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
314778
10.1590/1982-0224-20150146
635170d7-a205-45be-90c7-807cc6d17f50
1982-0224
13331233
Table 9. Morphometrics for Brachyhypopomus bombilla. HT., holotype; SD, standard deviation. Data for holotype (Rocha, Uruguay) are from Loureiro & Silva (2006). Ranges for the type region (laguna dos Patos drainage of Brazil) refer to nontype specimens (data for holotype excluded). Ranges for the other populations refer to non-type specimens from the Paraguay drainage of Brazil and Paraguay (Paraná drainage) and the rio Beni drainage of Bolivia (Upper Madeira drainage). | laguna dos Patos drainage (type region) | Paraguay drainage | Upper Madeira drainage |
|---|
| HT | Range | Mean | SD | n | Range | Mean | SD | n | Range | Mean | SD | n |
|---|
| Total length (TL) (mm) | 153.8 | 56-160 | 104 | 37.7 | 10 | 75-104 | 91 | 10.3 | 15 | 75-104 | 92 | 11.1 | 6 |
|---|
| Length to end of anal fin (LEA) (mm) | 130.9 | 49-137 | 89 | 31.6 | 10 | 61-87 | 73 | 9.5 | 15 | 67-94 | 82 | 8.4 | 10 |
|---|
| Head length (HL) (mm) | 18.0 | 6.9-18.0 | 10.6 | 3.7 | 11 | 7.9-10.5 | 9.2 | 0.9 | 15 | 8.8-11.7 | 10.5 | 0.9 | 10 |
|---|
| Proportion of TL (%) |
|---|
| Caudal filament length (CF) | 14.9 | 12.1-15.4 | 13.8 | 1.1 | 10 | 14.9-21.8 | 18.5 | 1.9 | 14 | 9.3-20.2 | 14.2 | 4.2 | 6 |
|---|
| Proportion of LEA (%) |
|---|
| Head length (HL) | 11.7 | 10.5-14.6 | 12.5 | 1.4 | 10 | 11.2-13.7 | 12.6 | 0.7 | 15 | 11.7-14.2 | 12.8 | 0.8 | 10 |
|---|
| Snout to occiput (SO) | | 9.0-12.2 | 10.5 | 1.1 | 9 | 7.6-12.1 | 10.0 | 1.0 | 15 | 9.2-13.6 | 10.9 | 1.6 | 10 |
|---|
| Snout to anal-fin origin (SA) | | 18.6-22.6 | 20.5 | 1.3 | 9 | 20.2-27.0 | 22.4 | 1.7 | 15 | 20.6-24.0 | 22.1 | 1.0 | 10 |
|---|
| Snout to pectoral-fin base (PP) | | 12.7-16.1 | 14.2 | 1.3 | 10 | 12.9-14.9 | 14.1 | 0.5 | 15 | 12.9-16.1 | 14.4 | 1.1 | 10 |
|---|
| Longest pectoral-fin ray (PRL) | 6.3 | 3.6-6.3 | 5.1 | 0.8 | 10 | 5.3-6.7 | 5.9 | 0.4 | 14 | 4.9-6.4 | 5.4 | 0.5 | 10 |
|---|
| Anal fin length (AF) | 81.5 | 77.2-83.9 | 80.2 | 2.3 | 10 | 73.4-80.3 | 78.1 | 2.1 | 15 | 76.3-80.6 | 78.4 | 1.3 | 10 |
|---|
| Longest anal-fin ray (ARL) | | 3.1-5.2 | 4.4 | 0.7 | 10 | 4.2-5.1 | 4.5 | 0.3 | 15 | 3.1-4.9 | 4.1 | 0.6 | 10 |
|---|
| Body depth at anal-fin origin (BD1) | 10.5 | 10.2-12.0 | 11.0 | 0.6 | 10 | 9.5-13.0 | 11.4 | 0.9 | 15 | 10.0-11.9 | 10.7 | 0.5 | 10 |
|---|
| Body width at anal-fin origin (BW1) | 4.9 | 5.5-6.6 | 6.0 | 0.4 | 10 | 5.1-7.1 | 6.0 | 0.5 | 15 | 4.7-6.5 | 5.6 | 0.6 | 10 |
|---|
