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Ovoviviparity in platyhelminth life-cycles

  • R. C. Tinsley (a1)
Abstract
SUMMARY

The encapsulated embryos of platyhelminths may be retained and complete their development in utero in a range of circumstances. However, hatching within the parent (the criterion of ovoviviparity) is relatively rare and larvae generally emerge only after deposition. Viviparity is characterized by the nutritional dependency of the unencapsulated larva upon the parent, but in several cases larvae retained within a shell also receive parental nutrients during intra-uterine development. Uptake of exogenous nutrients via shell pores occurs in Schistosoma mansoni but the eggs, which gain all the advantages of intra-uterine retention, are supported by host nutrients.

Intra-uterine larval development avoids the hazards of development in the external environment and eliminates the time delay between oviposition and infection. Deposition of immediately infective offspring may be concentrated in time and space to exploit periods of host vulnerability. The control and precision of transmission is illustrated by examples in which the opportunity for invasion is restricted because of either host behaviour or environmental instability. This strategy has been an important factor in the evolution of polystomatid monogeneans, and its effectiveness is demonstrated by comparison of the life-cycles of Polystoma integerrimum and Pseudodiplorchis americanus. Ovoviviparity also increases reproductive potential in some polystomatids by extending the period of multiplication and by increasing established populations through internal re-infection. In Eupolystoma alluaudi, the capacity for ovoviviparity is programmed into larval development and this regulates population growth within individual hosts.

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M. Anderson (1981). The change with host age of the composition of the ancyrocephaline (monogenean) populations of parasites on thick-lipped grey mullets at Plymouth. Journal of the Marine Biological Association of the United Kingdom 61, 833–42.

M. Beverley-Burton (1962). Some monogenetic trematodes from Amphibia in Southern Rhodesia including a new species, Polystoma mashoni sp.n., from Bufo regularis (Reuss). Journal of Parasitology 48, 752–7.

P. R. Burton (1962). In vitro uptake of radioglucose by a frog lung-fluke and correlation with the histochemical identification of glycogen. Journal of Parasitology 48, 874–82.

J. C. Chubb (1977). Seasonal occurrence of helminths in freshwater fishes. Part I Monogenea. In Advances in Parasitology vol. 15 (ed. B. Dawes ) pp. 133199. London and New York: Academic Press.

C. Combes (1972). Ecologie des Polystomatidae (Monogenea): facteurs influencant le volume et la rythme de la ponte. International Journal for Parasitology 2, 233–8.

R. B. Crandall (1960). The life history and affinities of the turtle lung-fluke, Heronimus chelydrae MacCallum, 1902. Journal of Parasitology 46, 289307.

H. G. Guilford (1961). Gametogenesis, egg-capsule formation, and early miracidial development in the digenetic trematode Halipegus eccentricus Thomas. Journal of Parasitology 47, 757–64.

S. J. Johnston (1912). On some trematode parasites of Australian frogs. Proceedings of the Linnean Society of New South Wales 37, 285353.

G. C. Kearn & S. Macdonald (1976). The chemical nature of host hatching factors in the monogenean skin parasites Entobdella soleae and Acanthocotyle lobianchi. International Journal for Parasitology 6, 457–66.

E. Lees (1962). The incidence of helminth parasites in a particular frog population. Parasitology 52, 95102.

R. M. Lewert , J. Para & M. A. Ozcel (1970). Miracidial uptake of glucose in intact eggs of Schistosoma mansoni. Journal of Parasitology 56, 1250–1.

J. Llewellyn (1962). The life histories and population dynamics of monogenean gill parasites of Trachurus trachurus (L.). Journal of the Marine Biological Association of the United Kingdom 42, 587600.

S. Macdonald (1974). Host skin mucus as a hatching stimulant in Acanthocotyle lobianchi, a monogenean from the skin of Raja spp. Parasitology 68, 331–8.

S. Macdonald & J. Llewellyn (1980). Reproduction in Acanthocotyle greeni n.sp. (Monogenea) from the skin of Raia spp. at Plymouth. Journal of the Marine Biological Association of the United Kingdom 60, 81–8.

A.-M. Maeder (1973). Monogènes et trématodes parasites d'amphibiens en Côte d'lvoire. Revue suisse de Zoologie 80, 267322.

R. M. Michaels & A. Prata (1968). Evolution and characteristics of Schistosoma mansoni eggs laid in vitro. Journal of Parasitology 54, 921–30.

D. Murith (1981 a). Contribution à l'étude de la systématique des polystomes (Monogenea: Polystomatidae) parasites d'amphibiens (Anoures) de basse Cĉte d'lvoire. Revue Suisse de Zoologie 88, 475533.

