Abstract
We report the presence of an aglomerular kidney in the pelagic deep-sea fish Saccopharynxampullaceus (Saccopharyngiformes: Saccopharyngidae). The thin kidney is unpaired and ribbon-like rostrally, while it is thicker caudally with a rod-like shape. Light microscopic observation of serial sections revealed no glomeruli at all. The kidney is composed of renal tubules, sinusoids and capillaries of the renal portal system and extensive interstitial lymphoid tissues. Each renal tubule is surrounded by well-developed renal portal sinusoids, and the tubules are well separated from each other. There is a large space dorsal to the vertebrae, similar to the situation in the closely related Eurypharynx pelecanoides. We consider that S. ampullaceus possesses an aglomerular kidney to gain neutral buoyancy. The urinary bladder of S. ampullaceus is a distinct vesicular structure, unlike that of E. pelecanoides.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
