Summary
The annual changes of the spermatic duct ofSalaria pavo and the characteristics of the spermatic ducts of spawningAidablennius sphynx, Lipophrys adriaticus, L. dalmatinus, andParablennius incognitus are described by fine structural and histochemical methods. The spermatic duct ofS. pavo has an inactive phase during the interspawning period, a proliferation phase during the prespawning period, a phase of high secretory activity during the spawning period and a regression phase in the postspawning period. During spawning the spermatic duct ofS. pavo is involved in the secretion of glycogen, lipids, and sulfomucins and has similar fine structural and histochemical characteristics as the spermatic ducts ofA. sphynx, L. adriaticus, L. dalmatinus, andP. incognitus. The spermatic ducts of bleniid fish function (1) in stabilizing and continuation of the final differentiation processes of spermatozoa, (2) in storage of mature spermatozoa, (3) in nutrition of germ cells by glycogen, and (4) in the production of sulfomucins regarded as important for the mode of fertilization. Possible meanings of the varying size of the spermatic ducts in different species of blennies are discussed.
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Lahnsteiner, F., Patzner, R.A. The spermatic duct of blenniid fish (Teleostei, Blenniidae): Fine structure, histochemistry and function. Zoomorphology 110, 63–73 (1990). https://doi.org/10.1007/BF01632813
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DOI: https://doi.org/10.1007/BF01632813