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Growth rates, relative growth and a potential aging method using vertebral centra in Silurus biwaensis(Siluriformes: Siluridae)
https://doi.org/10.15083/00038780
https://doi.org/10.15083/0003878003ba9f27-389b-4612-a1cd-57a03a07bbd2
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
KJ00000046665.pdf (806.8 kB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2007-04-05 | |||||
| タイトル | ||||||
| タイトル | Growth rates, relative growth and a potential aging method using vertebral centra in Silurus biwaensis(Siluriformes: Siluridae) | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Silurus biwaensis | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | growth | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | age | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | proportion | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | vertebral centra | |||||
| 資源タイプ | ||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||
| タイプ | departmental bulletin paper | |||||
| ID登録 | ||||||
| ID登録 | 10.15083/00038780 | |||||
| ID登録タイプ | JaLC | |||||
| 著者 |
Takai, Noriyuki
× Takai, Noriyuki× Kitagawa, Takashi× Kobayakawa, Midori× Mitsunaga, Yasushi× Maehata, Masayoshi× Sakamoto, Wataru |
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| 著者所属 | ||||||
| 著者所属 | Faculty of Science, Kyushu University | |||||
| 著者所属 | ||||||
| 著者所属 | Faculty of Agriculture, Kyoto University | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Relative growth and relationship between age and growth in Silurus biwaensis were examined on the basis of the body size data of the catfish collected from Lake Biwa and the reared catfish which were hatched from artificially inseminated eggs. Although it had been reported that the proportion of head length to body length increased with growth in S. biwaensis, such a relationship was not found for 218 catfish that were examined in this study. On the other hand, the proportion of head length to head width significantly decreased with SL in females. This result indicated that the narrow head shape peculiar to S. biwaensis becomes slightly squarer in bigger females. The three catfish reared from the hatching grew to 196-410mm SL for 2.7 years (73-152mm/yr). This growth rate was in contrast with that of a tagged adult male, which grew only 50mm from 460mm SL to 510mm SL in the lake for two years (25mm/yr). These results suggested that the growth of the adults might extremely slow down after the fast growth at the immature stage. This study also reported that the number of transparent zones in vertebral centra of S. biwaensis increased with growth. The vertebral centrum may possibly be utilized as an age indicator for this species and the other kinds of Silurid. | |||||
| 書誌情報 |
Otsuchi marine science = 東京大学海洋研究所大槌臨海研究センター研究報告 巻 28, p. 45-51, 発行日 2003-03-28 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 13448420 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA11358599 | |||||
| フォーマット | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | application/pdf | |||||
| 日本十進分類法 | ||||||
| 主題Scheme | NDC | |||||
| 主題 | 452 | |||||
| 出版者 | ||||||
| 出版者 | Otsuchi Marine Research Center, Ocean Research Institute, the University of Tokyo | |||||
| 出版者別名 | ||||||
| 東京大学海洋研究所大槌臨海研究センター | ||||||
