An evolutionary aspect to horseshoe crabs based on develomental capacity of the interspecific hybrids.
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- SUGITA H.
- Institute of Biological Sciences, University of Tsukuba
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- SEKIGUCHI K.
- Institute of Biological Sciences, University of Tsukuba
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- SHISHIKURA F.
- Institute of Biological Sciences, University of Tsukuba
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- YAMAMICHI Y.
- Institute of Biological Sciences, University of Tsukuba
Bibliographic Information
- Other Title
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- カブトガニの種間雑種の発生と系統
- カブトガニ ノ シュカン ザッシュ ノ ハッセイ ト ケイトウ
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Abstract
The four extant horseshoe crabs are morphologically so similar to fossil specimens of the genus Mesolimulus that one has referred to them as "living fossils". The recent horseshoe crabs are assigned to two subfamilies, that is, Limulinae and Tachypleinae. The Limulinae includes only one American species, Limulus polyphemus and the Tachypleinae includes three Asian species, Tachypleus tridentatus, T. gigas and Carcinoscorpius rotundicauda. The hybridization experiments revealed that the fertilization could not be accomplished between Limulus and Asian species gametes, while three Asian horseshoe crabs were cross-fertilizable one another. Developmental capacity of hybridized eggs among the three Asian species was not equivalent, suggesting that one had rather not assign three Asian horseshoe crabs to such two diverse genera as Tachypleus and Carcinoscorpius in the current taxonomy. These results are in concord with the idea that American and Asian horseshoe crabs diverged from a common European ancestor (or separate ancestral species) and that the three extant Asian horseshoe crabs diverged from a common Asian ancestor.
Journal
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- Proceedings of the Japanese Society of Systematic Zoology
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Proceedings of the Japanese Society of Systematic Zoology 22 (0), 1-6, 1982
The Japanese Society of Systematic Zoology
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Details 詳細情報について
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- CRID
- 1390282679691020160
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- NII Article ID
- 110002339211
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- NII Book ID
- AN00166758
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- ISSN
- 2189728X
- 02870223
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- NDL BIB ID
- 2451310
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed