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Cetacean morbillivirus in Southern Right Whales, Brazil.

Authors
  • Groch, Kátia R1
  • Groch, Karina R2
  • Kolesnikovas, Cristiane K M3
  • de Castilho, Pedro V4
  • Moreira, Luciana M P5
  • Barros, Cecil R M B5
  • Morais, Camila R2
  • Renault-Braga, Eduardo P2
  • Sierra, Eva6
  • Fernandez, Antonio6
  • Catão-Dias, José L1
  • Díaz-Delgado, Josué1
  • 1 University of São Paulo, São Paulo, Brazil. , (Brazil)
  • 2 Instituto Australis/Projeto Baleia Franca, Imbituba, Brazil. , (Brazil)
  • 3 Associação R3 Animal, Florianópolis, Brazil. , (Brazil)
  • 4 Universidade do Estado de Santa Catarina, Laguna, Brazil. , (Brazil)
  • 5 Área de Proteção Ambiental da Baleia Franca/ICMBio, Imbituba, Brazil. , (Brazil)
  • 6 Universidad de Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain. , (Spain)
Type
Published Article
Journal
Transboundary and emerging diseases
Publication Date
Oct 26, 2018
Identifiers
DOI: 10.1111/tbed.13048
PMID: 30365233
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

Cetacean morbillivirus (CeMV) has caused repeated epizootics and interepizootic fatalities in a variety of cetacean species worldwide. Recently, a novel CeMV strain (GD-CeMV) was linked to a mass die-off of Guiana dolphins (Sotalia guianensis) in Brazil. Southern right whales (SRWs; Eubalaena australis) migrate to the southern Brazilian coast during austral winter and spring (June through November) for breeding and calving. Because unexplained high calf mortality rates have recurrently been documented in SRWs, we hypothesized they could be infected with CeMV. We developed a novel real-time RT-PCR method based on SYBR® GREEN for detection of CeMV and identified the virus in three out of five stranded SRWs from Santa Catarina state, Brazil. The partial sequences of the morbillivirus phosphoprotein gene suggest that the virus is similar to the GD-CeMV strain. Our results indicate CeMV can infect SRWs and should be considered in the differential aetiologic diagnosis of infectious diseases in this species. It also raises concern for potential conservation implications for this species in its main coastal breeding area off Southern Brazil. © 2018 Blackwell Verlag GmbH.

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