Effects of Habitat, Host Sex and Age on the Parasites of Trichosurus Caninus (Marsupialia: Phalangeridae) in North-Eastern New South Wales.

1982 ◽  
Vol 30 (1) ◽  
pp. 33 ◽  
Author(s):  
PJA Presidente ◽  
JL Barnett ◽  
RA How ◽  
WF Humphreys
Keyword(s):  
Intestinal Tract ◽  
New South ◽  
Pulmonary Inflammation ◽  
Ixodes Holocyclus ◽  
Preferred Habitat ◽  
South Wales ◽  
Host Sex ◽  
North Eastern ◽  
Portal Veins ◽  
Hepatic Portal

The condition of 57 Trichosurus caninus (Ogilby), and their ectoparasites, endoparasites and associated pathology were examined; ages and habitat status of these animals were known. Condition scores for females were greater (P<0.005) than those for males. Seven ectoparasite species (two ticks, five mites), two protozoan and seven helminth (one cestode, six nematodes) species were identified in T. caninus from both preferred and peripheral habitats. Prevalence of Amplicaecum robertsi (Sprent & Mines) larvae and the oxyurid nematode Adelonema trichosuri (Johnston & Mawson) were greater (P<0.05) in T. caninus from peripheral habitat than in preferred-habitat animals. Greater burdens (P<0.05) of the tick Ixodes holocyclus Neumann, two mites Trichosurolaelaps dixoa Domrow and 7. crassipes Womersley, and the trichostrongylid nematode Paraustrostrongylus trichosuri Mawson were found in peripheral-habitat T. caninus. Subadult males harboured greater Paraustrostrongylus burdens (P<0.05) than did subadult females or adult animals. Three Trichosurus vulpecula (Kerr) sympatric with peripheral-habitat T. caninus were also examined. One tick I. trichosuri Roberts, one mite T. crassipes and four helminth species: Bertiella trichosuri Khalil, A. robertsi, Paraustrostrongylus trichosuri and Parastrongyloides trichosuri Mackerras, were identified. The cestode B. trichosuri was recovered from the three T. vulpecula and four peripheral-habitat T. caninus, but only from one T. caninus from preferred habitat. Larval A. robertsi caused focal eosinophilic cholangiohepatitis with dilatation of affected bile ducts in livers of both Trichosurus spp. Eosinophilic vasculitis of hepatic portal veins was associated with ?Sprattia venacavincola (Spratt & Varughese) and focal granulomatous splenitis with sequestered microfilariae in T. caninus. Also, ?Marsupostrongylus minesi Spratt in dilated alveoli caused mild pulmonary inflammation. There were no pathological changes associated with intestinal tract parasites. Free corticosteroid levels in preferred-habitat female T. caninus were greater (P<0.05) than in those from peripheral habitat. This correlated with hyperplastic changes in adrenal glands of these females, but not with parasite burdens.

scholarly journals Ixodes holocyclus Tick-Transmitted Human Pathogens in North-Eastern New South Wales, Australia

2016 ◽  
Vol 1 (1) ◽  
pp. 4 ◽  
Author(s):  
Stephen Graves ◽  
Chrissie Jackson ◽  
Hazizul Hussain-Yusuf ◽  
Gemma Vincent ◽  
Chelsea Nguyen ◽  
...  
Keyword(s):  
New South ◽  
New South Wales ◽  
Human Pathogens ◽  
Ixodes Holocyclus ◽  
South Wales ◽  
North Eastern

Effectiveness of protected areas in north-eastern New South Wales: recent trends in six measures

2002 ◽  
Vol 106 (1) ◽  
pp. 57-69 ◽  
Author(s):  
R.L Pressey ◽  
G.L Whish ◽  
T.W Barrett ◽  
M.E Watts
Keyword(s):  
Protected Areas ◽  
New South ◽  
New South Wales ◽  
South Wales ◽  
North Eastern ◽  
Recent Trends

Outflow ignimbrite sheets from Late Carboniferous calderas, Currabubula Formation, New South Wales, Australia

1983 ◽  
Vol 120 (5) ◽  
pp. 487-503 ◽  
Author(s):  
J. McPhie
Keyword(s):  
New South ◽  
Sedimentary Facies ◽  
Late Carboniferous ◽  
The West ◽  
Pyroclastic Deposits ◽  
Flow Units ◽  
South Wales ◽  
Accretionary Lapilli ◽  
North Eastern ◽  
Thickness Variations

SummaryRegionally mappable, silicic, outflow ignimbrite sheets are interbedded with fluvial volcanogenic conglomerates and sandstones of the Late Carboniferous Currabubula Formation of north-eastern N.S.W. Four of the most widespread of these ignimbrites are described and defined as members. The oldest member is comprised of many thin, originally non-welded flow units. Interbedded accretionary lapilli horizons may indicate phreatomagmatic activity at vent during the eruption in addition to local rain-flushing of co-ignimbrite ash clouds. Of the three other members, two are multiple flow-unit sheets, 160–180 m in aggregate thickness. Substantial portions of these sheets were originally welded. The remaining member is a simple welded ignimbrite characterized by abundant spherulites and lithophysae. Irregular pre-eruption topography and contemporaneous erosion were responsible for thickness variations of the ignimbrite sheets. Some palaeovalleys, now delineated by the ignimbrites, persisted in spite of repeated pyroclastic influxes. Relic pumice, shards and crystal fragments are ubiquitous components of the sedimentary facies of the Currabubula Formation, and were probably derived from originally poorly consolidated pyroclastic deposits such as airfall ash layers and non-welded ignimbrites. No surface trace of the sources of these ignimbrites exists. However, internal facies, thickness variations and volumes of the ignimbrites indicate that they periodically emanated from a multiple-caldera terrain which was continuously active during the Late Carboniferous, and located several kilometres to the west of present exposures.

