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Home / Resources / Zebrafish / Fishface / Arch / FishFace

FishFace

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Skull Anatomy

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Arch 1 & 2 Development

• Pharyngeal development: Pre-skeletal
• Pharyngeal development: Skeletal

Element Development

• The palatoquadrate: associated bones and articulations
• Meckel’s cartilage: associated bones and articulations
• The hyosymplectic: associated bones and articulations
• The ceratohyal: associated bones and articulations
• The opercle: associated bones and articulations

4 dpf Development

[ Back to The opercle: associated bones and articulations]

Info	Image Please hold mouse over images to see annotations.
4 dpf sp7:EGFP Alizarin red	Lateral Movie(s): 4 dpf opercle lateral movie
Description	By 96 hpf, the opercle (op) has begun to undergo a considerable shape change characterized by the addition of osteoblasts to the anterior and posterior of the ventral tip, producing a fan-shaped array of cells. The pre-existing, linear portion of the opercle has expanded slightly in width and remains flanked by osteoblasts. By this time, the most posterior branchiostegal ray 3 (bsr3) appears as a linear strut of bone surrounded by osteoblasts. The anterior tip of branchiostegal ray 3 attaches externally to the ceratohyal cartilage (not visible here). Faint EGFP-derived fluorescence throughout the image is derived from transgene expression in the ectoderm.