Results 1 to 10 of about 161,937 (261)

Indirect routes to reproductive success

open access: yeseLife, 2012
By comparing wild-type and transgenic tobacco plants in a natural ecosystem, researchers have confirmed that the indirect defence mechanisms employed by plants to fend off herbivorous insects can increase Darwinian fitness.
John Pickett
doaj   +3 more sources

Female chronotype is not related to annual and lifetime reproductive success in a free-living songbird [PDF]

open access: yesRoyal Society Open Science
Circadian clocks play a crucial role in regulating the sleep–wake rhythm of organisms, aligning their activity with fluctuating environmental factors, such as light intensity. Still, significant and consistent interindividual differences in the timing of
Marjolein Meijdam   +2 more
doaj   +2 more sources

Post-copulatory competition in a social monogamy system: Sperm morphology correlates with components of reproductive success. [PDF]

open access: yesPLoS ONE
Males in socially monogamous species can achieve reproductive success through multiple tactics- by defending paternity within the social nest and siring extra-pair offspring, or both.
Carly E Hawkins   +3 more
doaj   +2 more sources

Does Reproductive Success in Orchids Affect the Evolution of Their Number of Flowers? [PDF]

open access: yesPlants
Species are disappearing worldwide, and changes in climate and land use are commonly assumed to be the most important causes. Organisms are counteracting the negative effects of environmental factors on their survival by evolving various defence ...
Iva Traxmandlová   +2 more
doaj   +2 more sources

Accurate Alternative Measurements for Female Lifetime Reproductive Success in Drosophila melanogaster.

open access: yesPLoS ONE, 2015
Fitness is an individual's ability to survive and reproduce, and is an important concept in evolutionary biology. However, accurately measuring fitness is often difficult, and appropriate fitness surrogates need to be identified.
Trinh T X Nguyen, Amanda J Moehring
doaj   +2 more sources

Staying Alive: Individual Behavioral Variation Influences Survival, but Not Reproductive Success, in Female Group‐Living Ground Squirrels [PDF]

open access: yesEcology and Evolution
Animals living in harsh or unpredictable environments adopt adaptive strategies to improve their fitness, with behavioral variation playing a key role in shaping individual outcomes.
Miyako H. Warrington   +4 more
doaj   +2 more sources

Sperm morphology and reproductive success

open access: yesAsian Journal of Andrology, 2016
Jason R Kovac, Larry I Lipshultz
doaj   +3 more sources

Cognition and reproductive success in cowbirds [PDF]

open access: yesLearning & Behavior, 2021
AbstractUnderstanding the relationships between cognitive abilities and fitness is integral to an evolutionary study of brain and behavior. However, these relationships are often difficult to measure and detect. Here we draw upon an opportunistic sample of brown-headed cowbird (Molothrus ater) subjects that had two separate research experiences: First,
White, David J.   +3 more
openaire   +2 more sources

Novel insights into the reproductive strategies of wild Chinese sturgeon (Acipenser sinensis) populations based on the kinship analysis

open access: yesWater Biology and Security, 2023
Understanding the reproductive strategy of an organism is important in conservation ecology as it directly affects the population performance under changing environmental conditions.
Dan Yu   +9 more
doaj   +1 more source

Pre-but not post-meiotic senescence affects sperm quality and reproductive success in the North African houbara bustard

open access: yesFrontiers in Ecology and Evolution, 2022
Age-dependent reduction in reproductive success can arise due to multiple factors including a deterioration of reproductive physiology. Senescing males have been shown to produce ejaculates with poor sperm quality, which impinges on male reproductive ...
Léna Meunier   +8 more
doaj   +1 more source

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