Hostname: page-component-848d4c4894-75dct Total loading time: 0 Render date: 2024-05-17T12:18:01.235Z Has data issue: false hasContentIssue false
  • English
  • Français

Some stylet cercariae and a microphallid type in British freshwater molluscs

Published online by Cambridge University Press:  06 April 2009

Alan W. Pike
Alan W. Pike
Affiliation:
Zoology Department, University College Cardiff and Commonwealth Bureau of Helminthology, *St Albans, U.K.
Get access Rights & Permissions [Opens in a new window]

Extract

Cercaria helvetica XXXIII Dubois and the cercaria of Sphaerostoma bramae (Müll.) are redescribed and their metacercariae, which occur in various invertebrates, are described. Additional observations are made on C. parvus Khan and C. tarda Khan and their metacercariae, occurring mainly in arthropods, are described. C. wentloogensis sp.nov. has four pairs of penetration glands, a slender, thickened stylet 0·03 mm long and the flame-cell formula

2[(2 + 2 + 2) + (2 + 2 + 2)].

C. rumniensis sp.nov. has four pairs of penetration glands lying dorsally to the acetabulum, a slender thickened stylet 0·03 mm long and at least 20 flame cells arranged in pairs. C. octoglandulata sp.nov. is a virgulate species with four pairs of penetration glands, a partially thickened stylet 0·029–0·032 mm long and the flame-cell formula 2[(3 + 3 + 3) + (3 + 3 + 3)]. Each of these new species develops in sporocysts in the digestive gland of the prosobranch mollusc Bithynia tentaculata. A cercaria occurring in the digestive gland of B. tentaculata and assigned to the Microphallidae on the structure of its metacercaria is considered to encyst in the digestive gland without emerging. It bears no stylet or penetration glands and the cysts occur in the snail in exceedingly large numbers.

All of these cercariae were found in freshwater molluscs collected at the Wentloog level near Cardiff, South Wales.

Type
Research Article
Information
Parasitology , Volume 57 , Issue 4 , November 1967 , pp. 729 - 754
Copyright
Copyright © Cambridge University Press 1967

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Agarwal, S. M. (1956). On a new species of Xiphidiocercaria from Lymnaea accuminata. Proc. natn. Acad. Sci. India, Section B, 26, 141–4.Google Scholar
Azim, M. A. (1936). On the life-history of Lecithodendrium pyramidum Looss, 1896, and its development from a Xiphidiocercaria, C. pyramidum sp.nov., from Melania tuberculata. Ann. trop. Med. Parasit. 30, 351–4.Google Scholar
Belopolskaya, M. M. (1949). [Life-cycle of the trematode Spelotrema pygmaeum, parasitic in birds.] Translated title. Dokl. Akad. Nauk. SSSR 66, 133–5.Google Scholar
Brown, F. J. (1933). On the excretory system and life history of Lecithodendrium chilostomum (Mehl.) and other bat trematodes, with a note on the life history of Dicrocoelium dendriticum (Rudolphi). Parasitology 25, 317–28.Google Scholar
Buttner, A. & Vacher, C. (1960). Recherches sur le développement et l'identification de Plagiorchis (Multiglandularis) cirratus (Rudolphi 1802). I. Etude du cycle évolutif. Annls Parasit. hum. comp. 35, 268–81.Google Scholar
Carriker, M. R. (1946). Observations on the functioning of the alimentary system of the snail Lymnaea stagnalis appressa Say. Biol. Bull. mar. biol. Lab., Woods Hole 91, 81–111.Google Scholar
Chernogorenko-Bidulina, M. I. & Bliznyug, I. D. (1960). [The life-cycle of Sphaerostoma bramae Müller, 1776.] Translated title. Dokl. Akad. Nauk SSSR 134, 237–40.Google Scholar
Ching, H. L. (1962). Six larval trematodes from the snail, Littorina scutulata Gould of San Juan Island, U.S.A., and Vancouver, B.C. Can. J. Zool. 40, 675–6.CrossRefGoogle Scholar
Dobrovolny, C. G. (1939). Life history of Plagioporus sinitsini Mueller and embryology of new cotylocercous cercariae (Trematoda). Trans. Am. microsc. Soc. 58, 121–55.Google Scholar
Dubois, G. (1931). Etude d'une nouvelle espèce de Xiphidiocercaires. Cercaria helvetica XXXIII nov.spec. du groupe des Cercariae armatae et de son système excréteur. Bull. Soc. neuchâtel Sci. nat. 55, 45–9.Google Scholar
Hall, J. E. (1960). Studies on virgulate xiphidiocercariae from Indiana and Michigan. Am. Midl. Nat. 63, 226–45.CrossRefGoogle Scholar
Hall, J. E. & Groves, A. E. (1963). Virgulate xiphidiocercariae from Nitocris dilatus Conrad. J. Parasit. 49, 249–63.Google Scholar
Khan, D. (1961). Studies on larval trematodes infecting fresh-water snails in London (U.K.) and some adjoining areas. Xiphidio-cercariae. Z. ParasitKde 21, 71–87.Google Scholar
McCoy, O. R. (1928). Life history studies on trematodes from Missouri. J. Parasit. 14, 207–28.Google Scholar
Probert, A. J. (1965). Studies on larval trematodes infecting the freshwater molluscs of Llangorse lake, South Wales. Part I. The Xiphidio- and Microcercous cercariae. J. Helminth. 39, 35–52.CrossRefGoogle Scholar
Sinitsin, D. F. (1905). [Contributions to the natural history of trematodes. Distomes of fishes and frogs in the environs of Warsaw.] Translated title. 210 pp.Google Scholar
Thomas, J. D. (1958). Studies on the structure, life history and ecology of the trematode Phyllodistomum simile Nybelin, 1926 (Gorgoderidae: Gorgoderinae) from the urinary bladder of brown trout, Salmo trutta L. Proc. zool. Soc. Lond. 130, 397–435.Google Scholar
Vickers, G. G. (1940). On the anatomy of Cercaria macrocerca from Sphaerium corneum. Q. Jl microsc. Sci. 82, 311–26.Google Scholar