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The functional morphology of the genitalia of the spermato-phore-producing monogenean parasite Diplectanum aequans (Wagener) Diesing, with a note on the copulation of the parasite

Published online by Cambridge University Press:  06 April 2009

J. E. Paling
J. E. Paling
Affiliation:
Department of Zoology and Comparative Physiology, The University, Birmingham, 15, U.K.*
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Extract

The genitalia of Diplectanum aequans (Wagener) Diesing are described and a functional interpretation is postulated.

Spermatophores are produced from a pair of diffuse glands lying laterally amidst the vitellaria. The secretion from these glands is stored in an anterior reservoir, across the centre of which is a viscous disk which delineates two internal chambers.

Each spermatophore has an elongated stalk and an ovoid head and is considered to be moulded in a muscular bulb and in the penis, prior to extrusion through the penis.

The penis is composed of two concentric tubes and it has a slight hook at its distal end. The vagina has a glandular base and muscular lips. Its internal cast corresponds to the shape of the penis tip.

Copulation in D. aequans is described.

The occurrence and biological significance of spermatophore production in animals are discussed.

I would like to acknowledge the help given to me by the Director and Staff of the Marine Biological Association Laboratory and also by the Proprietors of Cook and Sons Ltd., of Salcombe, Devon. I am most grateful to Dr J. Llewellyn for much helpful advice throughout the course of this study.

The work was conducted during the tenure of a D.S.I.R. Studentship and includes the results of special studies made possible by a grant from The Browne Fund of The Royal Society.

Type
Research Article
Information
Parasitology , Volume 56 , Issue 2 , May 1966 , pp. 367 - 383
Copyright
Copyright © Cambridge University Press 1966

