title: Studies on the accessory reproductive organs in the drake.
abstract: The effects of the fluid from the ejaculatory groove region (EGR-fluid) on the survival and fertilizing ability of spermatozoa of the drake were examined. Semen was collected from the ductus deferens and divided into three parts; one remained undiluted (control 1) and other two were diluted with EGR-fluid and phosphate buffer (control 2) respectively. The survival of spermatozoa stored in the EGR-fluid was similar to that of controls but many spermatozoa were deformed during storage, the rate of which reached 57% in the samples stored for 24 hours. The fertilizing ability of the fresh (unstored) spermatozoa was not adversely affected by the addition of EGR-fluid but a rather favourable effect of the fluid was recognized. In contrast, when the spermatozoa were stored in vitro, the EGR-fluid exerted an adverse effect on the fertilizing ability of spermatozoa.
mesh_terms: D000818:Animals; D004372:Ducks / Q000502:physiology*; D004542:Ejaculation; D005298:Fertility; D005837:Genitalia, Male / Q000378:metabolism*; D008297:Male; D013081:Sperm Motility; D013094:Spermatozoa / Q000166:cytology