Style_(zoology)

Style (zoology)

Style (zoology)

Rod made of glycoprotein located in the midgut of most bivalves and some gastropods

A style, sometimes referred to as a crystalline style, is a rod made of glycoprotein located in the midgut of most bivalves and some gastropods which aids in extracellular digestion. It consists of a protein matrix coated with digestive enzymes secreted by the style sac in the animal's stomach. When feeding, its projecting end is scraped against the stomach wall and abraded, thus releasing the enzymes.[1]

Mussel of the genus Anodonta, with style ("st") shown in black
Mussel of the genus Lampsilis, with style ("st") shown in cross-section

When subjected to starvation or desiccation, some bivalves have been known to re-ingest this organ.[2]

References

  1. [1]
    Ruppert, Edward E.; Barnes, Robert D. (1994). "The Molluscs". Invertebrate Zoology (6th ed.). Saunders College Publishing. pp. 436. ISBN 0030266688.
  2. [2]
    Hameed, P. Shahul (1987). "In vivo dissolution and reformation of crystalline style in certain intertidal bivalve molluscs". Mahasagar Bulletin of the National Institute of Oceanography. 20 (2): 135–138.


Stub icon

This mollusc-related article is a stub. You can help Wikipedia by expanding it.
Share this article:

This article uses material from the Wikipedia article Style_(zoology), and is written by contributors. Text is available under a CC BY-SA 4.0 International License; additional terms may apply. Images, videos and audio are available under their respective licenses.