Zebrafish Anatomical Dictionary

Structure description: Parhypural

by Paula Mabee and Nathan C. Bird

Name: Parhypural

Abbreviation: phy

Synonyms: synonyms

Figures:

hypurals (larval, 4mm)

hypurals (larval, 5.8mm)

hypurals (adult)

Description: The cartilaginous precursor of the parhypural appears ventral to the posterior tip of the notochord at early larval stages (~3.9 mm notochord length, ~5 d). The parhypural is the last hemal spine through which the ventral aorta passes. The parhypural will support fin rays of the caudal fin. The parhypurapophyses (also "hypurapophyses") are the paired bony lateral extensions off the hemal arch of the parhypural. They serve as origin for the anterolateral bundle of the hypochordal longitudinal muscle (Lundberg and Baskin 1969).

Homologues:

• Human: none
• Mouse: none
• Chicken: none
• Frog: none
• Fly: none

Stages:

• First appears at: early larval, 3.9 mm (notochord length)
• Disappears (or changes name)by: ossifies later in development, present in adult

Parents (forms from): sclerotome

Children:

• Presumptive (thought to give rise to): present in adult
• Anlage (known to give rise to): present in adult

Group (member of):

• Anatomical (group member): caudal fin skeleton
• Functional (group member): unspecified

Markers:

• mRNA:
  
• Antibodies:
  
• Other: Alcian Blue (cartilage) and Alizarin red (bone)

Publications:

• Primary: Mabee, P.M. and Bird, N.B. (2001) A preliminary description of the anatomy and development of the zebrafish axial skeleton. ZFIN Direct Data Submission.
• Secondary:

  Ferreri et al., J. Fish Biol. 56:1115-1128 (2000)

  Dingerkus and Uhler, Stain Technology 52: 229-232 (1977)

  Lundberg JG, Baskin JN (1969) The Caudal Fin Skeleton of the Catfishes, Order Siluriformes. American Museum Novitates

  Potthoff, In Ontogeny and Systematics of Fishes, vol. 1 (ed. H. G. Moser) Spec. Pub. Am. Soc. Icthyol. Herp, (1984).

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