title: Preliminary observations on the induction of triploidy in Abramis brama by cold shock.
abstract: Cold shock (2 degrees C) lasting for 45 or 60 min was applied to eggs from bream (Abramis brama), beginning at 2, 3, 4, 5, 6, 7 and 8 min after fertilization. The lowest survival rate was observed in those groups treated in which a cold shock started at 4 or 5 min after fertilization. Groups exposed to cold shock lasting for 60 min showed a higher percentage of triploids than in groups shocked for 45 min. The highest yield of triploid embryos was produced by the cold shock which started 8 min after egg fertilization and which lasted for 45 min.
authors.affiliation: Department of Fisheries, Olsztyn University of Agriculture and Technology, Olsztyn-Kortowo, Poland.
authors.forename: D
authors.initials: D
authors.lastname: Kucharczyk
authors.forename: M J
authors.initials: MJ
authors.lastname: Luczynski
authors.forename: M
authors.initials: M
authors.lastname: Jankun
authors.forename: M
authors.initials: M
authors.lastname: Luczynski
mesh_terms: D000818:Animals; D017756:Aquaculture; D002470:Cell Survival / Q000502:physiology; D003080:Cold Temperature; D005260:Female; D010063:Ovum / Q000166:cytology* / Q000502:physiology; D010473:Perciformes / Q000235:genetics*; D011003:Ploidies; D013312:Stress, Physiological / Q000503:physiopathology*