Advertisement

Hydrobiologia

, Volume 546, Issue 1, pp 213–221 | Cite as

Do Rotifer Jaws Grow After Hatching?

  • Diego Fontaneto
  • Giulio Melone
Article

Abstract

The hard articulated jaws of some pseudocoelomate metazoans were recently used in reconstructing their phylogenetic relationships, but we still do not know if these structures could change in size and shape during the life of individuals, and experimental data are lacking on their post-embryonic development. Rotifers are one of the groups in which hard articulated jaws, called trophi, are well known, and are widely used taxonomically. Here we report on SEM study of trophi of rotifers of different ages, to determine if the trophi structures change in shape and/or in size during post-embryonic development. We used linear measurements and geometric morphometrics analyses from scanning electron microscopic pictures of trophi of Cupelopagis vorax, Dicranophorus forcipatus, Macrotrachela quadricornifera, Notommata glyphura, Rotaria macrura, R. neptunoida, and R. tardigrada. Results for these species show that trophi do not change after hatching, either in size or in shape. In contrast, data on Asplanchna priodonta reveal trophi growth after hatching.

Keywords

Rotifera Bdelloidea Monogononta trophi post-embryonic development geometric morphometrics size 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Adams, D. C., Funk, D. J. 1997Morphometric inferences on sibling species and sexual dimorphism in Neochlamisus bebbianae leaf beetles: multivariate applications of the thin-plate splineSystematic Biology46180194Google Scholar
  2. Ahlrichs, W. H. 1997Epidermal ultrastructure of Seison nebaliae and Seison annulatus, and a comparison of epidermal structures within GnathiferaZoomorphology1174148CrossRefGoogle Scholar
  3. Badino, G., Robotti, C. 1975Selection in parthenogenetic lines of Asplanchna sieboldi (Leydig) 1854 (Rotatoria)Experientia31298299CrossRefPubMedGoogle Scholar
  4. Bookstein, F. L., 2000. Morphometrics. In {\sl Encyclopedia of Life Sciences,} MacMillan, {\tt www.els.net}Google Scholar
  5. Cardini, A., Tongiorgi, P. 2003Yellow-bellied marmots (Marmota flaviventris) ‘in the shape space’ (Rodentia, Sciuridae): sexual dimorphism, growth and allometry of the mandibleZoomorphology1221123Google Scholar
  6. De Smet, W. H., Pourriot, R. 1997Rotifera. Vol. 5: The Dicranophoridae and the Ituridae. Guides to the identification of the microinvertebrates of the continental waters of the world, Vol. 12SPB Academic PublishingAmsterdam 344Google Scholar
  7. De Smet, W. H. 1998Preparation of rotifer trophi for light and scanning electron microscopyHydrobiologia388117121CrossRefGoogle Scholar
  8. De Smet, W. H. 2002A new record of Limnognathia maerski Kristensen & Funch, 2000 (Micrognathozoa) from the subantarctic Crozet Islands, with redescriptions of the trophiJournal of Zoology, London258381393Google Scholar
  9. Donner, J. 1965Ordnung Bdelloidea (Rotifera, Rädertiere)Akademie VerlagBerlin297Google Scholar
  10. Fontaneto, D., Melone, G. 2003Redescription of Pleuretra hystrix, an endemic alpine bdelloid rotiferHydrobiologia497153160CrossRefGoogle Scholar
  11. Fontaneto, D., Melone, G., Wallace, R. L. 2003Morphology of Floscularia ringens (Rotifera Monogononta) from egg to adultInvertebrate Biology122231240Google Scholar
  12. Fontaneto, D., Melone, G., Cardini, A. 2004Shape diversity in the trophi of different species of Rotaria (Rotifera, Bdelloidea): a geometric morphometric studyItalian Journal of Zoology716372Google Scholar
  13. Gilbert, J. J. 2001Spine development in Brachionus quadridentatus from an Australian billabong: genetic variation and induction by AsplanchnaHydrobiologia4461928CrossRefGoogle Scholar
  14. Gosse, P. H. 1856On the structure, functions and homologies of the manducatory organs in the class RotiferaPhilosophical Transactions of the Royal Society of London146419452Google Scholar
  15. Josè de Paggi, S. 2002 Family AsplanchnidaeNogrady, T.Segers, H. eds. Rotifera. Vol. 6: Aspelianchnidae, Gastropodidae, Lindiidae, Microcodidae, Synchaetidae, Trochosphaeridae and Filinia. Guides to the identification of the microinvertebrates of the continental waters of the world, VolBackhuys PublishersLeiden 124Google Scholar
  16. Klingenberg, C. P., McIntyre, G. S., Zaklan, S. D. 1998Left-right asymmetry of fly wings and the evolution of body axesProceedings of the Royal Society of London Series B-Biological Sciences26512551259CrossRefGoogle Scholar
  17. Klusemann, J., Kleinow, W., Peters, W. 1990The hard parts (trophi) of the rotifer mastax do contain chitin: evidence from studies on Brachionus plicatilisHistochemistry94277283CrossRefPubMedGoogle Scholar
  18. Koste, W., Shiel, R. J. 1980Preliminary remarks on the rotifer fauna of Australia (Notogea)Hydrobiologia73221227CrossRefGoogle Scholar
  19. Kristensen, R. M., Funch, P. 2000Micrognathozoa: a new class with complicated jaws like those of Rotifera and GnathostomulidaJournal of Morphology246149CrossRefPubMedGoogle Scholar
