Table 2. Top morphometric characters with the most powerful discriminant ratios in Scylla spp.
| Divisor | Number of discriminant ratios tested | Number of significant discriminant ratios (percentage of all combinations) | Number of insignificant discriminant ratios (excluded) | Excluded discriminant ratios |
Most powerful discriminant ratios (number of ratios) |
|
|---|---|---|---|---|---|---|
| Male | ||||||
| FW | 24 | 22 (OG = 100%, CVG =100%) | 2 | FW/FW, ICW/FW, AW/FW | ICS/FW, FMSH/FW, 5PW/FW, OCS/FW, 3PCL/FW (5) | |
| FMSH | 24 | 22 (OG = 100%, CVG =100%) | 2 | FMSH/FMSH, ICW/FMSH | ICS/FMSH, FW/FMSH, 5PW/FMSH, OCS/FMSH, 3PCL/FMSH (5) | |
| 5PL | 24 | 22 (OG = 100%, CVG =100%) | 2 | 5PL/5PL, AW/5PL | ICS/5PL, FMSH/5PL, 3PCL/5PL, OCS/5PL, PD/5PL (5) | |
| 5PW | 24 | 21 (OG = 100%, CVG =100%) | 3 | 5PW/5PW, ICW/5PW, AW/5PW | ICS/5PW, FMSH/5PW, 3PCL/5PW, OCS/5PW, FW/5PW (5) | |
| ML | 24 | 21 (OG = 100%, CVG =100%) | 3 | ML/ML, ICW/ML, AW/ML | ICS/ML, FMSH/ML, 3PCL/ML, 5PL/ML, OCS/ML (5) | |
| PW | 24 | 22 (OG = 100%, CVG =100%) | 2 | PW/PW, AW/PW | ICS/PW, FMSH/PW, 3PCL/PW, 5PL/PW, OCS/PW (5) | |
| Female | ||||||
| 8CW | 24 | 20 (OG = 100%, CVG =100%) | 4 | 8CW/8CW, DFLS/8CW, SW/8CW, DL/8CW | ICS/8CW, OPS/8CW, 3PCL/8CW, IPS/8CW, 5PL/8CW (5) | |
| PWC | 24 | 17 (OG = 100%, CVG =100%) | 7 | PWC/PWC, DFMS/PWC, DFLS/PWC, FW/PWC, SW/PWC, DL/PWC, PD/PWC | ICS/PWC, OPS/PWC, 5PL/PWC, FMSH/PWC (4) | |
| CL | 24 | 17 (OG = 100%, CVG =100%) | 7 | CL/CL, DFLS/CL, PD/DFLS, DL/DFLS, PL/DFLS, SW/DFLS, ML/DFLS | ICS/CL, FMSH/CL, OPS/CL, 3PCL/CL, IPS/CL (5) | |
| FMSH | 24 | 18 (OG = 100%, CVG =100%) | 6 | FMSH/FMSH, SW/FMSH, PL/FMSH, DL/FMSH, DFLS/FMSH, ML/FMSH | ICS/FMSH, 5PL/FMSH, OPS/FMSH, PWC/FMSH (4) | |
| 3PCL | 24 | 19 (OG = 100%, CVG =100%) | 5 | 3PCL/3PCL, PD/3PCL, DL/3PCL, SW/3PCL, DFLS/3PCL | ICS/3PCL, FW/3PCL, OPS/3PCL, IPS/3PCL, PW/3PCL (5) | |
| 5PL | 24 | 19 (OG = 100%, CVG =100%) | 5 | 5PL/5PL, SW/5PL, DFLS/5PL, PD/5PL, DL/5PL | ICS/5PL, FMSH/5PL, OPS/5PL, 3PCL/5PL, IPS/5PL (5) | |
| Male + Female | ||||||
| ICW | 24 | 23 (OG = 100%, CVG =100%) | 1 | ICW/ICW | ICS/ICW, AW/ICW, FMSH/ICW, DL/ICW, 5PL/ICW, OCS/ICW, PD/ICW, 3PCL/ICW, IPS/ICW, CL/ICW, PW/ICW, OPS/ICW (12) | |
| FMSH | 24 | 23 (OG = 100%, CVG =100%) | 1 | FMSH/FMSH | ICS/FMSH, AW/FMSH, PL/FMSH, 3PML/FMSH, OCS/FMSH, 5PL/FMSH, IPS/FMSH, 3PCL/FMSH, ICW/FMSH, OPS/FMSH, PD/FMSH, DL/FMSH (12) | |
| DL | 24 | 23 (OG = 100%, CVG =100%) | 1 | DL/DL | ICS/DL, AW/DL, FMSH/DL, 5PL/DL, PD/DL, CL/DL, OCS/DL, 3PCL/DL, IPS/DL, CW/DL, PW/DL, OPS/DL (12) | |
| IPS | 24 | 23 (OG = 100%, CVG =100%) | 1 | IPS/IPS | ICS/IPS, PW/IPS, AW/IPS, OCS/IPS, 3PCL/IPS, FMSH/IPS, CW/IPS, 3PML/IPS, 5PL/IPS, PD/IPS (10) | |
Notes.
- OG
- original grouped cases correctly classified
- CVG
- cross-validated grouped cases correctly classified
- CW
- carapace width
- ICW
- internal carapace width
- 8CW
- CW at spine 8
- PWC
- posterior width of carapace
- CL
- carapace length
- FW
- frontal width
- FMSH
- frontal median spine height
- DFLS
- distance between frontal lateral spines
- DFMS
- distance between frontal median spines
- SW
- sternum width
- AW
- abdomen width
- 3PML
- third periopod merus length
- 3PCL
- third periopod carpus length
- 5PL
- fifth periopod dactyl length
- 5PW
- fifth periopod dactyl width
- DL
- dactyl length
- PD
- propodus depth
- PL
- propodus length
- ML
- merus length
- PW
- propodus width
- IPS
- inner propodus spine
- OPS
- outer propodus spine
- OCS
- outer carpus spine
- ICS
- inner carpus spine