Results 11 to 20 of about 220,871 (359)
Male sperm storage impairs sperm quality in the zebrafish [PDF]
Scientific Reports, 2021 Variation in sperm traits is widely documented both at inter- and intraspecific level. However, sperm traits vary also between ejaculates of the same male, due for example, to fluctuations in female availability.
Silvia Cattelan, Clelia Gasparini
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Sperm Quality Assessment in Honey Bee Drones [PDF]
Biology, 2020 The quality of honey bee drone semen is relevant in different contexts, ranging from colony productivity to pathology, toxicology and biodiversity preservation.
Jesús L. Yániz +2 more
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Superior sperm competitors sire higher-quality young [PDF]
Proceedings of the Royal Society of London. Series B: Biological Sciences, 2003 The evolution of polyandry remains controversial. This is because, unlike males, in many cases multiple mating by females does not increase fecundity and inevitably involves some costs.
Garner, T.W.J. +4 more
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BMJ, 1994 EDITOR, - It has been suggested that environmental factors, possibly acting in fetal and early neonatal life, may be having long term adverse effects on the male reproductive system,1 and that this is leading to an observed deterioration in semen quality2 together with an increase in the incidence of congenital malformations of the male reproductive ...
Keiding, N. +3 more
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IMSI—Guidelines for Sperm Quality Assessment [PDF]
Diagnostics, 2022 Intracytoplasmic sperm injection (ICSI) is a widely used and accepted treatment of choice for oocyte fertilization. However, the quality of sperm selection depends on the accurate visualization of the morphology, which can be achieved with a high image resolution.
Krzysztof Lukaszuk +8 more
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Mitochondria functionality and sperm quality [PDF]
REPRODUCTION, 2013 Although mitochondria are best known for being the eukaryotic cell powerhouses, these organelles participate in various cellular functions besides ATP production, such as calcium homoeostasis, generation of reactive oxygen species (ROS), the intrinsic apoptotic pathway and steroid hormone biosynthesis. The aim of this review was to discuss the putative
Amaral, Alexandra +3 more
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Physical activity and sperm quality: influence in sperm donors
Reproductive Biology and Endocrinology, 2022 Abstract Purpose To ascertain whether physical activity (PA) is associated with better sperm quality in sperm donors. Methods A prospective case–control study was designed in an IVF center setting. A total of 207 sperm donation candidates from a relatively small geographical
Roberto Matorras +8 more
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iScience, 2023 Summary: Assisted reproductive technology (ART) is an important invention for the treatment of human infertility, and the isolation of high-quality sperm with progressive motility is one of the most critical steps that eventually affect the fertilization
Chung-Hsien Huang +5 more
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Molecular markers of sperm quality [PDF]
Reproduction in Domestic Ruminants, 2010 Light microscopic semen evaluation provides useful information about a given sperm sample, but due to its subjective nature has limited prognostic value for the reproductive performance of males or the outcome of assisted fertilization. Cryptic sperm abnormalities (occurring at the molecular level) are not easily detectable by light microscopy, but can
P, Sutovsky, K, Lovercamp
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Sperm storage by males causes changes in sperm phenotype and influences the reproductive fitness of males and their sons [PDF]
, 2017 Recent studies suggest that environmentally induced effects on sperm phenotype can influence offspring phenotype beyond the classic Mendelian inheritance mechanism.
Adriaenssens +54 more
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