Knauf Sascha, Exner Cornelia, Hospes Rainer, Heldmaier Gerhard, Wehrend Axel
Clinic for Obstetrics, Gynecology and Andrology of Small and Large Animals, Justus-Liebig-University Giessen, Giessen, Germany.
J Zoo Wildl Med. 2009 Dec;40(4):796-8. doi: 10.1638/2009-0013.1.
In the wild, Alpine marmots (Marmota marmota) spend most of their time in underground burrows. Thus the observation of reproduction biology during mating season, gestation, and the early juvenile development is extremely challenging. An ultrasonographic follow-up of pregnancies in captive alpine marmots illustrates the characteristic findings of different gestational phases. The first ultrasonographic proof for a pregnancy was detected on day -25 (day 0 defined as partus). At day -18, first heartbeats were visualized, followed by spontaneous fetal movements on day -14. At day -7, the mineralization of the skeletal system was demonstrated. It was possible to evaluate and monitor the integrity of pregnancy. Ultrasonography is a noninvasive, alternative tool to the classical verification of pregnancy in marmots by progesterone measurement from serum samples.
在野外，阿尔卑斯旱獭（Marmota marmota）大部分时间都待在地下洞穴中。因此，在交配季节、妊娠期以及幼崽早期发育阶段观察其生殖生物学极具挑战性。对圈养阿尔卑斯旱獭妊娠情况进行超声跟踪检查，可呈现不同妊娠阶段的特征性表现。首次超声检查证实怀孕是在第 -25 天（将分娩日定义为第 0 天）。在第 -18 天，首次观察到心跳，随后在第 -14 天出现自发胎动。在第 -7 天，显示出骨骼系统的矿化情况。通过超声检查能够评估和监测妊娠的完整性。超声检查是一种非侵入性的替代工具，可替代通过检测血清样本中孕酮来进行旱獭妊娠经典验证的方法。
