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The attachment of cercariae of an ectoparasitic digenean, Transversotrema patialensis, to the fish host: behavioural and ultrastructural aspects

Published online by Cambridge University Press:  06 April 2009

P. J. Whitfield
Affiliation:
Zoology Department, King's College, Strand, London WC2
R. M. Anderson
Affiliation:
Zoology Department, King's College, Strand, London WC2
N. A. Moloney
Affiliation:
Zoology Department, King's College, Strand, London WC2

Extract

The behaviour which enables the cercariae of the ectoparasitic digenean, Transversotrema patialensis, to establish themselves on the surface of their fish hosts has been described experimentally using anaesthetized fish. Specialized regions of the cercarial tail, the arm processes, seem to be adapted for both specific recognition of, and rapid attachment to, the outer surface of a fish. Each arm process bears an array of nine ciliary sensory structures, the mammiform receptors, which have been tentatively identified as contact chemoreceptor organs involved in host recognition. Also present on each arm is an adhesive pad that mediates the initial attachment to the host. It is a differentiated region of the distal cytoplasm of the epidermal syncytium which invests the whole arm process. The cytoplasm of the pad region contains membrane-bounded adhesive granules, the contents of which are released during activation of the pad.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1975

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References

REFERENCES

Anantaraman, M. (1948). Observations on Cercaria patialensis. Soparkar, 1924 aud its relation. ships. Indian Journal of Helminthology 1, 1122.Google Scholar
Anderson, R. M. & Whitfield, P. J. (1975). Survival characteristics of the free-living cercarial population of the ectoparasitic digenean, Transversotrema patialensis. Parasitology 70.CrossRefGoogle Scholar
Angel, L. M. (1969). Prototransversotrema steeri gen.nov. (Digenea: Transversotrematidae) from a South Australian fish. Parasitology 59, 719–24.CrossRefGoogle Scholar
Brien, P. (1954). Deux formes larvaires de Trematodes congolais. La Parthénogonie—le cycle des cellules germinales (Miscellanea Zoologica. H. Schouteden). Annales du Musée Royale du Congo belge Zoologie 1, 153–62.Google Scholar
Burns, W. C. (1961). Penetration and development of Allassogonoporns vespertilionis and Acanthatrium oregonese (Trematoda: Lecithodendriidae) cercariae in caddis fly larvae. Journal of Parasitology 47, 927–32.CrossRefGoogle Scholar
Clegg, J. A. (1969). Skin penetration by cercariae of the bird schistosome, Austrobilharzia terrigalensis: the stimulatory effect of cholesterol. Parasitology 59, 973–89.CrossRefGoogle ScholarPubMed
Crusz, H. (1956). The progenetic trematode Cercaria patialensis Soparkar in Ceylon. Journal of Parasitology 42, 245.CrossRefGoogle Scholar
Crusz, H., Ratnayake, W. E. & Sathananthan, A. H. (1964). Observations on the structure and life cycle of the digenetic fish-trematode Transversotrema patialense (Soparkar). Ceylon Journal of Science (Biological Science) 5, 817.Google Scholar
Crusz, H. & Sathananthan, A. H. (1960). Metacercaria of Transversotrema patialense in the freshwater fish Macropodus cupanus. Journal of Parasitology 46, 613.CrossRefGoogle Scholar
Dönges, J. (1962). Entwicklungsgeschichtliche und morphologische Untersuchungen an Notocotyliden (Trematoda). Zeitschrift für Parasitenkunde 22, 4367.CrossRefGoogle Scholar
Kearn, G. C. (1967). Experiments on host-finding and host specification in the monogenean fish parasite Entobdella soleae. Parasitology 57, 585605.CrossRefGoogle ScholarPubMed
Kruidenier, F. J. (1953). The formation and function of mucoids in the cercariae of Paragonimus kellicotti Ward (Trematoda: Troglotrematidae). Journal of Morphology 92, 531–43.CrossRefGoogle Scholar
Lyons, K. M. (1969). Compound sensillae in monogenean skin parasites. Parasitology 59, 625–36.CrossRefGoogle Scholar
Lyons, K. M. (1972). Sense organs of monogeneans. In Behavioural Aspects of Parasite Transmission (ed. Canning, E. V. and Wright, C. A.), pp. 181–99. London and New York: Academic Press.Google Scholar
Manter, H. W. (1970). A new species of Transversotrema (Trematoda: Digenea) from marine fishes of Australia. Journal of Parasitology 56, 486–89.CrossRefGoogle Scholar
Nasir, P. (1960). Trematode parasites of snails from Edgbaston Pool: the life history of the strigeoid Cotylurus brevis Dubois and Rausch, 1950. Parasitology 50, 551–75.CrossRefGoogle Scholar
Rao, K. H. & Ganapati, P. N. (1967). Observations on Transversotrema patialensis (Soparkar, 1924) (Trematoda) from Waltair, Andhra Pradesh (India). Parasitology 57, 661–4.CrossRefGoogle Scholar
Rees, F. G. (1967). The histochemistry of the cystogenous gland cells and cyst wall of Parorchis acanthus Nicoll, and some details of the morphology and fine structure of the cercaria. Parasitology 57, 87110.CrossRefGoogle Scholar
Shiff, C. J., Cmelik, S. H. W., Ley, H. E. & Kriel, R. L. (1972). The influence of human skin lipids on the cercanial penetration responses of Schistosoma haematobium and Schistosoma mansoni. Journal of Parasitology 58, 476–80.CrossRefGoogle ScholarPubMed
Soparkar, M. B. (1924). A new cercania from Northern India, Cercaria patialensis nov.spec. Indian Journal of Medical Research 11, 933–42.Google Scholar
Southgate, V. R. (1971). Observations on the fine structure of the cercaria of Notocotylus attenuatus and the formation of the cyst wall of the metacercaria. Zeitschrift für Zellforschungen 120, 420–49.CrossRefGoogle ScholarPubMed
Velasquez, C. C. (1961). Further studies on Transversotrema laruei Velasquez with observations on the life cycle (Digenea: Transversotrematidae). Journal of Parasitology 47, 6570.CrossRefGoogle ScholarPubMed
Whitfield, P. J. & Wells, J. (1973). Observations on the ectoparasitic digenean, Transversotrema patialensis. Parasitology 67, xxvii–xxviii.Google Scholar
Wilson, R. A. & Barnes, P. E. (1974). The tegument of Schistosoma mansoni: observations on the formation, structure and composition of cytoplasmic inclusions in relation to tegument function. Parasitology 68, 239–58.CrossRefGoogle ScholarPubMed