Hatching pattern of embryos exposed to the different treatments.

<p>Hatching patterns of the control group (solid line and diamonds, <i>N</i> = 8), mother-removed group (dotted line and squares, <i>N</i> = 7), intermittent artificial vibration group (dashed line and triangles, <i>N</i> = 7), and continuous artificial vibration group (dotted-dashed line and circles, <i>N</i> = 5). Means + SD are shown for the percentage of hatched eggs at 5 min intervals for the first 90 min, and for 24 h from the start of hatching.