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language
eng
Author
NOSKOR Sukumar Chandra
Takiue, Shunpei
Description
This report advances the phylogenetic hierarchy in teleosts with regard to micro?hepatic architecture. To demonstrate the correlation between liver structures and phylogenic status, we analyzed livers from nine teleost taxa using light and scanning electron microscope and subjected the data to phylogenic analysis. We observed that the hepatocytes were spread out as anastomotic cords, arranged in two to several cellular layers, and surrounded by sinusoids. We also found that in many species within the three infradivisions, hepatocyte nuclei were not centrally located, unlike the hepatocyte nuclei of mammals. The parenchymal arrangement evolved in parallel with phylogenic advancement. As phylogenic branching is graded in ascending order from the primary or secondary type to the final level, the parenchymal arrangements progressed from solid or tubular to cord?like, and the shape of hepatocytes changed from round to square and/or polyhedral. Thus, the hepatic lobular structures of the Euteleostei livers were more complete and of an advanced type, similar to that of mammalian livers. A phylogenic study of fish may be valid as an optimal model for liver ontogeny in vertebrates.
Subject
evolution
liver
morphology
phylogeny
teleost
Journal Title
島根大学生物資源科学部研究報告
Volume
18
Start Page
9
End Page
16
ISSN
13433644
Published Date
2013-09-30
NCID
AA1112906X
Publisher
島根大学生物資源科学部
NII Type
Departmental Bulletin Paper
Format
PDF
Text Version
出版社版
Gyoseki ID
e17758
OAI-PMH Set
Faculty of Life and Environmental Science
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