Guadalupe Cascallares

Postdoctoral Researcher

“Centro Interdisciplinario de Neurociencia de Valparaíso”.
Research Area: Biological clocks.
Neurogenetics of Behavior and Development in Drosophila melanogaster laboratory, Professor John Ewer
Ph.D. in Physics, Instituto Balseiro, Argentina (2017).
Graduate in Physics, Universidad Nacional de Mar del Plata, Argentina (2012)

E-mail: guadalupe.cascallares at cinv.cl, mgcascallares at gmail.com
Teléfono: (56)-(32)-2508053
Fax: (56)-(32)-2344019
Address: Centro Interdisciplinario de Neurociencia de Valparaíso.
Facultad de Ciencias, Universidad de Valparaíso.
Gran Bretaña 1111. Playa Ancha. Valparaíso. Chile.

Research statement:

As an adaptation to cyclic environmental changes many species present behavioural and physiological rhythms with a period close to 24 h, known as circadian rhythms. In fruit flies Drosophila melanogaster, the timing of emergence of adults from the pupal case is controlled by the circadian clock. Every day, adults emerge in large numbers within an 8-10 h (hour) interval, starting 1-2 h prior to “dawn”, when the humidity in the environment is high and the temperature is low, presumably in order to maximize a fly’s chances of survival. Since the emergence of the adult fly is the culmination of the developmental process of metamorphosis, an open question is the mechanism by which the circadian clock imposes the “gate”. Currently I am developing computational approaches to determine how the clock controls the timecourse of metamorphosis based on image analysis.

Publications:

G. Cascallares, A. Sánchez, M. Dell’Erba, and G. Izús“Noise-sustained synchronization between electrically coupled FitzHugh–Nagumo networks”, Physica A, doi:10.1016/j.physa.2015.03.016 (2015)

G. Cascallares and P. Gleiser“What season suits you best? Seasonal light changes and cyanobacterial competition.”  Papers in Physics, doi: http://dx.doi.org/10.4279/PIP.070005 (2015)

G. Cascallares and P. Gleiser. “Clustering and phase synchronization in populations of coupled phase oscillators” Eur. Phys J. B, vol 88, (2015)

M. Dell’Erba, G. Cascallares, A. Sánchez and G. Izús. “Noise-sustained synchronization in a FitzHugh-Nagumo ring with electrical phase-repulsive coupling”,  Eur. Phys. J. B, 87:82, (2014)