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Title: The parasite ecology of the Patagonian toothfish (Dissostichus eleginoides Smitt, 1898)
Author: Brickle, Paul
ISNI:       0000 0001 3479 4767
Awarding Body: University of Aberdeen
Current Institution: University of Aberdeen
Date of Award: 2003
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In this study the parasites of the Patagonian toothfish were examined from the Patagonian Shelf and the Southern Ocean.  The study presents a catalogue and reviews the parasites recovered.  Only 21.6% of the parasite fauna is specific to D. eleginoides and it is infected with many generalist species which infect some of the fish on which it preys upon and are likely to be directly transferred from predator to prey, this feature appears to be characteristic of predatory fish species.  On the Patagonian Shelf a total of 27 parasite taxa were recorded and this diverse fauna was comparable to other predatory fish within the area.  In this area a number of parasites exhibited significant correlations with host size and showed significant changes in prevalence with depth and season.  In the Antarctic a total of 32 parasite taxa were recovered.  It became clear that the parasite fauna became less diverse the further east you moved from the Falkland Islands around the Antarctic.  The potential for using parasites as tools for examining the stock structure of D. eleginoides around Patagonian Shelf and the Antarctic was examined.  The study employed the multivariate cluster and linear discriminant function analyses on the parasite communities of D. eleginoides from the different study areas examined.  It is concluded that the analyses of the parasites fauna in the Southern Ocean could provide fisheries management with a powerful tool to study the discreteness of stocks and to follow host movements.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available