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Helgoländer Meeresuntersuchungen

, Volume 50, Issue 1, pp 25–36 | Cite as

The eyes of a “nobody”,Anoplodactylus petiolatus (Pantopoda; Anoplodactylidae)

  • M. Heß
  • R. R. Melzer
  • U. Smola
Article
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Abstract

The fine structure of the four ocelli ofAnoplodactylus petiolatus was examined using serial longitudinal and transversal sections of the eye hill. Each pigment cup ocellus is composed of a (planconvex) cuticular lens, lens forming hypodermal cells, inverse retinula cells with latticed rhabdom and surrounding tapetum and pigment layers. Within the retinula cells a distal “vitreous” zone, a nucleus zone and a proximal rhabdomeric zone can be distinguished. Retinula cell axons originate proximally. The tapetum cells contain several layers of reflecting crystals. Distally, they have a common microvillous region. The intraretinal “vitreous” zone contains glycogen-like particles in the centre and rough ER in the periphery. Contrary to other Pantopoda vitreous cells, a praeretinal membrane and a vertical lens groove have not been observed inAnoplodactylus. While the presence of four (median) ocelli appears to be a primitive characteristic, the inverse orientation of the retinula cells in combination with a tapetum lucidum represents a highly derived characteristic among arthropod median eyes.

Keywords

Waste Water Transversal Section Tapetum Cell Pigment Layer Cell Axon 
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Literature Cited

