Hydrobiologia

, Volume 518, Issue 1–3, pp 1–7

Plumatella geimermassardi, a newly recognized freshwater bryozoan from Britain, Ireland, and continental Europe (Bryozoa: Phylactolaemata)

  • Timothy S. Wood
  • Beth Okamura
Article

Abstract

Plumatella geimermassardi is a newly recognized species of phylactolaemate bryozoan. Its known range extends from Ireland east through southern Norway and south into Italy. Colonies grow close to the substrate with little free branching; the body wall is mostly transparent and without an obvious raphe. Floatoblasts are broadly oval and relatively small, with distinctively large dorsal fenestra and uniformly narrow ventral annulus. The sessoblast basal valve is low and dish-shaped; the annulus bears tubercles which vary in their prominence. This species brings to 14 the number of phylactolaemate bryozoans known in the region.

Bryozoa Phylactolaemata Plumatella geimermassardi taxonomy 

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References

  1. Anderson, C. L., E. U. Canning & B. Okamura, 1999. Molecular data implicate bryozoans as hosts for PKX (Phylum Myxozoa) and identify a clade of bryozoan parasites within the Myxozoa. Parasitology 119: 555–561.Google Scholar
  2. Bouchet, P., 1997. Inventorying the molluscan diversity of the world: what is our rate of progress? The Veliger 40(1): 1–11.Google Scholar
  3. Canning, E. U., A. Curry, S.W. Feist, M. Longshaw & B. Okamura, 1999. Tetracapsula bryosalmonae n. sp. for PKX organism the cause of PKD in salmonid fish. Bulletin of the European Association of Fish Pathologists 19(2): 203–206.Google Scholar
  4. Ehrlich, P. R. 1995. The scale of the human enterprise and biodiversity loss. In Lawson, J. H. & R. M. May (eds) Extinction Rates. Oxford University Press, Oxford: 214–226.Google Scholar
  5. Geimer, G. & J. A. Massard, 1986. Les Bryozoaires du Grand-Duché de Luxembourg et des régions limitrophes. Travaux Scientifiques du Musée d'Histoire Naturelle de Luxembourg 7: 1–187.Google Scholar
  6. Gruncharova, T., 1971. Internectella bulgarica nov. gen. nov. sp. a new bryozoan species (Bryozoa, Phylactolaemata). Comptes rendus de l'Académie bulgare des Sciences 24(3): 361–364.Google Scholar
  7. Lacourt, A. W., 1968. A monograph of the freshwater Bryozoa-Phylactolaemata. Zoologische Verhandelingen 93: 1–159.Google Scholar
  8. Linné, C. von, 1758. Systema Naturae, p. 790.Google Scholar
  9. Longshaw, M., S. W. Feist, E. U. Canning & B. Okamura, 1999. First identification of PKX in bryozoans from the United Kingdom-molecular evidence. Bulletin of the European Association of Fish Pathologists 19: 146–149.Google Scholar
  10. Massard, J. A. & G. Geimer, 1990. Note on the freshwater Bryozoa (Ectoprocta, Phylactolaemata) of Tenerife. Vieraea 19: 327–338.Google Scholar
  11. Massard, J. A., G. Geimer, K. Økland & J. Økland, 2002. Note on the occurrence of the freshwater bryozoan Plumatella casmiana Oka, 1907 (Bryozoa, Phylactolaemata) in Norway. Achives de l'Institut Grand-ducal de Luxembourg, Section des Sciences naturelles, physiques, et mathématiques 44(2002): 127–143.Google Scholar
  12. Ricciardi, A. & J. B. Rassmussen, 1999. Extinction rates of North American freshwater fauna. Conservation Biology 13(5): 1220–1222.Google Scholar
  13. Toriumi, M., 1955a. Taxonomical study on freshwater Bryozoa. XI. Stephanella hina Oka. Science Reports of Tôhoku University (4) 21 (2): 131–136.Google Scholar
  14. Toriumi, M., 1955b. Taxonomical study on freshwater Bryozoa. XII. On Plumatella repens var. minuta Toriumi 1941. Science Reports of Tôhoku University 21 (2): 137–144.Google Scholar
  15. Wiebach, F. 1975. Specific structures of sessoblasts (Bryozoa: Phylactolaemata). Documents des laboratoires de géologie de la Faculté des Sciences de Lyon 3 (1): 149–154.Google Scholar
  16. Wood, T. S., 1996. Plumatella nitens, a new species of freshwaterbryozoan from North America (Ectoprocta: Phylactolaemata), previously misidentified. Hydrobiologia 328: 147–153.Google Scholar
  17. Wood, T. S., 2001. Bryozoans. In Thorp, J. A. & A. Covich (eds), Ecology and Classification of North American Freshwater Invertebrates. Academic Press, London: 505–525.Google Scholar
  18. Wood, T. S. & B. Okamura, 2004. A New Key to the Freshwater Bryozoans of Britain, Ireland, and Continental Europe. Freshwater Biological Association, Ambleside, U.K. (in press).Google Scholar

Copyright information

© Kluwer Academic Publishers 2004

Authors and Affiliations

  • Timothy S. Wood
    • 1
  • Beth Okamura
    • 2
  1. 1.Wright State UniversityDaytonU.S.A
  2. 2.School of Animal and Microbial SciencesUniversity of ReadingWhiteknightsU.K

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