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The spermatic ducts of salmonid fishes (Salmonidae, Teleostei). Morphology, histochemistry and composition of the secretion
Author(s) -
Lahnsteiner F.,
Patzner R. A.,
Welsmann T.
Publication year - 1993
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.1095-8649.1993.tb00307.x
Subject(s) - biology , salvelinus , salmonidae , rainbow trout , teleostei , zoology , coregonus , trout , fishery , fish <actinopterygii>
Using light and electron microscopy, enzyme‐histochemistry thin‐layer chromatrography and photometry the functions of the spermatic ducts in salmonid fishes (rainbow trout, Oncorhynchus mykiss , Arctic charr, Salvelinus alpinus ; grayling, Thymallus thymallus ; whitefish, Coregonus sp.) were investigated. During spawning the spermatic duct of the Salmonidae has a high secretory activity: it synthesizes steroids, lipids (triglycerides, fatty acids, cholesterol esters, phosphatidylcholine), monosaccharides (glucose, fructose), proteins and enzymes (acid and alkaline phosphatase, glucuronidase and proteases). It is important for storage and resorption of spermatozoa. Interspecific differences exist in the storage capacity for semen.