A taxonomic revision of the Neotropical electric fish genus Brachyhypopomus (Ostariophysi: Gymnotiformes: Hypopomidae), with descriptions of 15 new species
Author
Crampton, William G. R.
Department of Biology, University of Central Florida, PO Box 162368, Florida, 32816 - 2368, USA.
crampton@ucf.edu
Author
Santana, Carlos D. de
Division of Fishes, Smithsonian Institution, National Museum of Natural History, 10 th and Constitution Avenue, NW, Washington, DC 20560 - 0159, USA.
apteronotidae@ig.com.br
Author
Waddell, Joseph C.
Department of Biology, University of Central Florida, PO Box 162368, Florida, 32816 - 2368, USA.
joecwaddell@knights.ucf.edu
Author
Lovejoy, Nathan R.
Department of Biological Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, ON M 1 C 1 A 5, Canada
lovejoy@utsc.utoronto.ca
text
Neotropical Ichthyology
2016
e 150146
2016-12-31
14
4
639
790
http://dx.doi.org/10.1590/1982-0224-20150146
journal article
10.1590/1982-0224-20150146
1982-0224
13331233
Table 18. Morphometrics for Brachyhypopomus pinnicaudatus. LT, lectotype; SD, standard deviation. Data for lectotype, ANSP 163463 (Cayenne, French Guiana) are from Hopkins (1991). Ranges for the type region refer to type specimens from the “Grand Pripris”, French Guiana (lectotype not included in ranges). Ranges for the other population refer to non-type specimens from the vicinity of Tefé, Amazonas, Brazil (Central Amazon basin). | Coastal French Guiana (type region) | Central Amazonas drainage |
|---|
| LT | Range | Mean | SD | n | Range | Mean | SD | n |
|---|
| Total length (TL) (mm) | 125.3 | 110-111 | 111.0 | 16.0 | 7 | 79-199 | 132 | 23.8 | 27 |
|---|
| Length to end of anal fin (LEA) (mm) | 87.0 | 82-95 | 88.5 | 12.1 | 7 | 56-137 | 101 | 18.9 | 29 |
|---|
| Head length (HL) (mm) | 11.0 | 8.7-11.9 | 9.8 | 1.0 | 11 | 8.0-15.0 | 11.7 | 1.7 | 29 |
|---|
| Proportion of TL (%) |
|---|
| Caudal filament length (CF) | 31.5 | 13.6-26.1 | 20.3 | 9.3 | 7 | 12.6-31.2 | 22.4 | 3.6 | 27 |
|---|
| Proportion of LEA (%) |
|---|
| Head length (HL) | | 10.9-12.0 | 11.5 | 1.1 | 7 | 10.5-13.1 | 11.5 | 0.7 | 28 |
|---|
| Snout to occiput (SO) | 10.7 | 8.9-10.5 | 9.7 | 1.3 | 7 | 8.2-12.4 | 9.7 | 1.0 | 27 |
|---|
| Snout to anal-fin origin (SA) | 21.3 | 17.9-21.5 | 19.7 | 2.0 | 7 | 18.5-24.6 | 22.0 | 1.7 | 27 |
|---|
| Snout to pectoral-fin base (PP) | 13.7 | 12.5-14.3 | 13.4 | 1.1 | 7 | 11.2-15.2 | 13.2 | 1.0 | 27 |
|---|
| Longest pectoral-fin ray (PRL) | 8.2 | 5.1-6.5 | 5.8 | 0.9 | 7 | 5.2-7.2 | 6.2 | 0.5 | 27 |
