Sperm morphology, sperm motility and paternity success in the bluethroat (Luscinia svecica). [PDF]
PLoS ONE, 2018 Postcopulatory sexual selection may select for male primary sexual characteristics like sperm morphology and sperm motility, through sperm competition or cryptic female choice.
Camilla Lo Cascio Sætre +3 more
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The association between male infertility and sperm disomy: Evidence for variation in disomy levels among individuals and a correlation between particular semen parameters and disomy of specific chromosome pairs [PDF]
, 2004 BACKGROUND: The association between infertility and sperm disomy is well documented. Results vary but most report that men with severely compromised semen parameters have a significantly elevated proportion of disomic sperm.
Xiao P Zhai +27 more
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Analisis Motilitas Dan Morfologi Spermatozoa Pria perokok Usia 18-24 tahun
Majalah Kedokteran Andalas, 2023 Background: Smoking is one of lifestyle factors which lead to health problems in society. Smoke can decrease the quality of spermatozoa by various mechanisms, one of which is the seminal oxidative stress induced by Reactive Oxygen Species (ROS ...
yosha putri wahyuni
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Phenotypic plasticity in sperm traits in scorpionflies (Mecoptera: Panorpidae): consequences of larval history and seasonality on sperm length and sperm transfer [PDF]
, 2009 Vermeulen A, Engels S, Engqvist L, Sauer KP. Phenotypic plasticity in sperm traits in scorpionflies (Mecoptera: Panorpidae): consequences of larval history and seasonality on sperm length and sperm transfer. European Journal of Entomology.
Vermeulen, Andreas +8 more
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Post-Meiotic Intra-Testicular Sperm Senescence in a Wild Vertebrate [PDF]
, 2012 There is growing interest in sperm senescence, both in its underlying mechanisms and evolutionary consequences, because it can impact the evolution of numerous life history traits. Previous studies have documented various types of sperm senescence, but
Richard H. Wagner +16 more
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Measurement and significance of sperm morphology [PDF]
Asian Journal of Andrology, 2010 The measurement or evaluation and clinical significance of human sperm morphology has always been and still is a controversial aspect of the semen analysis for the determination of a male's fertility potential. In this review the background of the development of the evaluation criteria for sperm morphology will be discussed. Aspects of criticism on the
Roelof, Menkveld +2 more
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Sexual selection in a simultaneous hermaphrodite : mate choice and sperm utilization patterns [PDF]
, 2011 Sexual selection processes, in general, are distinguished in precopulatory and postcopulatory mechanisms. In the animal kingdom, precopulatory mechanisms are related to mate competition and mate choice before the copulation.
Kupfernagel, Sandra
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Sperm morphology and the evolution of intracellular sperm–egg interactions [PDF]
Ecology and Evolution, 2018 AbstractSperm morphology is incredibly diverse, even among closely related species, yet the coevolution between males and females of fertilization recognition systems is necessary for successful karyogamy (male and female pronuclear fusion). In most species, the entire sperm enters the egg during fertilization so sperm morphological diversity may ...
Helen M. Southern +3 more
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Extensive variation in sperm morphology in a frog with no sperm competition [PDF]
BMC Evolutionary Biology, 2016 Recent comparative studies of several taxa have found that within-species variation in sperm size decreases with increasing levels of sperm competition, suggesting that male-male gamete competition selects for an optimal sperm phenotype. Previous studies of intraspecific sperm length variation have all involved internal fertilizers where some other ...
Stewart, Kathryn A. +2 more
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Asian Pacific Journal of Reproduction, 2021 Objective: To study the effect of mobile emitted radio frequency electromagnetic radiation (RF-EMR) on sperm parameters (sperm count, viability, motility, progressivity, and morphology) and ameliorative effect of pomegranate juice in rats.
Anjaneyababu Naik Banavath +1 more
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