Retarded Growth of Hexaploid Loaches
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- HORIE Shin
- Graduate School of Fisheries Sciences, Hokkaido University
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- TANIURA Kou
- Kobe City Municipality
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- UMINO Tetsuya
- Graduate School of Biosphere Sciences, Hiroshima University
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- NAKAGAWA Heisuke
- Graduate School of Biosphere Sciences, Hiroshima University
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- ARAI Katsutoshi
- Graduate School of Fisheries Sciences, Hokkaido University
Bibliographic Information
- Other Title
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- 六倍体ドジョウの成長低下
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Abstract
In the lach Misgurnus anguillicaudatus, hexaploid individuals were produced by chromosome manipulation to inhibit the second polar body release after the fertilization of diploid eggs from natural tetraploid female by sperm from tetraploid male. Eggs of mature hexaploid (6n) female were fertilized by sperm of diploid (2n), tetraploid (4n) and hexaploid (6n) males, respectively, to produce tetraploid (6n female×2n male), pentaploid (6n×4n) and hexaploid (6n×6n) progeny. Each group was reared in a separate tank until the age of 1 year old and then long-term communal rearing experiments from the age of 1 year old to 3 years and 2 months old were carried out to compare performance of tetraploid, pentaploid and hexaploid loaches under a laboratory condition. At the end of experiments, significantly retarded growth was observed in hexaploid loaches and they exhibited about half body weight of counterpart tetraploid and pentaploid loaches. Hexaploid loaches also showed significantly lower body length/head length proportion than other polyploids.
Journal
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- Aquaculture Science
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Aquaculture Science 52 (3), 279-286, 2004
Japanese Society for Aquaculture Science
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Details 詳細情報について
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- CRID
- 1390001204717157504
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- NII Article ID
- 10013653795
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- NII Book ID
- AN00124667
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- ISSN
- 21850194
- 03714217
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- HANDLE
- 2115/35211
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- NDL BIB ID
- 7115833
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- Text Lang
- en
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- Data Source
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- JaLC
- IRDB
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed