  Neutrinos are produced in several neutrino nuclear reactions of the
proton-proton chain and carbon-nitrogen-oxygen cycle that take place at
different radius of the Sun's core. Hence, measurements of solar neutrino
fluxes provide a precise determination of the local temperature. The
accumulation of non-annihilating light dark matter particles (with masses
between 5 GeV and 16 GeV in the Sun produces a change in the local solar
structure, namely, a decrease in the central temperature of a few percent. This
variation depends on the properties of the dark matter particles, such as the
mass of the particle and its spin-independent scattering cross-section on
baryon-nuclei, specifically, the scattering with helium, oxygen, and nitrogen
among other heavy elements. This temperature effect can be measured in almost
all solar neutrino fluxes. In particular, by comparing the neutrino fluxes
generated by stellar models with current observations, namely 8B neutrino
fluxes, we find that non-annihilating dark matter particles with a mass smaller
than 10 GeV and a spin-independent scattering cross-section with heavy
baryon-nuclei larger than 3 x 10^{-37} cm^-2 produce a variation in the 8B
neutrino fluxes that would be in conflict with current measurements.
