Awnworm
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- Anchored Life
- Subcategory
- Worms
- Entries in Worms
- 2
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- 181
PDA entry
- Awnworm (Ventworm awn). Dwells in hot, mineral-rich water, where its plumes collect hydrogen sulfide and other minerals from the environment. Can survive near-boiling temperatures.
- 1. Segmented plumes
- Each upper body segment grows five blood-rich plumes which collect minerals and pump them to the worm's body. Bacteria feed on these minerals, producing energy for the worm. Each segment contains its own miniature heart.
- 2. Sticky shelter
- The worm grows from its holdfast, a chitinous shelter at its base. The entire awnworm can withdraw into this tiny space if threatened by temperature changes or attack.
- 3. Curious immortality
- The awnworm has no reproductive organs or cells. The worm appears to bud off its uppermost segments, like a stack of jellyfish. These segments find a new holdfast and grow a new awnworm. This strategy should produce genetically identical clones. It does not. Awnworms are genetically distinct. The source of this genetic difference is unknown.
- 4. A ventworm blight?
- Many of the scanned specimen's pores are choked by thick, waxy fatty acids. Origin unknown.
- Assessment: monitor awnworms for clues to reproductive cycle and environmental threats.
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