Poliploidía En Moluscos De Importancia Comercial. A Review

Polyploidy is a biotechnology that in the last decade had provided with an improvement method for mollusks in aquaculture. Triploids have three sets of chromosomes rather than the two carried by diploids. The third set has an effect on chromosomes synapsis, producing sterility during reproduction. That sterility is the most accepted cause for the better growth seen in triploids. Artificial induction to triploidy has some problems, which can be solved by the existence of tetraploids, which could be mated to diploids to produce biological triploids. Control strategies based on prevention of disease and methods that slow the spread of such diseases. Therefore, proper management of diseases affecting the tomato crop, knowledge and understanding of the diagnosis and its infectious cycle is vital and to establish effective control measures.However, the literature is limited when it comes to auscultating information related with the poliploidía in mollusks, it´s origin and the multiple biotechnologies that develop contemporary. This study was conducted to assess and meet the trend of existing research on polyploidy in commercially important shellfissh

Impact of cross-section uncertainties on supernova neutrino spectral parameter fitting in the Deep Underground Neutrino Experiment

International audienceA primary goal of the upcoming Deep Underground Neutrino Experiment (DUNE) is to measure the O(10)  MeV neutrinos produced by a Galactic core-collapse supernova if one should occur during the lifetime of the experiment. The liquid-argon-based detectors planned for DUNE are expected to be uniquely sensitive to the νe component of the supernova flux, enabling a wide variety of physics and astrophysics measurements. A key requirement for a correct interpretation of these measurements is a good understanding of the energy-dependent total cross section σ(Eν) for charged-current νe absorption on argon. In the context of a simulated extraction of supernova νe spectral parameters from a toy analysis, we investigate the impact of σ(Eν) modeling uncertainties on DUNE’s supernova neutrino physics sensitivity for the first time. We find that the currently large theoretical uncertainties on σ(Eν) must be substantially reduced before the νe flux parameters can be extracted reliably; in the absence of external constraints, a measurement of the integrated neutrino luminosity with less than 10% bias with DUNE requires σ(Eν) to be known to about 5%. The neutrino spectral shape parameters can be known to better than 10% for a 20% uncertainty on the cross-section scale, although they will be sensitive to uncertainties on the shape of σ(Eν). A direct measurement of low-energy νe-argon scattering would be invaluable for improving the theoretical precision to the needed level