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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Rheotaxis-based sperm separation using a biomimicry microfluidic device
Scientific Reports, 2021 Sperm selection is crucial to assisted reproduction, influencing the success rate of the treatment cycle and offspring health. However, in the current clinical sperm selection practices, bypassing almost all the natural selection barriers is a major ...
Iman Ramazani Sarbandi +3 more
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Novel distance-progesterone-combined selection approach improves human sperm quality
Journal of Translational Medicine, 2018 Background Sperm selection is essential for the health of offspring conceived via assistive reproductive technology (ART). Various methods of sperm preparation for in vitro fertilization and intracytoplasmic sperm injection have been developed to acquire
Kun Li +6 more
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Cells, 2021 We present a new method for the selection of individual sperm cells using a microfluidic device that automatically traps each cell in a separate microdroplet that then individually self-assembles with other microdroplets, permitting the controlled ...
Yuval Atzitz +3 more
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The repeatable opportunity for selection differs between pre‐ and postcopulatory fitness components
Evolution Letters, 2021 In species with multiple mating, intense sexual selection may occur both before and after copulation. However, comparing the strength of pre‐ and postcopulatory selection is challenging, because (i) postcopulatory processes are generally difficult to ...
Lucas Marie‐Orleach +2 more
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Selection on male and female reproductive traits in a simultaneous hermaphrodite land snail [PDF]
, 2013 Classical sexual selection theory assumes that the reproductive success of females is limited by the resources available for egg production, while the reproductive success of males is determined by the number of mates (Bateman’s principle).
Minoretti, Nicole
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Selection for longer lived sperm within ejaculate reduces reproductive ageing in offspring
Evolution Letters, 2019 Males produce numerous sperm in a single ejaculate that greatly outnumber their potential egg targets. Recent studies found that phenotypic and genotypic variation among sperm in a single ejaculate of a male affects the fitness and performance of the ...
Ghazal Alavioon +4 more
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Impacts of sperm competition on mating behaviour and life history traits in a simultaneous hermaphrodite [PDF]
, 2013 Evolutionary theory suggests that post-copulatory sexual selection plays an important role in the evolution of reproductive traits of sexually reproducing animals.
Sandner, Peter
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Intramale variation in sperm size: functional significance in a polygynous mammal [PDF]
PeerJ, 2015 Studies concerning the relationships between sperm size and velocity at the intraspecific level are quite limited and often yielded contradictory results across the animal kingdom.
José Luis Ros-Santaella +2 more
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Sperm bauplan and function and underlying processes of sperm formation and selection
Physiological Reviews, 2022 The spermatozoon is a highly differentiated and polarized cell, with two main structures: the head, containing a haploid nucleus and the acrosomal exocytotic granule, and the flagellum, which generates energy and propels the cell; both structures are connected by the neck.
Maria Eugenia Teves +1 more
openaire +3 more sources