Results 1 to 10 of about 577,400 (301)
Fitness gains hamper efforts to tackle drug resistance
eLife, 2013 It has long been assumed that resistance to antibiotics reduces the fitness of disease-causing bacteria, but experiments on Salmonella Typhi, the bacteria that causes Typhoid fever, are now challenging this view.
Shanta Dutta
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Fitness cost of drug resistance inMycobacterium tuberculosis [PDF]
Clinical Microbiology and Infection, 2009 Multidrug-resistant (MDR)--and extensively drug-resistant (XDR)--forms of tuberculosis are growing public health problems. Mathematical models predict that the future of the MDR and XDR tuberculosis epidemics depends in part on the competitive fitness of drug-resistant strains.
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Frontiers in Microbiology, 2020 Plasmids can provide advantageous traits to host bacteria, although they may impose a fitness cost. Chromosome-encoded factors are important for regulating the expression of genes on plasmids, and host chromosomes may differ in terms of their ...
Hibiki Kawano +8 more
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Biology, 2022 The fall armyworm, Spodoptera frugiperda (J.E. Smith), is a voracious insect pest that is difficult to control due to resistance to insecticides and Bt proteins.
Muhammad Hafeez +14 more
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Differential fitness costs of reproduction between the sexes [PDF]
Proceedings of the National Academy of Sciences, 2007 Natural selection does not necessarily favor maximal reproduction because reproduction imposes fitness costs, reducing parental survival, and offspring quality. Here, we show that parents in a preindustrial population in North America incurred fitness costs from reproduction, and women incurred greater costs than men.
Dustin J, Penn, Ken R, Smith
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Comparison of Weighted Sum Fitness Functions for PSO Optimization of Wideband Medium-gain Antennas [PDF]
, 2012 In recent years PSO (Particle Swarm Optimization) has been successfully applied in antenna design. It is well-known that the cost function has to be carefully chosen in accordance with the requirements in order to reach an optimal result.
Vandenbosch, G. A. E., Zhongkun Ma
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A genetic approach to Markovian characterisation of H.264 scalable video [PDF]
, 2011 We propose an algorithm for multivariate Markovian characterisation of H.264/SVC scalable video traces at the sub-GoP (Group of Pictures) level. A genetic algorithm yields Markov models with limited state space that accurately capture temporal and inter ...
Bruneel, Herwig +2 more
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Insecticide Resistance and Fitness Cost
, 2016 The intensive use of chemicals through decades has been selecting resistant popula‐ tions of several insect species to distinct classes of insecticides, like neurotoxics, in‐ sect growth regulators, and toxins derived from bacteria. Insecticide resistance is nowadays a huge challenge for control programs of pests of rural practices and principally to ...
Belinato, Thiago Affonso +1 more
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Fitness costs of worker specialization for ant societies [PDF]
Proceedings of the Royal Society B: Biological Sciences, 2016 Division of labour is of fundamental importance for the success of societies, yet little is known about how individual specialization affects the fitness of the group as a whole. While specialized workers may be more efficient in the tasks they perform than generalists, they may also lack the flexibility to respond to rapid shifts in task ...
Evelien, Jongepier, Susanne, Foitzik
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Costs of colour change in fish: food intake and behavioural decisions [PDF]
, 2013 Many animals, particularly reptiles, amphibians, fish and cephalopods, have the ability to change their body colour, for functions including thermoregulation, signalling and predator avoidance.
Corless, Hannah F. +3 more
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