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 Image Credit: Museum of New Zealand Te Papa Tongarewa (CC BY 4.0)

Watch a clip of an acanthocephalan here.

An unidentified acanthocephalan extending and retracting its spiny proboscis.

Video Credit: Fossa (YouTube Creative Commons License) 


(Spiny/Throny-headed Worms)

Chapter: Ctenophores: Welcome


What makes an acanthocephalan an acanthocephalan?

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    Acanthocephala (formerly a phylum)​ - All parasitic. Adults are endoparasites that live in the small intestines of their definitive (final) vertebrate hosts. In an aquatic environment, intermediate hosts are usually arthropods, final hosts are usually fishes. In a terrestrial environment, paratenic hosts include lizards and amphibians, definitive hosts vary.
    Reference(s): 1, 2, 3, 4, 5, 6, 7

Chapter: Ctenophores: Text


Chapter: Acanthocephalans

Background Information

Total discovered species:

Commonly Associated Terms

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Evolutionary History & Adaptation

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Conservation and Threats

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Additional Resources

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Chapter: Ctenophores: List

Chapter Advisors and Contributors

Avatar 85

John Doe
PhD Entomology

Lead Researcher at Bugtopia

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James Doe
MSc Insect Pest Management

Termite Specialist

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Ann Doe
MSc Aquatic Entomology

Entomologist at BugTech

Chapter: Ctenophores: Our Team
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