Food of the Snake-Necked Turtle, Chelodina Longicollis (Shaw) (Testudines: Chelidae) in the Murray Valley, Victoria and New South Wales.

1984 ◽  
Vol 11 (3) ◽  
pp. 573 ◽  
Author(s):  
BC Chessman

The diet of C. longicollis was inferred from analysis ofthe stomach contents of 105 turtles collected from the Murray River and associated water bodies in south-eastem Australia. The most important food items in terms of volume were carrion and decapod crustaceans in the river, camon and littoral-benthic invertebrates in lakes and ponds containing fish, and planktonic crustaceans (mostly Cladocera) in ponds and pools without fish. Terrestrial invertebrates, which had presumably fallen into the water, nektonic insects and whole fish were also eaten. Diet varied relatively little with turtle size and sex, although juveniles ate relatively less carrion and more littoral and benthic invertebrates than adults. Within the constraints of its obligate carnivory, C. longicollis is a catholic and opportunistic feeder.

1986 ◽  
Vol 13 (1) ◽  
pp. 65 ◽  
Author(s):  
BC Chessman

Examination of the stomach contents of 122 E. macquarii from the Murray River, Lake Boga and other waters in northern Victoria and southern New South Wales showed that this species is an opportunistic omnivore. In order of decreasing importance the main food types were filamentous algae, vertebrate (mainly fish) carrion, detritus, periphyton (including sponges), mobile aquatic invertebrates, aquatic macrophytes and terrestrial invertebrates. There was a degree of dietary shift with turtle size, small specimens containing more detritus and periphyton and less filamentous algae, macrophytes and carrion than bigger ones. The diets of mature males and females did not differ appreciably. Diel changes in stomach content volumes indicated that E. macquarii feeds mainly during the daytime.


1985 ◽  
Vol 36 (2) ◽  
pp. 219 ◽  
Author(s):  
JH Harris

Stomach contents of Australian bass, M. novemaculeata, sampled from the Hawkesbury River and Georges River in the Sydney Basin, New South Wales, between November 1977 and January 1982 were analysed by the occurrence and points methods. Stomach fullness was also recorded. A total of 143 aquatic and terrestrial animal taxa were present in the diet, and these were grouped into 19 food types for analysis. M. novemaculeata is a euryphagic carnivore. Season and habitat type had significant effects on composition of the diet. Insects were the most important food type, followed by fish and large crustaceans. A large proportion of the diet of bass was derived from allochthonous sources, mainly during summer, and especially in lotic habitats. Mean stomach fullness was highest in spring and lowest in winter. Young M. novernaculeata (TL 11-47 mm) from the Hawkesbury River estuary fed on far fewer prey taxa (mainly chironomids and copepods) than did adults. Dietary overlap occurs between M. novemaculeata and many other carnivorous freshwater vertebrates in the Sydney Basin. However, persistent competitive clashes are generally avoided, either by differences in microhabitat preference and feeding behaviour or by larger-scale habitat partitioning.


1982 ◽  
Vol 10 (2) ◽  
pp. 42-43
Author(s):  
D. Tournier

Every Wednesday we have a training program for Aboriginal educators in Swan Hill, which is situated on the New South Wales and Victorian border near the Murray River. The Aboriginal educators involved in this program are: Jon Kirby, Caroline Steel, Lynette Bugeja and myself. This program is co-ordinated by our resource teacher – Jill Pattenden.In 1981 we covered such subjects as reading and writing skills, communication, teaching techniques, lesson planning, Aboriginal history, child psychology, counselling, lessons in organising, oral history, community and alcohol, public speaking, submission drafting, study of Aboriginal spirituality.All these subjects were studied with the help of people in the community, both Aboriginal and European. These resource people included local elders, field officers, counsellors, psychologists, an alcohol counsellor, teachers, and people with tribal experience.As part of the program we did activity days at local primary schools. These days are called Jemauraji days (which means “today’s dreaming”). They consisted of different activities such as ground drawing, damper making, corroborée, totems and fire making. Everybody in each school was involved in these activities.


