| Item type |
デフォルトアイテムタイプ_（フル）(1) |
| 公開日 |
2023-03-18 |
| タイトル |
|
|
タイトル |
An Attempt at Captive Breeding of the Endangered Newt Echinotriton andersoni, from the Central Ryukyus in Japan |
|
言語 |
en |
| 作成者 |
Igawa, Takeshi
Sugawara, Hirotaka
Tado, Miyuki
Nishitani, Takuma
Kurabayashi, Atsushi
Islam, Mohammed Mafizul
Oumi, Shohei
Katsuren, Seiki
Fujii, Tamotsu
Sumida, Masayuki
|
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利情報 |
|
|
権利情報 |
© 2013 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/). |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
captive breeding |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
endangered newt |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
natural monument |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
IUCN Red List |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
Echinotriton andersoni |
| 主題 |
|
|
主題Scheme |
NDC |
|
主題 |
480 |
| 内容記述 |
|
|
内容記述 |
Anderson’s crocodile newt (Echinotriton andersoni) is distributed in the Central Ryukyu Islands of southern Japan, but environmental degradation and illegal collection over the last several decades have devastated the local populations. It has therefore been listed as a class B1 endangered species in the IUCN Red List, indicating that it is at high risk of extinction in the wild. The species is also protected by law in both Okinawa and Kagoshima prefectures. An artificial insemination technique using hormonal injections could not be applied to the breeding of this species in the laboratory. In this study we naturally bred the species, and tested a laboratory farming technique using several male and female E. andersoni pairs collected from Okinawa, Amami, and Tokunoshima Islands and subsequently maintained in near-biotopic breeding cages. Among 378 eggs derived from 17 females, 319 (84.4%) became normal tailbud embryos, 274 (72.5%) hatched normally, 213 (56.3%) metamorphosed normally, and 141 (37.3%) became normal two-month-old newts; in addition, 77 one- to three-year-old Tokunoshima newts and 32 Amami larvae are currently still growing normally. Over the last five breeding seasons, eggs were laid in-cage on slopes near the waterfront. Larvae were raised in nets maintained in a temperature-controlled water bath at 20 °C and fed live Tubifex. Metamorphosed newts were transferred to plastic containers containing wet sponges kept in a temperature-controlled incubator at 22.5 °C and fed a cricket diet to promote healthy growth. This is the first published report of successfully propagating an endangered species by using breeding cages in a laboratory setting for captive breeding. Our findings on the natural breeding and raising of larvae and adults are useful in breeding this endangered species and can be applied to the preservation of other similarly wild and endangered species such as E. chinhaiensis. |
|
言語 |
en |
| 内容記述 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
This work was supported by Grants-in-Aid for Scientific Research (B and C) (Nos. 24310173 and 20510216) to Masayuki Sumida and a Grant-in-Aid for Young Scientists (B) (No. 23710282) to Takeshi Igawa from the Ministry of Education, Culture, Sports, Science and Technology, Japan. |
| 出版者 |
|
|
出版者 |
MDPI AG |
| 言語 |
|
|
言語 |
eng |
| 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 |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 関連情報 |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
10.3390/ani3030680 |
| 関連情報 |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.3390/ani3030680 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
2076-2615 |
| 開始ページ |
|
|
開始ページ |
680 |
| 書誌情報 |
Animals
Animals
巻 3,
号 3,
p. 680-692,
発行日 2013-07-31
|
| 旧ID |
46464 |
Animals_3_680.pdf (759.5 KB)
