloepus didactylus) is one of two extant neotropical species of the family Megalonychidae. Despite their being commonly kept under managed care, the digestive physiology of sloths remains poorly understood. Gastrointestinal disease has been reported as a primary or contributing cause of morbidity and mortality in captive two-toed and three-toed (Bradypus spp.) sloths. Gastric dilatation due to gas accumulation ("bloat") has been reported in sloths; however, a literature search failed to yield any published mention of gastric volvulus in any sloth species. Following an inquiry sent to the electronic mailing lists of the American Association of Zoo Veterinarians, the European Association of Zoo and Wildlife Veterinarians, and the LatinVets community, three cases of fatal gastric dilatation and volvulus (GDV) were identified in one male and two female Linnaeus's two-toed sloths from institutions in the United States, Canada, and Germany. All cases occurred in juvenile sloths <1 yr of age. Two animals were primarily hand reared, whereas one was reared primarily by its dam. Two animals were found dead with no overt premonitory signs, whereas one animal died following a 3-wk course of waxing and waning clinical signs consistent with gastric gas accumulation. In all cases, GDV was diagnosed on postmortem examination. Similar to other species, the condition is likely subsequent to a combination of host- and husbandry-related contributing factors. Further research into sloth husbandry is required in order to take an evidence-based approach to their management.
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Affiliation(s)
| | | | - Eva Ziemssen
- Zoo Dresden, Tiergartenstrasse 1 D-01219 Dresden, Germany
| | - Dominique Keller
- Los Angeles Zoo and Botanical Gardens, Los Angeles, CA 90027, USA
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Kim KT, Lee H, Kwak D. Enhanced Asymptomatic Systemic Infection Caused by Plesiomonas shigelloides in a Captive Gray Wolf ( Canis lupus). Vet Sci 2021; 8:vetsci8110280. [PMID: 34822653 PMCID: PMC8625515 DOI: 10.3390/vetsci8110280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 11/02/2021] [Accepted: 11/13/2021] [Indexed: 12/02/2022] Open
Abstract
A 7-year-old male gray wolf was found dead at a zoo during exhibition. To determine the cause of death, histological and gross necropsy diagnoses and a molecular analysis were performed. The gross necropsy revealed a swollen abdomen, hemorrhagic exudates around the mouth, splenomegaly, a discolored liver, a congested kidney, hemorrhagic ascites, and dark gray-colored membranes and air bubbles in the fundus of the stomach. Rod-shaped bacteria were found in the liver parenchyma and hemorrhagic ascites using Giemsa staining. The nucleotide sequencing of the cultured bacteria identified the causative agent as Plesiomonas shigelloides, which is rarely responsible for systemic infections. This study describes a rare case and the first reported systemic gastrointestinal infection due to P. shigelloides in a zoo animal.
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Affiliation(s)
- Kyoo-Tae Kim
- Animal Health Center of Zoo Land, Daejeon O-World Theme Park, Jung-gu, Daejeon 35073, Korea;
- Siberian Tiger Conservation Center, Baekdudaegan National Arboretum, Bonghwa-gun, Gyeongbuk 36209, Korea
| | - Haeseung Lee
- Department of Veterinary Medicine, College of Veterinary Medicine, Kyungpook National University, Buk-gu, Daegu 41566, Korea;
| | - Dongmi Kwak
- Department of Veterinary Medicine, College of Veterinary Medicine, Kyungpook National University, Buk-gu, Daegu 41566, Korea;
- Cardiovascular Research Institute, College of Medicine, Kyungpook National University, Jung-gu, Daegu 41944, Korea
- Correspondence:
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Piras IS, Perdigones N, Zismann V, Briones N, Facista S, Rivera JL, Rozanski E, London CA, Hendricks WPD. Identification of Genetic Susceptibility Factors Associated with Canine Gastric Dilatation-Volvulus. Genes (Basel) 2020; 11:genes11111313. [PMID: 33167491 PMCID: PMC7694454 DOI: 10.3390/genes11111313] [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: 10/02/2020] [Revised: 10/29/2020] [Accepted: 10/31/2020] [Indexed: 12/16/2022] Open
Abstract
Canine gastric dilatation-volvulus (GDV) is a common life-threatening condition occurring primarily in large and giant breeds with a 3.9% to 36.7% lifetime risk. The genetic correlates of GDV have not previously been systematically explored. We undertook an inter-breed genome-wide association analysis (GWAS) of 253 dogs from ten breeds including 106 healthy dogs and 147 dogs with at least one GDV episode. SNP array genotyping followed by imputation was conducted on 241 samples to identify GDV-associated single-nucleotide polymorphisms (SNPs) and copy number variations (CNVs). A subset of 33 dogs (15 healthy dogs and 18 GDV patients from the three most represented breeds) was characterized by whole genome sequencing (WGS). After genome-wide Bonferroni correction, we identified a significant putatively protective intergenic SNP (rs851737064) across all breeds. The signal was most significant in Collies, German Shorthaired Pointers, and Great Danes. Subsequent focused analysis across these three breeds identified 12 significant additional putatively protective or deleterious SNPs. Notable significant SNPs included those occurring in genes involved in gastric tone and motility including VHL, NALCN, and PRKCZ. These data provide important new clues to canine GDV risk factors and facilitate generation of hypotheses regarding the genetic and molecular underpinnings this syndrome.
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Affiliation(s)
- Ignazio S. Piras
- Neurogenomics Division, Translational Genomics Research Institute, Phoenix, AZ 85004, USA;
| | - Nieves Perdigones
- Integrated Cancer Genomics Division, Translational Genomics Research Institute, Phoenix, AZ 85004, USA; (N.P.); (V.Z.); (N.B.); (S.F.); (J.L.R.)
| | - Victoria Zismann
- Integrated Cancer Genomics Division, Translational Genomics Research Institute, Phoenix, AZ 85004, USA; (N.P.); (V.Z.); (N.B.); (S.F.); (J.L.R.)
| | - Natalia Briones
- Integrated Cancer Genomics Division, Translational Genomics Research Institute, Phoenix, AZ 85004, USA; (N.P.); (V.Z.); (N.B.); (S.F.); (J.L.R.)
| | - Salvatore Facista
- Integrated Cancer Genomics Division, Translational Genomics Research Institute, Phoenix, AZ 85004, USA; (N.P.); (V.Z.); (N.B.); (S.F.); (J.L.R.)
| | - José Luis Rivera
- Integrated Cancer Genomics Division, Translational Genomics Research Institute, Phoenix, AZ 85004, USA; (N.P.); (V.Z.); (N.B.); (S.F.); (J.L.R.)
| | - Elizabeth Rozanski
- Cummings School of Veterinary Medicine, Tufts University, Grafton, MA 01536, USA; (E.R.); (C.A.L.)
| | - Cheryl A. London
- Cummings School of Veterinary Medicine, Tufts University, Grafton, MA 01536, USA; (E.R.); (C.A.L.)
| | - William P. D. Hendricks
- Integrated Cancer Genomics Division, Translational Genomics Research Institute, Phoenix, AZ 85004, USA; (N.P.); (V.Z.); (N.B.); (S.F.); (J.L.R.)
- Correspondence:
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