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L'encéphalisation chez la myxine (Myxine glutinosa L.): analyse quantifiée des principales subdivisions encéphaliques = Encephalisation of Myxine glutinosa L.: quantified analysis of the volume of the main subdivisions of the brain
Platel, R.; Delfini, Ch. (1981). L'encéphalisation chez la myxine (Myxine glutinosa L.): analyse quantifiée des principales subdivisions encéphaliques = Encephalisation of Myxine glutinosa L.: quantified analysis of the volume of the main subdivisions of the brain. Cah. Biol. Mar. 22(4): 407-430
In: Cahiers de Biologie Marine. Station Biologique de Roscoff: Paris. ISSN 0007-9723, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Platel, R.
  • Delfini, Ch.

Abstract
    This study has been carried out on a sample of 22 individuals (19 adults, 3 juveniles) of Myxine glutinosa L. (Cyclostomata - Myxinoidea). The knowledge of the brain weight (S) leads to determination of the brain-body weight coefficient of allometry belonging to this species. Its numerical value (0,402) is discussed in comparison with those previously known for a lot of various species of Vertebrates; it gives to the Hagfish a surprising localisation in our classification which decreases from Chondrichthyes (0,566) to Mammals (0.23). The second part of the study is a detailed analysis of the volume of the main subidivisions of the brain (i.e. olfactory bulbs, cerebral hemispheres, diencephalon, tectum mesencephalicum + medulla oblongata).

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