  1. Bouvier, E. L., 1913. Pycnogonides du “Pourqui pas?”. — Deuxième expédition antarctique française (1908–1910). Paris, 69 pp.Google Scholar
  2. Davenport, J., Blackstock, N., Davies, D. A. & Yarrington, M., 1987. Observations on the physiology and integumentary structure of the antarctic pycnogonidDecolopoda australis. — J. Zool. Lond.211, 451–465.Google Scholar
  3. Elliot, P., King, P. E., Morgan, C. J., Pugh, P. J. A., Smith, A. & Wheeler, S. L. A., 1990. Chelicerata, Uniramia, Tardigrada. In: The marine fauna of the British isles and NW Europe. Ed. by D. J. Hayward & J. S. Ryland. Clarendon Press, Oxford,1, 553–627.Google Scholar
  4. Fahrenbach, W. H., 1964. The fine structure of a nauplius eye. — Z. Zellforsch. mikrosk. Anat.62, 182–197.PubMedGoogle Scholar
  5. Franke, W. W., Krien, S. & Brown, R. M., 1969. Simultaneous glutaraldehyde-osmium tetroxide fixation with postosmication. — Histochemie19, 162–164.CrossRefPubMedGoogle Scholar
  6. Fry, W. G., 1978. A classification within the pycnogonids. — Zool. J. Linn. Soc.63, 35–58.Google Scholar
  7. Grenacher, H., 1879. Untersuchungen über das Sehorgan der Arthropoden, insbesondere der Spinnen, Insekten und Crustaceen. Van den Hoek & Ruprecht, Göttingen, 188 pp.Google Scholar
  8. Hanstrøm, B., 1926. Eine genetische Studie über die Augen und Sehzentren von Turbellarien, Anneliden und Arthropoden (Trilobiten, Xiphosuren, Eurypteriden, Arachnoiden, Myriapoden, Crustaceen und Insekten). — K. Svenska Vetensk. Akad. Handl.4 (1), 1–176.Google Scholar
  9. Hanstrøm, B., 1928. Vergleichende Anatomie des Nervensystems der wirbellosen Tiere. Springer, Berlin, 627 pp.Google Scholar
  10. Helfer, H. & Schlottke, E., 1935. Pantopoda. — Bronns Kl. Ordn. Tierreichs5 (4, 2), 1–314Google Scholar
  11. Homann H., 1971. Die Augen der Araneae. Anatomie, Ontogenie und ihre Bedeutung für die Systematik. — Z. Morph. Tiere69, 201–272.CrossRefGoogle Scholar
  12. Jarvis, J. H. & King, P. E., 1973. Ultrastructure of the photoreceptors in the pycnogonid species,Nymphon gracile (Leach), andPycnogonum litorale (Ström). — Mar. Behav. Physiol.2, 1–13.Google Scholar
  13. Melamed, J. & Trujillo-Cenóz, O., 1966. The fine structure of the visual system ofLycosa (Araneae). — Z. Zellforsch. mikrosk. Anat.74, 12–31.CrossRefPubMedGoogle Scholar
  14. Morgan, Th. H., 1891a. The relationships of the sea spiders. — Biol. Lect. mar. biol. Lab. Woods Hole,1891, 142–167.Google Scholar
  15. Morgan, Th. H., 1891b. Embryology and phylogeny of pycnogonids. — Jl R. microsc. Soc.1891, 341–342.Google Scholar
  16. Mouze, M., 1984. Morphologie et développement des yeux simples et composés des insèctes. In: Photoreception and vision in invertebrates. Ed. by M. A. Ali. Plenum Press, New York, 661–698.Google Scholar
  17. Muñoz-Cuevas, A., 1984. Photoreceptor structures and vision in arachnids and myriapods. In: Photoreception and vision in invertebrates. Ed. by M. A. Ali. Plenum Press, New York, 335–399.Google Scholar
  18. Nilsson, D.-E., 1990. From cornea to retinal image in invertebrate eyes. — Trends Neurosci.13, 55–64.PubMedGoogle Scholar
  19. Paulus, H. F., 1979. Eye structure and the monophyly of the Arthropoda. In: Arthropod phylogeny. Ed. by A. P. Gupta. Van Nostrand Reinhold, New York, 299–384.Google Scholar
  20. Richter, S., 1982. Zur Ultrastruktur der seitlichen Sinnesorgane am Augenhügel vonAnoplodactylus pygmaeus (Pycnogonida). — Helgoländer Meeresunters.35, 465–478.CrossRefGoogle Scholar
  21. Sharov, A. G., 1966. Basic arthropodan stock. Pergamon Press, Oxford, 28–31.Google Scholar
  22. Sokolow, J., 1911. Über den Bau der Pantopodenaugen. — Z. wiss. Zool.98, 339–380, Taf. 17, 18.Google Scholar
  23. Staples, D. A. & Watson, J. E., 1987. Associations between pycnogonids and hydroids. In: Modern trends in the systematics, ecology and evolution of hydroids and hydromedusae. Ed. by J. Bouillon. Clarendon Press, Oxford, 215–226.Google Scholar
  24. Tomaschko, K.-H., 1992. Die Aufnahme von Alanin durch das Integument vonPycnogonum litorale (Arthropoda, Pantopoda). — Verh. dt. zool. Ges.85, 46.Google Scholar
  25. Tomaschko, K.-H. & Brückmann, D., 1990. Das Exkretionsorgan der Pantopoden. — Verh. dt. zool. Ges.83, 559.Google Scholar
  26. Weygoldt, P. & Paulus, H. F., 1979a. Untersuchungen zur Morphologie, Taxonomie und Phylogenie der Chelicerata. I. Morphologische Untersuchungen. — Z. zool. Syst. Evolutionsforsch.17, 85–116.Google Scholar
  27. Weygoldt, P. & Paulus, H. F., 1979b. Untersuchungen zur Morphologie, Taxonomie und Phylogenie der Chelicerata. II. Cladogramme und die Entfaltung der Chelicerate. — Z. zool. Syst. Evolutionsforsch.17, 177–200.Google Scholar
  28. Winter, G., 1980. Beiträge zur Morphologie und Embryologie des vorderen Körperabschnitts (Cephalosoma) der Pantopoda Gerstaecker, 1863. I. Entstehung und Struktur des Zentralnerven-systems. — Z. zool. Syst. Evolutionsforsch.18, 27–61.Google Scholar
  29. Wirén, E., 1918. Zur Morphologie und Phylogenie der Pantopoden. — Zool. Bidr. Uppsala6, 41–181, Taf. 9–16.Google Scholar

Copyright information

© Biologische Anstalt Helgoland 1996

Authors and Affiliations

  • M. Heß
    • 1
  • R. R. Melzer
    • 1
  • U. Smola
    • 1
  1. 1.Zoologisches Institut der UniversitätMünchenGermany

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