Table 1 Morphometric and meristic characteristics of two specimens of Leucoraja circularis (female and male) from the coast of Syria, and compared with similar data previously recorded in specimen caught off the central Tyrrhenian Sea. Measurements are given as (mm) and as percentage value of TL (%)
Authors | This study | Consalvo et al. (2009) | ||||
|---|---|---|---|---|---|---|
Specimens | Female | Male | Male | |||
Year of capture | 2017 | 2017 | 2005 | |||
Total mass in gram | 880 | 1240 | 1329 | |||
Morphometric measurements | mm | %TL | mm | %TL | mm | %TL |
Total length | 580 | 100.0 | 628 | 100.0 | 663 | 100.0 |
Disc length | 288 | 49.7 | 332 | 52.9 | 325 | 49.0 |
Disc width | 364 | 62.8 | 403 | 64.2 | 400 | 60.0 |
Disc depth | 24 | 4.1 | 27 | 4.3 | – | – |
Eye ball length | 15 | 2.6 | 18 | 2.9 | 20 | 3.0 |
Pre-orbital length | 61 | 10.5 | 65 | 10.4 | 70 | 10.5 |
Inter-orbital width | 23 | 4.0 | 24 | 3.8 | 25 | 3.8 |
Spiracle length | 14 | 2.4 | 16 | 2.5 | 12 | 1.8 |
Inter-nasal width | 39 | 6.7 | 42 | 6.7 | – | – |
Inter-spiracular width | 37 | 6.4 | 40 | 6.4 | 42 | 6.3 |
Pre-oral length | 67 | 11.6 | 70 | 11.1 | 75 | 11.3 |
Mouth width | 45 | 7.8 | 50 | 8.0 | 50 | 7.5 |
Width between first gill slit | 87 | 15.0 | 92 | 14.6 | – | – |
Width between fifth gill slit | 55 | 9.5 | 63 | 10.0 | – | – |
Snout tip to first gill slit | 111 | 19.1 | 120 | 19.1 | – | – |
Pectoral fin anterior margin | 235 | 40.5 | 275 | 43.8 | – | – |
Pectoral fin posterior margin | 162 | 27.9 | 170 | 27.1 | – | – |
Pectoral fin inner margin | 59 | 10.2 | 62 | 9.9 | – | – |
Pelvic fin anterior margin | 65 | 17.9 | 69 | 17.1 | – | – |
Pelvic fin posterior margin | 84 | 14.5 | 87 | 13.9 | – | – |
Pelvic fin inner margin | 47 | 8.1 | 55 | 8.8 | – | – |
Tail base fin | 40 | 6.9 | 46 | 7.3 | – | – |
Snout tip to nasal curtain | 55 | 9.7 | 57 | 9.2 | 57 | 8.6 |
Snout tip to first dorsal fin | 507 | 87.4 | 537 | 85.5 | 576 | 86.9 |
Snout tip to second dorsal fin | 546 | 94.1 | 577 | 91.9 | – | – |
Distance-snout tip to cloaca | 260 | 44.8 | 283 | 45.1 | 290 | 43.7 |
Distance-cloaca to end of tail | 320 | 55.2 | 345 | 54.9 | – | – |
Clasper length | – | – | 37 | 5.9 | 102 | 15.4 |
Teeth in rows upper jaw | 39 | 39 | 39 | |||
Teeth in rows lower jaw | 34 | 34 | 33 | |||
Nictitating lamellae | 15 | 15 | 7 | |||
Median row thorns | 26 | 28 | 26 | |||
Alar thorns | 11 | 11 | 11 | |||
Orbital ring (thorns) | 7 | 7 | 5 | |||
Truncal vertebrae | 32 | 32 | – | |||
Pectoral fin rays | 90 | 90 | – | |||
Pseudo-branchial | 16 | 16 | – | |||
Nictitating lamellae | 15 | 15 | – | |||