Two new ornamental loricariid catfishes of Baryancistrus from rio Xingu drainage (Siluriformes: Hypostominae)
Author
Py-Daniel, Lúcia Rapp
Coleção de Peixes, Programa de Coleções e Acervos Científicos (PCAC), Instituto Nacional de Pesquisas da Amazônia (INPA). Av. André Araújo, 2936, 69011 - 970 Petrópolis, Manaus, AM, Brazil
Author
Zuanon, Jansen
Coordenação de Pesquisas em Biologia Aquática (CPBA), Instituto Nacional de Pesquisas da Amazônia (INPA). Av. Andre Araújo, 2936, 69011 - 970 Petrópolis, Manaus, AM, Brazil
Author
Oliveira, Renildo Ribeiro de
Coleção de Peixes, Programa de Coleções e Acervos Científicos (PCAC), Instituto Nacional de Pesquisas da Amazônia (INPA). Av. André Araújo, 2936, 69011 - 970 Petrópolis, Manaus, AM, Brazil
text
Neotropical Ichthyology
2011
2011-06-30
9
2
241
252
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000200001&lng=en&tlng=en
journal article
313393
10.1590/S1679-62252011000200001
99a7ee0d-5607-4d11-996f-da6f3685f61a
1982-0224
4647488
Table 1. Morphometric and meristic data of Baryancistrus xanthellus and Baryancistrus chrysolomus.| Measurement | Baryancistrus xanthellus | Baryancistrus chrysolo mus |
|---|
| Holotype | N | Mean | Range | SD | Holotype | N | Mean | Range | SD |
|---|
| Standard length (mm) | 214.2 | 62 | - | 46.3-224.1 | - | 219.0 | 20 | - | 4 7.4-219.0 | - |
|---|
| Percents of st andard length |
|---|
| Predorsal length | 43.4 | 62 | 44.7 | 40.2-47.8 | 1.4 | 41.3 | 20 | 42.2 | 39.6 -45.1 | 1.2 |
|---|
| Head length | 35.8 | 62 | 37.7 | 35.3-41.0 | 1.4 | 33.7 | 20 | 36.6 | 33.6 -39.5 | 1.6 |
|---|
| Cleithral width | 33.7 | 62 | 34.4 | 31.0-37.5 | 1.5 | 34.3 | 20 | 34.4 | 32.9 -36.5 | 0.8 |
|---|
| Thorax length | 25.0 | 62 | 24.3 | 20.9-27.3 | 1.3 | 21.7 | 20 | 24.1 | 21.0 -26.2 | 1.4 |
|---|
| Pectoral-spine len gth | 33.7 | 62 | 33.0 | 25.7-38.7 | 3.3 | 34.9 | 20 | 32.0 | 28.5 -36.1 | 2.2 |
|---|
| Abdominal length | 24.3 | 62 | 24.6 | 21.5-27.7 | 1.4 | 25.1 | 20 | 24.3 | 20.9 -26.7 | 1.6 |
|---|
| Pelvic-spine length | 24.2 | 62 | 25.9 | 23.1-29.3 | 1.4 | 25.1 | 20 | 25.0 | 23.5 -27.0 | 0.8 |
|---|
| Postanal length | 21.3 | 62 | 27.8 | 21.3-30.7 | 1.7 | 31.1 | 20 | 29.5 | 26.6 -31.5 | 1.1 |
|---|
| Anal-fin spine length | 10.8 | 62 | 10.1 | 7.6-13.3 | 0.9 | 10.6 | 19 | 10.6 | 9.1-12.0 | 0.7 |
|---|
| Dorsal spine length | 25.6 | 62 | 26.6 | 22.8-32.1 | 1.9 | 26.0 | 20 | 27.0 | 24.0 -29.7 | 1.6 |
|---|
| Dorsal-fin base length | 40.6 | 62 | 40.5 | 35.4-48.0 | 2.7 | 41.2 | 20 | 39.3 | 36.5 -43.3 | 2.0 |
|---|
