Redescription and phylogenetic position of the enigmatic Neotropical electric fish Iracema caiana Triques (Gymnotiformes: Rhamphichthyidae) using x-ray computed tomography
Author
Carvalho, Tiago P.
University of Louisiana at Lafayette, Department of Biology, P. O. Box 42451, Lafayette, LA 70504, USA
tiagobio2002@yahoo.com.br
Author
Albert, James S.
University of Louisiana at Lafayette, Department of Biology, P. O. Box 42451, Lafayette, LA 70504, USA
jalbert@louisiana.edu
text
Neotropical Ichthyology
2011
2011-12-31
9
3
457
469
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000300001&lng=en&tlng=en
journal article
313804
10.1590/S1679-62252011000300001
45ba7112-fb75-4b73-b7cc-f8a722e12bdc
1982-0224
5422881
Table 1. Morphometrics and meristics of types of Iracema caiana. SD= standard deviation, and N= number of specimens. | Holotype | N | Low | High | Mean | SD |
|---|
| Standard length (mm) | 3 60 | 4 | 208 | 360 | 286 | - |
|---|
| Percents of Standard Length |
|---|
| Anal-fin len gth | 87.5 | 4 | 85.8 | 87.5 | 86.7 | 0.7 |
|---|
| Body depth | 8.2 | 4 | 7.8 | 8.6 | 8.3 | 0.3 4 |
|---|
| Pectoral-fin length | 4.6 | 4 | 4.2 | 5.8 | 4.8 | 0.6 7 |
|---|
| Head length | 11.5 | 4 | 11.5 | 13.0 | 12.2 | 0.6 7 |
|---|
| Caudal filament length | - | 3 | 41.2 | 54.8 | 45.7 | 7.8 7 |
|---|
| Caudal filament depth | 1.1 | 4 | 1.1 | 1.3 | 1.2 | 0.0 8 |
|---|
| Percents of Head Length |
|---|
| Interorbital distance | 11.9 | 4 | 10.7 | 12.1 | 11.6 | 0.6 1 |
|---|
| Snout length | 55.4 | 4 | 53.8 | 55.4 | 54.7 | 0.7 4 |
|---|
| Postorbital length | 39.9 | 4 | 39.1 | 40.3 | 39.7 | 0.6 |
|---|
| Eye diameter | 6.3 | 4 | 6.3 | 7.9 | 7.0 | 0.6 9 |
|---|
| Distance to posterior nares | 22.3 | 4 | 21.3 | 24.1 | 22.9 | 1.3 0 |
|---|
| Op ercular opening | 15.5 | 4 | 14.8 | 17.7 | 16.1 | 1.2 3 |
|---|
| Meristics | Mean | Mode |
|---|
| Anal-fin rays | 2 40 | 4 | 240 | 257 | 250 | - |
|---|
| Pectoral-fin rays | 16 | 3 | 16 | 17 | 16.7 | 1 7 |
|---|