Table 1 Morphometric measurements (mm) of individuals of five male specimens of Scyliorhinus hesperius
Measurements | Rf. 252 | Rf. 253 | Rf. 254 | Rf. 255 | Rf. 256 |
|---|---|---|---|---|---|
Total length (mm) | 510.0 | 455.0 | 429.0 | 435.0 | 420.0 |
Fork length | 440.0 | 401.0 | 381.0 | 390.4 | 370.0 |
Precaudal fin length | 400.0 | 358.0 | 335.0 | 345.5 | 330.0 |
Pre-second dorsal-fin length | 350.0 | 315.0 | 293.3 | 303.1 | 272.2 |
Pre-first dorsal-fin length | 247.6 | 235.2 | 220.3 | 234.9 | 204.7 |
Head length | 98.1 | 93.8 | 91.8 | 97.2 | 90.0 |
Prebranchial length | 69.4 | 67.2 | 66.3 | 68.8 | 58.2 |
Prespiracular length | 52.1 | 50.4 | 52.2 | 53.5 | 49.4 |
Preorbital length | 28.8 | 26.9 | 26.4 | 27.3 | 26.4 |
Prepectoral-fin length | 91.3 | 86.8 | 83.8 | 82.1 | 75.3 |
Prepelvic-fin length | 205.2 | 186.1 | 178.8 | 189.7 | 175.2 |
Snout-vent length | 221.2 | 200.3 | 190.9 | 204.8 | 197.9 |
Preanal-fin length | 304.3 | 277.9 | 268.2 | 278.2 | 253.2 |
Interdorsal space | 55.1 | 53.8 | 45.0 | 47.9 | 40.1 |
Dorsal caudal-fin space | 30.4 | 23.6 | 23.0 | 22.0 | 20.0 |
Pectoral-fin pelvic-fin space | 96.4 | 86.2 | 79.4 | 82.0 | 76.6 |
Pelvic-fin anal-fin space | 70.6 | 64.2 | 58.0 | 62.1 | 52.7 |
Anal-fin caudal-fin space | 48.3 | 39.5 | 45.5 | 39.3 | 43.0 |
Pelvic-fin caudal-fin space | 155.5 | 139.1 | 130.4 | 132.0 | 127.0 |
Vent caudal-fin length | 184.9 | 167.8 | 168.6 | 159.8 | 164.0 |
Prenarial length | 14.5 | 12.4 | 13.4 | 12.5 | 12.3 |
Preoral length | 22.2 | 20.9 | 18.9 | 20.7 | 18.2 |
Eye length | 20.3 | 18.2 | 18.4 | 20.0 | 19.9 |
Eye height | 6.7 | 5.1 | 5.1 | 5.2 | 4.2 |
Intergill length | 30.3 | 27.7 | 23.4 | 28.4 | 23.8 |
First gill slit height | 7.5 | 6.5 | 5.2 | 5.8 | 4.6 |
Second gill slit height | 6.5 | 5.3 | 4.5 | 4.8 | 3.8 |
Third gill slit height | 8.7 | 7.9 | 5.1 | 5.9 | 5.2 |
Fourth gill slit height | 6.3 | 5.7 | 3.8 | 5.3 | 4.5 |
Fifth gill slit height | 4.9 | 4.5 | 3.7 | 5.1 | 4.5 |
First dorsal-fin length | 45.7 | 39.8 | 39.9 | 38.4 | 34.3 |
First dorsal-fin anterior margin | 46.8 | 42.5 | 44.1 | 41.8 | 36.4 |
First dorsal-fin base | 31.3 | 27.4 | 29.2 | 28.2 | 25.4 |
First dorsal-fin height | 34.4 | 24.2 | 21.2 | 23.7 | 23.5 |
First dorsal-fin inner margin | 14.7 | 14.2 | 14.2 | 12.3 | 9.8 |
First dorsal-fin posterior margin | 29.2 | 22.7 | 22.1 | 22.2 | 19.8 |
Second dorsal-fin length | 41.2 | 31.8 | 35.4 | 32.2 | 30.6 |
Second dorsal-fin anterior margin | 31.5 | 29.6 | 32.3 | 31.2 | 28.4 |
Second dorsal-fin base | 25.5 | 20.7 | 23.1 | 21.0 | 21.3 |
Second dorsal-fin height | 21.6 | 15.5 | 13.0 | 14.9 | 14.8 |
Second dorsal-fin inner margin | 14.1 | 12.2 | 10.6 | 10.6 | 10.1 |
Second dorsal-fin posterior margin | 16.3 | 16.0 | 14.5 | 14.3 | 11.0 |
Pectoral-fin anterior margin | 67.3 | 61.2 | 60.1 | 59.1 | 54.0 |