| Dorsal-ad ipose distance | 1.3 | 62 | 1.1 | 0-2.7 | 0.9 | 1.6 | 20 | 1.7 | 0.5 -4.0 | 1.1 |
|---|
| Caudal penduncle d epth | 10.6 | 62 | 10.7 | 9.0-12.3 | 0.8 | 11.3 | 20 | 10.6 | 9.4-11.9 | 0.6 |
|---|
| Adipose-spine length | 7.8 | 62 | 7.9 | 6.4-9.1 | 0.6 | 8.3 | 20 | 8.2 | 7.1 -9.2 | 0.6 |
|---|
| Adipose-caudal length | 21.1 | 62 | 22.4 | 19.5-24.8 | 0.9 | 25.2 | 20 | 23.5 | 21.2 -26.1 | 1.1 |
|---|
| Body depth at dorsal-fin origin | 22.2 | 62 | 22.1 | 17.1-26.8 | 1.9 | 21.2 | 20 | 20.4 | 16.6 -22.9 | 1.8 |
|---|
| Body width at dorsal-fin origin | 31.9 | 62 | 31.9 | 27.7-37.1 | 2.0 | 32.4 | 20 | 30.6 | 27.9 -34.0 | 1.7 |
|---|
| Body width at anal-fin origin | 17.6 | 62 | 16.9 | 12.6-20.5 | 1.7 | 18.7 | 20 | 15.7 | 12.4 -19.3 | 2.1 |
|---|
| Postdorsal length | 22.8 | 62 | 23.3 | 19.1-25.7 | 1.4 | 26.0 | 20 | 25.5 | 23.4 -27.7 | 1.2 |
|---|
| Anus-anal fin len gth | 3.6 | 62 | 4.1 | 2.9-5.6 | 0.6 | 4.5 | 20 | 4.1 | 3.3 -5.7 | 0.6 |
|---|
| Body width | 36.5 | 62 | 36.1 | 33.3-39.3 | 1.3 | 36.3 | 20 | 36.3 | 35.2 -37.8 | 0.8 |
|---|
| Percents of head length |
|---|
| Orb ital diameter | 15.4 | 62 | 18.4 | 15.1-23.4 | 2.3 | 17.3 | 20 | 21.6 | 17.1 -24.9 | 2.9 |
|---|
| Sn out length | 74.8 | 62 | 67.2 | 60.6-74.8 | 3.1 | 64.0 | 20 | 61.9 | 58.5 -66.5 | 2.8 |
|---|
| Internares width | 13.8 | 62 | 13.0 | 9.4-15.6 | 1.6 | 14.5 | 20 | 12.3 | 9.6-15.7 | 1.6 |
|---|
| Interorbital width | 37.5 | 62 | 36.0 | 28.0-41.4 | 3.9 | 41.8 | 20 | 36.7 | 31.4 -45.2 | 4.1 |
|---|
| Head depth | 57.6 | 62 | 56.3 | 46.5-66.8 | 4.3 | 63.7 | 20 | 54.0 | 47.1 -63.7 | 5.3 |
|---|
| Dentary len gth | 21.2 | 62 | 19.5 | 16.7-24.4 | 1.6 | 23.2 | 20 | 20.6 | 17.3 -24.9 | 2.3 |
|---|
| Premaxillary length | 21.3 | 62 | 19.3 | 15.9-22.6 | 1.4 | 23.7 | 20 | 19.9 | 16.1 -23.7 | 2.1 |
|---|
| Head width | 103.9 | 62 | 90.5 | 77.2-103.9 | 7.2 | 100.4 | 20 | 89.3 | 7 9.1-100.4 | 6.6 |
|---|
| Eye-nostril length | 16.3 | 62 | 14.7 | 9.1-17.8 | 2.2 | 15.5 | 20 | 13.2 | 10.2 -17.9 | 2.3 |
|---|
| Interbranchial distance | 59.6 | 62 | 56.5 | 51.8-60.9 | 2.4 | 58.8 | 20 | 57.7 | 53.6 -61.2 | 2.2 |
|---|
| | | | | | | | | | |
|---|
| Teeth on premaxilla | 60 | 62 | | 28-72 | | 74 | 20 | | 14 -91 | |
|---|
| Teeth on dentary | 64 | 62 | | 25-76 | | 81 | 20 | | 22 -96 | |
|---|
| Lateral plates in middle series | 24 | 62 | | 23-24 | | 24 | 20 | | 24 -25 | |
|---|
| Plates between anal and caudal | 10 | 62 | | 9-11 | | 10 | 20 | | 10 -11 | |
|---|
| Plates between dorsal and adipose | 0 | 62 | | 0-2 | | 0.5 | 20 | | 0 -2 | |
|---|
| Plates predorsal | 3 | 62 | | 3 | | 3 | 20 | | 3 | |
|---|