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Pacific Palms, Australia

This study was initiated to investigate poor survival of stocked Brook Char Salvelinus fontinalis in Wollondibby Creek, a tributary of Lake jindabyne in the south eastern highlands of NSW, Australia. Sampling of the creek following stocking was carried out on two separate occasions by poisoning 17.6 km, almost the entire length of the creek in 19 sections. Collection of fish was shown to be 78% effective. Five species of fish were present in the creek: Salvelinus fontinalis, Salmo trutta, Oncorhynchus mykiss, Anguilla australis and Galaxias sp. Population density in terms of numbers offish per hectare and kilograms offish per hectare of all species present was determined. Recovery of stocked S. fontinalis was low (0.38% in 1977 and 0.15% in 1979). Distribution of salmonid populations in the creek was significantly affected by physical barriers and eel predation, not cormorants as first thought. Eel predation was confirmed by the presence of salmonids in eel stomachs and extensive fin damage as a result of eel attack. Only five S. fontinalis in the first sampling event and one in the second sampling event had reached angling size (250 mm). It is suggested that stocking of S. fontinalis not be carried out in areas where A australis occurs and that careful consideration be given to the location of physical barriers in the creek when stocking and the presence of native fish.

Length - weight relationships for 29 fish species occurring in the Murray-Darling River System in inland NSW were determined using data collected principally between 1957 and 1970. In Golden Perch Macquaria ambigua, this relationship is examined with regard to locality, year and sex. In the Murrumbidgee River large females were more rotund than males. In the Murray River fish caught in November appeared to be more rotund than those caught in September supporting an increase in ovary size to be expected at this time of year, and 1960 fish were more rotund than fish from 1963 and 1964 also reflecting time of year and river heights. Twenty one of the species were examined with regard to all fish and sex differences. The remaining eight were examined for all fish combined only. In most cases a single curve adequately describes the relationship for each species, except when the population includes large numbers of maturing females or when substantial sexual dimorphism occurs, such as in Philypnodon grandiceps and Mogurnda adspersa. The relationships provided support for using shape to sex some species.

Llewellyn L.C.,Curlew Biological Services
Australian Zoologist | Year: 2015

The multimillion dollar Tasmanian Atlantic Salmon aquaculture industry grew from a shaky beginning with just 36 ripe females in the 1970's.The early unsuccessful attempts to introduce Adantic Salmon (Salmo salar) to Australia which started in 1841 are summarised. By 1960 no known populations of Atlantic Salmon existed in Australia so Dr D.D. Francois arranged the import of Atlantic Salmon ova in 1963,1964 and 1965. By 1972 when I took over management of Adantic Salmon in N. S.W., the remaining stocks had become very low, only 36 ripe females remaining, and the importation of new stocks were prohibited. By 1979 1,000,000 ova were laid down for that year although mortalities were high. In the 1980's several shipments of these Atlantic Salmon ova were supplied to Tasmania, and from these, the multimillion dollarTasmanian Salmon aquaculture industry has developed. Lake Jindabyne is still stocked annually with Atlantic Salmon and reasonable angler returns result, but no breeding in the wild has been reported.

Llewellyn L.C.,Curlew Biological Services
Australian Zoologist | Year: 2015

348 species have been recorded for the Riverina area between 1940 and 2011.291 were recorded by me between 1964 and 1972, 95 of which were banded at the Inland Fisheries Research Station, 23 banded elsewhere in the Riverina and 173 sight records. An additional 28 species were recorded over the 1962-78 period by other workers (A. Davies, J. Izzard, J. Hobbs, P. Wilson and other joint authors) giving a total or 319 species in the Riverina over that period. The more recent lists of the Bird Atlas 1 and 2 1988-2001 and the Bird Trails document up to 2011, which cover a large proportion of the areas covered in this study, add 29 species to the overall list making a total of 348 species.

Courtice G.P.,Curlew Biological Services | Thompson J.F.,Canberra Hospital | Van Beurden E.,Health Promotion Unit
Australian Zoologist | Year: 2010

Gordon's first postgraduate students emerged at the end of his Devonian period, moving into the Carboniferous with the emergence of amphibian studies.This era was marked by extensive frogging expeditions, when Litoria aurea was thick on the ground and Litoria flavipunctata called in the New England swamps. Water holding frogs were unceremoniously dug up from the receding rainforests. Early reptilian studies by students were overtaken at the beginning of the Gordon Mesozoic in a massive adaptive radiation, into crocodiles, flying, radio-telemetry, termites, kangaroos, some of the best adapted lasting for eons. Wonderful outback Odysseys marked the early era and the diverse environment laid the foundation for emergence of the young and their survival into the Quaternary and the age of man.

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