Osteology and myology of the cephalic region and pectoral girdle of Schilbe mystus and comparison with other schilbids, with comments on the monophyly and phylogenetic relationships of the Schilbidae (Teleostei: Siluriformes)

2004 ◽  
Vol 54 (1) ◽  
pp. 91-110 ◽  
Author(s):  
Pierre Vandewalle ◽  
Michel Chardon ◽  
Rui Diogo
Keyword(s):  
Phylogenetic Relationships ◽  
Posterior Margin ◽  
Lateral View ◽  
Cephalic Region ◽  
Coronoid Process ◽  
Monophyletic Group ◽  
Pectoral Girdle ◽  
The Family ◽  
Close Relationship ◽  
Horizontal Portion

AbstractThe cephalic and pectoral girdle structures of Schilbe mystus are described and compared with those of other schilbids, as well as several other non-schilbid catfishes, as the foundation for a discussion on the monophyly and the phylogenetic relationships of the Schilbidae. Our observations and comparisons suggest that the family Schilbidae is a monophyletic group, defined, at least, by three autapomorphies, namely: 1) the adductor mandibulae A2 is lateral to the A1-Ost; 2) the posterior margin of the horizontal portion of Meckel's cartilage is situated further beyond the coronoid process; 3) the adductor mandibulae Aω is visible in a lateral view of the cephalic region. With respect to the phylogenetic relationships of the Schilbidae, our observations and comparisons support a close relationship between this family and the Pangasiidae.

On the osteology and myology of the cephalic region and pectoral girdle of Heteropneustes fossilis (Siluriformes: Heteropneustidae), with comments on the phylogenetic relationships between Heteropneustes and the clariid catfishes

2003 ◽  
Vol 53 (4) ◽  
pp. 379-396 ◽  
Author(s):  
Rui Diogo ◽  
Pierre Vandewalle ◽  
Michel Chardon
Keyword(s):  
Phylogenetic Relationships ◽  
Cephalic Region ◽  
Pectoral Girdle ◽  
Heteropneustes Fossilis ◽  
Monophyletic Clade ◽  
The Family ◽  
Close Relationship

AbstractThe osteological and myological structures of the cephalic region and pectoral girdle of the Asiatic catfish Heteropneustes fossilis are described and compared with those of several other catfishes, as the foundation for an analysis on the phylogenetic relationships of the genus Heteropneustes. Our observation and comparisons support a close relationship between Heteropneustes and the clariid catfishes. More specifically, the present study supports De Pinna's 1993 study, according to which Horaglanis and Uegitglanis, two genera commonly included in the family Clariidae, are the successive sister-groups of a monophyletic clade composed by the genus Heteropneustes and the remaining clariid genera.

Osteology and myology of the cephalic region and pectoral girdle of Batrochoglanis raninus, with a discussion on the synapomorphies and phylogenetic relationships of the Pseudopimelodinae and Pimelodidae (Teleostei: Siluriformes)

2004 ◽  
Vol 54 (3) ◽  
pp. 261-280 ◽  
Author(s):  
Pierre Vandewalle ◽  
Rui Diogo ◽  
Michel Chardon
Keyword(s):  
Phylogenetic Relationships ◽  
Cephalic Region ◽  
Pectoral Girdle ◽  
The Family

AbstractThe cephalic and pectoral girdle structures of the pseudopimelodin Batrochoglanis raninus are described and compared to those of a representative of another pseudopimelodin genera, namely Microglanis cottoides, as well as to several other pimelodid and non-pimelodid catfishes, as the foundation for a discussion on the synapomorphies and phylogenetic relationships of the Pseudopimelodinae. Our observations and comparisons pointed out two new, additional features that could represent potential Pseudopimelodinae synapomorphies: 1) mesethmoid markedly bifurcated anteriorly; 2) spoon-shaped autopalatine with a somewhat roundish, markedly enlarged dorsoventrally, posterior tip. In addition, our observations and comparisons indicate that the subfamilies Pseudopimelodinae, Pimelodinae and Heptapterinae do constitute a monophyletic assemblage, and, thus, contradict the commonly accepted idea that the family Pimelodidae is a polyphyletic group.

Osteology and myology of the cephalic region and pectoral girdle of the South African catfish Austroglanis gilli, with comments on the autapomorphies and phylogenetic relationships of the Austroglanididae (Teleostei: Siluriformes)

2006 ◽  
Vol 56 (1) ◽  
pp. 39-62 ◽  
Author(s):  
Rui Diogo ◽  
Roger Bills
Keyword(s):  
South African ◽  
Phylogenetic Relationships ◽  
Cephalic Region ◽  
The Other ◽  
Phylogenetic Position ◽  
African Catfish ◽  
Pectoral Girdle ◽  
Sesamoid Bone ◽  
The South ◽  
Close Relationship

AbstractThe cephalic and pectoral girdle structures of the South African catfish Austroglanis gilli are described and compared with those of other catfishes, either studied by us or described in the literature, as the foundation for a discussion on Austroglanididae autapomorphies, and also on the phylogenetic relationships between the austroglanidids and the other catfishes. Our observations, comparisons, and bibliographical overview revealed only two Austroglanidae autapomorphies, namely: 1) the peculiarly shaped, posteriorly bifurcated sesamoid bone 1 of the suspensorium; and 2) the markedly broad fourth basibranchial. Another feature, the marked lateral bifurcation of the anterodorsolateral laminar projection of the sphenotic bone, may eventually constitute an additional austroglanidid autapomorphy, but, perhaps more reasonably, be a synapomorphic feature to support a close relationship between A. gilli and A. barnardi. With respect to the phylogenetic position of the Austroglanididae within the Siluriformes, these fishes seem to be closely related to the ictalurid and the cranoglanidid, and particularly to the ariid and the claroteid catfishes.

