Summary
A brief description of the early embryonic development of the circulatory system in a representative of the coleoid cephalopods (Octopus vulgaris) is presented as an example of the rather uniform pattern observed at the outset of organogenesis. The role of the outer yolk sac both in morphogenesis and in the physiology of the embryo is emphasized. On the basis of recent observations reported in the literature, a preliminary comparison with the yolk sac ofNautilus is made, which in particular allows one to assess the relative importance of embryo size and bauplan constraints, respectively.
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v. Boletzky, S. Ontogenetic and phylogenetic aspects of the cephalopod circulatory system. Experientia 43, 478–483 (1987). https://doi.org/10.1007/BF02143575
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DOI: https://doi.org/10.1007/BF02143575