Host Specificity and Survival Outside the Host

Klaus Rohde
Host specificity

Some aspidogastreans have been recorded from few host species, but most have a low degree of host specificity, i.e., they infect a wide range of host species. Thus, Aspidogaster conchicola infects many species of freshwater bivalves belonging to several families, as well as snails, many species of freshwater fishes of several families, and freshwater tortoises (references in Rohde, 1972).

Survival outside the host

Digenean trematodes have been cultured in various, complex, media. However, their parasitic stages die soon in water. In contrast, several aspidogastrean species were shown to survive in simple media for long periods. For example, A. conchicola survived in water for a fortnight, and in a mixture of water and saline solution for up to five weeks. L. manteri from fish could be kept alive for up to 13 days in dilute sea water (1:5) in which they laid eggs containing larvae infective to snails (references in Rohde, 1972).


Rohde, K. (1972). The Aspidogastrea, especially Multicotyle purvisi Dawes, 1941. Advances in Parasitology 10, 77 - 151.

Rohde, K. (1973). Structure and development of Lobatostoma manteri sp. nov. (Trematoda: Aspidogastrea) from the Great Barrier Reef, Australia. Parasitology 66, 63-83.

About This Page

Klaus Rohde
University of New England, Armidale, New South Wales, Australia

Page: Tree of Life Host Specificity and Survival Outside the Host Authored by Klaus Rohde. The TEXT of this page is licensed under the Creative Commons Attribution License - Version 3.0. Note that images and other media featured on this page are each governed by their own license, and they may or may not be available for reuse. Click on an image or a media link to access the media data window, which provides the relevant licensing information. For the general terms and conditions of ToL material reuse and redistribution, please see the Tree of Life Copyright Policies.

close box

This page is a note that is attached to a branch of the Tree of Life.

ToL notes provide brief accounts of characteristics, short summaries, commentaries, media files, taxonomic information, or identification tools for a given group of organisms.

For a more detailed explanation of the different ToL page types, have a look at the Structure of the Tree of Life page.

close box


Page Content

articles & notes



Explore Other Groups

random page

  go to the Tree of Life home page