D. Murith , M. M. Gassmann & C. Vaucher (1978). Contribution à l'étude des polystomes d'amphibiens du Cameroun. Revue Suisse de Zoologie 85, 681–98.

P. M. Nollen (1968). Uptake and incorporation of glucose, tyrosine, leucine and thymidine by adult Philophthalmus megalurus (Cort, 1914) (Trematoda), as determined by autoradiography. Journal of Parasitology 54, 295304.

P. M. Nollen , A. L. Restaino & R. A. Alberico (1973). Gorgoderina attenuata: uptake and incorporation of tyrosine, thymidine and adenosine. Experimental Parasitology 33, 468–76.

L. C. Oglesby (1961). Ovoviviparity in the monogenetic trematode Polystomoidella oblonga. Journal of Parasitology 47, 237–43.

G. Oliver (1978). Description des deux cas d'ovoviviparité chez les Diplectanidae Bychowsky, 1957 (Monogenea: Monopisthocotylea). Zeitschrift für Parasitenkunde 57, 247–50.

A. A. Paul (1938). Life history studies of North American freshwater polystomes. Journal of Parasitology 24, 489510.

G. J. Race , R. M. Michaels , J. H. Martin , J. E. Larsh Jr & J. L. Matthews (1969). Schistosoma mansoni eggs: an electron microscope study of shell pores and microbarbs. Proceedings of the Society for Experimental Biology and Medicine 130, 990–2.

F. G. Rees (1939). Studies on the germ-cell cycle of the digenetic trematode Parorchis acanthus Nicoll. Part I. Anatomy of the genitalia and gametogenesis in the adult. Parasitology 31, 417–33.

F. G. Rees (1940). Studies on the germ-cell cycle of the digenetic trematode Parorchis acanthus Nicoll. Part II. Structure of the miracidium and germinal development in the larval stages. Parasitology 32, 372–91.

R. M. Savage (1950). Observations on some natural epizootics of the trematode Polystoma integerrimum among tadpoles of Rana temporaria temporaria. Proceedings of the Zoological Society, London 120, 1537.

R. L. Sternholm & K. S. Warren (1974). Schistosoma mansoni: utilization of exogenous metabolites by eggs in vitro. Experimental Parasitology 36, 222–32.

R. C. Tinsley (1973). Observations of Polystomatidae (Monogenoidea) from East Africa with a description of Polystoma makereri n. sp. Zeitschrift für Parasitenkunde 42, 251–63.

R. C. Tinsley (1974). Observations on Polystoma africanum Szidat with a review of the inter-relationships of Polystoma species in Africa. Journal of Natural History 8, 355–67.

R. C. Tinsley (1978 a) The morphology and distribution of Eupolystoma species (Monogenoidea) in Africa, with a description of E. anterorchis sp.n. from Bufo pardalis at the Cape. Journal of Helminthology 52, 291302.

R. C. Tinsley (1978 b). Oviposition, hatching and the oncomiracidium of Eupolysloma anterorchis (Monogenoidea). Parasitology 77, 121–32.

R. C. Tinsley & C. M. Earle (1983). Invasion of vertebrate lungs by the polystomatid monogeneans Pseudodiplorchis americanus and Neodiplorchis scaphiopodis. Parasitology 86, 501–17.

R. C. Tinsley & R. W. Owen (1975). Studies on the biology of Protopolystoma xenopodis (Monogenoidea): the oncomiracidium and life cycle. Parasitology 71, 445–63.

J. P. Thurston (1968). The larva of Oculotrema hippopotami (Monogenea: Polystomatidae). Journal of Zoology 154, 475–80.

V. M. Van der Lande & R. C. Tinsley (1976). Studies on the anatomy, life history and behaviour of Marsupiobdella africana (Hirudinea: Glossiphoniidae). Journal of Zoology 180, 537–63.

F. J. Vande Vusse (1976). Parapolystoma crooki sp. n. (Monogenea: Polystomatidae) from Rana magna in the Philippines. Journal of Parasitology 62, 552–5.

C. Vaucher (1981). Mesopolystoma samiriensis n. gen., n. sp. (Monogenea: Polystomatidae), parasite de Osteocephalus taurinus Steindachner (Amphibia: Hylidae) en Amazonie peruvienne. Revue Suisse de Zoologie 88, 797802.

J. B. Williams (1960). The dimorphism of Polystoma inlegerrimum (Frolich) Rudolphi and its bearing on relationships within the Polystomatidae: Part I. Journal of Helminthology 34, 151–92.

R. A. Wilson , G. Smith & M. R. Thomas (1982). Fascioliasis. In The population Dynamics of Infectious Diseases: Theory and Applications (ed. R. M. Anderson ). London and New York: Chapman and Hall.

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Parasitology
  • ISSN: 0031-1820
  • EISSN: 1469-8161
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