Results 1 to 10 of about 161,435 (115)

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

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

Individual‐based analyses reveal effects of behavioral and demographic variables associated with multi‐annual reproductive success of male and female lake sturgeon

open access: yesEcology and Evolution, 2023
Quantifying effects of individual attributes and population demographic characteristics that affect inter‐ and intrasexual interactions and adult reproductive success, and the spatial and temporal contexts in which they are expressed is important to ...
Thuy‐Yen Duong   +6 more
doaj   +1 more source

Broodstock History Strongly Influences Natural Spawning Success in Hatchery Steelhead (Oncorhynchus mykiss). [PDF]

open access: yesPLoS ONE, 2016
We used genetic parentage analysis of 6200 potential parents and 5497 juvenile offspring to evaluate the relative reproductive success of hatchery and natural steelhead (Onchorhynchus mykiss) when spawning in the wild between 2008 and 2011 in the ...
Michael J Ford   +4 more
doaj   +1 more source

Determinants and long‐term costs of early reproduction in males of a long‐lived polygynous mammal

open access: yesEcology and Evolution, 2021
In long‐lived polygynous species, male reproductive success is often monopolized by a few mature dominant individuals. Young males are generally too small to be dominant and may employ alternative tactics; however, little is known about the determinants ...
Yanny Ritchot   +3 more
doaj   +1 more source

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