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Cooperation of Sperm in Two Dimensions: Synchronization, Attraction and Aggregation through Hydrodynamic Interactions [PDF]
, 2008 Sperm swimming at low Reynolds number have strong hydrodynamic interactions when their concentration is high in vivo or near substrates in vitro. The beating tails not only propel the sperm through a fluid, but also create flow fields through which sperm
D. M. Woolley +5 more
core +2 more sources
Come together over me: Cells that form the dermatocranium and chondrocranium in mice
The Anatomical Record, EarlyView., 2023 Abstract Most bone develops either by intramembranous ossification where bone forms within a soft connective tissue, or by endochondral ossification by way of a cartilage anlagen or model. Bones of the skull can form endochondrally or intramembranously or represent a combination of the two types of ossification.
M. Kathleen Pitirri +5 more
wiley +1 more source
Human sperm ion channel (dys)function:implications for fertilization [PDF]
, 2019 BACKGROUND: Intensive research on sperm ion channels has identified members of several ion channel families in both mouse and human sperm. Gene knock-out studies have unequivocally demonstrated the importance of the calcium and potassium conductances in ...
Barratt, Christopher L. R. +3 more
core +3 more sources
Gamete evolution and sperm numbers: sperm competition versus sperm limitation [PDF]
Proceedings of the Royal Society B: Biological Sciences, 2014 Both gamete competition and gamete limitation can generate anisogamy from ancestral isogamy, and both sperm competition (SC) and sperm limitation (SL) can increase sperm numbers. Here, we compare the marginal benefits due to these two components at any given population level of sperm production using the risk and intensity models in sperm economics. We
Jussi Lehtonen, Geoff A. Parker
openaire +3 more sources
Involvement of sperm acetylated histones and the nuclear isoform of Glutathione peroxidase 4 in fertilization [PDF]
, 2017 We previously demonstrated that the nuclear form of Glutathione peroxidase 4 (nGPx4) has a peculiar distribution in sperm head, being localized to nuclear matrix and acrosome and that sperm lacking nGPx4 are more prone to decondensation in vitro. In this
Boitani, Carla +8 more
core +1 more source
Hydrodynamic propulsion of human sperm [PDF]
, 2009 The detailed fluid mechanics of sperm propulsion are fundamental to our understanding of reproduction. In this paper, we aim to model a human sperm swimming in a microscope slide chamber.
ALLAN A. PACEY +10 more
core +1 more source
DNA fragmentation index (DFI) as a measure of sperm quality and fertility in mice. [PDF]
, 2020 Although thousands of genetically modified mouse strains have been cryopreserved by sperm freezing, the likelihood of cryorecovery success cannot be accurately predicted using conventional sperm parameters.
Li, Ming-Wen, Lloyd, KC Kent
core +1 more source
Proceedings of the National Academy of Sciences, 2006 When females are sexually promiscuous, the ejaculates of different males may compete for the fertilization of a set of ova, a process known as sperm competition. In internally fertilizing species, potential for sperm competition occurs whenever the ejaculates of different males cooccur in the female reproductive tract at the time of ovulation.
openaire +3 more sources
Sperm morphology and sperm velocity in passerine birds [PDF]
Proceedings of the Royal Society B: Biological Sciences, 2008 Sperm velocity is one of the main determinants of the outcome of sperm competition. Since sperm vary considerably in their morphology between and within species, it seems likely that sperm morphology is associated with sperm velocity. Theory predicts that sperm velocity may be increased by enlarged midpiece (energetic component) or flagellum length ...
Lüpold S +3 more
openaire +5 more sources
Psychological and physiological adaptations to sperm competition in humans [PDF]
, 2005 Postcopulatory competition between males, in the form of sperm competition, is a widespread phenomenon in many animal species. The extent to which sperm competition has been an important selective pressure during human evolution remains controversial ...
Goetz, AT, Pound, N, Shackelford, TK
core +2 more sources