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Systematics and ecology of selected monogenea from Western Australia

Williams, Alan (1988) Systematics and ecology of selected monogenea from Western Australia. PhD thesis, Murdoch University.

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Abstract

This study of monogeneans from marine and estarine fishes of the Perth area in Western Australia is divided into three main sections.

The first of these is a taxonomic survey which examines 29 teleost species that are common in the Swan River Estuary and adjacent coastal marine embayraents. Thirty-nine species of monogeneans from 10 families were collected and their taxonomy examined. The parasite fauna is discussed in terms of host specificity and species diversity, and the monogenean fauna is compared to that from other geographical localities.

The second part of the study details the attachment mechanism of Heterobothrium elongatum (Diclidophoridae), a polyopisthocotylidan from the above collection. Attachment is unlike that described for any other monogenean and involves subcutaneous invasion of the entire gill arch by the parasite’s haptor and prehaptoral stalk. Aspects of parasite development. site of attachment, pathogenicity and ecology are discussed.

The final area of study is an examination of the population biology of H.elongatum and H.torquigeneri from the gills of the common estuarine and inshore coastal pufferfish. Torquigener pleurogramma. A sampling regime over two years at three localities permitted analysis of parasite dispersion. seasonal abundance and recruitment strategy. Particular attention was given to the life cycle and age structure of host populations which facilitated discussion of host-parasite interactions. The characteristics of estuarine and coastal populations of Heterobothrium spp. were compared and discussed in relation to population studies of monogeneans in the northern hemisphere.

Item Type: Thesis (PhD)
Murdoch Affiliation: School of Biological and Environmental Sciences
Notes: Note to the author: If you would like to make your thesis openly available on Murdoch University Library's Research Repository, please contact: repository@murdoch.edu.au. Thank you.
Supervisor(s): Lethbridge, Roger
URI: http://researchrepository.murdoch.edu.au/id/eprint/51986
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