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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Veterinary Medicine / Faculty of Veterinary Medicine >
Peer-reviewed Journal Articles, etc >
Accessory corpora lutea formation in pregnant Hokkaido sika deer (Cervus nippon yesoensis) investigated by examination of ovarian dynamics and steroid hormone concentrations
| Title: | Accessory corpora lutea formation in pregnant Hokkaido sika deer (Cervus nippon yesoensis) investigated by examination of ovarian dynamics and steroid hormone concentrations |
| Authors: | Yanagawa, Yojiro Browse this author | | Matsuura, Yukiko Browse this author →KAKEN DB | | Suzuki, Masatsugu Browse this author →KAKEN DB | | Saga, Shin-ichi Browse this author | | Okuyama, Hideto Browse this author | | Fukui, Daisuke Browse this author | | Bando, Gen Browse this author | | Nagano, Masashi Browse this author →KAKEN DB | | Katagiri, Seiji Browse this author →KAKEN DB | | Takahashi, Yoshiyuki Browse this author →KAKEN DB | | Tsubota, Toshio Browse this author →KAKEN DB |
| Keywords: | Accessory corpus luteum | | Estradiol | | Follicular wave | | Progesterone | | Sika deer |
| Issue Date: | Feb-2015 |
| Publisher: | 日本繁殖生物学会 |
| Journal Title: | Journal of Reproduction and Development |
| Volume: | 61 |
| Issue: | 1 |
| Start Page: | 61 |
| End Page: | 66 |
| Publisher DOI: | 10.1262/jrd.2014-076 |
| Abstract: | Generally, sika deer conceive a single fetus, but approximately 80% of pregnant females have two corpora lutea (CLs). The function of the accessory CL (ACL) is unknown; moreover, the process of ACL formation is unclear, and understanding this is necessary to know its role. To elucidate the process of ACL formation, the ovarian dynamics of six adult Hokkaido sika deer females were examined ultrasonographically together with peripheral estradiol-17 beta and progesterone concentrations. ACLs formed in three females that conceived at the first estrus of the breeding season, but not in those females that conceived at the second estrus. After copulation, postconception ovulation of the dominant follicle of the first wave is induced by an increase in estradiol-17 beta, which leads to formation of an ACL. A relatively low concentration of progesterone after the first estrus of the breeding season is considered to be responsible for the increase in estradiol-17 beta after copulation. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/59488 |
| Appears in Collections: | 獣医学院・獣医学研究院 (Graduate School of Veterinary Medicine / Faculty of Veterinary Medicine) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 栁川 洋二郎
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