Molecular cloning and characterization of the clock gene period2 in the testis of lizard Podarcis sicula and its expression during seasonal reproductive cycle

Our preliminary results cannot clearly demonstrate the involvement of per2 gene in seasonal reproductive cycle of male lizard P. sicula, but its presence in the testis may suggest a role of this gene during spermatogenesis. Besides, our work can provide numerous starting points to clarify the role of per2 during seasonal reproductive cycle.