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Application of deterministic model of isothermals for population dynamics of Synthesiomyia nudiseta (Diptera, Muscidae) BJB
ALMEIDA,J. R. de; OLIVEIRA,S. G. de; BORGES,I. L.; D'ALMEIDA,J. M..
The isothermal deterministic model adherence was studied to evaluate the population dinamic of Synthesiomyia nudiseta (Diptera, Muscidae). The linear form of equation obtained for the experiments in the several phases, were for Egg: 1/D = -0.18 + 0.02 . T; Larva: 1/D = -0.028 + 0.01. T; Pupa: 1/D = -0.069 + 0.01 . T; and Adult: 1/D = -0.4178 + 0.02 . T. In function of temperature, S. nudiseta can present from 4.18 to 8.95 and from 4.91 to 8.99 generations per year, when calculated through the equations of development and through the simulations, respectively. And the higher the temperature the larger the generation number. Through variance analysis it was verified the significance for the regression equations in relation to the annual generation number...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Deterministic model; Population dynamics; Synthesiomyia nudiseta; Diptera.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082001000100018
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Modelization of the regulation of protein synthesis following fertilization in sea urchin shows requirement of two processes: a destabilization of elF4E:4E-BP complex and a great stimulation of the 4E-BP-degradation mechanism, both rapamycin-sensitive ArchiMer
Laurent, Sebastien; Richard, Adrien; Mulner-lorillon, Odile; Morales, Julia; Flament, Didier; Glippa, Virginie; Bourdon, Jeremie; Gosselin, Pauline; Siegel, Anne; Cormier, Patrick; Belle, Robert.
Fertilization of sea urchin eggs involves an increase in protein synthesis associated with a decrease in the amount of the translation initiation inhibitor 4E-BP A highly simple reaction model for the regulation of protein synthesis was built and was used to simulate the physiological changes in the total 4E-BP amount observed during time after fertilization. Our study evidenced that two changes occurring at fertilization are necessary to fit with experimental data. The first change was an 8-fold increase in the dissociation parameter (koffi) of the elF4E:4E-BP complex. The second was an important 32.5-fold activation of the degradation mechanism of the protein 4E-BP Additionally, the changes in both processes should occur in 5 min time interval...
Tipo: Text Palavras-chave: Translational control; Sea urchin embryos; Mechanisms of fertilization; Deterministic model; Translation simulation.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00382/49341/49731.pdf
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