Coevolution of sperm and female reproductive tract morphology in stalk–eyed flies
نویسندگان
چکیده
منابع مشابه
Sperm transport in the female reproductive tract.
At coitus, human sperm are deposited into the anterior vagina, where, to avoid vaginal acid and immune responses, they quickly contact cervical mucus and enter the cervix. Cervical mucus filters out sperm with poor morphology and motility and as such only a minority of ejaculated sperm actually enter the cervix. In the uterus, muscular contractions may enhance passage of sperm through the uteri...
متن کاملComparative female reproductive tract development and morphology
A brief description of the basic pattern of mammalian organogenesis of the female reproductive tract is presented based on events as they occur in human beings. The emphasis is not on the details of this development, but rather its organization and timing. Tables of comparative development provide a comparison of similar events between man, rat, mouse, and chick.
متن کاملFemale reproductive tract form drives the evolution of complex sperm morphology.
The coevolution of female mate preferences and exaggerated male traits is a fundamental prediction of many sexual selection models, but has largely defied testing due to the challenges of quantifying the sensory and cognitive bases of female preferences. We overcome this difficulty by focusing on postcopulatory sexual selection, where readily quantifiable female reproductive tract structures ar...
متن کاملSperm Storage in the Female Reproductive Tract in Birds
The ability to store sperm in the female genital tract is frequently observed in vertebrates as well as in invertebrates. Because of the presence of a system that maintains the ejaculated sperm alive in the female reproductive tract in a variety of animals, this strategy appears to be advantageous for animal reproduction. Although the occurrence and physiological reasons for sperm storage have ...
متن کاملSperm morphology and reproductive success
fertilization potential, decisions on how to improve sperm morphology remain difficult to address. Smoking, alcohol consumption, caffeine intake and drug use can affect fertility; however, a conclusive connection between these factors and sperm morphology has not been demonstrated. Furthermore, use of dietary supplements and vitamins has not been shown to directly affect sperm morphology. While...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the Royal Society of London. Series B: Biological Sciences
سال: 1999
ISSN: 0962-8452,1471-2954
DOI: 10.1098/rspb.1999.0741