![]() |
|
Registrieren | Hilfe | Mitgliederliste | Mitgliederkarte | Kalender | Suchen | Heutige Beiträge | Alle Foren als gelesen markieren |
![]() |
|
Themen-Optionen | Ansicht |
![]() |
#1 |
Welsfan
Registriert seit: 20.12.2004
Ort: 99427 Weimar
Beiträge: 3.673
|
Re-validation of Otocinclus arnoldi Regan and reappraisal of Otocinclus phylogeny (Siluriformes: Loricariidae)
Pablo Lehmann A., Fernanda Mayer and Roberto E. Reis
Abstract Otocinclus arnoldi from the La Plata basin is resurrected from the synonymy of O. flexilis described from the rio JacuÃ* drainage, based on three distinguishing features: the possession of five branched pectoral-fin rays, the larger number of enlarged odontodes on the tip of the parieto-supraoccipital posterior process, and having the prootic involved in the contact with the hyomandibular articular condyle. These species are also compared to O. mimulus, a third species described from the Paraná River basin, and the three species are rediagnosed. A reassessment of the phylogenetic relationships of all species of Otocinclus shows a well-supported clade composed of (O. xakriaba ((O. mimulus, O. arnoldi) (O. affinis, O. flexilis))) from the eastern-draining river basins of the Brazilian Shield as sister-group to a clade including all remaining Otocinclus species which are distributed on a wide lowland area of the Amazonas, Paraguay, and Orinoco basins. Quelle: Neotropical Ichthyology, 8(1):57-68, 2010Viele Grüße Elko Geändert von L-ko (31.03.2010 um 07:07 Uhr). |
![]() |
![]() |
![]() |
Themen-Optionen | |
Ansicht | |
|
|
![]() |
||||
Thema | Autor | Forum | Antworten | Letzter Beitrag |
Chromosome polymorphism in Ancistrus cuiabae Knaack, 1999, (Siluriformes: Loricariidae: Ancistrini) | L-ko | Sonstige Arbeiten und Berichte | 0 | 18.12.2009 21:08 |
Systematics of Lamontichthys Miranda-Ribeiro (Siluriformes: Loricariidae), with the description of two new species | L-ko | Erstbeschreibungen und Systematik | 0 | 18.12.2009 21:04 |
Sturisoma kneri, New Species, a Name for an Old Yet Poorly-Known Catfish (Siluriformes: Loricariidae) | L-ko | Erstbeschreibungen und Systematik | 0 | 26.02.2009 19:24 |
Two new species of Rineloricaria (Siluriformes: Loricariidae) from the rio Iguaçu basin, southern Brazil | L-ko | Erstbeschreibungen und Systematik | 1 | 30.09.2008 20:57 |
Zebra Otocinclus beschrieben - Otocinclus cocama | Walter | Loricariidae | 10 | 07.01.2005 22:44 |