Morphological diversity of the excretory duct system of teleostean fishes

Abstract

BY MEANS OF AN ANATOMICAL ANALYSIS FROM 70 SPECIES OF TELEOSTEAN FISHES, BELONGING TO 62 GENERA, AND 39 ABSTRACT. BY MEANS OF AN ANATOMICAL ANALYSIS FROM 70 SPECIES OF TELEOSTEAN FISHES, BELONGING TO 62 GENERA, AND 39ICAL TELEOSTEAN PATTERN IS DEFINED AS THE FUSION OF BOTH ARCHINEPHRIC DUCTS IN THE COMMON URINAY DUCT, AND THE FUSION IN MAL OF THE COMMON URINARY DUCT WITH THE COMMON SPERMATIC DUCT IN THE UROGENITAL DUCT. A RELATION BETWEEN THE LENGTH OF THE KIDNEY AND OF THE ARCHINEPHRIC DUCTS IS RECONGNIZED. THE TRAJECTORY OF THE URINARY DUCTS IS DESCRIBED, WITH THE ”REVERS OF THE ORIENTATION OF THE URINARY AND UROGENITAL DUCTS IN PLEURONECTIFORMES BEING NOTEWORTHY. THE ORIGIN OF THE URINARY BLADDER FROM THE COMMON URINARY DUCT IS SUGGESTED.