Results 21 to 30 of about 577,400 (301)
Fitness Costs of Female Reproduction [PDF]
Evolution, 1997 Here we present a method to estimate the fitness costs of trade-offs between reproduction and survival. The approach demonstrates that there is an apparent fitness cost to mating, but not to egg production, in the fruit fly Drosophila melanogaster. In light of this result, we argue that fitness tradeoffs in females that result from resources females ...
Marc, Tatar, Daniel E L, Promislow
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Frontiers in Ecology and Evolution, 2023 The steep rise of infections caused by bacteria that are resistant to antimicrobial agents threatens global health. However, the association between antimicrobial use and the prevalence of resistance is not straightforward.
Amalia Bogri +3 more
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Frontiers in Microbiology, 2021 We set out to study the prevalence of the mcr-1 gene in carbapenemase-producing Klebsiella pneumoniae (CPKP) strains, and to determine whether its presence is associated with a fitness cost.
Yi-Hsiang Cheng +10 more
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erm(T)-Mediated Macrolide-Lincosamide Resistance in Streptococcus suis
Microbiology Spectrum, 2022 To investigate the presence and location of erm(T) in clinical Streptococcus suis isolates and explore the transmission ability and fitness cost of erm(T)-carrying mobile genetic elements among S.
Rui Yu +7 more
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Fitness costs associated with chemical signaling [PDF]
Communicative & Integrative Biology, 2012 The production, maintenance and transmission of chemical signals often entail costs. Costs can arise, for instance, if signal production depends on the availability of limited nutritional resources or if signal transmission leads to attraction of predators.
Sandra, Steiger +2 more
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Compensating the Fitness Costs of Synonymous Mutations [PDF]
Molecular Biology and Evolution, 2016 Synonymous mutations do not change the sequence of the polypeptide but they may still influence fitness. We investigated in Salmonella enterica how four synonymous mutations in the rpsT gene (encoding ribosomal protein S20) reduce fitness (i.e., growth rate) and the mechanisms by which this cost can be genetically compensated.
Knöppel, Anna +2 more
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Fitness costs in spatially structured environments [PDF]
Evolution, 2014 AbstractThe clustering of individuals that results from limited dispersal is a double-edged sword: while it allows for local interactions to be mostly among related individuals, it also results in increased local competition. Here I show that, because they mitigate local competition, fitness costs such as reduced fecundity or reduced survival are less ...
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Insects, 2023 Knowledge about resistance mechanisms can provide ideas for pesticide resistance management. Although several studies have unveiled the positive or negative impacts of gut microbes on host pesticide resistance, minimal research is available regarding the
Zhengyan Wang +4 more
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Microbiology Spectrum, 2022 IncX3 and IncL plasmids have been named as catalysts advancing dissemination of blaOXA-181 and blaOXA-48 genes. However, their impact on the performance of host cells is vastly understudied. Genetic characteristics of blaOXA-48- and blaOXA-181-containing
Samiratu Mahazu +11 more
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Frontiers in Microbiology, 2021 Plasmid-mediated colistin resistance gene mcr-1 generally confers low-level resistance. The purpose of this study was to investigate the impact of mcr-1 on the development of high-level colistin resistance (HLCR) in Klebsiella pneumoniae and Escherichia ...
Xiao-Qing Zhu +14 more
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