Zeitschrift für Parasitenkunde

, Volume 63, Issue 3, pp 277–286 | Cite as

Cerebral larvae in the second intermediate host ofDicrocoelium dendriticum (Rudolphi, 1819) andDicrocoelium hospes looss, 1907 (Trematodes, Dicrocoeliidae)

  • Thomas Romig
  • Richard Lucius
  • Werner Frank
Original Investigations


Cerebral larvae ofDicrocoelium dendriticum andD. hospes and the brains of infected ants were studied. Morphologic differences of the freed larvae could not be found, but there were evident differences in number and localization of the cerebral stages. Ants infected withD. dendriticum usually showed one “Hirnwurm” while in the majority of the ants infected withD. hospes two larvae were found.

The typical localization of the “Hirnwurm” ofD. dendriticum was in the ventral part of the subesophageal ganglion; almost every larva ofD. hospes was found in the dorsal part of an antennal lobe. The cyst walls of the larvae were visible only in some specimens. Their thickness seemed to depend on the localization of the larva. Differences in number and localization of the larvae, and hypothetical mechanisms how they could influence the behavior of their hosts are discussed.

Key words

Dicrocoelium dendriticum Dicrocoelium hospes Cerebral larvae Second intermediate host Behavioral changes 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Carney WP (1969) Behavioral and morphological changes in Carpenter Ants harbouring Dicrocoeliid metacercariae. Am Midl Natur 82:605–611Google Scholar
  2. Carney WP (1970)Brachylecithum mosquensis; Infection in the vertebrate, molluscan and arthropod hosts. Trans Am Microsc Soc 89:233–250Google Scholar
  3. Gomori G (1950) A rapid one-step trichrome stain. Am J Clin Pathol 20:118–120Google Scholar
  4. Hohorst W, Graefe G (1961) Ameisen — obligatorische Zwischenwirte des Lanzettegels (Dicrocoelium dendriticum). Naturwissenschaften 48:229–230Google Scholar
  5. Hohorst W (1962) Die Rolle der Ameisen im Entwicklungsgang des Lanzettegels (Dicrocoelium dendriticum). Z Parasitenkd 22:105–106Google Scholar
  6. Hohorst W, Lämmler G (1962) Experimentelle Dicrocoeliose-Studien. Tropenmed Parasitol 13:377–397Google Scholar
  7. Loos-Frank B, Zimmermann G (1976) Über eine dem Dicrocoelien-Befall analoge Verhaltensänderung bei Ameisen der GattungFormica durch einen Pilz der GattungEntomophthora. Z Parasitenkd 49:281–289Google Scholar
  8. Lucius R, Frank W (1978) Beitrag zur Biologie vonDicrocoelium hospes Looss, 1907 (Trematodes, Dicrocoeliidae) Acta Trop (Basel) 35:161–181Google Scholar
  9. Lucius R (1980) Further contributions to the biology ofDicrocoelium hospes Looss, 1907, in West Africa (Ivory Coast) Zentralbl Bakteriol Hyg I Abt Ref 267:306Google Scholar
  10. Lucius R, Romig T, Frank W (1980)Camponotus compressiscapus André (Hymenoptera, Formicidae), an experimental second intermediate host ofDicrocoelium hospes Looss, 1907 (Trematodes, Dicrocoeliidae). Z Parasitenkd 63:271–275Google Scholar
  11. Mitlacher A (1979) Untersuchungen zur Ultrastruktur der Cercarie, der Metacercarie und des “Hirnwurms” vonDicrocoelium dendriticum (Rudolphi, 1819), Looss, 1899. Dissertation (Universität Hohenheim, Parasitologie)Google Scholar
  12. Neuhaus W (1936) Untersuchungen über Bau und Entwicklung der Lanzettegel-Cercarie (Cercaria vitrina) und Klarstellung des Infektionsvorganges beim Endwirt. Z Parasitenkd 8:431–473Google Scholar
  13. Plateaux L (1972) Sur les modifications produites chez unse fourmi par la présence d'un parasite cestode. Ann Sci Nat Zool 14:203–220Google Scholar
  14. Romeis B (1968) Mikroskopische Technik. Oldenbourg-Verlag, München WienGoogle Scholar
  15. Romig T (1980) Studies on the “hirnwurm” ofDicrocoelium hospes andDicrocoelium dendriticum. Zentralbl Bakteriol Hyg I Abt Ref 267:307Google Scholar
  16. Schneider G (1971) Die Wanderung der Metacercarie vonDicrocoelium dendriticum (Rud., 1819), Looss, 1899 (Digenea, Trematoda) im Ameisenzwischenwirt und ihre Steuerung durch physiologisch-ökologische Faktoren Inaugural Dissertation Frankfurt/MGoogle Scholar

Copyright information

© Springer-Verlag 1980

Authors and Affiliations

  • Thomas Romig
    • 1
  • Richard Lucius
    • 1
  • Werner Frank
    • 1
  1. 1.Abt. ParasitologieUniversität HohenheimStuttgart 70Federal Republic of Germany

Personalised recommendations