Abstract
Stinging mechanisms generally deliver venomous compounds to external targets. However, nematocysts, the microscopic stinging organelles that are common to all members of the phylum Cnidaria, occur and act in both external and internal tissue structures. This is the first report of such an internal piercing mechanism. This mechanism identifies prey items within the body cavity of the sea anemone and actively injects them with cytolytic venom compounds. Internal tissues isolated from sea anemones caused the degradation of live Artemia salina nauplii in vitro. When examined, the nauplii were found to be pierced by discharged nematocysts. This phenomenon is suggested to aid digestive phagocytic processes in a predator otherwise lacking the means to masticate its prey.
Original language | English |
---|---|
Pages (from-to) | 1063-1067 |
Number of pages | 5 |
Journal | Proceedings of the Royal Society B: Biological Sciences |
Volume | 276 |
Issue number | 1659 |
DOIs | |
State | Published - 22 Mar 2009 |
Externally published | Yes |
Keywords
- Digestion
- Internal stinging mechanism
- Nematocyst
- Sea anemone
- Venom
ASJC Scopus subject areas
- General Biochemistry, Genetics and Molecular Biology
- General Immunology and Microbiology
- General Environmental Science
- General Agricultural and Biological Sciences