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Sperm morphological diversity
Publisher Summary This chapter reviews the current knowledge of variation in sperm
morphology over several levels of biological organization: variation within males (both within …
morphology over several levels of biological organization: variation within males (both within …
Evolutionary trade-off between secondary sexual traits and ejaculates
Recent theoretical models predict that the evolutionary diversification of the weapons and
ornaments of pre-mating sexual selection should be influenced by trade-offs with male …
ornaments of pre-mating sexual selection should be influenced by trade-offs with male …
Polyandry as a mediator of sexual selection before and after mating
The Darwin–Bateman paradigm recognizes competition among males for access to multiple
mates as the main driver of sexual selection. Increasingly, however, females are also being …
mates as the main driver of sexual selection. Increasingly, however, females are also being …
Sperm competition games: a general model for precopulatory male–male competition
Reproductive males face a trade-off between expenditure on precopulatory male–male
competition—increasing the number of females that they secure as mates—and sperm …
competition—increasing the number of females that they secure as mates—and sperm …
The total opportunity for sexual selection and the integration of pre‐and post‐mating episodes of sexual selection in a complex world
It is well known that sexual selection can target reproductive traits during successive pre‐
and post‐mating episodes of selection. A key focus of recent studies has been to understand …
and post‐mating episodes of selection. A key focus of recent studies has been to understand …
The evolutionary ecology of pre-and post-meiotic sperm senescence
Male reproductive success is an extremely variable fitness component. Understanding the
maintenance of this variation is a key challenge in evolutionary biology. An often neglected …
maintenance of this variation is a key challenge in evolutionary biology. An often neglected …
Experimental heatwaves negatively impact sperm quality in the zebra finch
For sexually reproducing species, functionally competent sperm are critical to reproduction.
While high atmospheric temperatures are known to influence the timing of breeding …
While high atmospheric temperatures are known to influence the timing of breeding …
Male contest competition and the coevolution of weaponry and testes in pinnipeds
Male reproductive success is influenced by competitive interactions during precopulatory
and postcopulatory selective episodes. Consequently, males can gain reproductive …
and postcopulatory selective episodes. Consequently, males can gain reproductive …
Ontogenetic complexity of sexual dimorphism and sex-specific selection
Sex-biased gene expression is becoming an increasingly important way to study sexual
selection at the molecular genetic level. However, little is known about the timing …
selection at the molecular genetic level. However, little is known about the timing …
Changes in sperm quality and numbers in response to experimental manipulation of male social status and female attractiveness
In promiscuous species, male reproductive success is determined by the interaction
between the ability to access and choose females of the highest reproductive quality and …
between the ability to access and choose females of the highest reproductive quality and …