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首页> 外文期刊>Reproduction, fertility, and development >Seasonal patterns of luteal cyclicity in young red deer (Cervus elaphus) and sambar deer (Cervus unicolor).
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Seasonal patterns of luteal cyclicity in young red deer (Cervus elaphus) and sambar deer (Cervus unicolor).

机译：幼马鹿（黄鹿）和水鹿（单色鹿）的黄体循环的季节性模式。

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摘要

Plasma progesterone profiles were studied over a 15 month period in 7 red deer and 7 sambar deer hinds. Seasonal response to photoperiod was determined from plasma prolactin profiles. All red deer attained puberty at 17-18 months of age in May-Juneand expressed 3-6 luteal cycles of length 20.0?0.4 days over 52-102 days. Six sambar deer attained puberty at 7-19 months of age, between August and December. Duration of luteal cyclicity was variable. With the exception of 1 sambar hind that remained continuously cyclic for 13 months, most of the remaining hinds were anoestrous between November and February. The mean length of the luteal cycle was 17.2?.3 days. While red deer exhibited a strongly seasonal pattern of prolactin secretion, sambar deer showed no such seasonal trend. The data collectively indicate that young sambar hinds at temperate latitudes exhibit loosely defined patterns of reproductive seasonality that are 4-6 months out of phase compared with red deer, although some individuals may be non-seasonal. The failure to express seasonal patterns of prolactin secretion indicates that sambar deer may not perceive photoperiodic cues to the same extent as red deer.
机译：在15个月的时间内对7头马鹿和7头水鹿鹿进行了血浆孕酮分析。从血浆催乳素谱确定对光周期的季节性响应。所有马鹿在​​5月至6月的17-18个月大时达到青春期，并在52-102天内表现出3-6个黄体周期，长度为20.0-0.4天。在八月到十二月之间，六头水鹿在7-19个月大时进入青春期。黄体循环的持续时间是可变的。除了1个后肢的后牙保持连续循环13个月外，其余大部分后牙在11月至2月之间是食道的。黄体周期的平均长度为17.2±0.3天。马鹿的催乳素分泌表现出强烈的季节性模式，而水鹿则没有这种季节性趋势。这些数据共同表明，温带纬度地区的年轻水鹿后代表现出的繁殖季节定义较松散，与马鹿相比，相差4-6个月，尽管有些人可能是非季节性的。无法表达催乳素分泌的季节性模式表明，水鹿的感觉不到与马鹿相同的光周期信号。

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