Sperm storage and duration of fertility in female ostriches (<i>Struthio camelus</i>)
نویسندگان
چکیده
منابع مشابه
Severe Fertility Effects of sheepish Sperm Caused by Failure To Enter Female Sperm Storage Organs in Drosophila melanogaster
In Drosophila, mature sperm are transferred from males to females during copulation, stored in the sperm storage organs of females, and then utilized for fertilization. Here, we report a gene named sheepish (shps) of Drosophila melanogaster that is essential for sperm storage in females. shps mutant males, although producing morphologically normal and motile sperm that are effectively transferr...
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Most of the 620+ species of salamanders are relatively small animals, rarely exceeding 200 mm total length, but members of the families Cryptobranchidae (1800 mm), Sirenidae (978 mm), Amphiumidae (1162 mm), Proteidae (486 mm) and Dicamptodontidae (351 mm) can truly be considered "giant salamanders." These families have few species (Proteidae with six species is the most speciose) and are aquati...
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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 ...
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1 Department of Biology, Southeast Missouri State University, Cape Girardeau, MO 63701, USA. 2 CNRS-UMR5175 CEFE, Centre d’Ecologie Functionnelle et Evolutive, 1919 route de mende, 34293 Montpellier cedex 5. 3 College of Sciences, The University of Findlay, Findlay, Ohio 45840, USA. 4 Department of Biological Sciences, Southeastern Louisiana University, Hammond, LA 70402, USA. * Corresponding a...
متن کاملPrecious Essences: Female Secretions Promote Sperm Storage in Drosophila
Sperm that females receive during mating are stored in special places in the females' reproductive tracts. These storage sites serve to support and retain the sperm, maintaining the sperms' motility and, in mammals, permitting final sperm-maturation. The molecules that attract sperm to these sites and mediate what happens to them there have remained elusive. New research, using elegant genetic ...
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ژورنال
عنوان ژورنال: South African Journal of Animal Science
سال: 2005
ISSN: 2221-4062,0375-1589
DOI: 10.4314/sajas.v34i3.3959