Precaudal vertebrae
In fish, the precaudal vertebra (also known as the precaudal vertebra ) is the vertebra that is located after the head and does not have a hemispherical spine . ( Weitzman , 1962). The term generally refers to the anterior , i.e. front, vertebral area in the area of the abdominal cavity. As an alternative, but not entirely synonymous , the term abdominal vertebrae, which carry the parapophysis (process on the underside of vertebrae) and ribs, is occasionally used. The transitional vertebrae of many ray-fins , without ribs and without hemispheric mandrel, but sometimes with hemic arches, are also referred to as pre-caudal vertebrae. With the precaudal vertebra, all vertebrae in front of the caudal vertebrae are meant.
Individual evidence
- ↑ Ernst Ahl: To the knowledge of the bony fish family Chaetodontidae, in particular the subfamily Chaetodontinae. Archive for Natural History, 89, Department A, 5, pp. 1–200, 1923, p. 185
- ↑ ZFIN - The Zebrafish Model Organism Database: precaudal vertebra
- ↑ FishBase Glossary: precaudal vertebrae
further reading
- Paula M. Mabee, Nathan C. Bird: Developmental morphology of the axial skeleton of the zebrafish, Danio rerio (Ostariophysi: Cyprinidae). In: Developmental Dynamics, Special Issue: Zebrafish as a Model System. Vol. 228, 3, pp. 337-357. November 2003. ( Online with picture of the zebrafish skeleton , page 339.)
Web links
- Illustration precaudal vertebrae at researchgate.net