Table 6.
Measurements [in µm] and pt values of selected morphological structures of individuals of Paramacrobiotus fairbanksi Schill, Förster, Dandekar & Wolf 2010 Madeira population mounted in Hoyer’s medium (N—number of specimens/structures measured; RANGE refers to the smallest and the largest structure among all measured specimens; SD—standard deviation, pt—ratio of the length of a given structure to the length of the buccal tube expressed as a percentage).
| Character | N | RANGE | MEAN | SD | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| µm | pt | µm | pt | µm | pt | ||||||
| Body length | 15 | 476 | – | 1036 | – | 714 | 174 | ||||
| Buccopharyngeal tube | |||||||||||
| Buccal tube length | 15 | 49.4 | – | 69.3 | – | 59.3 | – | 7.2 | – | ||
| Stylet support insertion point | 15 | 37.9 | – | 53.8 | 76.0 | – | 81.4 | 46.4 | 78.2 | 5.6 | 1.5 |
| Buccal tube external width | 15 | 10.4 | – | 16.5 | 21.0 | – | 25.9 | 13.8 | 23.2 | 2.2 | 1.6 |
| Buccal tube internal width | 15 | 7.0 | – | 12.2 | 14.1 | – | 19.1 | 9.8 | 16.4 | 1.9 | 1.5 |
| Ventral lamina length | 13 | 29.5 | – | 39.6 | 55.4 | – | 60.8 | 34.7 | 58.7 | 3.7 | 1.6 |
| Placoid lengths | |||||||||||
| Macroplacoid 1 | 15 | 8.3 | – | 14.1 | 16.7 | – | 21.8 | 11.5 | 19.3 | 2.2 | 1.6 |
| Macroplacoid 2 | 15 | 7.6 | – | 13.2 | 14.9 | – | 19.1 | 10.1 | 16.9 | 1.8 | 1.3 |
| Macroplacoid 3 | 15 | 8.6 | – | 16.5 | 16.7 | – | 24.0 | 13.1 | 21.8 | 2.6 | 2.1 |
| Microplacoid | 15 | 3.2 | – | 5.9 | 6.0 | – | 8.6 | 4.1 | 7.0 | 0.8 | 0.8 |
| Macroplacoid row | 15 | 31.0 | – | 47.5 | 60.1 | – | 71.7 | 38.8 | 65.2 | 6.1 | 2.9 |
| Placoid row | 15 | 40.4 | – | 60.1 | 78.8 | – | 86.8 | 49.6 | 83.4 | 7.4 | 2.8 |
| Claw 1 heights | |||||||||||
| External primary branch | 15 | 13.8 | – | 21.8 | 27.9 | – | 31.9 | 17.8 | 30.0 | 2.5 | 1.5 |
| External secondary branch | 15 | 9.5 | – | 15.7 | 18.5 | – | 25.3 | 12.9 | 21.8 | 1.7 | 1.8 |
| Internal primary branch | 15 | 13.4 | – | 19.6 | 24.6 | – | 31.2 | 16.3 | 27.5 | 2.2 | 1.6 |
| Internal secondary branch | 15 | 10.0 | – | 16.0 | 18.0 | – | 24.7 | 13.1 | 22.1 | 2.1 | 1.8 |
| Claw 2 heights | |||||||||||
| External primary branch | 15 | 14.2 | – | 22.3 | 28.4 | – | 32.7 | 18.3 | 30.8 | 2.5 | 1.3 |
| External secondary branch | 15 | 11.8 | – | 17.4 | 22.4 | – | 26.9 | 14.6 | 24.6 | 1.9 | 1.5 |
| Internal primary branch | 15 | 13.9 | – | 20.4 | 26.5 | – | 31.8 | 16.9 | 28.5 | 2.3 | 1.5 |
| Internal secondary branch | 15 | 10.2 | – | 17.6 | 20.6 | – | 25.8 | 13.6 | 22.9 | 2.2 | 1.7 |
| Claw 3 heights | |||||||||||
| External primary branch | 15 | 14.9 | – | 21.4 | 24.4 | – | 32.9 | 17.8 | 30.1 | 2.1 | 2.2 |
| External secondary branch | 15 | 11.6 | – | 16.5 | 20.1 | – | 27.7 | 14.3 | 24.3 | 1.7 | 2.0 |
| Internal primary branch | 15 | 14.0 | – | 21.2 | 25.5 | – | 33.1 | 17.3 | 29.2 | 2.5 | 1.9 |
| Internal secondary branch | 15 | 11.0 | – | 21.0 | 21.0 | – | 30.7 | 14.2 | 23.8 | 2.7 | 2.3 |
| Claw 4 heights | |||||||||||
| Anterior primary branch | 15 | 16.7 | – | 23.2 | 31.7 | – | 37.6 | 20.1 | 34.0 | 2.4 | 1.7 |
| Anterior secondary branch | 15 | 12.2 | – | 18.6 | 22.9 | – | 29.5 | 15.5 | 26.2 | 1.8 | 1.9 |
| Posterior primary branch | 15 | 14.6 | – | 22.2 | 28.8 | – | 35.5 | 19.0 | 32.1 | 2.7 | 1.6 |
| Posterior secondary branch | 15 | 10.3 | – | 18.1 | 20.4 | – | 26.2 | 14.6 | 24.5 | 2.4 | 1.5 |
pt values are in italics.