Historical isolates of dolphin morbillivirus: origin and new data

Marie-Françoise Van Bressem1, Juan Antonio Raga, Mariano Domingo

  • 1Cetacean Conservation Medicine Group, Peruvian Centre for Cetacean Research, Museo de Delfines, Lima 20, Peru.

PubMed

Insights

Dolphin morbillivirus (DMV) caused a lethal epidemic in Mediterranean striped dolphins. This study clarifies the origin and provides new data on DMV isolates from the 1990-1992 epidemic.

Area of Science:

  • Veterinary Virology
  • Marine Mammal Health
  • Epidemiology

Background:

  • Dolphin morbillivirus (DMV) caused a severe epidemic in striped dolphins (Stenella coeruleoalba) in the Mediterranean Sea between 1990-1992.
  • Thousands of striped dolphins died during this epidemic along the Spanish coast.
  • Existing records for DMV isolates (MUC, 16A, reference strain) are often difficult to trace and contain errors regarding their origin.

Purpose of the Study:

  • To provide previously unpublished biological and histopathological data for DMV isolates.
  • To consolidate and summarize existing literature on the characterization of these DMV strains.
  • To offer recommendations for future research on DMV and its impact on marine mammals.

Main Methods:

  • Isolation and characterization of Dolphin morbillivirus (DMV) from affected striped dolphins.
  • Histopathological examination of tissues from stranded dolphins.
  • Literature review and data compilation on DMV isolates.

Main Results:

  • Presentation of novel biological and histopathological findings for key DMV isolates.
  • Summary of the known characterization data for MUC, 16A, and reference DMV strains.
  • Identification of discrepancies and gaps in the documented origin of these isolates.

Conclusions:

  • Clarification of the origin and characteristics of important DMV isolates is crucial for understanding past epidemics.
  • Further research is needed to fully elucidate DMV's epidemiology and pathogenesis in marine cetaceans.
  • Accurate record-keeping and data sharing are essential for future disease surveillance and response efforts.

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