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The histology of the excretory kidney of the paddlefish, Polyodon spathula
Author(s) -
Georgi T. A.,
Beedle Dennis
Publication year - 1978
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.1095-8649.1978.tb03471.x
Subject(s) - excretory system , biology , glomerulus , stain , kidney , reabsorption , anatomy , zoology , histology , fish <actinopterygii> , medicine , endocrinology , fishery , staining , genetics
Kidney tissue from the freshwater chondrostean fish, Polyodon spathula , was examined by light microscopy. P. spathula has a glomerular excretory kidney. The tubule leading from the glomerulus, based on a variety of stain reactions, is composed of two major cell types. Also based on stain reactions, it appears that ion reabsorption, hence conservation, occurs in distal portions of the tubules. Also observed were stain reactions of arteriole walls, similar to renin producing cells in other vertebrates.