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Sperm morphometric in males of the paper wasp Polistes simillimus
(Alma Mater Studiorum, Univ Bologna, 2018-06-01)
Intraspecific variation in sperm morphometric is widespread across animal taxa and it might be related to different aspects of sexual selection. Within social insects, it has only been documented for some bee and ant ...
Comparison of apoptotic cells between cryopreserved ejaculated sperm and epididymal sperm in stallions
(2012)
The development of a reliable technique to freeze epididymal semen would provide a unique opportunity to preserve valuable genetic material from unexpectedly lost stallions. The aim of this study was to compare the apoptotic ...
Chemotactic selection of frozen-thawed stallion sperm improves sperm quality and heterologous binding to oocytes
(Elsevier Science, 2020-10)
The successful use of assisted reproduction techniques (ART) depends in part on the sperm physiological status. Several sperm selection procedures have been applied to improve quality of sperm population when using the ...
Effects of the cryopreservation process on dog sperm integrity
(Brazilian Coll Animal Reproduction, 2020-01-01)
Sperm cryopreservation has become an indispensable tool in reproductive biology. However, frozen/thawed semen has a short lifespan due to loss of sperm cell integrity. To better understand which sperm cell structures are ...
Heterologous Oviductal Cells Binding Capacity of Cryopreserved Equine Ejaculated and Epididymal Spermatozoa
(2017-12-01)
This study investigated the binding capacity of equine spermatozoa (both ejaculated and from different epididymal regions) to the oviductal epithelial cells (OECs) culture, before and after cryopreservation, using an oviduct ...
Tritrichomonas fetus extracellular products decrease progressive motility of bull sperm
(Elsevier B.V., 2010-01-01)
Tritrichomonas fetus causes infertility and abortion in cattle; however, there is scarce information regarding the susceptibility of bovine sperm to this parasite. The objective of this study was to analyze in vitro the ...
Laboratory evaluation of sperm-ovum interaction
(Elsevier Inc, 2018)
The article will briefly address background information on relevant events involved in sperm–ovum interaction leading to fertilization. Reference to published work and laboratory protocols will be presented for the following ...
Sperm sexing mediated by magnetic nanoparticles in donkeys, a preliminary in vitro study
(Elsevier Science Inc, 2018-06)
Preselection of sex before conception has been one of the objectives pursued by scientists and breeders for many years. The donkey milk industry has shown a greater commercial interest, since jennies’ demand is increasing ...
Gold-standard for computer-assisted morphological sperm analysis
(Elsevier, 2017)
Background and Objective: Published algorithms for classification of human sperm heads are based on relatively small image databases that are not open to the public, and thus no direct comparison is available for competing ...
Tales of the Tail and Sperm Head Aches : Changing concepts on the prognostic significance of sperm pathologies affecting the head, neck and tail
(Shanghai Institute of Materia Medica, 2012-01)
This article presents an update on the variable prognostic significance of different sperm pathologies in patients with severe male factor infertility due to morphology and motility disorders. Severe asthenozoospermia is ...