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Osteology and myology of the cephalic region and pectoral girdle of Plotosus lineatus , with comments on Plotosidae (Teleostei: Siluriformes) autapomorphies
Author(s) -
Oliveria C.,
Diogo R.,
Vandewalle P.,
Chardon M.
Publication year - 2001
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.2001.tb00128.x
Subject(s) - pectoral girdle , neurocranium , myology , biology , anatomy , autapomorphy , vomer , osteology , teleostei , fish <actinopterygii> , skull , biochemistry , fishery , gene , phylogenetic tree
From comparisons of the cephalic and pectoral girdle structures of Plotosus lineatus with those of other plotosid as well as non‐plotosid siluriforms, plotosid catfishes can be defined by at least six autapomorphies. These are: (1) the absence of the ventral division of the muscle arrector dorsalis; (2) the double articulation between the neurocranium and the anterior part of the suspensorium; (3) the greatly enlarged utricular otolith, which profoundly inflates the ventral surfaces of both the prootic and the pterotic; (4) the attachment of the muscle extensor tentaculi on the neurocranium lies further anteriorly than its insertion on the autopalatine; (5) the coronoid process of the mandible is linked to the maxillary by means of two thick, long ligaments; (6) the enlarged base of the maxillary barbel.