Physiologically persistent Corpora lutea in Eurasian lynx (Lynx lynx) - longitudinal ultrasound and endocrine examinations intra-vitam.
Physiologically persistent Corpora lutea in Eurasian lynx (Lynx lynx) - longitudinal ultrasound and endocrine examinations intra-vitam.
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DOI：
10.1371/journal.pone.0090469
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发表时间：
2014
期刊：
影响因子：
3.7
通讯作者：
Goeritz F
中科院分区：
文献类型：
--
作者：
Painer J;Jewgenow K;Dehnhard M;Arnemo JM;Linnell JD;Odden J;Hildebrandt TB;Goeritz F
猫科动物通常遵循多发情的生殖策略。欧亚山猫(Lynx Lynx)表现出不同的生殖周期模式，生理上持久的黄体(CLS)诱导单情期，从而导致高度季节性的繁殖。本研究基于圈养欧亚山猫的声学和内分泌研究，以及自由放养山猫的对照研究。我们证实，CLS在怀孕和假孕后持续至少两年。我们可以看出，山猫能够在第二年进入发情期，而前些年的CLS在结构上保持不变，只是在发情开始或出生时暂时降低了功能，这在猫科动物中是独一无二的。几乎恒定的黄体孕酮分泌(平均5 ng/ml血清)似乎阻止了繁殖季节以外的卵泡发生，并将多发情的一般猫科动物周期转变为山猫特有的单发情周期。导致山猫在哺乳动物中拥有最长CL寿命的激素调节机制尚不清楚。所描述的非猫科动物样的卵巢生理学似乎是一个显著的非塑料系统。山猫适应环境和人为变化的繁殖能力需要进一步研究。
Felids generally follow a poly-estrous reproductive strategy. Eurasian lynx (Lynx lynx) display a different pattern of reproductive cyclicity where physiologically persistent corpora lutea (CLs) induce a mono-estrous condition which results in highly seasonal reproduction. The present study was based around a sono-morphological and endocrine study of captive Eurasian lynx, and a control-study on free-ranging lynx. We verified that CLs persist after pregnancy and pseudo-pregnancy for at least a two-year period. We could show that lynx are able to enter estrus in the following year, while CLs from the previous years persisted in structure and only temporarily reduced their function for the period of estrus onset or birth, which is unique among felids. The almost constant luteal progesterone secretion (average of 5 ng/ml serum) seems to prevent folliculogenesis outside the breeding season and has converted a poly-estrous general felid cycle into a mono-estrous cycle specific for lynx. The hormonal regulation mechanism which causes lynx to have the longest CL lifespan amongst mammals remains unclear. The described non-felid like ovarian physiology appears to be a remarkably non-plastic system. The lynx's reproductive ability to adapt to environmental and anthropogenic changes needs further investigation.
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影响因子：
1.7
作者：
Jewgenow, K.;Amelkina, O.;Dehnhard, M.
通讯作者：
Dehnhard, M.
影响因子：
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作者：
Andren, Henrik;Linnell, John D. C.;Segerstrom, Peter
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Segerstrom, Peter
影响因子：
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作者：
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Hildebrandt, T. B.
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Dehnhard, M.
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