Medaka Development: Difference between revisions

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== Introduction ==
== Introduction ==
[[File:Medaka.jpg|thumb|Medaka]]
Medaka Oryzias latipes or Japanese rice fish is a member of the killifish family first described in 1846 and has been widely used as a aquarium fish. A modified aquarium version with a genetically modified fluorescent (GFP) version also now available in some countries.
Medaka Oryzias latipes or Japanese rice fish is a member of the killifish family first described in 1846 and has been widely used as a aquarium fish. A modified aquarium version with a genetically modified fluorescent (GFP) version also now available in some countries.


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'''Links:''' [http://embryology.med.unsw.edu.au/OtherEmb/medaka.htm original Medaka page]
'''Links:''' [http://embryology.med.unsw.edu.au/OtherEmb/medaka.htm original Medaka page]


==Taxon==
==Taxon==

Revision as of 15:48, 14 July 2010

Introduction

Medaka

Medaka Oryzias latipes or Japanese rice fish is a member of the killifish family first described in 1846 and has been widely used as a aquarium fish. A modified aquarium version with a genetically modified fluorescent (GFP) version also now available in some countries.

A recent study by Iwamatsu T., 2004 has characterised the stages of normal fish development.

Medaka fish were also the first for the first vertebrate animal to mate in space (The International Microgravity Laboratory IML-2/STS-65 mission in 1994) as a developmental model for space experiments. The fish has also been used in studies of pigmentation development.

Links: original Medaka page

Taxon

cellular organisms; Eukaryota; Fungi/Metazoa group; Metazoa; Eumetazoa; Bilateria; Coelomata; Deuterostomia; Chordata; Craniata; Vertebrata; Gnathostomata; Teleostomi; Euteleostomi; Actinopterygii; Actinopteri; Neopterygii; Teleostei; Elopocephala; Clupeocephala; Euteleostei; Neognathi; Neoteleostei; Eurypterygii; Ctenosquamata; Acanthomorpha; Euacanthomorpha; Holacanthopterygii; Acanthopterygii; Euacanthopterygii; Percomorpha; Smegmamorpha; Atherinomorpha; Beloniformes; Adrianichthyoidei; Adrianichthyidae; Oryziinae; Oryzias

Development Overview

Development has been characerised by light microscope observation into 39 prehatch stages and 6 posthatch stages.

Prehatch features observed included: number and size of blastomeres, form of the blastoderm, extent of epiboly, central nervous system, number and form of somites, optic and otic, notochord, heart, blood circulation, the size and movement of the body, tail, membranous fin (fin fold), viscera (liver gallbladder, gut tube), spleen and swim (air) bladder.

Posthatch features observed included: fins, scales and secondary sexual characteristics.

References


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Cite this page: Hill, M.A. (2024, May 6) Embryology Medaka Development. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Medaka_Development

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© Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G