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Comparative Ultrastructures of the Fertilized Egg Envelopes in Danio rerio and Danio rerio var. frankei, Cyprinidae, Teleostei
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  • Journal title : Applied Microscopy
  • Volume 43, Issue 1,  2013, pp.14-20
  • Publisher : Korean Society of Electron Microscopy
  • DOI : 10.9729/AM.2013.43.1.14
 Title & Authors
Comparative Ultrastructures of the Fertilized Egg Envelopes in Danio rerio and Danio rerio var. frankei, Cyprinidae, Teleostei
Joo, Kyung Bok; Kim, Dong Heui;
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 Abstract
The leopard danio, Danio rerio var. frankei is a spotted color morph of the zebrafish, Danio rerio caused by a pigment mutation. The structural differences of fertilized egg and egg envelope are poorly documented. To clarify this, we compared the fertilized egg morphology and ultrastructures of surface structures, the micropyle and the cross section of fertilized egg envelopes of zebrafish and leopard danio, variation species of zebrafish using a light and electron microscopes. Although the fertilized egg sizes were different, the external shapes of the fertilized eggs of two species couldn't be differentiated under the light microscope. The characteristics of fertilized eggs, such as a spherical shape, a non-adhesive quality and a large perivitelline space, were shown to be related to spawning habit. In ultrastructure of fertilized egg envelope, there is no morphological difference of micropyle between two species. By contrast, the ultrastructure and the numbers of knob-like structures and semihemisphere-like structures per unit area on the outer surface, and the number of lamellae of inner layer on the fertilized egg envelope section displayed definite species specificity. Collectively, our data indicate that the ultrastructure of fertilized egg envelope in the zebrafish could be differentiated by species variation.
 Keywords
Fertilized egg envelope;Zebrafish;Leopard danio;Ultrastructure;
 Language
English
 Cited by
1.
Spermatogenesis of Siamese Fighting Fish, Betta splendens, Osphronemidae, Teleostei,;;;;

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, Nothobranchiidae, Teleostei, Applied Microscopy, 2017, 47, 2, 70  crossref(new windwow)
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