Results 11 to 20 of about 168,765 (262)
Indirect routes to reproductive success
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
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Sperm morphology and reproductive success
Jason R Kovac, Larry I Lipshultz
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Cognition and reproductive success in cowbirds [PDF]
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
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Bats are characterized by low reproductive rates in contrast with most of other small mammals. This makes their populations vulnerable when inclement environmental conditions such as cold and rainy weather impair the reproductive success of females.
Bianca Stapelfeldt +5 more
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Influence of Early Reproductive Success on Longevity and Late Reproductive Success in an Alpine Ungulate [PDF]
The life-history theories of aging predict lifetime trade-offs between early reproductive allocation and late-life survival, reproduction, or both components of fitness. Recent studies in wild populations have found evidence for these early-late life trade-offs, but rarely have they been found across multiple traits while exploring the additional ...
Andrea, Panagakis +2 more
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Many avian migrants have not adjusted breeding phenology to climate warming resulting in negative consequences for their offspring. We studied seasonal changes in reproductive success of the greater snow goose (Anser caerulescens atlantica), a long ...
Cynthia Reséndiz-Infante +1 more
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Many of the world’s freshwater ecosystems are degrading with increasing water resource developments, necessitating identification of useful indicators that track large scale environmental change. We investigated the effectiveness of waterbird breeding at
R.J. Francis +2 more
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Endoparasite infection has both short- and long-term negative effects on reproductive success of female house sparrows, as revealed by faecal parasitic egg counts. [PDF]
Parasites have the potential to severely reduce host reproductive success. However, the effects of endoparasites on reproductive success have not received the same amount of attention as the effects of parasites on host survival.
Håkon Holand +5 more
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Pheromones that correlate with reproductive success in competitive conditions
The major urinary proteins (MUPs) of house mice (Mus musculus) bind and stabilize the release of pheromones and other volatile organic compounds (VOCs) from urinary scent marks, which mediate chemical communication.
Kenneth C. Luzynski +5 more
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Selecting habitat to what purpose? The advantage of exploring the habitat–fitness relationship
Measures of reproductive success have been recognized in many fields as essential tools to assess the status of populations, species, and communities. However, difficulties in gathering data on reproductive success often prevent researchers from taking ...
Alessia Uboni +3 more
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