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Diseases of Aquatic Organisms

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DAO 148:13-18 (2022)  -  DOI:

Myeloid and histiocytic sarcomas in subantarctic fur seals Arctocephalus tropicalis, Brazil

Laura Reisfeld1,2,*, Natália C. C. A. Fernandes2,3, Angélica Sarmiento2, Paloma Canedo1, Fernanda Salvagni4, Ana Carolina Ewbank2, Tomas Zecchini Barrese3, Cesar Cilento Ponce3, Rodrigo Albergaria Ressio3, José Luiz Catão-Dias2, Carlos Sacristán2

1Aquário de São Paulo, São Paulo, Rua Huet Bacelar 407, 04275-000 SP, Brazil
2Laboratory of Wildlife Comparative Pathology, Pathology Department, School of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo, 05508-270 SP, Brazil
3Instituto Adolfo Lutz, Av. Dr Arnaldo 355, 01246-000 SP, Brazil
4Laboratório Provet, Av. Aratãs, 1009 SP, Brazil
*Corresponding author:

ABSTRACT: Histopathological and immunohistochemical methods were used to diagnose round cell tumors in 2 subantarctic fur seals Arctocephalus tropicalis with marked anemia. Although wild-born, both individuals were placed under human care while juveniles in a Brazilian aquarium. Both pinnipeds were PCR tested for herpesvirus, and 1 was infected with otariid gammaherpesvirus 5 (OtHV-5), previously described in a subantarctic fur seal stranded in Brazil. Although some gammaherpesviruses can cause sarcomas and other neoplasms, it was not possible to definitively associate OtHV-5 with the neoplasm. To our knowledge, these are the first neoplasm records in subantarctic fur seals.

KEY WORDS: Neoplasia · Herpesvirus · Oncology · Pinniped · South America

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Cite this article as: Reisfeld L, Fernandes NCCA, Sarmiento A, Canedo P and others (2022) Myeloid and histiocytic sarcomas in subantarctic fur seals Arctocephalus tropicalis, Brazil. Dis Aquat Org 148:13-18.

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