IntroductionThe catecholaminergic component of the brain-pituitary-gonadal axis. which mediates the influence of external and internal stimuli on the central nervous system and gonad development in vertebrates. is largely unexplored in Chondrichthyes. We considered Scyliorhinus canicula (L. https://parisnaturalfoodes.shop/product-category/sf-maple-syrup/