Minute Protrusions of Ascidian Tunic Cuticle : Some Implications for Ascidian Phylogeny

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概要

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• Fine structure of the ascidian tunic cuticle was studied by transmission and scanning electron microscopy in 26 species belonging to 10 families. In 11 species of 8 families, the cuticular surface is ornamented with numerous minute protrusions that are papillate in shape and usually up to 100 nm in height. The present results in addition to the previous ones [1] gave us more information about morphology of protrusions and their distribution in 51 species ranging over 13 families out of the 15 ones of ascidians. It reveals a general tendency that the protrusions occur in the limited families and related species have the protrusions of similar size. Thus, the protrusions proved to have some features of certain phylogenetic significance in many cases. Brief references were made to the taxonomic position of such problematic genera as Pterygascldia in the Cionidae and Sorbera in the Hexacrobylidae on the basis of the present study.

• 社団法人日本動物学会の論文
• 1992-04-15

著者

• Saito Yasunori

  Shimoda Marine Research Center, University of Tsukuba

• Hirose E

  Univ. The Ryukyus Okinawa Jpn

• Hirose Euichi

  Shimoda Marine Research Center University Of Tsukuba : (present Address)department Of Biology Keio U

• Hirose Euichi

  Biological Laboratory College Of Agriculture And Veterinary Medicine Nihon University

• Saito Y

  Shimoda Marine Research Center University Of Tsukuba

• Saito Yasunori

  Shimoda Marine Research Center University Of Tsukuba

• Watanabe H

  Toyama Medical And Pharmaceutical Univ. Toyama Jpn

• WATANABE Hiroshi

  Shimoda Marine Research Center,University of Tsukuba

• NISHIKAWA TERUAKI

  Biological Laboratory, College of General Education, Nagoya University

• Nishikawa Teruaki

  Biological Laboratory College Of General Education Nagoya University

• Saito Yasunori

  Shimoda Marine Research Center Univ. Of Tsukuba

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