Studies on the attachment response ofIsthmiophora melis cercariae (Trematoda: Echinostomatidae) (original) (raw)
Abstract
The cercaria of_Isthmiophora melis_ is relatively specific to suitable intermediate hosts, amphibia and fish, as early as the stage of attachment. Attachment responses are maximally stimulated by intact amphibia, whereas isolated frog tissues have a reduced efficiency. Human urine contains attachment triggering substances. Its effectiveness is reduced, when carbonate systems are removed, and may be restored by addition of carbonate. Aqueous solution systems of dissolved CO2 and H2CO3/HCO −3 stimulate attachment responses, especially at pH 6.0–7.5. The attachment response to frog skin surface seems to be triggered by the buffering system, which uses carbonate solution equilibria as important components.
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Author notes
- Walter Motzel
Present address: , Lerchenweg 20, D-8700, Würzburg, FRG
Authors and Affiliations
- Zoologisches Institut, Fachbereich Biologie der Universität, Siesmayerstraße 70, D-6000, Frankfurt/Main, Federal Republic of Germany
Walter Motzel & Wilfried Haas
Authors
- Walter Motzel
- Wilfried Haas
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Motzel, W., Haas, W. Studies on the attachment response of_Isthmiophora melis_ cercariae (Trematoda: Echinostomatidae).Z. Parasitenkd. 71, 519–526 (1985). https://doi.org/10.1007/BF00928354
- Accepted: 19 February 1985
- Issue date: July 1985
- DOI: https://doi.org/10.1007/BF00928354