Williamson P, Gales N J, Lister S
School of Veterinary Studies, Murdoch University, Perth, Western Australia.
J Reprod Fertil. 1990 Mar;88(2):543-8. doi: 10.1530/jrf.0.0880543.
Real-time ultrasonography was used to detect pregnancy in 4 captive bottle-nose dolphins. Pregnancy was readily confirmed from around the 4th month of gestation by imaging fetal fluids and fetal movement. Periodic examination permitted monitoring of the viability of the fetuses by observation of their heart beat and movement, and serial measurements of skull diameter (occipito-frontal axis) and thoracic diameter was possible. A growth curve for these measurements was plotted.
使用实时超声对4只圈养宽吻海豚进行妊娠检测。在妊娠约第4个月左右,通过对羊水和胎儿活动成像,很容易确认妊娠情况。定期检查可通过观察胎儿心跳和活动来监测胎儿的活力,还可以对胎儿颅骨直径(枕额径)和胸径进行连续测量。绘制了这些测量数据的生长曲线。