Lacave G, Eggermont M, Verslycke T, Brook F, Salbany A, Roque L, Kinoshita R
Marine Mammal Veterinary Services, Betferkerklaan 158, B-8200 Brugge, Belgium.
Vet Rec. 2004 Feb 21;154(8):228-33. doi: 10.1136/vr.154.8.228.
Ultrasonographic measurements were made at least once a month during 14 gestations in seven Tursiops truncatus and 12 gestations in five Tursiops aduncus (bottlenosed dolphins). The 121 measurements of the fetal biparietal diameter and 139 measurements of the fetal thoracic diameter in T truncatus and the 97 measurements of the biparietal diameter and 97 measurements of the thoracic diameter in Taduncus were used to establish regression lines for the increases in the diameter of the head and thorax of the fetus with time. From these relationships an easy-to-use computer program was developed to predict the date of birth of the two species of bottlenosed dolphin, and its predictions were compared with the actual dates of birth of other calves of both species. The births occurred within the range of predicted dates, and even when only a few measurements were available, the program provided accurate predictions.
在7只宽吻海豚（瓶鼻海豚）的14次妊娠期间，每月至少进行一次超声测量；在5只糙齿海豚的12次妊娠期间也进行了同样的操作。利用宽吻海豚的121次胎儿双顶径测量值和139次胎儿胸径测量值，以及糙齿海豚的97次双顶径测量值和97次胸径测量值，建立了胎儿头部和胸部直径随时间增加的回归线。根据这些关系开发了一个易于使用的计算机程序，用于预测这两种瓶鼻海豚的出生日期，并将其预测结果与这两个物种其他幼崽的实际出生日期进行比较。出生时间均在预测日期范围内，即使只有少数测量数据，该程序也能提供准确的预测。
