Quantification of fertilization-induced gamete changes and sperm entry without egg activation in a teleost egg
[摘要] Acytologicalstudyoffertilizationintheteleost,Catostomuscommersoni,wascarriedoutinordertoquantifygametechangesinducedbyspermentryandnormaleggactivation.MaternalmetaphaseIIspindlelengthchanges,blastodiscdiameterchanges,andspermmetamorphosiswerequantifiedandfoundtobeassociatedwithnormalfertilization.Atthebeginningofspermtransformationtoapronucleus,anooplasmicspecializationwasfoundattheeggcortexjustabovethefertilizingspermcell.Thegametechangesmentionedabovedidnotoccurunderwater-deprivedconditionswhichallowedspermentrybutnoteggactivationorsperm-pronucleustransformation.Theseresultsindicatethateggactivationisnecessaryfornormalsperm-pronucleusmetamorphosis.
[发布日期] [发布机构]
[效力级别] [学科分类] 生物科学（综合）
[关键词] [时效性]
