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Previous issue date: 2012-02-24 / A taxonomic revision and phylogenetic analysis of the genus Dasyloricaria were performed. This group belongs to the catfish family Loricariidae, subfamily Loricariinae and its distribution is strictly Trans Andean. Within the loricariines, individuais in Das yloricar?a can reach more than 20 cm of Standard Length. The taxonomic revision was based on 142 specimens of the main river basins of Colombia, Venezuela and Panama, from which were obtained rneasurements and counts. In this study are proposed as valid the species Dasylor?car?a jilarnentosa (Steindachner) from the upper, middie and lower Magdaiena River, lower Cauca River and Sin? River basin in Colombia, and the Maracaibo Lake basin m Venezuela, and Dasyloricaria latiura (Eigenmann & Vance) from the Atrato River basin in Colombia and Tuyra River basin m Panama, as well as a description of a new species, Dasyloricaria n. sp., from the middie and upper portions of the Magdaiena River, Coiombia. Redescriptions of the previousiy described species and the description of the new species are presented, including diagnosis, color in alcohol, distribution, sexual dimorphism, comments on each species, and an identification key of the species. After the taxonomic revision, a phylogenetic analysis was conducted based on 187 morphological characters (osteology and extemal morphology) and 23 terminal taxa. Species belonging to five subfamilies of the Loricariidae were included: Dasyloricaria filarnentosa, D. latiura, Dasyloricaria n. sp, Rineloricaria strigilata, R. microlepidogaster, Spatuloricaria sp. Tocantins, Spatuloricaria sp. Xingu, Ixinandria steinbachi, Loricaria cataphracta, L. clavipinna, Pseudoloricaria sp., Pseudoherniodon sp., Loricariichthys anus, Hemiodontichthys acipenserinus, Harttia loricarformis, Siurisorna rostratum, S. robustum (Loricariinae), Hypostomus pyrineusi, Ancistrus reisi (Hypostominae), Eurycheilichthys pantherinus, Otocinclus xakriaba (Hypoptopomatmae), Neoplecostomus microps (Neoplecostominae), and Delturus brevis (Delturinae). Were obtained three equaily most parsimonious trees of 1006 steps each, consistency index of 0.34 and retention index of 0.52. Dasyloricaria was recovered as a monophyletic unit, presenting nine unique synapomorphies. Spatuloricaria is proposed as the sister group of Dasyioricaria. This ciade is supported by tbree unique synapomorphies, and was observed to be the most derived clade within the analysis. Rineloricariina sensu Isbr?cker was not recovered as inonophyletic. Relationships between Rineloricaria and (Spatuloricaria + Dasyloricaria) vere not resolved, even when they were found related within the analysis. Harttiini is found as monophyletic, including the genera Harttia and Sturisoma. Also, both Loricariini and Loricariinae are recovered as monophyletic. / Foram realizadas a revis?o taxon?mica e uma an?lise filogen?tica do g?nero Dasyloricaria. Este grupo de cascudos pertence ? fam?lia Loricariidae, subfam?lia Loricariinae e a sua distribui??o ? estritamente Transandina. Dentro dos loricarineos, em Das yloricaria se encontram indiv?duos que podem atingir mais de 20 cm de Comprimento Padr?o. A revis?o taxon?mica foi baseada em 142 exemplares das principais bacias da Col?mbia, Venezuela e Panam?, dos quais foram obtidas medidas e contagens. S?o propostas como v?lidas as esp?cies Dasyioncaria Jilamentosa (Steindachner) das por??es alta, m?dia e baixa do rio Magdalena, baixo rio Cauca e bacia do rio Sin? na Col?mbia, e bacia do lago de Maracaibo na Venezuela, e Dasyloricaria latiura (Eigenmann & Vance) da bacia do rio Atrato na Col?mbia e bacia do rio Tuira no Panam?, al?m da descri??o de urna nova esp?cie, Dasyloricaria sp, nov., da por??o m?dia e alta do rio Magdalena, na Col?mbia. Foram realizadas as redescri??es das esp?cies previamente descritas e a descri??o da nova esp?cie, assim como diagnoses, colora??o no ?lcool, distribui??o, dimorfismo sexual, coment?rios em cada uma delas e uma chave de identifica??o das esp?cies. Posterior ? revis?o taxon?mica, uma an?lise filogen?tica foi realizada. Esta an?lise foi conduzida a partir de 187 caracteres morfol?gicos (osteologia e morfologia externa) e 23 t?xons terminais. Foram incluidas esp?cies pertencentes a cinco subfam?lias de Loricariidae: Das loricaria filarnentosa, D. latiura, Dasyloricaria sp. nov., Rineloricaria strigilata, R. microlepidogaster, Spatuloricaria sp. Tocantins, Spatu?oricaria sp. Xingu, Ixinandria steinbachi, Loricaria cataphracta, L. ciavipinna, Pseudo?oricaria sp., Pseudoherniodon sp., Loricariichthys anus, Hemiodontichthys acipenserinus, Harttia loricarfrmis, Sturisoma rostratum, S. robustum (Loricariinae), Hypostornus pyrineusi, Ancistrus reisi (Hypostorninae), Eurycheilichthys pantherinus, Otocinclus xakriaba (Hypoptopomat?nae), Neoplecostomus rnicrops (Neoplecostominae) e Delturus brevis (Delturinae). Foram obtidas tr?s ?rvores igualmente parcimoniosas de 1006 passos, ?ndice de consist?ncia de 0,34 e ?ndice de reten??o de 0,52. Dasyloricaria foi recuperado corno um grupo monofiletico apresentando nove s?napomorfias exclusivas. Spatuloricaria ? proposto ser o grupo irm?o de Dasyloricaria. Este dado ? suportado por tr?s smapomorfias exclusivas, e ? observado ser o agrupamento mais derivado dentro da an?lise. Rineloricarima sensu Isbr?cker n?o foi recuperado como monofil?tico. As rela??es entre Rineloricaria e (Spatuloricaria + Dasylor?caria) n?o foram resolvidas, ainda quando foram achados pr?ximos na an?lise. Harttiini foi encontrada monofiletica, incluindo os g?neros Harttia e Sturisoma. Igualmente, tanto Loricariini, como Loricariinae s?o recuperadas como monofil?ticas.
| Identifer | oai:union.ndltd.org:IBICT/oai:tede2.pucrs.br:tede/227 |
| Date | 24 February 2012 |
| Creators | Burbano, Alejandro Londo?o |
| Contributors | Reis, Roberto Esser dos |
| Publisher | Pontif?cia Universidade Cat?lica do Rio Grande do Sul, Programa de P?s-Gradua??o em Zoologia, PUCRS, BR, Faculdade de Bioci?ncias |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da PUC_RS, instname:Pontifícia Universidade Católica do Rio Grande do Sul, instacron:PUC_RS |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 2008925231902741151, 500, 600, 36528317262667714 |
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