Massasauga rattlesnake bites in Iowa

Area of Science:

• Herpetology
• Toxicology
• Ecology

Background:

• Massasauga rattlesnakes (Sistrurus catenatus) are venomous snakes found in Iowa.
• Historically, their bites have been considered less severe compared to other rattlesnake species.

Observation:

• A notable incident in eastern Iowa in 1990 involved a massasauga rattlesnake bite.
• This specific bite resulted in a life-threatening condition known as thrombocytopenia.

Findings:

• The 1990 bite case demonstrated a severe systemic reaction, specifically a critical drop in platelet count.
• This contrasts with the generally mild historical record of swamp rattlesnake envenomation in the region.

Implications:

• The findings underscore the potential for severe envenomation from massasauga rattlesnakes, even in areas where bites are historically mild.
• Conservation efforts for the limited massasauga populations in Iowa are crucial due to their potential medical significance.