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Diseases of Aquatic Organisms

    DAO prepress abstract   -  DOI:

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

    Laura Reisfeld*, Natália C. C. A. Fernandes, Angélica Sarmiento, Paloma Canedo, Fernanda Salvagni, Ana Carolina Ewbank, Tomas Zecchini Barrese, Cesar Cilento Ponce, Rodrigo Albergaria Ressio, José Luiz Catão-Dias, Carlos Sacristán

    *Corresponding author:

    ABSTRACT: Histopathological and immunohistochemical methods were used to diagnose round cell tumors in two 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 one 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.