Comparison of shear stress and adhesive stress between the hairy and smooth systems, for the little and accumulated regimes and taking both real and projected contact areas into account for the hairy system of G. viridula
| . | Contact area . | Hairy system Gastrophysa viridula . | Smooth system Carausius morosus . | Paired t-test . |
|---|---|---|---|---|
| Shear stress (kPa) | ||||
| Little secretion | Real | 518.5±48.9 | 298.9±60.2 | t11,5=2.83, P=0.016 |
| Projected | 196.2±14.5 | t6,7=1.66, P=0.143 | ||
| Accumulated secretion | Real | 293.8±63.9 | 205.8±31.0 | t8,7=1.24, P=0.248 |
| Projected | 95.21±20.41 | t10,4=2.98, P=0.013 | ||
| Adhesion stress (kPa) | ||||
| Little secretion | Real | 86.93±11.34 | 44.59±9.07 | t11,5=–2.92, P=0.014 |
| Projected | 35.49±5.18 | t9,5=0.87, P=0.405 | ||
| Accumulated secretion | Real | 62.90±14.06 | 24.88±2.25 | t6,3=–2.67, P=0.035 |
| Projected | 20.32±3.33 | t10,5=1.14, P=0.281 |
| . | Contact area . | Hairy system Gastrophysa viridula . | Smooth system Carausius morosus . | Paired t-test . |
|---|---|---|---|---|
| Shear stress (kPa) | ||||
| Little secretion | Real | 518.5±48.9 | 298.9±60.2 | t11,5=2.83, P=0.016 |
| Projected | 196.2±14.5 | t6,7=1.66, P=0.143 | ||
| Accumulated secretion | Real | 293.8±63.9 | 205.8±31.0 | t8,7=1.24, P=0.248 |
| Projected | 95.21±20.41 | t10,4=2.98, P=0.013 | ||
| Adhesion stress (kPa) | ||||
| Little secretion | Real | 86.93±11.34 | 44.59±9.07 | t11,5=–2.92, P=0.014 |
| Projected | 35.49±5.18 | t9,5=0.87, P=0.405 | ||
| Accumulated secretion | Real | 62.90±14.06 | 24.88±2.25 | t6,3=–2.67, P=0.035 |
| Projected | 20.32±3.33 | t10,5=1.14, P=0.281 |
Values are means ± s.e.m.