|---|
| Anal fin length (AF) | | 78.0-80.0 | 79.0 | 1.1 | 7 | 76.9-84.2 | 81.0 | 1.9 | 28 |
|---|
| Longest anal-fin ray (ARL) | 4.2 | 2.6-4.7 | 4.1 | 0.8 | 7 | 1.5-3.6 | 2.3 | 0.4 | 27 |
|---|
| Body depth at anal-fin origin (BD1) | | 11.9-14.8 | 13.4 | 1.8 | 7 | 11.1-15.4 | 13.4 | 1.4 | 27 |
|---|
| Body width at anal-fin origin (BW1) | | 6.9-8.2 | 7.7 | 0.6 | 7 | 4.9-7.1 | 6.0 | 0.6 | 27 |
|---|
| Body depth at anal-fin middle (BD2) | | 10.4-11.2 | 10.8 | 0.5 | 7 | 7.1-11.5 | 9.0 | 1.0 | 27 |
|---|
| Body width at anal-fin middle (BW2) | | 2.8-3.5 | 3.1 | 0.6 | 7 | 1.8-3.2 | 2.4 | 0.3 | 27 |
|---|
| Caudal filament length (CF) | 45.3 | 15.8-35.4 | 25.6 | 12.1 | 7 | 14.6-45.3 | 29.1 | 6.1 | 27 |
|---|
| Proportion of HL (%) |
|---|
| Preorbital distance (PR) | 28.6 | 21.8-26.7 | 23.9 | 1.6 | 11 | 24.2-28.6 | 27.0 | 1.0 | 29 |
|---|
| Mouth width (MW) | | 18.5-30.4 | 30.8 | 3.2 | 11 | 15.5-21.3 | 18.8 | 1.5 | 29 |
|---|
| Internarial distance (AE) | 22.3 | 20.0-24.6 | 21.6 | 1.6 | 11 | 19.4-24.0 | 22.1 | 1.2 | 29 |
|---|
| Posterior naris to eye (PE) | 4.6 | 2.0-6.0 | 4.0 | 1.3 | 11 | 3.8-6.3 | 4.7 | 0.7 | 29 |
|---|
| Orbital diameter (OD) | 12.3 | 7.5-12.3 | 10.6 | 1.7 | 11 | 9.3-13.1 | 10.8 | 1.0 | 29 |
|---|
| Interorbital distance (IO) | 23.6 | 25.8-39.1 | 31.0 | 5.1 | 11 | 20.6-28.8 | 24.2 | 1.9 | 29 |
|---|
| Head depth at eye (HD1) | | 51.6-56.5 | 54.5 | 1.6 | 11 | 48.6-56.5 | 53.0 | 2.1 | 29 |
|---|
| Head width at eye (HW1) | 49.1 | 35.9-51.9 | 45.7 | 5.2 | 11 | 30.2-42.6 | 36.8 | 3.0 | 29 |
|---|
| Head depth at occiput (HD2) | | 78.3-87.2 | 83.3 | 3.1 | 11 | 74.3-90.2 | 82.2 | 4.2 | 29 |
|---|
| Head width at occiput (HW2) | | 60.8-74.0 | 67.2 | 4.6 | 11 | 48.9-66.0 | 56.3 | 4.3 | 29 |
|---|
| Postorbital distance (PO) | 64.6 | 62.8-68.1 | 65.8 | 1.8 | 11 | 62.5-69.2 | 65.5 | 1.7 | 29 |
|---|
| Branchial aperture (BO) | | 23.6-31.1 | 27.7 | 3.2 | 11 | 20.3-29.8 | 24.2 | 2.2 | 29 |
|---|
| Pectoral-fin base (PB) | | 10.9-16.9 | 14.4 | 2.1 | 11 | 10.6-15.5 | 13.0 | 1.3 | 29 |
|---|
| Caudal filament depth (CD) | | 13.1-18.6 | 5.3 | 4.2 | 7 | 11.3-21.9 | 16.0 | 2.9 | 29 |
|---|
| Caudal filament width (CW) | | 7.4-8.4 | 2.6 | 3.1 | 7 | 3.4-8.8 | 5.7 | 1.2 | 29 |
|---|
| Other proportions |
|---|
| BW1 (% of BD1) | | 52.6-60.0 | 56.3 | 2.9 | 7 | 36.5-50.7 | 44.5 | 3.1 | 29 |
|---|
| BW2 (% of BD2) | | 24.5-36.4 | 33.3 | 4.0 | 7 | 20.0-34.6 | 26.0 | 2.9 | 29 |
|---|