WEKO3
アイテム
Artificial breeding and larval rearing techniques to conserve ayu, Plecoglossus altivelis (Plecoglossidae)
http://hdl.handle.net/10069/00041909
http://hdl.handle.net/10069/00041909a67ce533-0502-47ef-9a82-09c2d407140f
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
AACLB15_2763.pdf (1.9 MB)
|
|
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2022-11-29 | |||||
| タイトル | ||||||
| タイトル | Artificial breeding and larval rearing techniques to conserve ayu, Plecoglossus altivelis (Plecoglossidae) | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | artificial breeding | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | ayu | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | larval rearing | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | larviculture | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Ryukyu-ayu | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| 著者 |
Ha, Linh Manh
× Ha, Linh Manh× Iguchi, Kei’ichiro |
|||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Ex-situ conservation, which is important to protect critically endangered species, requires special artificial breeding and rearing techniques during the early life stages of a species. This study describes the artificial breeding and larval rearing techniques to conserve ayu (Plecoglossus altivelis), an important fish that is endangered in some locations. Fish eggs and milt were acquired from mature fish by gently pressing the fish abdomen; subsequently, artificial insemination was performed by gentle mixing. The fertilized eggs were then incubated in running freshwater (for approximately 14 days). After hatching, the larvae were placed in brackish water (ca. 10‰ salinity; 7-8 mg L-1 dissolved oxygen) to maintain live food to the larvae. From the 1st to 35th day after hatching (DAH), the larvae were fed with live rotifers. Subsequently, from the 15th DAH onwards, the larvae were fed with brine shrimp nauplii along with rotifers and were familiarized with artificial food. After the fish gained a body length of 4-5 cm and started consuming 0.5-0.8 mm formulated food grain, they were transferred to a fingerling nursery with freshwater for further cultivation. This study also noticed that the susceptible stages of ayu larvae were at approximately 14-16th and 40-45th DAH. This work provides necessary information to design a conservation plan for the ayu population in the southern distribution range of this species where it is currently facing threats of extinction, such as in Vietnam. Additionally, the study describes the rotifer culturing technique that can assist in conducting larviculture. | |||||
| 書誌情報 |
AACL Bioflux 巻 15, 号 6, p. 2763-2774, 発行日 2022-11-07 |
|||||
| 出版者 | ||||||
| 出版者 | BIOFLUX SRL | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 18448143 | |||||
| 権利 | ||||||
| 権利情報 | This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution and reproduction in any medium, provided the original author and source are credited. | |||||
| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| 引用 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | AACL Bioflux, 15(6), pp.2763-2774; 2022 | |||||
