Genetic sperm defects.
Genetic sperm defects are specific sperm defects, which have been shown to have a genetic mode of transmission. Such genetic linkage, either direct or indirect, has been associated with a number of sperm defects in different species, with this number increasing with improved diagnostic capabilities. A number of sperm defects, which have proven or suspected genetic modes of transmission are discussed herein, with particular emphasis on cattle. These include: 1. Acrosome defects (knobbed, ruffled and incomplete); 2. Head defects (abnormal condensation, decapitated, round head, rolled head, nuclear crest); 3. Midpiece abnormalities ("Dag" defect, "corkscrew" defect, "pseudo-droplet" defect); 4. Tail defects ("tail stump" defect, primary ciliary dyskinesia).
Chenoweth
Peter J
PJ
School of Agricultural and Veterinary Sciences, Charles Sturt University, Wagga Wagga, NSW 2678, Australia. pchenoweth@csu.edu.au
D000177:Acrosome / Q000648:ultrastructure; D000818:Animals; D002417:Cattle; D002418:Cattle Diseases; D004777:Environment; D030342:Genetic Diseases, Inborn / Q000662:veterinary*; D007248:Infertility, Male / Q000209:etiology / Q000235:genetics / Q000662:veterinary*; D008297:Male; D013077:Sperm Head / Q000648:ultrastructure; D013082:Sperm Tail / Q000648:ultrastructure; D013094:Spermatozoa / Q000002:abnormalities*