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Related Experiment Video

Updated: Jun 9, 2026

A Cryoinjury Model for Studying Skeletal Muscle Regeneration of the Caudal Peduncle in Adult Zebrafish
07:29

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Published on: July 7, 2023

Postmortem injuries inflicted by crawfish: morphological and histological aspects.

S Duband1, F Forest, A Clemenson

  • 1Department of Forensic Medicine, Saint-Etienne University Hospital Center, Bellevue Hospital, 42055 St-Etienne, Cedex 2, France. sebastien.duband@chu-st-etienne.fr

Forensic Science International
|September 4, 2010
PubMed
Summary

Postmortem scavenging by crawfish (Austropotamobius pallipes) can cause injuries resembling assault. Autopsy revealed these facial lesions were caused by aquatic animal predation, not foul play.

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Area of Science:

  • Forensic Science
  • Aquatic Ecology
  • Zoology

Background:

  • A deceased 60-year-old woman was discovered in an artificial lake.
  • Initial observations noted numerous crawfish near the body, particularly around the face, abdomen, and hands.

Observation:

  • The cadaver exhibited extensive hemorrhagic lesions on the face, eyelids, lips, and neck.
  • These injuries were initially suspected by investigators to be the result of a criminal assault.

Findings:

  • Autopsy analysis confirmed the facial injuries were postmortem defects.
  • The lesions were attributed to scavenging activity by crawfish (Austropotamobius pallipes).
  • Macro- and microscopic examination detailed the effects of animal predation on the body.

Implications:

  • This case highlights the importance of considering animal scavenging in postmortem examinations.
  • Distinguishing between antemortem trauma and postmortem animal activity is crucial in forensic investigations.
  • Understanding aquatic invertebrate predation patterns aids in accurate cause of death determination.