Broward County Medical Examiner Craig Mallak said the death of Edward Archbold, 32, of West Palm Beach, was an accident, The Miami Herald reported.
Mallak said Archbold's airway was clogged with "arthropod body parts" and he died of asphyxia. The autopsy ruled out toxic substances as the cause of death, the newspaper said.
Authorities had said previously Archbold had eaten dozens of cockroaches and worms to win an Oct. 5 contest at a Deerfield Beach pet shop. The prize was a female Ivory Ball python valued at $850 the father of two had wanted to give to a friend, the Herald reported earlier.
No other contestants experienced any symptoms, the newspaper said.