A New Species Of Neotropical Freshwater Stingray Of The Genus Potamotrygon Garman, 1877 From The Río Madre De Díos, Peru (Chondrichthyes: Potamotrygonidae)
Author
Da Silva, João Paulo C. B.
Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo. Rua do Matão, Travessa 14, nº 101, CEP 05508 - 900, São Paulo, SP, Brasil.
jpcbs@ib.usp.br
Author
De Carvalho, Marcelo R.
Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo. Rua do Matão, Travessa 14, nº 101, CEP 05508 - 900, São Paulo, SP, Brasil.
mrcarvalho@ib.usp.br
text
Papéis Avulsos de Zoologia
2011
2011-12-31
51
8
139
154
journal article
304918
10.1590/s0031-10492011000800001
f1d5602a-dcb9-4119-8353-318856edf2d5
1807-0205
10085992
TABLE 1: Morphometric data for Potamotrygon tatianae sp. nov. (Río Madre de Díos, Peru).Data are expressed in millimeters and percentages of disc width (% DW). SD: standard deviation.| MEASUREMENTS | N | mm | Range % DW | Mean % DW | SD % DW |
|---|
| Total length | 7 | 480-755 | 160-214.8 | 195.2 | 18.2 |
|---|
| Disc length | 7 | 283-475 | 102.6-131.2 | 110.3 | 9.5 |
|---|
| Disc width | 7 | 265-362 | — | — | — |
|---|
| Interorbital space | 7 | 32-51 | 10.5-14.1 | 11.8 | 1.1 |
|---|
| Interspiracular space | 7 | 51-75 | 17.9-20.7 | 19 | 0.9 |
|---|
| Eye length | 7 | 9-11 | 2.8-3.8 | 3.2 | 0.4 |
|---|
| Spiracle length | 7 | 19-30 | 7-8.3 | 7.4 | 0.6 |
|---|
| Sting length | 7 | — | — | — | — |
|---|
| Sting width | 7 | — | — | — | — |
|---|
| Preorbital length | 7 | 66-107 | 23.9-29.6 | 25.1 | 2.2 |
|---|
| Prenasal length | 7 | 41-74 | 15.4-21.1 | 18.1 | 2.5 |
|---|
| Preoral length | 7 | 54-95 | 20.4-27.1 | 23.3 | 2.9 |
|---|
| Internarial space | 7 | 23-32 | 8.2-9.3 | 9 | 0.5 |
|---|
| Mouth width | 7 | 23-40 | 7.8-11 | 9.5 | 0.9 |
|---|
| Space between 1st branchial slits | 7 | 61-102 | 22.7-28.2 | 24.9 | 2.1 |
|---|
| Space between 5th branchial slits | 7 | 44-71 | 16.2-19.6 | 17.8 | 1.4 |
|---|
| Branchial basket length | 7 | 44-66 | 15.8-19 | 17.1 | 1.2 |
|---|
| Pelvic fin length | 7 | 60-103 | 20.2-28.5 | 24 | 3.5 |
|---|
| Pelvic fin width | 6 | 144-235 | 54.3-67 | 62.2 | 4.2 |
|---|
| Clasper external edge | 6 | 32-50 | 10.9-13.8 | 12.3 | 1.1 |
|---|
| Clasper internal edge | 7 | 65-95 | 22.3-27.3 | 24.9 | 1.8 |
|---|
| Cloaca to tail tip | 7 | 252-400 | 95-123.7 | 109 | 10.8 |
|---|
| Tail width | 7 | 42-57 | 14-16.2 | 15.5 | 0.7 |
|---|
| Snout to cloaca | 7 | 237-369 | 84.3-106 | 92.4 | 9.2 |
|---|
| Pectoral axil to posterior edge of pelvic fin | 7 | 35-66 | 11.9-18.2 | 13.5 | 2 |
|---|
| Cloaca to sting | 7 | 145-217 | 53.3-62.4 | 57.8 | 3.3 |
|---|