Factors which influence sperm ability to fertilize.

Abstract

Different facrors influence animal sperm abiÌiry ro fertilizc- Some ofthem are revieu'ed here, spermmotiliry block to polyspermy, chemioattracrìon, sperm cornpetition lor fcrtilization. Old and new data are report-ed, as lor exanplc the new notions on sperm moriliry derived from sitc directed mutagenesis in rodents, the newnotions on thc odour receptors in m:rrnmalian sperm attr-action and ncw notions on sperm competìtion, which isvariable in diflerent species