Biodiversity and Biosystematics - Morphological and Physiological studies

The investigation of functional morphology is a key component of the elucidation of many physiological and behavioural aspects of parasite biology. For example, current studies at the Institute are investigating the feeding, digestive, endocrine and exocrine systems of a range of parasites including the crustacean Lepeophtheirus salmonis, Lernaeocera branchialis, Argulus spp., the monogeneans Gyrodactylus spp. and Entobdellaspp. and other helminth groups e.g. nematodes, digeneans and cestodes. As part of the work investigating the biology of salmon lice have undertaken an investigation into the hormonal control of moulting and reproduction. This collaborative work involves the characterisation of steroid hormones, juvenoids and neuropeptides present in different stages of the life-cycle.

Myxosporeans and microsporeans are also included in our current programme. These studies employ a wide range of techniques including light, SEM, TEM and confocal microscopy in conjunction with a range of computer-based techniques including image processing and analysis.

Selected References

  1. Kuchta, R., Shinn, A.P., Hanzelová, V. & Scholz, T. (2006) A comparative study of the egg morphology of four species of Eubothrium (Cestoda: Pseudophyllidea) with comments on their subsequent development. Invertebrate Biology, 125, 1-8.
  2. Kuchta, R., Hanzelová, V., Poddubnaya, L.G., Shinn, A.P. & Scholz, T. (2005) Redescription of Eubothrium fragile (Batsch, 1786) and E. rugosum (Rudolphi, 1802) (Cestoda: Pseudophyllidea) parasites of fish in the Holarctic Region. Folia Parasitologica, 52, 251-260.
  3. Hanzelová, V., Kuchta, R., Scholz, T. & Shinn, A.P. (2005)Morphometric analysis of four species of Eubothrium (Cestoda: Pseudophyllidea): An interspecific and intraspecific comparison. Parasitology International, 54, 207-214.
  4. Shinn, A.P., Hansen, H., Bakke, T.A. & Bachmann, L. (2004) Morphometric differences between laboratory reared mt clades of Gyrodactylus salaris and G. thymalli (Monogenea). Folia Parasitologica, 51, 239-252.
  5. Shinn, A.P., Sommerville, C., Bron, J .E. & Gibson, D.I. (2003) Notes on the mechanism of attachment in species of the genus Gyrodactylus Nordmann, 1832. Invertebrate Biology, 122, 1-11.
  6. Bell, A.S., Sommerville, C. & Gibson, D.I. (2002) Multivariate analyses of morphometric features from Apatemon gracilis (Rudolphi, 1819) and A. annuligerum (v. Nordmann, 1832) (Digenea: Strigeidae) metacercariae. Systematic Parasitology, 51, 121-133.
  7. Ozer, A., Wootten, R. & Shinn, A.P. (2002) Survey of actinosprean types (Myxozoa) belonging to seven collective groups found in freshwater salmon farms in Northern Scotland. Folia Parasitologica, 49, 189-210
  8. Bron, J.E., Shinn, A.P. & Sommerville, C. (2000) Ultrastructure of the cuticle of chalimus larva of the salmon louse Lepeophtheirus salmonis (Krøyer, 1837) (Copepoda, Caligidae). Contributions to Zoology, 69 (1/2) 39-49
  9. Bell, S., Bron, J.E. & Sommerville, C. (2000) Distribution of exocrine glands in Lepeophtheirus salmonis (Krøyer 1837) and Caligus elongatus Nordmann, 1832.(Copepda: Caligidae). Contributions to Zoology, 69 (1/2), 9-12.
  10. Gaze, W.H. & Wootten, R. (1999) An SEM study of adhesive disc skeletal structures isolated from trichodinids (Ciliophora : Peritichida) of the genera Trichodina Ehrenberg, 1838 and Paratrichodina Lom, 1963. Systematic Parasitology, 43, 167-174.
  11. Bron, J.E. & Sommerville, C. (1998). The functional and comparative morphology of the photoreceptors of the copepodid larva of the salmon louse Lepeophtheirus salmonis (Krøyer, 1837) (Crustacea: Copepoda, Caligidae). Zoologischer Anzeiger, 237, 113–126.
  12. Lom, J., McGeorge, J., Feist, S.W., Morris, D. & Adams, A. (1997) Guidelines for the uniform characterisation of the actinosporean stages of parasites of the phylum Myxozoa. Diseases of Aquatic Organisms, 30 (1), pp.1-9.
  13. Bell, A. S., Gibson, D.I. & Sommerville, C. (1996) Chaetotaxy and armature of Ichthyocotylurus erraticus (Rudolphi, 1809) and Ichthyocotylurus variegatus (Creplin, 1825) cercariae (Digenea, Strigeidae ). Parasitology Research, 83, 70–76.
  14. Wayland, M.T., Gibson, D.I. & Sommerville, C. (1996) Echinorhynchus trachyrinci n. sp. (Acanthocephala: Echinorhynchidae) from macrourid fishes of the Northeast Atlantic. Systematic Parasitology, 37, 59-66.
  15. Shinn, A.P., des Clers, S., Gibson, D.I. & Sommerville, C. (1996) Multivariate analysis of morphometrical features fromGyrodactylus spp. (Monogenea) parasitising British salmonids:Light microscope based studies. Systematic Parasitology, 33, 115- 125.
  16. Shinn, A.P., Sommerville, C. & Gibson, D.I. (1995) Distribution and characterization of Gyrodactylus Nordmann, 1832 (Monogenea) parasitizing British salmonids in the UK, and their discrimination from G. salaris Malmberg, 1957. Journal of Natural History, 29, 1383-1402.
  17. Shinn, A.P., Gibson, D.I. & Sommerville, C. (1995) A study of the composition of the sclerites of Gyrodactylus Nordmann, 1832 (Monogenea) using X-ray elemental analysis. International Journal of Parasitology, 25, (7), 797-805.
  18. McGeorge, J., Sommerville, C. & Wootten R. (1994) Light and electron microscope observations on extrasporogonic and sporogonic stages of the genus Sphaerospora Thelohan, 1892 from Atlantic salmon, Salmo salar L., in Scotland. Journal of Fish Diseases, 17, 227-238
  19. Shinn, A., Gibson, D.I. & Sommerville, C. (1993) An SEM study of the haptoral sclerites of the genus Gyrodactylus Nordmann 1832 (Monogenea) following extraction by digestion and sonication techniques. Systematic Parasitology, 25, 135-144.
  20. Bron, J.E., Sommerville, C. & Rae, G.H. (1993) Functional morphology of alimentary canal of larval stages of the parasitic copepod Lepeophtheirus salmonis. Journal of Zoology, London, 230, 207-220.