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Structure and Vascularization of the Ventricular Myocardium of Piaractus mesopotamicus and Clarias gariepinus (Teleostei)
Author(s) -
Simoes K.,
Vicentini C. A.,
Da Cruz C.,
Benetti E. J.
Publication year - 1999
Publication title -
anatomia, histologia, embryologia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.34
H-Index - 35
eISSN - 1439-0264
pISSN - 0340-2096
DOI - 10.1046/j.1439-0264.1999.00198.x
Subject(s) - piaractus mesopotamicus , clarias gariepinus , biology , teleostei , fishery , anatomy , fish <actinopterygii> , catfish
The structural characteristics of the ventricular myocardium and the arterial distribution of the ventricular wall were studied in two freshwater teleost fish species ( Piaractus mesopotamicus and Clarias gariepinus ). The ventricular myocardium consists of two distinct layers, an external compact layer and an internal spongy layer. In Piaractus mesopotamicus the compact layer contains fibres with an external longitudinal arrangement and an internal circular arrangement. The arterial vascularization of the compact layer is provided by subepicardial vessels and their ramifications in both species.