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生态学杂志 ›› 1998, Vol. ›› Issue (4): 59-62,44.

• 研究报告 • 上一篇    下一篇

黑线毛足鼠妊娠期光照对仔鼠睾丸发育的影响

夏银1, 程瑞禾2   

  1. 1. 南京师范大学生物系, 210097;
    2. 南京农业大学动物科技学院, 210095
  • 收稿日期:1997-06-02 出版日期:1998-08-10

Influence of Prenatal Photoperiods on Development of Postnatal Testis in Striped Hairy-Footed Hamster (Review)

Xia Yin1, Cheng Ruihe2   

  1. 1. Department of Biology, Nanjing Normal University, 210097;
    2. Nangjing Agricultural University, 210095
  • Received:1997-06-02 Online:1998-08-10

关键词: 晋南旱地, 夏闲期, 土壤水分, 土壤养分

Abstract: The testis development of striped hairy-footed hamsters in a photoperiod of intermediate duration (14L:10D) is influenced by the photoperiod to which the mothers are subjected during gestation.12L:12D promotes rapid gonadal development in young,while 16L:8D supresses gonadal development in young.Prenatal exposure to short photoperiod delays the start of spermatogenesis and reduces the numbers of gonocytes. The maternal pineal gland and melatonin mediate the effects of daylength during the prenatal period on the testis development in young. There is a restricted period for reception of the prenatal signal, with maximum sensitivity to maternal melatonin occuring 3-5 day before parturition.The response to postnatal melatonin signals dose not depend on the photoperiod in effect before brith. However, the prenatal photoperiod can influence the postnatal melatonin secretion pattern in males.

Key words: dryland in Southern Shanxi, summer fallow period, soil moisture, soil nutrient.