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Serine proteinase inhibitors in the seminal plasma of percid fish

Serine proteinase inhibitors in the seminal plasma of percid fish Summary In this study trypsin‐inhibitory activity of the seminal plasma of percid fish: perch (Perca fluviatilis, n = 22), pikeperch (Sander lucioperca, n = 5), Volga pikeperch (Sander volgensis, n = 7) and hybrid between S. lucioperca (♀) and S. volgensis (♂) (n = 11) was identified and measured. Comparison of profiles of anti‐trypsin activity (APA) in blood and seminal plasma of perch and hybrid was also performed. Profiles of serine proteinase inhibitors were quite unique in the seminal plasma of percid fish. Instead of 1–3 inhibitors (typical pattern of APA in teleost fish), at least five bands of serine proteinase inhibitors with different migration rates were detected. Proteinase inhibitors profiles and other parameters of the hybrid semen were close to values of the pikeperch (maternal species). Perch and hybrid seminal plasma proteinase inhibitors migrated during electrophoresis similarly to blood plasma proteinase inhibitors. A significant correlation between seminal protein concentration and APA was confirmed for percid fish (r2 = 0.78, P < 0.001 and r2 = 0.93, P < 0.01, for perch and Volga pikeperch, respectively). Further studies are necessary to elucidate molecular basis of APA heterogeneity in percid fish in order to identify families of these inhibitors and to understand their possible physiological roles. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Applied Ichthyology Wiley

Serine proteinase inhibitors in the seminal plasma of percid fish

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References (14)

Publisher
Wiley
Copyright
© 2010 Blackwell Verlag, Berlin
ISSN
0175-8659
eISSN
1439-0426
DOI
10.1111/j.1439-0426.2010.01535.x
Publisher site
See Article on Publisher Site

Abstract

Summary In this study trypsin‐inhibitory activity of the seminal plasma of percid fish: perch (Perca fluviatilis, n = 22), pikeperch (Sander lucioperca, n = 5), Volga pikeperch (Sander volgensis, n = 7) and hybrid between S. lucioperca (♀) and S. volgensis (♂) (n = 11) was identified and measured. Comparison of profiles of anti‐trypsin activity (APA) in blood and seminal plasma of perch and hybrid was also performed. Profiles of serine proteinase inhibitors were quite unique in the seminal plasma of percid fish. Instead of 1–3 inhibitors (typical pattern of APA in teleost fish), at least five bands of serine proteinase inhibitors with different migration rates were detected. Proteinase inhibitors profiles and other parameters of the hybrid semen were close to values of the pikeperch (maternal species). Perch and hybrid seminal plasma proteinase inhibitors migrated during electrophoresis similarly to blood plasma proteinase inhibitors. A significant correlation between seminal protein concentration and APA was confirmed for percid fish (r2 = 0.78, P < 0.001 and r2 = 0.93, P < 0.01, for perch and Volga pikeperch, respectively). Further studies are necessary to elucidate molecular basis of APA heterogeneity in percid fish in order to identify families of these inhibitors and to understand their possible physiological roles.

Journal

Journal of Applied Ichthyology – Wiley

Published: Oct 1, 2010

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