  20. Mark Welch, D., Meselson, M. 2000Evidence for the evolution of bdelloid rotifers without sexual reproduction or genetic exchangeScience28812111215PubMedGoogle Scholar
  21. Markevich, G. I. 1989Morphology and the principle organisation of sclerite system of the mastax in rotifersProceedings of the Institute Biology of Inland Waters562782[in Russian.]Google Scholar
  22. Melone, G. 2001Rhinoglena frontalis (Rotifera, Monogononta): a scanning electron microscopic studyHydrobiologia446291296CrossRefGoogle Scholar
  23. Melone, G., Fontaneto, D. 2004Trophi structure in bdelloid rotifersHydrobiologia546197202Google Scholar
  24. Melone, G., Ricci, C., Segers, H. 1998aThe trophi of Bdelloidea (Rotifera): a comparative study across the classCanadian Journal of Zoology7617551765CrossRefGoogle Scholar
  25. Melone, G., Ricci, C., Segers, H., Wallace, R. L. 1998bPhylogenetic relationships of phylum Rotifera with emphasis on the families of BdelloideaHydrobiologia388101107CrossRefGoogle Scholar
  26. Nogrady, T. 1982RotiferaParker, S.P. eds. Synopsis and Classification of Living Organisms McGraw-HillNew York865872Google Scholar
  27. Nogrady, T., Pourriot, R., Segers, H. 1995Rotifera, Vol 3. The Notommatidae and the Scaridiidae. Guides to the identification of the microinvertebrates of the continental waters of the world. Vol 8SPB Academic PublishingThe Hague248Google Scholar
  28. Nogrady, T., Wallace, R. L., Snell, T. W. 1993Rotifera. Vol I. Biology, Ecology and Systematics. Guides to the identification of the microinvertebrates of the continental waters of the worldSPB Academic PublishersThe Hague142Google Scholar
  29. Ricci, C., Fascio, U. 1995Life-history consequences of resource-allocation of 2 bdelloid rotifer speciesHydrobiologia299231239CrossRefGoogle Scholar
  30. Ricci, C., Melone, G. 2000Key to the identification of the genera of bdelloid rotifersHydrobiologia4187380CrossRefGoogle Scholar
  31. Ricci, C., Melone, G., Walsh, E. J. 2001A carnivorous bdelloid rotifer, Abrochtha carnivora n.spInvertebrate Biology120136141CrossRefGoogle Scholar
  32. Rohlf, F. J. 1998On applications of geometric morphometrics to studies of ontogeny and phylogenySystematic Biology47147158CrossRefPubMedGoogle Scholar
  33. Rohlf, F. J., 2002a. Tps Series. Department of Ecology and Evolution, State University of New York, Stony Brook, New York. http://life.bio.sunysb.edu/morph/Google Scholar
  34. Rohlf, F. J. 2002bNTSYS-pc, version 2.10zExeter SoftwareSetauket, New YorkGoogle Scholar
  35. Rohlf, F. J., Marcus, L. F. 1993A revolution in morphometricsTrends in Ecology and Evolution8129132CrossRefGoogle Scholar
  36. Segers, H. 1993Rotifera of some lakes in the floodplain of the River Niger (Imo State, Nigeria). I New species and other taxonomic considerationsHydrobiologia2503961Google Scholar
  37. Segers, H. 1995Rotifera. Vol. 2: The Lecanidae (Monogononta). Guides to the identification of the microinvertebrates of the continental waters of the world. 6SPB Academic PublishingThe Hague226Google Scholar
  38. Segers, H. 1997Contribution to a revision of Floscularia Cuvier, 1798 (Rotifera: Monogononta): notes on some Neotropical taxaHydrobiologia354165175CrossRefGoogle Scholar
  39. Segers, H., Melone, G. 1998A comparative study of trophi morphology in Seisonidea (Rotifera)Journal of Zoology244201207CrossRefGoogle Scholar
  40. Segers, H., Wallace, R. L. 2001Phylogeny and classification of the Conochilidae (Rotifera, Monogononta, Flosculariacea)Zoologica Scripta303748CrossRefGoogle Scholar
  41. Sokal, R. R., Rohlf, F. J. 1995Biometry, the Principles and Practice of Statistics in Biological Research3rd ednFreeman and coNew York887Google Scholar
  42. Sørensen, M. V. 2000An SEM study of the jaws of Haplognathia rosea and Rastrognathia macrostoma (Gnathostomulida), with a preliminary comparison with the rotiferan trophiActa Zoologica, Stockholm81916Google Scholar
  43. Sørensen, M. V. 2002aOn the evolution and morphology of the rotiferan trophi, with a cladistic analysis of RotiferaJournal of Zoological Systematics and Evolutionary Research40129154CrossRefGoogle Scholar
  44. Sørensen, M. V. 2002bPhylogeny and jaw evolution in Gnathostomulida, with cladistic analysis of the generaZoologica Scripta31461480CrossRefGoogle Scholar
  45. Sørensen, M. V. 2003Further structures in the jaw apparatus of Limnognathia maerski (Micrognathozoa), with notes on the phylogeny of the GnathiferaJournal of Morphology255131145CrossRefPubMedGoogle Scholar
  46. Sørensen, M. V., Sterrer, W. 2002New characters in the gnathostofmulid mouth parts as revealed by scanning electron microscopyJournal of Morphology253310334CrossRefPubMedGoogle Scholar
  47. Tannreuther, G. W. 1920The development of Asplanchna ebbesbornii (Rotifer)Journal of Morphology33389437CrossRefGoogle Scholar
  48. Zelinka, C. 1891Studien über Räderthiere III. Zur Entwicklungsgeschichte der Räderthiere nebst Bemerkungen über ihre Anatomie and BiologieZeitschrift für wissenschaftliche Zoologie531159Google Scholar

Copyright information

© Springer 2005

Authors and Affiliations

  1. 1.Department of BiologyState University of MilanMilanItaly

Personalised recommendations