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<p>Tilapia are susceptible to a number of viral diseases that have a severe economic impact in many countries. During a mass mortality event in lakes in central-western Gabon in 2019, the first rhabdoviruses infecting tilapia were identified. Two distinct and nearly complete viral genome sequences were obtained by combining whole-genome sequencing (WGS) and Sanger sequencing of amplicons. The two viruses, which we have named "tilapia rhabdovirus 1" (TiRV1) and "tilapia rhabdovirus 2" (TiRV2), were found coinfecting a single fish. These viruses are related to, but clearly distinct from, members of the subfamily <i>Alpharhabdovirinae</i>. The respective roles of TiRV1 and TiRV2 in the present disease outbreak remain to be clarified. Further studies are needed to evaluate whether these viruses pose a threat to the health of this fish species throughout the region.</p>

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First identification of rhabdoviruses coinfecting tilapia (Oreochromis niloticus) in central-western Gabon

  • 期刊论文

  • 发表日期：

    2025年11月21日

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  • Laurent Bigarré,
  • Andy Nkili Meyong,
  • Illich Manfred Mombo,
  • Larson Boundenga,
  • Michel Audrey Ngonga Dikongo,
  • Telstar Ghestin Ndong Mebaley,
  • Arsène Mabika Mabika,
  • Clency Sylde Mikala Okouyi,
  • Jean Sylvain Koumba,
  • Annicet-Clotaire Dikoumba,
  • Charlotte Balière,
  • Laurent Dacheux,
  • Gaël Darren Maganga

摘要

Tilapia are susceptible to a number of viral diseases that have a severe economic impact in many countries. During a mass mortality event in lakes in central-western Gabon in 2019, the first rhabdoviruses infecting tilapia were identified. Two distinct and nearly complete viral genome sequences were obtained by combining whole-genome sequencing (WGS) and Sanger sequencing of amplicons. The two viruses, which we have named "tilapia rhabdovirus 1" (TiRV1) and "tilapia rhabdovirus 2" (TiRV2), were found coinfecting a single fish. These viruses are related to, but clearly distinct from, members of the subfamily Alpharhabdovirinae. The respective roles of TiRV1 and TiRV2 in the present disease outbreak remain to be clarified. Further studies are needed to evaluate whether these viruses pose a threat to the health of this fish species throughout the region.