Female meadow voles have a preferred mating pattern predicted by photoperiod, which influences fertility.
Female meadow voles have a preferred mating pattern predicted by photoperiod, which influences fertility.
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雌性草甸田鼠具有由光周期预测的首选交配模式，这会影响生育能力。
DOI：
10.1016/0031-9384(93)90349-k
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发表时间：
1993
影响因子：
2.9
通讯作者：
Lee,TM
中科院分区：
文献类型：
--
作者：
Meek,LR;Lee,TM
在之前的一项研究中，Meek和Lee（26）发现雌性草地田鼠在与雄性交配后的三个不同时间段内交配，并且生育能力受到交配时间和光周期的影响。在目前的研究中，我们测试了不同的交配模式与高生育力和低生育力相关的假设。我们发现两种截然不同的交配模式与高生育率相关。女性居住在长日照（长日，14小时光/天）和交配48小时内与男性配对，收到几个坐骑，intrumisations，和intrumisations每射精系列，非常短的intrumisation间隔。所有长日雌性利用这种交配模式排卵，86-100%产生窝。我们认为这种交配模式与自发发情有关。在48小时内交配的长日女性相比，女性居住在短日照（短日; 10小时光/天）和交配后14-48小时与男性配对，收到显着更短的坐骑和introdmissions，更长的introdmissions间隔。这些短日照雌性全部排卵，86%产窝。我们认为这种交配模式与诱导发情有关。短日女性没有表现出这种模式的交配（66%）产生的窝少得多。我们讨论了两种机制，生育能力可能会受到抑制，在大多数短日女性。
In a previous study, Meek and Lee (26) found that female meadow voles mated within three distinct time periods after pairing with a male, and fertility was influenced by the time of mating and photoperiod. In the present studies, we tested the hypothesis that different patterns of mating would correlate with high and low fertility. We found two very different patterns of mating were correlated with high fertility. Females housed in long daylengths (long day; 14 h light/day) and mating within 48 h of pairing with a male, received few mounts, intromissions, and intromissions per ejaculatory series, with very short interintromission intervals. All long-day females utilizing this mating pattern ovulated, and 86–100% produced litters. We suggest this pattern of mating is associated with spontaneous estrus. In contrast to long-day females mating within 48 h, females housed in short daylengths (short day; 10 h light/day) and mating between 14–48 h after pairing with a male, received significantly more short mounts and intromissions, with longer interintromission intervals. These short day females all ovulated and 86% produced litters. We suggest that this pattern of mating is associated with an induced estrus. Short-day females that did not exhibit this pattern of mating (66%) produced far fewer litters. We discuss two mechanisms by which fertility may be inhibited in most short-day females.