1988 ◽  
Vol 15 (3) ◽  
pp. 267 ◽  
Author(s):  
BC Chessman

Activity cycles of Chelodina expansa, C. longicollis and Emydura macquarii were inferred from captures in baited traps set in the Murray River and Lake Boga. C. expansa and E, macquarii were caught only from October to April, while C. longicollis was taken in all months but June and July. Minimum water temperatures at capture were highest for C. expansa and lowest for C. longicollis. Diel cycles of catch rate were often weak, but tended to be bimodal for all species, with peaks near dawn and in the afternoon or evening. Unlike the Chelodina species, E. macquarii was ofen caught near midnight. In the laboratory (at c.24�C with light:dark 12:12 h), the average diel pattern of locomotor activity was weakly bimodal in C. expansa, strongly bimodal in C. longicollis and unimodal in E. macquarii.


1979 ◽  
Vol 6 (3) ◽  
pp. 319 ◽  
Author(s):  
GN Goodrick

The study area of 500 km2 was humid and subtropical, on flood plain near Coraki, New South Wales. Gut contents were examined and the percentage by volume of different food items is tabulated for black duck (Anas superciliosa) and grey teal (A. gibberifrons). Black duck fed on flooded meadow-grass flats in autumn, moving when the flats dried to seasonal swamps, and when those also dried, to lagoons. Diet varied with place. Seeds of grasses, swamp plants and lagoon plants were eaten, with water snails and water beetle adults and larvae, water spiders and ostracods, and terrestrial invertebrates being eaten when the dry flats became flooded. They ate also waste maize grain from harvested fields before ploughing. Grey teal fed in the seasonal swamps in winter and then left the area almost completely; they ate almost the same items as black duck but fed by the muddy edges of seasonal swamps more than the black duck did. It was known that black duck strip seed from the growing plant and grey teal pick up the fallen seed.


1977 ◽  
Vol 4 (2) ◽  
pp. 127 ◽  
Author(s):  
BA Ellis ◽  
EM Russell ◽  
TJ Dawson ◽  
CJF Harrop

Stomach contents of free-ranging animals were analysed botanically for low Atriplex shrubland in western New South Wales, Australia, during 1972-74 in good seasons producing abundant growth and diversity of vegetation. Red kangaroo (Megaleia rufa), euro (Macropus robustus) and sheep (Ovis aries) selected grass and forbs when those were readily available. In poorer pasture sheep selected mainly flat-leaved chenopods (saltbush) and kangaroos selected mainly grass with different amounts of flat- or round-leaved chenopods. Euros were the most selective, eating grass even when there was little grass present. Potential overlaps in diet between kangaroos and sheep were greatest in good pasture and least in the poorest conditions. The other groups of plants considered were non-chenopod shrubs and browse. Extent of overlap was not clear, because animals may have eaten different species within the groups of plants. The study period did not include any severe drought, in which overlap in diet and competition between animal species would have been most significant.


2000 ◽  
Vol 22 (2) ◽  
pp. 121 ◽  
Author(s):  
B Law ◽  
CA Urquhart

RECENT evidence indicates that the large-footed myotis Myotis macropus (previously Myotis adversus) is the sole representative of its genus in Australia (Cooper et al. in press). These are small bats that forage over pools of water in small streams, rivers and lakes, using large feet to trawl for prey along water surfaces (Dwyer 1970; Thompson and Fenton 1982). Little is known about their diet. Fish have been confirmed in the diet of M. macropus at a population that forages over a large lake, near Brisbane (Robson 1984). Unidentified insect material formed the bulk of the species? diet in Robson?s study. A small number of scats were also examined from M. macropus caught on the Murray River in South Australia (Jansen 1987). These contained fish remains and insects, particularly Chironominae (midges) and Culicidae (mosquitoes). We studied the diet of M. macropus at a forest stream to determine the importance of aquatic prey and thus to help guide management strategies for the species.


1965 ◽  
Vol 5 (16) ◽  
pp. 91
Author(s):  
D Leggo ◽  
JA Seberry

Diphenyl wraps and diphenyl liners in combination with sodium a-phenylphenate and borax-boric acid dips were compared for control of green mould in stored oranges. Four experiments were carried out in the Sunraysia area on the Murray River in 1959 and three at Gosford on the central coast of New South Wales in 1960 and 1961. Treatment of the fruit with sodium o-phenylphenate, combined with the application of diphenyl, whether impregnated in fruit wrappers or case liners, effectively reduced green mould in oranges stored at atmospheric temperatures for periods up to nine weeks. There were indications that the location of the diphenyl-impregnated case liners within the container is an important factor in the efficiency of mould control by these treatments.


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