Results 111 to 120 of about 66,025 (308)
Oocyte–cumulus cell interaction: a key factor in early embryo development
Biological Reviews, EarlyView.ABSTRACT The evaluation of oocyte competence is a fundamental step in achieving successful outcomes following assisted reproduction techniques (ART). At present, however, conventional oocyte maturation assessment is carried out by morphological observation, which is a subjective method that does not consider molecular features.
Marc Torres‐Garrido +2 more
wiley +1 more source
Sperm motility-inhibiting factor in rat epididymis [PDF]
, 1982 Rat spermatozoa collected by micropuncture from the cauda epididymidis are immotile when diluted in cell-free cauda epididymidal fluid but are vigorously motile when diluted in 0.154 M NaCl.
R. D. Giles, T. T. Turner
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The costs of extra‐pair behaviours in birds
Biological Reviews, EarlyView.ABSTRACT Extra‐pair behaviours – reproductive behaviours, including those related to copulation and paternity of offspring, amongst animals outside of a social pair bond – have long intrigued behavioural ecologists, particularly from the female animal's perspective.
Jørgen S. Søraker, Jamie Dunning
wiley +1 more source
Sperm Competition and the Function of Masturbation in Japanese Macaques (Macaca fuscata) [PDF]
, 2001 Male masturbation or sexual-auto stimulation is well documented in humans. This study dealt with the occurrence of masturbation in non-human primates in general, and in Japanese macaques (Macaca fuscata) in particular, from the perspective of ...
Thomsen, Ruth
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Di (2-ethylhexyl) phthalate reduces sperm motility by decreasing sperm tail energy supply
Ecotoxicology and Environmental SafetyDi (2-ethylhexyl) phthalate (DEHP) is widespread in the environment. It can impair sperm function through damaging the sperm development process. However, few studies have focused on the sperm tail that is directly related to sperm motility.
Xiao-lu Li +13 more
doaj +1 more source
Serum lipid profiles are associated with semen quality
Asian Journal of Andrology, 2017 We aimed to explore the associations between different lipid profiles and semen quality in a large-scale general male population. Sperm concentration, total sperm motility, progressive motility, and normal sperm morphology of total 7601 participants were
Chin-Yu Liu +6 more
doaj +1 more source
Partners or passengers? Revisiting the association between diatoms and aquatic animals
Biological Reviews, EarlyView.ABSTRACT Numerous studies have revealed the importance of research on the communities capable of colonizing animal surfaces (epibionts) and the animals on which they live (basibionts). Very few studies have considered epizoic diatoms, and there are gaps and biases in our knowledge, including the choice of basibionts, the methods used, and the habitats ...
Gianluca Vacca +2 more
wiley +1 more source
Sperm motility and energetics [PDF]
, 2009 Although there is much variation in sperm structure among taxa, most sperm types possess four core elements: a paternal haploid nucleus payload of DNA; a source of energy in the mitochondrial and glycolytic metabolic systems; a motor (the flagellum) to ...
Cummins, J.
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Biological Reviews, EarlyView.ABSTRACT Heat stress (HS) is an increasing threat to male reproductive health, disrupting spermatogenesis through complex and interdependent cellular responses within the seminiferous epithelium. Although excessive reactive oxygen species (ROS) production is a hallmark of HS, ROS also act as central regulators of cell fate decisions beyond their role ...
Ribrio Ivan Tavares Pereira Batista
wiley +1 more source
EFFECT OF DIFFERENT CRYOPROTECTIVE AGENTS ON SKIM MILK AND DIMITROPOULUS EXTENDER FOR STALLION SEMEN CRYOPRESERVATION [PDF]
, 2010 Cryoprotective agents (CPAs) protect sperm during cryopreservation. The objective of this study was to assess different CPAs on stallion semen cryopreservation. Skim milk (SM) and Dimitropoulos (DV) were the extenders used in this study; each was added
Purwantara, B +3 more
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