Results 61 to 70 of about 3,300,887 (297)

Sexual Selection and Sexual Dimorphism in Mottled Sculpins [PDF]

open access: yesEvolution, 1983
There are two aspects to sexual selection (Darwin, 1871). Intra-sexual selection focuses on the consequences of competition between members of one sex (usually males) for access to the other sex; whereas epigamic selection or female choice focuses on the consequences of mate preferences of one sex (usually females) with regard to the other sex ...
Jerry F, Downhower   +3 more
openaire   +2 more sources

Can sexual selection drive female life histories? A comparative study on Galliform birds [PDF]

open access: yes, 2007
Sexual selection has been identified as a major evolutionary force shaping male life history traits but its impact on female life history evolution is less clear.
A. Ø. Mooers   +14 more
core   +1 more source

Sexual selection, environmental robustness, and evolutionary demography of maladapted populations: A test using experimental evolution in seed beetles

open access: yesEvolutionary Applications, 2019
Whether sexual selection impedes or aids adaptation has become an outstanding question in times of rapid environmental change and parallels the debate about how the evolution of individual traits impacts on population dynamics.
Ivain Martinossi‐Allibert   +3 more
doaj   +1 more source

Sexual selection and sex allocation in a simultaneous hermaphrodite [PDF]

open access: yes, 2010
Since Darwin’s pioneering work, sexual selection theory has become a unifying framework in evolutionary biology successfully explaining the variation in sexual dimorphism, reproductive strategies and mating systems. Although, it has long been argued that
Janicke, Tim
core   +1 more source

Frequency-dependent sexual selection with respect to offspring fitness returns is consistent with predictions from rock-paper-scissors dynamics in the European common lizard

open access: yesFrontiers in Ecology and Evolution, 2014
Genetic polymorphism can be maintained over time by negative frequency-dependent (FD) selection induced by Rock-paper-scissors (RPS) social systems. RPS games produce cyclic dynamics, and have been suggested to exist in lizards, insects, isopods, plants,
Patrick S. Fitze   +12 more
doaj   +1 more source

Adaptation to a bacterial pathogen in Drosophila melanogaster is not aided by sexual selection

open access: yesEcology and Evolution, 2022
Theory predicts that sexual selection should aid adaptation to novel environments, but empirical support for this idea is limited. Pathogens are a major driver of host evolution and, unlike abiotic selection pressures, undergo epidemiological and co ...
Sakshi Sharda   +2 more
doaj   +1 more source

Sexual selection, germline mutation rate and sperm competition

open access: yesBMC Evolutionary Biology, 2003
Background An important component of sexual selection arises because females obtain viability benefits for their offspring from their mate choice.
Møller AP, Cuervo JJ
doaj   +1 more source

Divergent natural selection alters male sperm competition success in Drosophila melanogaster

open access: yesEcology and Evolution, 2022
Sexually selected traits may also be subject to non‐sexual selection. If optimal trait values depend on environmental conditions, then “narrow sense” (i.e., non‐sexual) natural selection can lead to local adaptation, with fitness in a certain environment
Ralph Dobler   +4 more
doaj   +1 more source

Can Sexual Selection Drive the Evolution of Sperm Cell Structure?

open access: yesCells, 2021
Sperm cells have undergone an extraordinarily divergent evolution among metazoan animals. Parker recognized that because female animals frequently mate with more than one male, sexual selection would continue after mating and impose strong selection on ...
Leigh W. Simmons   +1 more
doaj   +1 more source

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