Fitness Costs
Mostrando 1-12 de 54 artigos, teses e dissertações.
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1. Effects of entomopathogenic nematodes Steinernema carpocapsae and Heterorhabditis bacteriophora on the fitness of a Vip3A resistant subpopulation of Heliothis virescens (Noctuidae: Lepidoptera)
ABSTRACT The widespread use of transgenic plants imposes selection pressure on insect pest populations to develop insecticide resistance. Evaluation of effectiveness of resistance management strategies is very important in resistance management programs. Resistance management to insecticides is widely believed to depend in part on associated fitness costs. F
Bragantia. Publicado em: 2020-06
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2. Glyphosate Resistance Affect the Physiological Quality of Conyza bonariensis seeds
RESUMO: A alta capacidade de produção e dispersão de sementes e a resistência ao glyphosate estão entre os principais fatores que tornaram a buva (Conyza bonariensis) uma das mais importantes e dispersas plantas daninhas no mundo. Populações de plantas resistentes a herbicidas podem apresentar penalidades em função das alterações moleculares, fisi
Planta daninha. Publicado em: 02/12/2019
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3. No fitness costs are induced by Spiroplasma infections of Aphis citricidus reared on two different host plants
Resumo Pulgões podem abrigar vários simbiontes secundários que alteram características ecológicas importantes, como defesa contra inimigos naturais, tolerância ao calor e utilização da planta hospedeira. Um desses simbiontes secundários, Spiroplasma, é estudado em Drosophila por alterar a razão sexual e interagir com o sistema imunológico do hosp
Braz. J. Biol.. Publicado em: 04/07/2019
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4. Growth, phenology, and seed viability between glyphosate-resistant and glyphosate-susceptible hary fleabane
ABSTRACT Glyphosate is the herbicide most used worldwide. In cropping systems that rely on repeated applications of glyphosate or cultivate genetically modified soyabean crop, there are numerous cases of glyphosate resistant weeds, including Conyza bonariensis. Differences among competitive ability of Conyza spp. have been found. However, little information
Bragantia. Publicado em: 2017-03
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5. Locomotion and survival of two sympatric larval anurans, Bufo gargarizans (Anura: Bufonidae) and Rana zhenhaiensis (Anura: Ranidae), after partial tail loss
Tadpoles of two sympatric anurans, Bufo gargarizans Cantor, 1842 and Rana zhenhaiensis Ye, Fei & Matsui, 1995, were used as model organisms to examine the effects of different levels of tail loss on swimming performance and survival. On average, B. gargarizans tadpoles were shorter and had smaller tails and body mass than R. zhenhaiensis. After 75% tail loss
Zoologia (Curitiba). Publicado em: 2014-08
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6. Morphological traits and type of dairy goats registered in Brazil from 1976 to 2009
Data from 2439 goats of the Saanen, Alpine, Anglo Nubian and Toggenburg breeds recorded from 1976 to 2009 by the Association of Goats and Sheep Breeders of Minas Gerais were used in principal component analysis. After consistency of data, six morphological variables (thorax perimeter, body length, withers height, height, width and length of the rump) and 12
R. Bras. Zootec.. Publicado em: 2013-12
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7. Efeito da resistência de Spodoptera frugiperda (J.E.Smith, 1797) (Lepidoptera: Noctuidae) a lambda-cyhalothrin na interação com o milho geneticamente modificado (MON810) e na resposta imunológica ao parasitismo por Campoletis af / Effect of resistance of Spodoptera frugiperda (J.E. Smith, 1797) (Lepidoptera: Noctuidae) to lambda-cyhalothrin on the interaction with genetically modified maize (MON810) and the immune response to parasitization by Campoletis aff. flavicincta (Hymenoptera: Ichneumonidae)
Fitness costs of insect resistance to insecticides can be exploited by integrating other pest control strategies in Integrated Pest Management (IPM) programs. The objective of this research was to evaluate the existence of fitness costs associated with the resistance of Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) to the pyrethroid insecticid
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/05/2012
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8. Indução de resistência em feijoeiro (Phaseolus vulgaris) por acibenzolar-S-metil contra Xanthomonas axonopodis pv. phaseoli: parâmetros bioquímicos e da produção / Induced resistance in bean plants (Phaseolus vulgaris) by acibenzolar-S-methyl against Xanthomonas axonopodis pv. phaseoli: biochemical and production parameters
The common bacterial blight disease of bean caused by the bacterium Xanthomonnas axonopodis pv. phaseoli, occurs mainly in hot and humid regions of the globe. The induced resistance consists in the increase of the plant resistance by the use of external agents, without any change in its genome. The objectives of this study were: (i) to verify the induction o
Publicado em: 2010
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9. Sensibilidade a fungicidas e adaptabilidade de Lasiodiplodia theobromae patogênico ao mamão
Application of fungicide is the main measure of management to stem-end rot and there is no information on the sensitivity and on the fitness costs arising from the reduction in sensitivity of its causal agent, Lasiodiplodia theobromae. One hundred and twenty monosporic isolates collected in producing areas of the Northeast region of Brazil, were divided into
Publicado em: 2009
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10. Resistência fisiológica e comportamental de populações de Sitophilus zeamais à permetrina, esfenvalerato e esfenvalerato + fenitrotiona / Physiological and behavioral resistance of populations of Sitophilus zeamais to permethrin, esfenvalerate and esfenvalerate + fenitrothion
The maize weevil, Sitophilus zeamais Motschulsky, 1855 (Coleoptera: Curculionidae) is considered the main pest of stored maize in Brazil and its control is achieved mainly by insecticides. The massive and intensive use of these compounds may lead to selection of resistant populations and consequently compromise the control efficacy of this insect pest in Bra
Publicado em: 2009
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11. Costs and benefits of ant attendance to the extrafloral nectaries of Crotalaria pallida (Fabaceae) / Custos e beneficios da visita de formigas aos nectarios extraflorais de Crotalaria pallida (Fabaceae)
Ants may have a positive or negative effect on the fitness of the plants with which they interact, depending on its relationship with herbivores, pollinators and seed dispersers. A remarkable characteristic of the interactions between ants and plants is the high frequency with which they are mutualistic. The supposed benefit of these interactions is that the
Publicado em: 2008
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12. Teste de fatores que afetam o tamanho da ninhada de Elaenia chiriquensis (Tyrannidae) do Cerrado do Brasil Central
The study of the selective pressures that determine clutch size is essential to understand lifehistory strategies. Brood manipulation studies are the standard tools for testing the influence of food availability, nest predation risk and increasing parental effort on limitation of clutch size. In order to assess the relative importance of food limitation to t
Publicado em: 2008