Histological Differences between the Color Patterns of Two Strains of the Compound Ascidian Polyandrocarpa misakiensis

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概要

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• We examined histological differences between the color patterns of two strains of the compound styelid ascidian Polyandrocarpa misakiensis. Two strains in this species show different color patterns. In the white-spot strain, each zooid has a large white spot on its dorsal side between the branchial and atrial siphons. In the spotless strain, each zooid has a fine white band, instead of the circular spot, between the siphons. Thin-layer chromatography on their pigments showed that there is no qualitative difference between the two strains. Observation of cryostat sections revealed that the differences between the color patterns of the two strains were mainly based on the distribution of red pigments in the epidermal layer. The area that lacks red pigments forms a circular white spot in the white-spot strain or a fine white band in the spotless strain on the dorsal side. In this area, white pigment cells (a type of blood cell), which are distributed in the mesenchymal space, can be seen through the epidermal layer.

• 社団法人日本動物学会の論文
• 1993-12-15

著者

• Saito Yasunori

  Shimoda Marine Research Center, University of Tsukuba

• Saito Yasunori

  筑波大学

• Saito Yasunori

  Shimoda Marine Research Center University Of Tsukuba

• Ishii T

  Akita Univ. Akita Jpn

• Taneda Yasuho

  横浜国立大学

• Ishii Teruhisa

  Shimoda Marine Research Center, University of Tsukuba

• Taneda Yasuho

  Department of Biology, Faculty of Education, Yokohama National University

• Taneda Y

  横浜国立大学

• Ishii Teruhisa

  Shimoda Marine Research Center University Of Tsukuba

• Saito Yasunori

  Shimoda Marine Research Center Univ. Of Tsukuba

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