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(in some bryozoans) any of a number of modified zooids that bear a long whip-like seta, serving to prevent other organisms from settling on the colony.Compare with avicularium
- ‘In Ectoprocta there are similar specialized zooids, avacularia, vibracula, and gonozooids.’
- ‘Other zooids include the avicularia, where the operculum has been modified into a jaw, and the vibracula where the operculum has been modified into a bristle.’
- ‘They may be polymorphic with ovicells, vibracula, kenozooids, and/or avicularia in addition to autozooids.’
- ‘Some species are provided with avicularia and vibracula; some with avicularia alone, and a few with vibracula alone.’
- ‘In other species of bryozoan, ‘protective’ individuals called vibracula have the shape of a long bristle which moves like a whip; other species have protective spines at the open end of a branch.’
Mid 19th century: modern Latin, from Latin vibrare (see vibrate).
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