Control of pars intermedia activity in late embryos of the spiny dogfish, Squalus acanthias

Abstract

Nearly full-term yolk sac embryos of Squalus acanthias exhibit background adaptation with melanophore responses that are dependent on the pituitary pars intermedia. Whereas the intermedia cells of other Elasmobranchs are doubly innervated by adrenergic and peptidergic fibres, probably only a small adrenergic innervation is present in Squalus. Still, the… (More)
DOI: 10.1007/BF00221356

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