Prediction of fertility by mating latency and photoperiod in nulliparous and primiparous meadow voles (Microtus pennsylvanicus).
Prediction of fertility by mating latency and photoperiod in nulliparous and primiparous meadow voles (Microtus pennsylvanicus).
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DOI：
10.1530/jrf.0.0970353
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发表时间：
1993-03
期刊：
影响因子：
--
通讯作者：
L. R. Meek;T. M. Lee
中科院分区：
文献类型：
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作者：
L. R. Meek;T. M. Lee
交配行为和窝生产的雌性草甸田鼠（Microtus pennaculicus）长期（14小时光：10小时黑暗;长日; LD）或短（10小时光：14小时黑暗;短日; SD）光周期进行了监测，以确定是否减少SD女性的出生率由于缺乏交配。所有雌性交配，但较少SD雌性分娩。LD和SD雌性根据交配潜伏期分为三个不同的组。快速发病组（RO）在配对后7 min至9 h交配，中间发病组（IO）在16-44 h交配，迟发组（LO）在雄性接触后58-262 h交配。67%的LD女性被分配到RO组，27%到IO组，6%到LO组。相反，30%的SD雌性动物被分配到RO组，35%分配到IO组，35%分配到LO组。通过交配潜伏期预测生育力。69%的RO、93%的IO和33%的LO动物分娩。在进一步的实验中，一个小口杯被添加到环境中，作为希望避免交配的雌性的逃避。虽然女性没有使用的杯子，以逃避男性的做法，交配发生在只有66%的SD女性，但观察到所有LD女性。在最后一项实验中，记录了第一项实验中最初观察到的LD和SD产羔雌性的交配潜伏期和产仔数。在经产雌性中消除LO组;所有经产LD和SD雌性在48 h内交配。（250字处删节）
Mating behavior and litter production of female meadow voles (Microtus pennsylvanicus) housed in long (14 h light: 10 h dark; long day; LD) or short (10 h light: 14 h dark; short day; SD) photoperiods were monitored to determine whether the reduced birthrate of SD females resulted from a lack of copulation. All females mated, but fewer SD females gave birth. LD and SD females fell into three distinct groups based on mating latency. The rapid onset group (RO) mated between 7 min and 9 h after pairing, the intermediate onset group (IO) mated between 16-44 h and the late onset group (LO) mated after 58-262 h of male contact. Sixty-seven per cent of LD females were assigned to group RO, 27% to IO, and 6% to LO. In contrast, 30% of SD females were assigned to group RO, 35% to IO and 35% to LO. Fertility was predicted by mating latency. Sixty-nine per cent of RO, 93% of IO and 33% of LO animals gave birth. In a further experiment, a small-mouthed cup was added to the environment to serve as an escape for females wishing to avoid mating. Although females did not use the cup to escape male approaches, mating occurred in only 66% of SD females, but was observed in all LD females. In a final experiment, mating latency and litter production were recorded in primiparous LD and SD females initially observed in the first experiment. Group LO was eliminated in parous females; all primiparous LD and SD females mated within 48 h.(ABSTRACT TRUNCATED AT 250 WORDS)