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References

REFERENCES

Alexander, A. J. (1957). The courtship and mating of the scorpion Opisthophthalmus laiimanus. Proc. zool. Soc. Lond. 128, 529–44.CrossRefGoogle Scholar
Baker, E. W. & Wharton, G. W. (1952). An Introduction to Acarology. 465 pp. New York: Macmillan.Google Scholar
Bychowsky, B. E. (1957, trans. W. J. Hargis, 1961). Monogenetic Trematodes, their Classification and Phylogeny, 627 pp. Washington: American Institute of Biological Sciences.Google Scholar
Caballero, E. Y. C. & Hollis, M. B. (1961). Trematodos de peces de aguas Mexicanas del Pacifico. 20. Tres especies de monogenoidea Byehowsky 1937. An. Inst. Biol. Méx. 32, 201–17.Google Scholar
Ceréonot, L. (1949). Onychophora. In Traité, de, Zoologie, ed. Grassé, P.-P., vol. 1, pp. 3–37. Paris: Masson et cie.Google Scholar
Davey, K. G. (1960). The evolution of spermatophores in insects. Proc. R. ent. Soc. Lond. (A), 35, 107–13.Google Scholar
Fryer, G. (1960). The spermatophores of Dolops ranarum (Crustacea, Branchiura): their structure, formation and transfer. Q. Jl microsc. Sci. 101, 407–32.Google Scholar
Ghilarov, M. S. (1958). Evolution of the insemination character in terrestrial arthropods. Zool. Zh. 27, 707–35.Google Scholar
Ghilarov, M. S. (1959). Evolution of the insemination type in insects as a result of the transition from aquatic to terrestrial life in the course of phylogenesis. A eta symp. Evol. Ins., Praha, pp. 50–5.Google Scholar
Gregory, G. E. (1965). The formation and fate of the spermatophore in the African migratory locust. Locusta migratoria migratorioides Reiche and Fairmaire. Trans. E. ent. Soc. Lond. 117, 33–6.CrossRefGoogle Scholar
Hargis, W. J. (1955). Monogenetic trematodes of Gulf of Mexico fishes, 3. The superfamily Gyrodactyloidea. Q. Jl Fla. Acad. Sci. 18, 33–47.Google Scholar
Hinton, H. E. (1964). Sperm transfer in insects and the evolution of haemocoelic insemination. In Insect Reproduction, Symposium No. 2, R. ent. Soc. Lond. pp. 95–107.Google Scholar
Hollis, M. B. (1954). Diplectanum amplidiscatum n.sp., trématode monogénetique des branchies d'un poisson marin. Annls Parasit. hum. comp. 29, 37–41.CrossRefGoogle Scholar
Hyman, L. H. (1951). The Invertebrates, vol. 3. 572 pp. New York: Mcgraw-Hill Book Co. Inc.Google Scholar
Johnston, T. H. & Tiegs, O. W. (1922). New gyrodaetylid trematodes from Australian fishes, together with a reclassification of the superfamily Gyrodactyloidea. Proc. Linn. Soc. N.S.W. 47, 47–131.Google Scholar
Khalifa, A. (1949 a). The mechanism of insemination and the mode of action of the spermatophore in Gryllus domesticus. Q. Jl microsc. Sci. 90, 281–292.Google Scholar
Khalifa, A. (1949 b). Spermatophore production in Trichoptera and some other insects. Trans. R. ent. Soc. Lond. 100, 449–71.CrossRefGoogle Scholar
Khalifa, A. (1950). Spermatophore production in Blatella germanica (Orthoptera: Blattidae). Proc. R. ent. Soc. Lond. (A), 25, 53–61.Google Scholar
Lang, A. (1884). Die Polycladen. Fauna Flora Golf. Neapel. 11, 636–8.Google Scholar
Laird, M. (1958). Parasites of South Pacific Fishes. II. Diplectanum melanesiensis n.sp., a monogenetic trematode from Fiji and the New Hebrides. Can. J. Zool. 36, 167–73.CrossRefGoogle Scholar
Lane, F. W. (1957). Kingdom of the Octopus. 287 pp. London: Jarrolds.Google Scholar
Lipovsky, L. J., Byers, G. W. & Kardos, E. H. (1957). Spermatophores—the mode of insemination of chiggers (Acarina: Trombiculidae). J. Parasit. 43, 256–62.CrossRefGoogle ScholarPubMed
Llewellyn, J. (1960). Amphibdellid (monogenean) parasites of electric rays (Torpedinidae). J. mar. biol. Ass. U.K. 39, 561–89.CrossRefGoogle Scholar
Llewellyn, J. & Euzet, L. (1964). Spermatophores in the monogenean Entobdella diadema Monticelli from the skin of sting rays, with a note on the taxonomy of the parasite. Parasitology, 54, 337–44.CrossRefGoogle Scholar
Lloyd, A. J. & Yonge, C. M. (1947). Biology of Grangor vulgaris L. in the Bristol Channel and Severn estuary. J. mar. biol. Ass. U.K. 26, 626–61.CrossRefGoogle ScholarPubMed
Maclaren, N. H. W. (1904). Beiträge zur Kenntnis einiger Trematoden (Diplectanum aequans Wagener und Nematobothrium molae n.sp.). Jena. Z. Naturw. 38, 573–618.Google Scholar
Mann, K. H. (1962). Leeches (Hirudinea). 201 pp. London: Pergamon Press.Google Scholar
Manton, S. M. (1938). The passage of spermatozoa into the ovary of Peripatopsis. Phil. Trans. R. Soc. (B), 228, 421–44.Google Scholar
Marshall, S. M. & Orr, A. P. (1955). The Biology of a Marine Copepod. 188 pp. Edinburgh: Oliver and Boyd.Google Scholar
Mathews, D. C. (1954). A comparative study of the spermatophores of three scyllid lobsters. Q. Jl microsc. Sci. 95, 205–15.Google Scholar
Morton, J. E. (1958). Molluscs. 232 pp. London: Hutchinson.Google Scholar
Mueller, J. F. (1936). New gyrodactyloid trematodes from North American fishes. Trans. Am. microsc. Soc. 55, 457–64.CrossRefGoogle Scholar
Palombi, A. (1943). Notizie elmintologiche. 5. Diplectanum (Dactylogyrus) echeneis (Wag.) Par et Per = Lamellodiscus ignoratus n.sp. Diagnosi della specie e suoi ospitatori. Ann. Mus. Zool. Napoli, 7, 1–5.Google Scholar
Parona, C. & Perugia, A. (1889). Di alcuni trematodi ectoparasiti di pesci marini. Nota preventiva. Annali. Mus. civ. Stor. nat. Giacomo Dovia, 7, 740–7.Google Scholar
Price, E. W. (1937). North American monogenetic trematodes. I. The superfamily Gyrodactyloidea. J. Wash. Acad. Sci. 27, 146–64.Google Scholar
Robson, G. C. (1929). A Monograph of the Recent Cephalopoda, vol. 1. 236 pp. London: British Museum (Nat. Hist.).Google Scholar
Sedgwick, A. (1885). The development of Peripatus capensis. Q. Jl microsc. Sci. 25, 449–68.Google Scholar
Smith, M. (1951). The British Amphibians and Reptiles. 318 pp. London: Collins.Google Scholar
Spalding, J. F. (1942). The nature and formation of the spermatophore and sperm plug in Cardnus maenas. Q. Jl microsc. Sci. 83, 399–422.Google Scholar
Stephenson, J. (1930). The Oligochaeta. 978 pp. Oxford: Clarendon Press.Google Scholar
Taylor, J. W. (1900). Monograph of the Land and Freshwater Mollusca of the British Isles, vol. 1. 454 pp. Leeds: Taylor Bros.Google Scholar
Tripathi, Y. R. (1955). Studies on the parasites of Indian fishes. 2. Monogenea, Family: Dactylogyridae. Indian J. Helminth. 7, 5–24.Google Scholar
van Beneden, P. J. & Hesse, C. E. (1863). Récherches sur les bdelloides ou hirudinés et les trématodes marines. Mém. Acad. r. Belg. Cl. Sci. 34, 1–142.Google Scholar
Wagener, G. R. (1857). Beiträge zur Entwicklungs-Geschichte der Eingeweidewürmer. Eine von der Holländischen Societät der Wissenschaften zu Haarlem i. J. 1885 gekronte Preisschrift.Natuurk. Verh. holland Maatsch. Wet. Haarlem. 13, 1–112.Google Scholar
Whitman, C. O. (1891). Spermatophores as a means of hypodermic impregnation. J. Morph. 4, 361–406.CrossRefGoogle Scholar
Yamaguti, S. (1934). Studies on the helminth fauna of Japan. Part 2. Trematodes of fishes, 1. Jap. J. Zool. 5, 249–541.Google Scholar
Yamaguti, S. (1938). Studies on the helminth fauna of Japan. Part 24. Trematodes of fishes 5. Jap. J. Zool. 8, 15–74.Google Scholar
Yamaguti, S. (1953). Parasitic worms mainly from Celebes. Part 2. Monogenetic trematodes of fishes. Acta Med. Okoyama. 8, 204–56.Google Scholar
Yamaguti, S. (1963). Systema Helminthum.4, Monogenea and Aspidocotylea. 699 pp. London: Interscience Publishers.Google Scholar