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광주기에 따 른 비단털쥐 (Mammalia: Rodentia: Cricetidae) 암컷의 발정주기 변화 KCI 등재

Estrus Cycles of the Female Tscherskia triton (Mammalia: Rodentia: Cricetidae) according to the Photoperiod

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  • URLhttps://db.koreascholar.com/Article/Detail/328481
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한국환경생물학회 (Korean Society Of Environmental Biology)
초록

Tscherskia triton is widely distributed in Northern China, Korea, and the adjacent areas of Russia. Except its distribution, reproduction, and growth development related to life history, reproductive cycle and reproductive organs of T. triton are rarely studied in Korea. The purpose of this study was characterized the estrous cycle of T. triton captured in Jeju Island in order to provide information to a better information of captive breeding of the species when longday (16L : 8D) and short-day (8L : 16D) photoperiod. Then, histological study of the ovaries and uterus with five females in each photoperiod was performed. The duration of the estrus cycle was 4~5 days and it showed regular cycle pattern. Results of the vaginal cytology examination showed four characteristic phase of the estrous cycle in long-day photoperiod (16L : 8D): proestrus, estrus, metestrus and diestrus. However, in short-day photoperiod, the diestrus phage of the estrus cycle was maintained from the 6th to 12th day. In the long-day photoperiod, females had many Graafian follicles and corpus luteums in large ovaries, and developed uterine glands in the thick endometrium. But they had some primary, secondary and tertiary follicles, and undeveloped uterine glands in the thin endometrium during short-day photoperiod. These results were identified difference of the estrus cycle and histological characteristics of reproductive tracts according to the photoperiod. These results are very important clues to the reproductive biology of T. triton, and it will be widely used as date for maintaining biodiversity.

저자
  • 박준호(제주대학교 과학교육학부) | Jun-Ho Park (Faculty of Science Education, Jeju National University, Jeju 63243, Republic of Korea)
  • 안근재(제주대학교 과학교육학부) | Keun Jae Ahn (Faculty of Science Education, Jeju National University, Jeju 63243, Republic of Korea)
  • 오홍식(제주대학교 과학교육학부) | Hong-Shik Oh (Faculty of Science Education, Jeju National University, Jeju 63243, Republic of Korea) Corresponding author