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Pathologic findings in manatees in Florida

Insights

Environmental factors, including human-inflicted trauma and cold winters, were the primary causes of mortality in West Indian manatees (Trichechus manatus). Natural diseases rarely caused death in the studied population.

Area of Science:

  • Marine Mammal Science
  • Wildlife Pathology
  • Conservation Biology

Background:

  • The West Indian manatee (Trichechus manatus) is a vulnerable marine mammal species facing various threats.
  • Understanding mortality factors is crucial for effective conservation strategies.

Observation:

  • Necropsy and microscopic examinations were performed on 16 West Indian manatees.
  • The study aimed to determine the causes of death in this population.

Findings:

  • Environmental factors were the leading cause of mortality in most manatees examined.
  • Human-inflicted trauma and adverse weather conditions (cold winters) were significant contributing factors.
  • Natural disease processes were identified as the cause of death in only one individual.
  • The cause of death remained undetermined in three manatees.

Implications:

  • Findings highlight the significant impact of anthropogenic and environmental stressors on manatee populations.
  • Conservation efforts should prioritize mitigating human-related threats and addressing climate change impacts.
  • Further research may be needed to understand undetermined mortality cases.

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