| Body depth at anal-fin middle (BD2) | | 7.7-9.6 | 8.8 | 0.6 | 10 | 8.7-11.1 | 9.9 | 0.8 | 15 | 8.2-10.6 | 9.5 | 0.8 | 10 |
|---|
| Body width at anal-fin middle (BW2) | | 2.1-3.1 | 2.7 | 0.3 | 10 | 2.6-4.0 | 3.2 | 0.4 | 15 | 2.1-3.8 | 3.0 | 0.6 | 10 |
|---|
| Caudal filament length (CF) | 17.5 | 14.0-18.3 | 16.0 | 1.5 | 10 | 17.6-27.9 | 22.6 | 3.1 | 15 | 10.5-25.3 | 16.9 | 5.9 | 6 |
|---|
| Proportion of HL (%) |
|---|
| Preorbital distance (PR) | 23.5 | 24.4-27.7 | 26.2 | 1.3 | 11 | 20.3-26.0 | 24.0 | 1.4 | 15 | 22.4-27.5 | 24.7 | 1.5 | 10 |
|---|
| Mouth width (MW) | 17.0 | 17.5-28.9 | 25.0 | 3.9 | 11 | 21.7-30.4 | 25.5 | 2.4 | 15 | 20.9-31.5 | 24.9 | 3.6 | 10 |
|---|
| Internarial distance (AE) | | 15.4-22.1 | 20.4 | 2.2 | 11 | 19.0-21.6 | 20.1 | 0.6 | 15 | 17.3-21.5 | 19.6 | 1.4 | 10 |
|---|
| Posterior naris to eye (PE) | | 4.4-6.8 | 5.9 | 0.8 | 11 | 3.6-6.1 | 5.3 | 0.7 | 15 | 4.4-7.5 | 5.8 | 1.0 | 10 |
|---|
| Orbital diameter (OD) | 9.8 | 7.4-11.4 | 9.8 | 1.3 | 11 | 9.5-12.2 | 10.4 | 0.7 | 15 | 9.0-12.4 | 10.2 | 1.1 | 10 |
|---|
| Interorbital distance (IO) | 19.0 | 15.4-27.5 | 20.9 | 3.7 | 11 | 18.1-23.6 | 21.1 | 1.7 | 15 | 16.6-21.2 | 18.1 | 1.3 | 10 |
|---|
| Head depth at eye (HD1) | | 36.3-47.1 | 43.8 | 3.5 | 11 | 37.9-43.8 | 41.2 | 1.9 | 15 | 38.9-47.7 | 41.1 | 2.9 | 10 |
|---|
| Head width at eye (HW1) | | 32.7-42.9 | 38.3 | 3.1 | 11 | 33.7-44.1 | 37.7 | 2.7 | 15 | 31.7-40.0 | 35.5 | 3.2 | 10 |
|---|
| Head depth at occiput (HD2) | 75.2 | 64.8-75.3 | 69.8 | 2.6 | 11 | 59.8-76.8 | 67.2 | 4.5 | 15 | 60.7-69.2 | 66.1 | 2.6 | 10 |
|---|
| Head width at occiput (HW2) | 52.3 | 45.1-57.5 | 53.9 | 4.3 | 9 | 48.6-55.8 | 51.5 | 2.2 | 15 | 42.8-53.4 | 48.5 | 3.4 | 10 |
|---|
| Postorbital distance (PO) | 62.1 | 61.6-71.5 | 65.0 | 2.6 | 11 | 61.8-72.3 | 65.2 | 2.7 | 15 | 60.0-67.7 | 63.6 | 2.6 | 10 |
|---|
| Branchial aperture (BO) | 19.0 | 18.0-21.5 | 19.7 | 1.1 | 11 | 14.2-23.7 | 19.0 | 2.9 | 15 | 17.4-23.4 | 19.7 | 2.2 | 10 |
|---|
| Pectoral-fin base (PB) | | 8.4-11.7 | 10.1 | 1.2 | 11 | 7.0-11.5 | 9.2 | 1.3 | 14 | 7.7-10.0 | 8.9 | 0.9 | 10 |
|---|
| Caudal filament depth (CD) | | 11.2-17.2 | 13.7 | 1.7 | 11 | 10.6-15.1 | 13.7 | 1.3 | 15 | 9.6-15.6 | 12.4 | 2.0 | 9 |
|---|
| Caudal filament width (CW) | | 4.0-8.4 | 6.0 | 1.3 | 11 | 5.3-8.9 | 6.7 | 1.1 | 15 | 4.0-7.2 | 5.3 | 1.0 | 10 |
|---|
| Other proportions |
|---|
| BW1 (% of BD1) | | 46.1-61.7 | 54.0 | 4.2 | 11 | 48.5-59.6 | 52.8 | 2.3 | 15 | 45.9-59.1 | 51.9 | 5.2 | 10 |
|---|
| BW2 (% of BD2) | | 27.7-34.6 | 30.7 | 2.3 | 11 | 26.0-37.8 | 32.4 | 2.6 | 15 | 25.7-36.3 | 31.3 | 4.0 | 10 |
|---|