title: Cryopreservation of sperm of two European percid species, the pikeperch (Sander lucioperca) and the Volga pikeperch (S. volgensis).
abstract: Experiments were carried out on sperm cryopreservation of two European percid fish species, the pikeperch (Sander lucioperca) and the Volga pikeperch (S. volgensis). Two experiments were conducted on pikeperch sperm. In the first, the effects of three extenders (Glucose, KCl, Sucrose) and two cryoprotectants (dimethyl-sulfoxide: DMSO, methanol: MeOH) were tested on motility and fertilization. In the second, the effects of two dilution ratios (1 : 1, 1: 9) and two cryoprotectants (DMSO, MeOH) on hatching were investigated. In the experiment on Volga pikeperch the suitability of using cryopreservation for fertilization was investigated. In the first experiment on pikeperch the highest post-thaw motility (28 +/- 21%) and fertilization rate (43 +/- 12%) was found with DMSO as cryoprotectant in combination with Glucose extender. In the second, the highest hatch rate (41 +/- 22%) was observed with MeOH as cryoprotectant and 1 : 1 sperm dilution ratio, however no significant difference was found among the results. In the experiment on Volga pikeperch hatch rates with cryopreserved sperm (60 +/- 2%) did not significantly differ from the control (60 +/- 6%). Contamination of sperm with urine seems to be a key problem in the success of sperm cryopreservation of these species.
authors.affiliation: Department of Fish Culture, Szent István University, Páter Károly u. 1, H-2103 Gödöllo, Hungary.
authors.forename: Z
authors.initials: Z
authors.lastname: Bokor
authors.forename: T
authors.initials: T
authors.lastname: Müller
authors.forename: M
authors.initials: M
authors.lastname: Bercsényi
authors.forename: L
authors.initials: L
authors.lastname: Horváth
authors.forename: B
authors.initials: B
authors.lastname: Urbányi
authors.forename: A
authors.initials: A
authors.lastname: Horváth
mesh_terms: D000818:Animals; D015925:Cryopreservation / Q000379:methods* / Q000662:veterinary; D003451:Cryoprotective Agents / Q000494:pharmacology*; D004121:Dimethyl Sulfoxide / Q000494:pharmacology; D005947:Glucose / Q000494:pharmacology; D008297:Male; D000432:Methanol / Q000494:pharmacology; D010471:Perches / Q000502:physiology*; D011189:Potassium Chloride / Q000494:pharmacology; D012662:Semen Preservation / Q000379:methods / Q000662:veterinary*; D013081:Sperm Motility / Q000187:drug effects; D013395:Sucrose / Q000494:pharmacology
chemical_list: D003451:Cryoprotective Agents; D013395:Sucrose; D011189:Potassium Chloride; D005947:Glucose; D000432:Methanol; D004121:Dimethyl Sulfoxide