In uniparental Phodopus sungorus, new mothers, and fathers present during the birth of their offspring, are the only hamsters that readily consume fresh placenta
In uniparental Phodopus sungorus, new mothers, and fathers present during the birth of their offspring, are the only hamsters that readily consume fresh placenta
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DOI：
10.1002/dev.20174
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发表时间：
2006-11-01
影响因子：
2.2
通讯作者：
Wynne-Edwards, Katherine E.
中科院分区：
文献类型：
--
作者：
Gregg, Jennifer K.;Wynne-Edwards, Katherine E.
食胎盘在临产的雌性哺乳动物中很常见，但非临产的雌性通常拒绝胎盘。双亲雄性侏儒仓鼠（Phodopus campbelli）容易消耗胎盘。本研究量化了密切相关的西伯利亚仓鼠P. sungorus的胎盘吞噬和肝脏接受，其中雄性不参与分娩，对流离失所的幼崽没有反应。未有性经验的雄性和雌性桑戈尔对虾拒绝胎盘和肝脏（所有组< 10%）。生殖雌性专门在前一天（G17）和分娩当天（G18）食用胎盘（> 80%）。在G17时，配偶排斥这两种组织，并在出生后不久接受胎盘（G18）（80%），前提是它们在出生时存在。胎盘的适口性不是造成种间差异的原因，因为坎贝氏蛙接受了太阳对虾的胎盘。结果与对胎盘（同种或异种）和肝脏的新恐惧反应一致，因为P. sungorus也排斥P. campbelli胎盘。(c)2006 Wiley Periodicals，Inc.
Placentophagia is common among parturient female mammals but non-parturient females generally refuse placenta. Biparental male dwarf hamsters (Phodopus campbelli) readily consume placenta. The present study quantified placentophagia and liver acceptance in the closely related Siberian hamster P. sungorus in which males do not participate in the birth and are not responsive to a displaced pup. Sexually naive P. sungorus males and females refused both placenta and liver (all groups < 10%). Reproductive females specifically consumed placenta on the day before (G17), and the day of parturition (G18) (> 80%). Mates rejected both tissues on G17 and accepted placenta soon after the birth (G18) (80%) only if they were present during the birth. Palatability of the placenta was not responsible for the species difference as R campbelli accepted P. sungorus placenta. Results are consistent with a neophobic reaction to both placenta (conspecific or heterospecific) and liver as P. sungorus also rejected P. campbelli placenta. (c) 2006 Wiley Periodicals, Inc.