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Updated: Sep 25, 2025
09:45
Harvesting Venom Toxins from Assassin Bugs and Other Heteropteran Insects
Published on: April 21, 2018
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Avian Toxins and Poisoning Mechanisms
Kara A Yeung1, Peter R Chai2,3,4,5, Brendan L Russell2
1Harvard Affiliated Emergency Medicine Residency (HAEMR) Program, Mass General Brigham, Boston, MA, USA.
Summary
Certain bird species acquire toxins, posing rare but serious risks to humans. This review details toxic avian species, their poisons, and human health impacts.
Area of Science:
- Zoology
- Toxicology
- Avian Biology
Background:
- Some bird species worldwide possess toxic chemicals, deterring predators or causing harm upon contact.
- Human exposure to poisonous birds is infrequent but can lead to significant clinical effects.
Purpose of the Study:
- To review seven specific avian species known for their toxicity.
- To detail their geographic distribution, toxin sources, and physiological effects.
- To examine human toxicity cases and the birds' self-protection mechanisms.
Main Methods:
- Conducted a comprehensive literature search on toxic avian species.
- Focused on seven species: pitohuis, blue-capped ifrita, European quail, spur-winged goose, ruffed grouse, brush bronzewings, hoopoes, and woodhoopoes.
- Analyzed toxin physiology, origin, clinical signs, and acquisition methods.
Main Results:
- Most toxic bird encounters result in mild human symptoms due to infrequent consumption.
- European quail and North American ruffed grouse are notable exceptions due to consumption.
- Toxin acquisition is primarily diet-based, except for hoopoes and woodhoopoes, which utilize symbiotic bacteria.
Conclusions:
- Avian toxins present diverse physiological and toxicological profiles.
- Understanding toxin acquisition and effects is crucial for assessing risks.
- This review offers insights into avian toxicology and evolutionary adaptations.
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