Revision of the species of the genus Cathorops (Siluriformes: Ariidae) from Mesoamerica and the Central American Caribbean, with description of three new species
Author
Marceniuk, Alexandre P.
Museu de Zoologia da Universidade de São Paulo, Caixa Postal 42494, 04218 - 970 São Paulo, SP, Brazil
a_marceniuk@hotmail.com
Author
Betancur-R, Ricardo
Department of Biological Sciences, Auburn University, 331 Funchess Hall, Auburn, AL 36849, USA
betanri@auburn.edu
text
Neotropical Ichthyology
2008
2008-03-31
6
1
25
25
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000100004&lng=en&tlng=en
journal article
312306
10.1590/S1679-62252008000100004
20063e32-2edc-4e82-9daa-ca17286cea93
1982-0224
5419649
Table3. Morphometrics for Cathorops belizensis. Standard length is expressed in millimeters, other measurements are percents of standard length. Ranges include paratypes only. | Holot. | n | Males | n | Females | n | Uncertain |
|---|
| Mean | Range | Mean | Range | Range |
|---|
| Standard length (mm) | 175.0 | 9 | - | 147.0-211.0 | 2 | - | 175.0-240.0 | 5 | 192.0-248.0 |
|---|
| Head length | 25.8 | 9 | 30.8 | 29.4-31.9 | 2 | 27.9 | 25.8-30.0 | 5 | 27.0-30.0 |
|---|
| Snout length | 7.1 | 9 | 7.7 | 6.9-8.9 | 2 | 7.8 | 7.1-8.4 | 5 | 7.7-8.7 |
|---|
| Distance between anterior nostrils | 5.1 | 9 | 5.8 | 5.4-6.1 | 2 | 5.6 | 5.1-6.1 | 4 | 5.4-5.7 |
|---|
| Distance between posterior nostrils | 5,9 | 9 | 7.1 | 6.6-7.6 | 2 | 6.7 | 5.9-7.6 | 4 | 6.8-7.3 |
|---|
| Distance between anterior nostril to orbit | 6.7 | 7 | 7.1 | 6.7-7.5 | 2 | 6.8 | 6.7-6.8 | - | - |
|---|
| Distance between posterior nostril to orbit | 4.9 | 9 | 5.1 | 4.7-5.4 | 2 | 4.9 | 4.9-4.9 | 4 | 4.6-5.0 |
|---|
| Orbital diameter | 3.9 | 9 | 4.3 | 3.9-4.4 | 2 | 3.8 | 3.6-3.9 | 5 | 3.9-4.3 |
|---|
| Interorbital distance | 13.2 | 9 | 14.5 | 13.9-15.1 | 2 | 13.1 | 13.0-13.2 | 4 | 12.9-14.2 |
|---|
| Maxillary barbel length | 31.8 | 9 | 30.9 | 24.7-35.0 | 2 | 28.0 | 24.3-31.8 | 5 | 26.1-31.0 |
|---|
| External mental barbel length | 21.9 | 9 | 19.8 | 15.6-24.6 | 2 | 18.0 | 14.2-21.9 | 5 | 19.3-21.0 |
|---|
| Internal mental barbel length | 13.9 | 9 | 12.6 | 10.7-14.1 | 2 | 12.0 | 10.1-13.9 | 5 | 12.1-13.7 |
|---|
| Distance from snout to maxillary barbel | 3.1 | 7 | 2.1 | 1.6-2.6 | 2 | 3.2 | 3.1-3.3 | - | - |
|---|
| Distance from snout to external mental barbel | 3.3 | 7 | 3.2 | 2.0-4.9 | 2 | 3.3 | 3.3-3.4 | - | - |
|---|
| Distance from snout to internal mental barbel | 2.3 | 7 | 2.4 | 1.5-4.5 | 2 | 2.7 | 2.3-3.1 | - | - |
|---|
| Mouth width | 10.1 | 9 | 11.5 | 10.6-12.1 | 2 | 11.6 | 10.1-13.2 | 5 | 10.0-11.8 |
|---|
| Lower-jaw length | 3.0 | 7 | 2.5 | 1.6-3.4 | 2 | 2.2 | 1.4-3.0 | - | - |
|---|
| Premaxilla length | 1.4 | 7 | 1.4 | 1.1-2.0 | 2 | 1.2 | 0.9-1.4 | - | - |
|---|
| Premaxilla width | 6.3 | 7 | 8.3 | 7.2-11.9 | 2 | 7.0 | 6.3-7.7 | - | - |
|---|
| Distance between accessory tooth plates | 5.0 | 7 | 6.5 | 4.4-7.9 | 2 | 5.7 | 5.0-6.3 | - | - |
|---|
| Length of accessory tooth plates | 4.3 | 7 | 3.3 | 2.6-4.6 | 2 | 5.0 | 4.3-5.7 | - | - |
