This chapter reviews the information available in the scientific literature on the effects on the
different groups of reptiles of major pollutants of anthropogenic origin, main pesticides …

… parabens is regulated by the EU Cosmetic Regulation, which … weak in the testes of treated
rats, compared with controls, and … defined tracts extending along the axes of the Sertoli cells …

… control of spermatogenesis, the process by which immature … this event by mechanisms in
which aromatase, 17βestradiol (… T and its metabolite 5α-dihydrotestosterone (5αDHT) arise as …

… androgens (testosterone and 5αdihydrotestosterone) mediated by … and maturation of Sertoli
cells, germ cell development, … terjadinya deplesi sel spermatogonium juvenile, tikus mutan …

… by germ line cells and the somatic Sertoli cells (SCs), which … in the immature SCs and
hormonally regulated by FSH [75]. … In the mammalian testis, oestrogens such as 17βestradiol, …

This thesis is dedicated to the analysis of singing behavior and the neural structures that
underlie its learning and production in a seasonal songbird species, the domesticated canary (…