Results 11 to 20 of about 560,412 (358)

Indirect routes to reproductive success

eLife, 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]

Royal 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, Marcel Eens, Wendt Müller   +2 more
doaj   +2 more sources

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

PLoS 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, Thomas P Hahn, Jessica L Malisch, Gail L Patricelli   +3 more
doaj   +2 more sources

Fitness benefits of prolonged post-reproductive lifespan in women [PDF]

Nature, 2004
Most animals reproduce until they die, but in humans, females can survive long after ceasing reproduction. In theory, a prolonged post-reproductive lifespan will evolve when females can gain greater fitness by increasing the success of their offspring ...
A Cockburn, AF Russell, AM Soininen, Andrew F. Russell, B Moring, CS Jamison, DP Shanley, E Voland, G Bouchard, G Bouchard, G Luther, GC Williams, H Gille, JB McGraw, JL Brown, K Hawkes, K Hawkes, K Hawkes, Marc Tremblay, Mirkka Lahdenperä, R Schall, R Sear, R Sear, RC Littell, RD Lee, S Karskela, Samuli Helle, ST Emlen, ST Emlen, TH Clutton-Brock, V Lummaa, V Lummaa, Virpi Lummaa, WD Hamilton   +33 more
core   +3 more sources

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

Plants
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, Michaela Steffelová, Pavel Kindlmann   +2 more
doaj   +2 more sources

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

Ecology 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, Annemarie van derMarel, Jennifer Sojka, Krista J. Shofstall, Jane M. Waterman   +4 more
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Sperm morphology and reproductive success

Asian Journal of Andrology, 2016
Jason R Kovac, Larry I Lipshultz
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Novel insights into the reproductive strategies of wild Chinese sturgeon (Acipenser sinensis) populations based on the kinship analysis

Water 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, Xin Gao, Zhongyuan Shen, Masami Fujiwara, Ping Yang, Tao Chang, Futie Zhang, Xinghua Wu, Zhonghua Duan, Huanzhang Liu   +9 more
doaj   +1 more source

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

Frontiers 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, Léna Meunier, Gabriele Sorci, Hiba Abi Hussein, Yves Hingrat, Noé Rehspringer, Michel Saint-Jalme, Loïc Lesobre, Janaina Torres Carreira   +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

Ecology 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, James Bence, Patrick S. Forsythe, James A. Crossman, Edward A. Baker, Nicholas M. Sard, Kim T. Scribner   +6 more
doaj   +1 more source