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Saturday, October 26, 2013

Embryonic development of goldfish (Carassius auratus): A model for the study of evolutionary change in developmental mechanisms by artificial selection.

Embryonic development of goldfish (Carassius auratus): A model for the study of evolutionary change in developmental mechanisms by artificial selection.

Authors

Tsai HY, Chang M, Liu SC, Abe G, Ota KG.

Journal

Dev Dyn. 2013 Nov;242(11):1262-83. doi: 10.1002/dvdy.24022. Epub 2013 Sep 6.

Affiliation

Laboratory of Aquatic Zoology, Marine Research Station, Institute of Cellular and Organismic Biology, Academia Sinica, Yilan, Taiwan; The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian, United Kingdom.

Abstract

Background: Highly divergent morphology among the different goldfish strains (Carassius auratus) may make it a suitable model for investigating how artificial selection has altered developmental mechanisms. Here we describe the embryological development of the common goldfish (the single fin Wakin), which retains the ancestral morphology of this species. Results: We divided goldfish embryonic development into seven periods consisting of 34 stages, using previously reported developmental indices of zebrafish and goldfish. Although several differences were identified in terms of their yolk size, epiboly process, pigmentation patterns, and development rate, our results indicate that the embryonic features of these two teleost species are highly similar in their overall morphology from the zygote to hatching stage. Conclusions: These results provide an opportunity for further study of the evolutionary relationship between domestication and development, through applying well-established zebrafish molecular biological resources to goldfish embryos. Developmental Dynamics 242:1262-1283, 2013. © 2013 Wiley Periodicals, Inc.

Thursday, October 17, 2013

"FishNure" Dewatering box idea for Dave "BlueBelly" Mandley


Tuesday, October 15, 2013

Historic goldfish dissection plates circa 1790

A recent addition to the collection. Two original plates from Histoire Naturele circa  1790. 
Here's the description:
This exquisite copperplate engraving is from Histoire Naturele by the Cmte. de Buffon. It was published in Paris from 1749 to 1804. This plate dates c.1780. The paper is watermarked, hand laid and of excellent quality. It is an off white/cream color. The plate is blank verso. Plate size is 8.5 x 11in. Any shadows are just that and do not appear in scan. The images are crisp and dark! They are much darker than they appear in the scan. The copper plate engraving of this work is of superior quality! These engravings are truely rare! Because these were all printed by hand some of the images may not have been printed square to the paper. Many of my plates from this work have moisture stains to top left and right edges. Otherwise clean. 



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