16 results
Environment
PROJECT NUMBER • 1987-009
PROJECT STATUS:
COMPLETED

Diseases of abalone

In 1985 and 1986 many greenlip abalone Haliotis laevigata near Edithburg in the St Vincent Gulf died. The protozoan parasite, Perkinsus olseni, was suspected to be the cause. We showed that Perkinsus olseni was seasonally abundant in greenlip from the edge of the die-back area. It was also common in...
ORGANISATION:
University of Queensland (UQ)
Industry
PROJECT NUMBER • 1992-125.22
PROJECT STATUS:
COMPLETED

Potential pharmaceutical products from Australian beche-de-mer

This final report details all work conducted under a 5 month pilot study funded by a small grant from the National Seafood Centre in December 1994. During this time we (i) collected and/or prepared dry powders from species of eviscerated holothurians; and (ii) evaluated extracts of the powdered...
ORGANISATION:
University of Queensland (UQ)
Adoption
PROJECT NUMBER • 1997-336
PROJECT STATUS:
COMPLETED

Symposium on parasitic diseases of aquatic animals: 10th International Congress of Protozoology

A symposium on protozoan diseases of aquatic animals was planned as a feature of the 10th International Congress of Protozoology. Speakers invited for the symposium were: Dr Mike Hine, NIWA, NZ, an expert on oyster and fish diseases, Prof. Tim Flegel, Mahidol University, Bangkok, an expert on prawn...
ORGANISATION:
University of Queensland (UQ)
Environment

Identification of deep water trawl fish stocks using parasites as markers

Project number: 1984-027
Project Status:
Completed
Budget expenditure: $0.00
Principal Investigator: Bob J. Lester
Organisation: University of Queensland (UQ)
Project start/end date: 28 Dec 1987 - 31 Dec 1987
Contact:
FRDC

Objectives

1. Determine whether orange roughy, blue grenadier and gemfish constitute single stocks within the south-eastern Australian trawl fishery,
2. or whether each species consists of two or more essentially discrete stocks

Final report

Author: R.J.G. Lester
Final Report • 1987-12-31 • 3.59 MB
1984-027-DLD.pdf

Summary

Orange roughy are a relatively sedentary species with little movement between fish management zones. This is the conclusion of our analysis of the numbers of parasites in the gut wall of 1251 orange roughy Hoplostethus atlanticus from eight areas off southern Australia and three areas off New Zealand.

Two manuscripts were submitted for publication: Stock discrimination of orange roughy Hoplostethus atlanticus by parasite analysis by R.J.G. Lester, K.B. Sewell, A. Barnes and K. Evans, and The numbers of selected parasites in Australian and New Zealand samples of orange roughy Hoplostethus atlanticus, 1983 to 1986, by K.B. Sewell and R.J.G. Lester

Project products

Report • 1.57 MB
1984-027-Supplementary report.pdf

Summary

The numbers of selected parasite species from 23 samples of gemfish, Rexea solandri, from seven locations off southern Australia are given. The data were examined for evidence of isolated gemfish populations. Canonical multivariate analyses of the numbers of larval nematodes (Anisakis spp. and Terranova sp.), larval cestodes (Hepatoxylon trichiurid and Nybelinia sp.), acanthocephalans (Rhadinorhynchus sp. and Corynosoma sp.), and a hemiuroid digenean from a total of763 gemfish showed that the parasite faunas of fish from eastern Australia were similar except for a sample taken off New South Wales at the end of the spawning season whose affinities are unknown.

Fish from South Australia had similar parasite faunas to those collected from eastern Australia suggesting the eastern and western Bass Strait fish belong to the same stock. Samples collected from the Great Australian Bight were distinct from the southern and eastern fish. Differences in parasite fauna were detected between samples taken within the spawning season and those taken from the same locations outside the spawning season, presumably a result of the spawning migration.

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