Sperm morphological diversity

S Pitnick, DJ Hosken, TR Birkhead - Sperm biology, 2009‏ - Elsevier
Publisher Summary This chapter reviews the current knowledge of variation in sperm
morphology over several levels of biological organization: variation within males (both within …

Evolutionary trade-off between secondary sexual traits and ejaculates

LW Simmons, S Lüpold, JL Fitzpatrick - Trends in ecology & evolution, 2017‏ - cell.com
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 …

Polyandry as a mediator of sexual selection before and after mating

C Kvarnemo, LW Simmons - … Transactions of the Royal …, 2013‏ - royalsocietypublishing.org
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 …

Sperm competition games: a general model for precopulatory male–male competition

GA Parker, CM Lessells, LW Simmons - Evolution, 2013‏ - academic.oup.com
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 …

The total opportunity for sexual selection and the integration of pre‐and post‐mating episodes of sexual selection in a complex world

JP Evans, F Garcia‐Gonzalez - Journal of Evolutionary Biology, 2016‏ - academic.oup.com
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 …

The evolutionary ecology of pre-and post-meiotic sperm senescence

T Pizzari, R Dean, A Pacey, H Moore… - Trends in Ecology & …, 2008‏ - cell.com
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 …

Experimental heatwaves negatively impact sperm quality in the zebra finch

LL Hurley, CS McDiarmid… - … of the Royal …, 2018‏ - royalsocietypublishing.org
For sexually reproducing species, functionally competent sperm are critical to reproduction.
While high atmospheric temperatures are known to influence the timing of breeding …

Male contest competition and the coevolution of weaponry and testes in pinnipeds

JL Fitzpatrick, M Almbro, A Gonzalez-Voyer, N Kolm… - …, 2012‏ - academic.oup.com
Male reproductive success is influenced by competitive interactions during precopulatory
and postcopulatory selective episodes. Consequently, males can gain reproductive …

Ontogenetic complexity of sexual dimorphism and sex-specific selection

JE Mank, K Nam, B Brunström… - Molecular Biology and …, 2010‏ - academic.oup.com
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 …

Changes in sperm quality and numbers in response to experimental manipulation of male social status and female attractiveness

CK Cornwallis, TR Birkhead - The American Naturalist, 2007‏ - journals.uchicago.edu
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 …