Thesiss

Secondary contact occurs when two previously isolated lineages come back into contact after generations of independent selection and evolution. The processes that occur at the onset of secondary contact determine whether populations fuse, form a stable hybrid zone, or undergo sp…

All environments in nature fluctuate, and a globally common mode of fluctuation is cyclical: daily, tidal, seasonal, and even decadal. Organisms must adapt the scheduling of their life cycles-or 'life-histories'-to fit the cycles of the physical environments in which they reside…