scholarly journals Modeling Methane Emission from Wetlands in North-Eastern New South Wales, Australia Using Landsat ETM+

2010 ◽  
Vol 2 (5) ◽  
pp. 1378-1399 ◽  
Author(s):  
Clement E. Akumu ◽  
Sumith Pathirana ◽  
Serwan Baban ◽  
Daniel Bucher
Keyword(s):  
Methane Emission ◽  
New South ◽  
New South Wales ◽  
South Wales ◽  
North Eastern

On-site domestic wastewater treatment by reed bed in the moist subtropics

2001 ◽  
Vol 44 (11-12) ◽  
pp. 353-360 ◽  
Author(s):  
L. Davison ◽  
T. Headley ◽  
M. Edmonds
Keyword(s):  
New South ◽  
Domestic Wastewater ◽  
Moisture Loss ◽  
Reed Beds ◽  
Treatment Performance ◽  
South Wales ◽  
Domestic Wastewater Treatment ◽  
Australian State ◽  
North Eastern ◽  
Reed Bed

This paper summarises the results of studies on four subsurface flow wetlands (reed beds) located in the moist sub-tropical north eastern corner of the Australian state of New South Wales. The reed beds, which are subjected to a variety of effluent types, all have a gravel substrate planted with Phragmites australis. All four units were found to maintain satisfactory treatment performance year round. Mean removal efficiencies ranged from 56% to 90% (SS), 70% to 93% (BOD), 38% to 66% (TN), 87% to 99.8% (Faecal coliforms), and 42% to 70% (TP - with one seasonal result of 0% for the eight year old unit) for the four reed beds. After eight years in operation the oldest reed bed was showing signs of phosphorus saturation with outlet TP concentrations exceeding inlet concentrations on some occasions. The youngest reed bed studied appeared to be operating efficiently after five months. A summer water balance on one of the reed beds revealed an average crop factor of 1.6 and a moisture loss to atmosphere of 40% of influent flow. Treatment performance (particularly for TN and SS) was found to be negatively correlated with rainfall during one study. The paper discusses the implications of the above results for on-site system designers and regulators and identifies areas for further investigation.

Models of the distribution and abundance of ground-dwelling mammals in the eucalypt forests of north-eastern New South Wales in relation to environmental variables

2002 ◽  
Vol 29 (3) ◽  
pp. 313 ◽  
Author(s):  
P. C. Catling ◽  
R. J. Burt ◽  
R. I. Forrester
Keyword(s):  
Environmental Variables ◽  
New South ◽  
New South Wales ◽  
Slope Position ◽  
Slope Aspect ◽  
Significant Variable ◽  
South Wales ◽  
North Eastern ◽  
Eucalypt Forests ◽  
A Site

Statistical models are presented of the distribution and abundance of ground-dwelling mammals in eucalypt forests in relation to environmental variables within an area of approximately 24 000 km2 in north-eastern New South Wales. Environmental variables are defined as climatic or topographic variables that may be useful to map the distribution of fauna. The environmental variables examined were season, temperature, rainfall, elevation, lithology, steepness of slope, position on slope, aspect and landform profile. The probability of recording some species was higher in spring than autumn and many species were in highest abundance in areas of low temperature (high elevation). Although aspect was a significant variable in a number of models, no species was absent from any aspect category. Mid-slopes down to and including creeks and drainage lines were particularly important for many species, as were areas with flatter terrain. Although we have modelled environmental variables only there will no doubt be longer-term interactions between habitat and environmental variables. Fundamentally, environmental variables will determine the type of habitat present at a site, and the distribution of canopy communities, at least, can be predicted from environmental variables. However, other studies have shown for ground-dwelling mammals that environmental variables contribute little and it is the state of the habitat locally, and particularly the understorey, that determines their presence and abundance at a site. The results are discussed in relation to similar models using habitat variables and in relation to the use of such models in the management of ground-dwelling fauna in forests.

Dragonflies (Odonata) of coastal sand-dune fresh waters of South-eastren Queensland and North-eastern New South Wales

1982 ◽  
Vol 33 (1) ◽  
pp. 77 ◽  
Author(s):  
AH Arthington ◽  
JAL Watson
Keyword(s):  
Physicochemical Properties ◽  
Sand Dune ◽  
New South ◽  
New South Wales ◽  
Physicochemical Characteristics ◽  
Coastal Sand Dune ◽  
Freshwater Streams ◽  
South Wales ◽  
North Eastern ◽  
Coastal Sand

The Odonata and physicochemical properties of freshwater streams, lakes, ponds and bogs in the sand-dune systems of Fraser, Moreton and North Stradbroke Islands and Cooloola, Queensland: and Wooli, New South Wales, are described. The odonate faunas of these dune masses show some differences from those of nearby areas, and there are close associations between some species and particular types of dune fresh water. Although no physicochemical characteristics were identified that might limit these dune dragonflies to their specific habitats, the lake-dwellers in particular may be useful indicators of environmental change.

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