title: Seasonal variations in the fertilizing capacity of Bufo arenarum (Amphibia Anura) spermatozoa.
mesh_terms: D000818:Animals; D002022:Bufo arenarum / Q000502:physiology*; D002474:Cell-Free System; D005260:Female; D005306:Fertilization; D008297:Male; D010063:Ovum / Q000502:physiology; D012621:Seasons; D013094:Spermatozoa / Q000378:metabolism / Q000502:physiology*; D013737:Testis / Q000378:metabolism