|
Registrieren | Hilfe | Mitgliederliste | Mitgliederkarte | Kalender | Heutige Beiträge | Suchen |
|
Themen-Optionen | Ansicht |
21.12.2017, 22:03 | #1 |
Moderator
Registriert seit: 14.08.2005
Ort: Ludwigsburg
Beiträge: 5.325
|
An appraisal of the phylogenetic relationships of Hypoptopomatini cascudinhos with description of two new genera and three new species
An appraisal of the phylogenetic relationships of Hypoptopomatini cascudinhos with description of two new genera and three new species (Siluriformes: Loricariidae)
Maria Laura S. Delapieve, Pablo Lehmann und Roberto E. Reis Abstract The discovery of three new taxa of Hypoptotopomatini with ambiguous generic assignment prompted a reanalysis of the phylogenetic relationships of the tribe. The analysis focused on a data matrix of 56 terminals and 107 morphological characters comprising the three new taxa, most species of Hypoptopoma and Otocinclus, and all other species of the tribe. The 162 maximally parsimonious trees of 382 steps, consistency index of 0.41, and retention index of 0.83 were then summarized in a strict consensus tree. The results confirm the monophyly of the Hypoptopomatini, recover four genera as monophyletic (Acestridium, Hypoptopoma, Niobichthys, and Otocinclus), revealed Hypoptopoma and Oxyropsis to be non-monophyletic; and revealed two new genera within Hypoptopomatini. Additionally, Otocinclus was found to be sister to a group with all remaining genera of the tribe; Acestridium and Niobichthys were found to be sister to each other and that clade sister to a group formed by ((Leptotocinclus + Hypoptopoma [part]) + (Nannoxyropsis (Oxyropsis + Hypoptopoma [part]))). Based on this framework, changes to the classification and the taxonomy of the Hypoptopomatini are suggested and the new taxa are described. -- Die neuen Arten und Gattungen: Leptotocinclus ctenistus (Typusart) Leptotocinclus madeirae Nannoxyropsis acicula (Typusart) Nannoxyropsis ephippia (vormals Oxyropsis) Übrigens wird in der Arbeit die Gattung Nannoptopoma auch wieder offiziell revalidiert; wir hatten in unser Datenbank die Synonymisierung mit Hypotopoma ohnehin gar nicht erst umgesetzt. Den Rest der Arbeit muss ich mir erst noch in Ruhe durchlesen, sollte in den nächsten Tagen ja drin sein... Hier der Link. Gruß, Karsten
__________________
Parotocinclus britskii, P. haroldoi, Corydoras bicolor, C. boesemani, C. coppenamensis, C. guianensis, C. nanus, C. punctatus, Harttiella crassicauda, Paralithoxus gr. bovalli, P. plallidimaculatus, P. planquetti, P. surinamensis, Pseudancistrus kwinti,... Geändert von Karsten S. (31.12.2017 um 11:04 Uhr). Grund: Links zu DB eingefügt |
17.01.2018, 18:06 | #2 |
Moderator
Registriert seit: 14.08.2005
Ort: Ludwigsburg
Beiträge: 5.325
|
__________________
Parotocinclus britskii, P. haroldoi, Corydoras bicolor, C. boesemani, C. coppenamensis, C. guianensis, C. nanus, C. punctatus, Harttiella crassicauda, Paralithoxus gr. bovalli, P. plallidimaculatus, P. planquetti, P. surinamensis, Pseudancistrus kwinti,... |
|
|
Ähnliche Themen | ||||
Thema | Autor | Forum | Antworten | Letzter Beitrag |
Taxonomic revision and phylogenetic relationships of Dasyloricaria Isbrücker & Nijssen, 1979, with description of a new species | Acanthicus | Erstbeschreibungen und Systematik | 0 | 13.04.2016 12:10 |
The genera Isorineloricaria and Aphanotorulus (Siluriformes: Loricariidae) with description of a new species | Acanthicus | Erstbeschreibungen und Systematik | 3 | 05.02.2016 23:48 |
Phylogenetic relationships of the species of Acestridium | Karsten S. | Erstbeschreibungen und Systematik | 0 | 04.06.2015 19:15 |
Intergeneric phylogenetic relationships in catfishes of the Loricariinae (Siluriformes: Loricariidae), with the description of Fonchiiloricaria nanodo | Norman | Erstbeschreibungen und Systematik | 1 | 14.09.2011 06:13 |
The genus Peckoltia with the description of two new species and a reanalysis of the phylogeny of the genera of the Hypostominae, Armbruster 2008 | Norman | Erstbeschreibungen und Systematik | 20 | 25.09.2008 18:19 |