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Intussusception in a Florida manatee.

D J Forrester, F H White, J C Woodard

    Journal of Wildlife Diseases
    |October 1, 1975
    PubMed
    Summary
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    A Florida manatee died from an intussusception caused by ingesting a fishhook and fishing line. Necropsy revealed parasitic and bacterial infections, along with pesticide residues.

    Area of Science:

    • Marine Mammal Pathology
    • Wildlife Toxicology
    • Fisheries Science

    Background:

    • Manatees (Trichechus manatus latirostris) face threats from marine debris and pollution.
    • Ingestion of foreign objects can cause severe gastrointestinal distress and mortality in marine wildlife.

    Purpose of the Study:

    • To determine the cause of death in a specific Florida manatee.
    • To document pathological findings, including infectious agents and environmental contaminants.

    Main Methods:

    • Necropsy and histopathological examination of the deceased manatee.
    • Bacteriological, parasitological, and toxicological analyses of tissues and gut contents.

    Main Results:

    • Intussusception caused by an embedded fishhook and fishing line was identified as the primary cause of death.

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  • Presence of Edwardsiella tarda bacteria, pesticide residues (DDE, PCBs, dieldrin), and the parasite Chiorchis fabaceus were documented.

    • Conclusions:

    • Fishing gear and associated environmental contaminants pose a significant threat to manatee survival.
    • Comprehensive necropsy and diagnostic analyses are crucial for understanding mortality causes in endangered marine species.