|---|
| Width of accessory tooth plates | 1.8 | 7 | 1.3 | 0.9-2.0 | 2 | 2.1 | 1.8-2.4 | - | - |
|---|
| Width of cephalic shield at lateral ethmoid area | 12.3 | 9 | 13.6 | 13.3-14.0 | 2 | 12.5 | 12.3-12.6 | 4 | 12.1-13.1 |
|---|
| Width of cephalic shield at frontals area | 6.8 | 9 | 6.9 | 6.6-7.3 | 2 | 6.5 | 6.2-6.8 | 4 | 6.2-7.1 |
|---|
| Width of cephalic shield at epioccipital area | 12.6 | 7 | 11.6 | 11.3-12.5 | 2 | 11.9 | 11.2-12.6 | - | - |
|---|
| Width of cephalic shield at supracleithrum area | 17.5 | 9 | 17.9 | 17.4-18.9 | 2 | 17.8 | 17.5-18.0 | 4 | 16.7-18.0 |
|---|
| Distance between lateral ethmoid and supracleithrum | 22.2 | 7 | 25.8 | 24.8-26.4 | 2 | 22.9 | 22.2-23.7 | - | - |
|---|
| Distance between snout and post. margin of dorsomedian groove of neurocranium | 23.6 | 7 | 26.8 | 26.3-27.3 | 2 | 25.4 | 23.6-27.1 | - | - |
|---|
| Supraoccipital process length | 10.5 | 9 | 9.5 | 8.8-10.1 | 2 | 10.5 | 10.5-10.5 | 5 | 9.3-10.1 |
|---|
| Supraoccipital process width | 3.1 | 9 | 2.7 | 2.6-3.0 | 2 | 3.0 | 2.9-3.1 | 5 | 2.8-3.2 |
|---|
| Nuchal-plate length | 6.2 | 7 | 6.2 | 6.0-6.4 | 2 | 5.9 | 5.6-6.2 | - | - |
|---|
| Nuchal-plate width | 7.3 | 9 | 7.1 | 6.2-7.7 | 2 | 6.9 | 6.5-7.3 | 5 | 6.9-7.6 |
|---|
| Body depth | 16.9 | 8 | 18.3 | 17.1-19.6 | 2 | 16.9 | 16.9-17.0 | 5 | 17.1-19.3 |
|---|
| Body width | 20.5 | 9 | 21.7 | 20.8-23.5 | 2 | 21.0 | 20.5-21.5 | 5 | 19.7-22.3 |
|---|
| Distance from snout to pectoral fin | 22.4 | 9 | 28.8 | 26.9-31.1 | 2 | 24.7 | 22.4-27.1 | 5 | 22.5-28.6 |
|---|
| Distance from snout to dorsal fin | 33.5 | 9 | 39.1 | 37.3-40.7 | 2 | 36.3 | 33.5-39.0 | 4 | 38.1-40.4 |
|---|
| Distance from snout to pelvic fin | 52.6 | 9 | 53.2 | 50.0-55.3 | 2 | 53.2 | 52.6-53.8 | 5 | 51.2-54.1 |
|---|
| Distance from snout to adipose fin | 79.4 | 9 | 77.9 | 76.3-79.9 | 2 | 78.7 | 78.1-79.4 | 5 | 74.9-79.2 |
|---|
| Distance from snout to anal fin | 68.5 | 9 | 68.5 | 66.1-70.7 | 2 | 68.5 | 68.5-68.6 | 5 | 65.1-68.6 |
|---|
| Caudal-peduncle height | 8.5 | 9 | 7.8 | 7.2-8.1 | 2 | 8.2 | 7.8-8.5 | 5 | 6.9-8.2 |
|---|
| Pectoral-fin spine length | 17.3 | 9 | 16.1 | 13.7-18.0 | 2 | 16.9 | 16.5-17.3 | 4 | 16.7-17.5 |
|---|
| Dorsal-fin spine length | 17.5 | 8 | 16.9 | 15.9-17.6 | 2 | 17.3 | 17.0-17.5 | - | - |
|---|
| Pelvic-fin base length | 3.7 | 7 | 3.7 | 3.3-4.0 | 2 | 4.1 | 3.7-4.6 | - | - |
|---|
| Pelvic-fin height | 14.6 | 7 | 12.3 | 11.8-12.7 | 2 | 13.9 | 13.3-14.6 | - | - |
|---|
| Adipose-fin base length | 4.8 | 9 | 6.3 | 5.3-7.2 | 2 | 5.7 | 4.8-6.5 | 5 | 5.5-7.5 |
|---|
| Adipose-fin height | 3.8 | 7 | 3.8 | 3.5-4.4 | 2 | 3.9 | 3.8-4.0 | - | - |
|---|
| Anal-fin base length | 17.5 | 9 | 17.9 | 16.6-18.6 | 2 | 18.1 | 17.5-18.6 | 5 | 17.0-18.4 |
|---|
| Anal-fin height | 13.0 | 7 | 12.0 | 10.7-13.4 | 2 | 11.7 | 10.5-13.0 | - | - |
|---|
| Caudal-fin upper lobe length | 31.5 | 7 | 29.5 | 28.2-31.5 | 2 | 31.5 | 31.5-31.5 | - | - |
|---|
| Caudal-fin lower lobe length | 27.8 | 6 | 26.9 | 25.9-28.2 | 2 | 26.7 | 25.5-27.8 | - | - |
|---|