Early Development of Oral, Olfactory and Adenohypophyseal Structures of Agnathans and Its Evolutionary Implications

  • Aubrey Gorbman
  • Arnold Tamarin
Part of the NATO ASI Series book series (NSSA, volume 103)

Abstract

Ideas concerning the earliest evolution of the vertebrate head must be based on paleontological evidence as well as on adult and embryonic morphology of present day agnathans. Unfortunately, paleontological evidence for evolution of certain soft structures of the head is not really available, so that embryonic development of such structures is often the basis for speculation in this field (e.g. Stensiö, 1968). Here, we would like to address one phase of this problem; the formation of the agnathan adenohypophysis and some contiguous structures from the nasopharyngeal canal, and the presumed homology of the nasopharyngeal canal with the adenohypophyseal anlage, or Rathke’s pouch, of higher vertebrates.

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Literature cited

  1. BARRINGTON, E.J.W. 1975. General and comparative endocrinology. Oxford University Press. London. pp. 88.Google Scholar
  2. CONEL, J.L. 1929. The development of the brain of Bdellostoma stouti. I. External growth changes. J. comp. Neurol. 47: 343–403.CrossRefGoogle Scholar
  3. CONEL, J.L. 1931. The development of the brain of Bdellostoma stouti. II. Internal growth changes. J. comp. Neurol. 47: 343–403.CrossRefGoogle Scholar
  4. FERNHOLM, B. 1969. A third embryo of Myxine. Consideration on hypophysial ontogeny and phylogeny. Acta Zool. 50: 169–177.CrossRefGoogle Scholar
  5. GORBMAN, A. 1983. Early development of the hagfish pituitary gland: evidence for the endodermal origin of the adenohypophysis. Amer. Zool. 23: 639–654.Google Scholar
  6. GORBMAN, A. and A. TAMARIN. 1985. Head development in relation to hypophysial development in a myxinoid, Eptatretus and a petromyzontid, Petromyzon. In Yoshimura, F., and A. Gorbman [eds.] The pars distalis: structure, function and regulation. Elsevier, Amsterdam.Google Scholar
  7. HARDISTY, M.W. 1979. Biology of the cyclostomes. Chapman and Hall, London.Google Scholar
  8. HEINTZ, A. 1963. Phylogenetic aspects of myxinoids. In BRODAI, A., and R. FäNGE [eds.] The biology of Myxine. Universitetsforlaget, Oslo.Google Scholar
  9. HOLMGREN, N. 1946. On two embryos of Myxine glutinosa. Acta Zool. 27: 1–90.CrossRefGoogle Scholar
  10. KUPFFER, C. VON. 1894. Studien zur vergleichenden Entwicklungsgeschichte des Kopfes der Kranioten. II. Die Entwicklung des Kopfes von Petromyzon planeri. Munchen und Leipzig.Google Scholar
  11. KUPFFER, C. VON. 1899. Zur Kopfentwicklung von Bdellostoma. Sitzungsber. Gesellsch. Morph. Physiol. (München) 15: 21–35.Google Scholar
  12. KUPFFER, C. VON. 1906. Die Morphogenie des Centralnervensystems. In Handb. verg. exper. Entwicklungslehre Wirbeltiere. Bd. 2. Oskar Hertwig, Jena.Google Scholar
  13. LEACH, W.J. 1951. The hypophysis of lampreys in relation to the nasal apparatus. J. Morph. 89: 217–246.CrossRefGoogle Scholar
  14. PASTEELS, J. 1958. Developpement des Agnathes. pp. 106–144 In GRASSE, M. [ed.] Traité de Zoologie, vol. 13. Masson, Paris.Google Scholar
  15. PIAVIS, G.W. 1971. Embryology. In HARDISTY, M.W., and I.C. POTTER [eds.] The biology of lampreys. Academic Press, New York.Google Scholar
  16. PURVIS, H.A. 1980. Effects of temperature on metamorphosis and the age and length at metamorphosis in Sea Lamprey (Petromyzon marinus) in the Great Lakes. Can. J. Fish. Aquat. Sci. 37: 1827–1834.CrossRefGoogle Scholar
  17. SHOLDICE, J.A., and D.B. MCMILLAN. 1985. Pituitary cysts in the sea lamprey of the Great Lakes, Petromyzon marinus. Gen. comp. Endocrinol. 57: 135–149.PubMedCrossRefGoogle Scholar
  18. STENSIö, E. 1968. The cyclostomes with special reference to the diphyletic origin of the Petromyzontidae and Myxinoidea. In ØRVIG, T. [ed.] Current problems of lower vertebrate phylogeny. Almquist and Wiksell, Stockholm.Google Scholar
  19. STOCKARD, C.R. 1906a. The development of the mouth and gills of Bdellostoma stouti. Amer. J. Anat. 5: 481–517.CrossRefGoogle Scholar
  20. STOCKARD, C.R. 1906b. The development of the thyroid gland in Bdellostoma stouti. Anat. Anz. 29: 91–99.Google Scholar

Copyright information

© Plenum Press, New York 1985

Authors and Affiliations

  • Aubrey Gorbman
    • 1
  • Arnold Tamarin
    • 2
    • 3
  1. 1.Department of ZoologyUniversity of WashingtonSeattleUSA
  2. 2.Department of Biological StructureUniversity of WashingtonSeattleUSA
  3. 3.Department of Oral BiologyUniversity of WashingtonSeattleUSA

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