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Composition of seminal plasma and ovarian fluid in Ide Leuciscus idus and Northern pike Esox lucius
Authors:MAM Siddique  O Linhart  R Kujawa  S Krejszeff  IAE Butts
Institution:1. Faculty of Fisheries and Protection of Waters, University of South Bohemia in Ceske Budejovice, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, Vodňany, Czech Republic;2. Department of Lake and River Fisheries, Warmia and Mazury University, Olsztyn, Poland;3. DTU Aqua‐National Institute of Aquatic Resources, Section for Marine Ecology and Oceanography, Technical University of Denmark, Charlottenlund, Denmark
Abstract:Seminal plasma (SP) and ovarian fluid (OF) plays an important role as storage media to prevent the activation of gametes both in vivo and under artificial conditions. The objectives of this study were to quantify gamete biochemistry and explore correlations among quantitative characteristics of SP, OF and sperm performance traits of Ide Leuciscus idus and Northern pike Esox lucius. Generally, Na+, K+ and Cl? were found to be the most dominating ions, although concentrations of K+ were higher in SP, while Na+ and Cl? concentrations were higher in OF for both species. Several significant correlations among the biochemical properties such as total protein, glucose, osmolality, cholesterol, K+, Ca2+, Cl? and Mg2+ were observed for SP and OF. Total protein content of Ide SP was positively correlated with sperm activity traits (r ≥ .89, p ≤ .05), while K+ concentration was negatively correlated with sperm traits (r ≥ ?.89, p ≤ .05). Moreover, Ca2+ concentration in Northern pike SP was positively correlated with the percentage of sperm motility (r = . 98, p < .01). In conclusion, these results can be used to better understand the biochemistry of SP and OF, improve methods for short‐ and long‐term storage of gametes and standardize fertilization protocols.
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