Search results for "compensator"
showing 10 items of 59 documents
Larval intraspecific competition for food in the European grapevine moth Lobesia botrana.
2014
AbstractEffective pest management with lower amounts of pesticides relies on accurate prediction of insect pest growth rates. Knowledge of the factors governing this trait and the resulting fitness of individuals is thus necessary to refine predictions and make suitable decisions in crop protection. The European grapevine moth, Lobesia botrana, the major pest of grapes in Europe, is responsible for huge economic losses. Larvae very rarely leave the grape bunch on which they were oviposited and thus cannot avoid intraspecific competition. In this study, we determined the impact of intraspecific competition during the larval stage on development and adult fitness in this species. This was tes…
Increased susceptibility to oxidative damage as a cost of accelerated somatic growth in zebra finches.
2007
1. Most animals do not grow at their maximal rate. This might appear puzzling because the early attainment of a large body size incurs several selective benefits, such as reduced risk of predation and earlier reproductive output. Several hypotheses have been suggested to explain this paradox. Among them, the cost due to high levels of oxidative stress, as the consequence of sustained metabolic activity during growth, has been put forward.
Different emergence phenology of European grapevine moth (Lobesia botrana, Lepidoptera: Tortricidae) on six varieties of grapes.
2014
AbstractThe phenology of insect emergence affects reproductive success and is especially critical in short-lived species. An increasing number of studies have documented the effects of thermal and other climatic variations and of unpredictable habitats on the timing of adult insect emergence within and between populations and years. Numerous interacting factors may affect the phenology of adult emergence. Host-plant quality and availability is a key factor that has been largely neglected in studies of the phenology of phytophagous insects. The purpose of this study was to determine the effect of host plant characteristics on the rate of larval growth and the pattern of emergence in a wild p…
Evolutionary Changes after Translational Challenges Imposed by Horizontal Gene Transfer
2019
International audience; Genes acquired by horizontal gene transfer (HGT) may provide the recipient organism with potentially new functions, but proper expression level and integration of the transferred genes in the novel environment are not granted. Notably, transferred genes can differ from the receiving genome in codon usage preferences, leading to impaired translation and reduced functionality. Here, we characterize the genomic and proteomic changes undergone during experimental evolution of Escherichia coli after HGT of three synonymous versions, presenting very different codon usage preference, of an antibiotic resistance gene. The experimental evolution was conducted with and without…
Engineered Functional Redundancy Relaxes Selective Constraints upon Endogenous Genes in Viral RNA Genomes
2018
Functional redundancy, understood as the functional overlap of different genes, is a double-edge sword. At the one side, it is thought to serve as a robustness mechanism that buffers the deleterious effect of mutations hitting one of the redundant copies, thus resulting in pseudogenization. At the other side, it is considered as a source of genetic and functional innovation. In any case, genetically redundant genes are expected to show an acceleration in the rate of molecular evolution. Here, we tackle the role of functional redundancy in viral RNA genomes. To this end, we have evaluated the rates of compensatory evolution for deleterious mutations affecting an essential function, the suppr…
La temporalidad de la pensión compensatoria en la jurisprudencia del tribunal supremo
2021
En el presente trabajo se estudian los criterios jurisprudenciales en orden a determinar si una pensión compensatoria debe tener carácter indefinido o temporal.
Sobre el desequilibrio económico en materia de pensión compensatoria : Algunas novedades jurisprudenciales. Comentario a las ssts núm. 495/2019, de 2…
2021
This paper analyses some jurisprudential novelties about the economic imbalance that give the right to receive the compensatory allowance in case of separation or divorce.
: FORMAL SPOUSES ALIMONY’S AND “COMPENSATORY ALLOWANCE” (PRESTATIONCOMPENSATOIRE) IN FRENCH LEGISATION
2016
International audience; PALABRAS CLAVE: Conséquences économiques du divorce, pension alimentaire entre ex-époux, prestation compensatoire. ABSTRACT: Since 1975, formal spouses alimony's became "compensatory allowance" (prestation compensatoire). This allowance is usually a lump sum form (90%), given by the divorced husband (90%) and concerning long terme marriages (15 years in average). But case-law and academic writings reflect uncertainties: there is no consensus about reasons why for compensatory allowance. Such uncertainties make the appropriate quantification of formal spousal allowance harder to assess.; RESUMEN: Depuis 1975, la pension alimentaire entre ex-époux est devenue une prest…
Sistema educativo, formación profesional y agricultura : Breves apuntes de una revisión y estado de la cuestión
1999
En un mundo laboral tecnológica y organizativamente cambiante, una adecuada formación del capital humano resulta imprescindible para hacer frente al nuevo entorno competitivo; de ahí el nuevo posicionamiento de la Formación Profesional en el Sistema Educativo. El artículo defiende la necesidad, en el marco de implantación de la LOGSE, de dotar al hábitat rural de un adecuado sistema de FP, evitando su discriminación hacia fórmulas de tipo no reglado, como ha sido habitual hasta la fecha. In a new international competitive order, it is necessary an adequate human capital formation. In this context Vocational Training acquire a new perspective inside education system. We plead to provide rura…
Educación compensatoria : aprendizaje temprano, éxito posterior : (II: el Carolina Abecedarian Project)
2014
Este es un estudio de revisión en el que se analizan las investigaciones que evalúan los efectos a lo largo del tiempo del programa de educacióntemprano Abecedarian Project (ABC). El ABC es un programa compensador preventivo de 0-5 años y entresacados de madres de alto riesgo. El grupo experimental (E) recibe tratamiento preescolar intensivo, no el control (C). Se prolongó escolarmente hasta los 8 años, subdividiéndose ambos grupos: Dos -EE y CE- recibieron tratamiento intensivo; otros (EC y CC) convencional. Fueron medidos hasta los 21. Resultados: Los jóvenes adultos, tratados preescolarmente, mejoraron en rendimiento mental, lector y matemático; alcanzaron mayores instrucciones y presenc…