On the osteology and myology of the cephalic region and pectoral girdle of Chaca bankanensis Bleeker 1852, with comments on the autapomorphies and phylogenetic relationships of the Chacidae (Teleostei: Siluriformes)

2004 ◽  
Vol 54 (2) ◽  
pp. 159-174 ◽  
Author(s):  
Rui Diogo ◽  
Pierre Vandewalle ◽  
Michel Chardon
Keyword(s):  
Phylogenetic Relationships ◽  
Cephalic Region ◽  
Pectoral Girdle ◽  
Posterior Surface ◽  
Close Relationship ◽  
Dorsal Process

AbstractThe cephalic and pectoral girdle structures of Chaca bankanensis are described and compared to those of other catfishes, as the foundation for a discussion on the autapomorphies and phylogenetic relationships of the Chacidae. Our observations and comparisons pointed out six new chacid autapomorphies, namely: (1) absence of abductor superficialis; (2) ethmoid cartilage with long, thin, anterolateral projections situated ventrally to the anterolateral arms of mesethmoid; (3) interopercular with well-developed, deep concavity to articulate with posterior surface of preopercular; (4) dorsal process 2 of the cleithrum highly developed and markedly extended posteriorly. In addition, our observations and comparisons support a close relationship between the chacids, the plotosids and the clariids.

Phylogenetic relationships of the African genera Alestes and Brycinus (Teleostei, Characiformes, Alestidae)

2002 ◽  
Vol 80 (11) ◽  
pp. 1887-1899 ◽  
Author(s):  
Alison M Murray ◽  
Kathlyn M Stewart
Keyword(s):  
Phylogenetic Relationships ◽  
Cladistic Analysis ◽  
Sister Group ◽  
Monophyletic Group ◽  
The Family ◽  
The Subject

The family Alestidae (also referred to as the African Characidae) comprises the African dwarf forms ("Petersiini") and the genera Alestes, Brycinus, Bryconaethiops, and Hydrocynus. Although several authors have presented characters to support the monophyly of the family, a cladistic analysis of the group has not been published. Furthermore, the interrelationships of the constituent groups are the subject of some controversy. A cladistic analysis of the Alestidae is presented, including characters to support the monophyly of the family. The results of this study indicate that several species should be removed from the genus Brycinus, that Hydrocynus is the sister group of Alestes s.str. (containing only five species), and that the dwarf alestids ("Petersiini") do not form a monophyletic group.

Osteology and myology of the cephalic region and pectoral girdle of Centromochlus heckelii, comparison with other auchenipterids, and comments on the synapomorphies and phylogenetic relationships of the Auchenipteridae (Teleostei: Siluriformes)

2003 ◽  
Vol 53 (4) ◽  
pp. 397-416 ◽  
Author(s):  
Michel Chardon ◽  
Pierre Vandewalle ◽  
Rui Diogo
Keyword(s):  
Phylogenetic Relationships ◽  
Cephalic Region ◽  
The Other ◽  
Phylogenetic Position ◽  
Pectoral Girdle

AbstractThe cephalic and pectoral girdle structures of the auchenipterid Centromochlus heckelii (Centromochlinae) are described and compared with those of two representatives, Auchenipterus dentatus and Ageneiosus vittatus (Auchenipterinae), of the other auchenipterid subfamily, as well as with several other catfishes, as the foundation for a discussion on the synapomorphies and phylogenetic position of the Auchenipteridae. Our observations and comparisons support the idea that the Auchenipteridae and the Doradidae are sister-groups, and also that the clade formed by these two Neotropical families is closely related to the African mochokids. In addition, our observations and comparisons identified a potentially new auchenipterid synapomorphy, maxillary markedly elongated proximo-distally.

On the osteology and myology of the cephalic region and pectoral girdle of Franciscodoras marmoratus (Lütken 1874), comparison with other doradids, and comments on the synapomorphies and phylogenetic relationships of the Doradidae (Teleostei: Siluriformes)

2004 ◽  
Vol 54 (2) ◽  
pp. 175-193 ◽  
Author(s):  
Pierre Vandewalle ◽  
Michel Chardon ◽  
Rui Diogo
Keyword(s):  
Phylogenetic Relationships ◽  
Cephalic Region ◽  
The Other ◽  
Pectoral Girdle

AbstractThe cephalic and pectoral girdle structures of Franciscodoras marmoratus are described and compared to those of representatives of the three main doradid groups, namely Anadoras weddellii (Astrodoradinae), Acanthodoras cataphractus (Platydoradinae) and Doras punctatus (Doradinae), as well as members of the other siluriform families, as the foundation for a discussion on the phylogenetic relationships of the Doradidae. Our observations and comparisons support the idea that the Doradidae is closely related to the Auchenipteridae. In addition, our observations and comparisons pointed out a potentially new doradid synapomorphy, namely, the presence of a well-developed, deep, oval fossa between the dorsomedian surface of the pterotic and the dorsolateral surface of the parietosupraoccipital.

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