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Related Experiment Videos

Monk seal mortality: virus or toxin?

A Osterhaus1, M van de Bildt, L Vedder

  • 1Erasmus University Hospital Rotterdam, Institute of Virology, The Netherlands. Osterhaus@viro.fgg.eur.nl

Vaccine
|July 31, 1998
PubMed
Summary

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A mysterious disease outbreak killed over half of the endangered Mediterranean monk seal population. A morbillivirus, similar to dolphin morbillivirus, was identified as the cause, suggesting vaccination as a conservation strategy.

Area of Science:

  • Marine Mammal Health
  • Conservation Virology

Background:

  • A significant die-off event affected the endangered Mediterranean monk seal population (Monachus monachus) in the Saharan Atlantic.
  • The outbreak's characteristics resembled previous pinniped and cetacean disease events linked to morbilliviruses.

Purpose of the Study:

  • To investigate the cause of a mysterious mass mortality event in Mediterranean monk seals.
  • To identify the etiological agent responsible for the high mortality rate in this endangered species.

Main Methods:

  • Epizootiological and postmortem examinations of deceased seals.
  • Virological and toxicological analyses of tissue samples from fresh carcasses.

Main Results:

  • Findings indicated a morbillivirus infection closely related to dolphin morbillivirus (DMV).

Related Experiment Videos

  • The virus likely originated from an infected dolphin population in the same geographic area.

    • Conclusions:

    • Infection with a DMV-like morbillivirus was identified as the primary cause of the monk seal mortality.
    • Vaccination using a non-replicating vaccine is proposed as a crucial management strategy for Mediterranean monk seal conservation.