Results 41 to 50 of about 220,871 (359)
Factors affecting sperm quality before and after mating of calopterygid damselflies. [PDF]
PLoS ONE, 2010 Damselflies (Odonata: Zygoptera) have a more complex sperm transfer system than other internally ejaculating insects. Males translocate sperm from the internal reproductive organs to the specific sperm vesicles, a small cavity on the body surface, and ...
Kaori Tsuchiya, Fumio Hayashi
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Fatherhood and sperm DNA damage in testicular cancer patients [PDF]
, 2018 Testicular cancer (TC) is one of the most treatable of all malignancies and the management of the quality of life of these patients is increasingly important, especially with regard to their sexuality and fertility.
Lenzi, Andrea +3 more
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The Effect of X-Rays on Cytological Traits of Tuta absoluta (Lepidoptera: Gelechiidae) [PDF]
, 2016 The tomato leafminer, Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) is one of the most important pests of tomato. With the purpose of developing environmentally friendly control tactics such as the inherited sterility (IS) technique against this ...
Cagnotti, Cynthia Lorena +5 more
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Sperm mobility phenotype not determined by sperm quality index
Poultry Science, 2003 We tested the capacity of the AviMate sperm quality analyzer to predict sperm mobility phenotype. A preliminary experiment was performed to determine a sperm concentration that afforded maximal sperm quality index (SQI) values with sperm from males with high sperm mobility.
D P, Froman, E R, Bowling, J L, Wilsont
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Step by step optimization of a sperm cryopreservation protocol for spotted wolffish (Anarhichas minor Olafsen, 1772) [PDF]
, 2020 Spotted wolffish Anarhichas minor reproduction in captivity is dependent on in vitro fertilization. However, low sperm volume with relatively low cell concentration and the lack of gametes synchronization (simultaneous availability of mature eggs and ...
Beirão, J. +3 more
core +2 more sources
Outdoor air pollution and sperm quality [PDF]
Fertility and Sterility, 2016 Exposure to air pollution has been clearly associated with a range of adverse health effects, including reproductive toxicity, but its effects on male semen quality are still unclear. We performed a systematic review (up to June 2016) to assess the impact of air pollutants on sperm quality.
Rafael Lafuente +3 more
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Effects of temperature anomaly on sperm quality: A multi-center study of 33,234 men
HeliyonBackgrounds: Global fertility rates continue to decline and sperm quality is a prime factor affecting male fertility. Both extreme cold and heat have been demonstrated to be associated with decreased sperm quality, but no epidemiological studies have ...
Lina Xiao +15 more
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Effects of L-carnitine and L-acetyl-carnitine on testicular sperm motility and chromatin quality [PDF]
Iranian Journal of Reproductive Medicine, 2012 Background: Sperm cells extracted from testes (TESE) have poor chromatin quality and motility. Various substances are used in the laboratory to increase sperm motility and improve the ART outcomes; however, there are few research which considered ...
Elham Aliabadi +5 more
doaj
Postcopulary sexual selection increases ATP content in rodent spermatozoa [PDF]
, 2016 Sperm competition often leads to increase in sperm numbers and sperm quality, and its effects on sperm function are now beginning to emerge. Rapid swimming speeds are crucial for mammalian spermatozoa, because they need to overcome physical barriers in ...
Gomendio, Montserrat +5 more
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Frontiers in Ecology and Evolution, 2017 Sperm viability (SV), the proportion of live sperm in a sample, is a widely applied measure of sperm quality but few studies test its robustness. At least three reasons make SV problematic as a surrogate for sperm quality. First, reviewing the ecological
Barbara A. Eckel +2 more
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