Pectoral-fin base | 57.0 | 52.0 | 51.3 | 49.7 | 46.7 |
Pectoral-fin inner margin | 29.0 | 26.6 | 24.8 | 26.1 | 23.5 |
Pectoral-fin posterior margin | 48.2 | 45.7 | 41.5 | 42.9 | 38.5 |
Pectoral-fin height | 50.9 | 50.8 | 47.7 | 51.0 | 40.3 |
Dorsal caudal-fin margin | 107.5 | 97.4 | 96.9 | 93.7 | 89.0 |
Preventral caudal-fin margin | 14.8 | 11.5 | 13.8 | 11.4 | 8.3 |
Upper postventral caudal-fin | |||||
margin | 24.2 | 28.1 | 25.6 | 22.4 | 27.9 |
Lower postventral caudal-fin | |||||
margin | 46.9 | 44.5 | 45.3 | 40.0 | 36.4 |
Caudal-fin fork width | 26.5 | 26.2 | 26.1 | 25.6 | 20.5 |
Caudal-fin fork length | 49.6 | 46.7 | 45.1 | 45.5 | 42.3 |
Subterminal caudal-fin margin | 22.9 | 18.9 | 19.0 | 20.2 | 18.8 |
Subterminal caudal-fin width | 11.4 | 9.2 | 10.3 | 9.2 | 8.2 |
Terminal caudal-fin margin | 29.0 | 26.4 | 23.2 | 24.2 | 20.4 |
Terminal caudal-fin lobe | 36.7 | 30.0 | 28.9 | 30.8 | 27.3 |
Pelvic-fin length | 58.8 | 55.7 | 48.4 | 51.4 | 49.0 |
Pelvic-fin anterior margin | 36.9 | 35.8 | 32.2 | 33.7 | 31.1 |
Pelvic-fin base | 31.1 | 30.7 | 28.8 | 26.8 | 25.8 |
Pelvic-fin height | 29.0 | 19.8 | 28.2 | 18.7 | 18.1 |
Pelvic-fin inner margin (length) | 27.9 | 23.4 | 22.7 | 20.8 | 20.8 |
Pelvic-fin posterior margin (length) | 39.4 | 35.9 | 34.5 | 35.2 | 35.5 |
Anal-fin length | 53.5 | 49.9 | 45.8 | 47.5 | 42.0 |
Anal-fin anterior margin | 34.4 | 34.7 | 36.0 | 36.0 | 28.8 |
Anal-fin base | 41.7 | 37.5 | 35.6 | 34.9 | 32.9 |
Anal-fin height | 19.6 | 16.4 | 16.8 | 14.5 | 15.3 |
Anal-fin inner margin | 12.5 | 14.3 | 12.5 | 12.0 | 11.2 |
Anal-fin posterior margin | 28.0 | 25.7 | 23.1 | 24.5 | 17.4 |
Head height | 33.5 | 33.7 | 34.0 | 29.8 | 30.3 |
Trunk height | 47.1 | 39.0 | 41.3 | 43.0 | 27.3 |
Abdomen height | 31.4 | 25.8 | 28.9 | 26.4 | 26.2 |
Tail height | 35.7 | 30.0 | 31.5 | 27.3 | 26.8 |
Caudal-fin peduncle height | 15.5 | 16.8 | 14.3 | 13.4 | 12.8 |
Mouth length | 16.9 | 15.6 | 15.2 | 14.7 | 18.4 |
Mouth width | 32.0 | 25.4 | 28.2 | 26.8 | 23.3 |
Upper labial-furrow length | 2.2 | 3.0 | 3.0 | 2.3 | 1.5 |
Lower labial-furrow length | 6.0 | 5.0 | 5.1 | 6.1 | 5.2 |
Nostril width | 9.9 | 9.8 | 9.0 | 10.3 | 10.3 |
Internarial space | 8.0 | 7.9 | 7.8 | 7.9 | 5.7 |
Interorbital space | 29.9 | 26.6 | 28.8 | 23.9 | 26.6 |
Spiracle length | 3.5 | 2.8 | 2.9 | 2.2 | 1.9 |
Eye spiracle space | 4.0 | 4.1 | 4.2 | 4.1 | 3.5 |
Head width | 49.6 | 44.0 | 40.3 | 44.4 | 39.9 |
Trunk width | 40.5 | 43.4 | 41.4 | 40.9 | 35.9 |
Abdomen width | 19.6 | 15.2 | 14.4 | 13.8 | 12.9 |
Tail width | 26.5 | 21.0 | 22.6 | 21.9 | 21.4 |
Caudal-fin peduncle width | 8.0 | 7.7 | 9.0 | 6.1 | 6.8 |
Clasper outer length | 22.7 | 20.4 | 19.4 | 20.3 | 20.1 |
Clasper inner length | 37.5 | 33.7 | 35.0 | 31.4 | 34.1 |
Clasper base width | 4.9 | 4.8 | 4.0 | 4.3 | 3.7 |