scholarly journals The Occurrence of Antibody to Bluetongue Virus in New South Wales. II. Coastal Region and Age Distribution Surveys

1988 ◽  
Vol 41 (4) ◽  
pp. 571 ◽  
Author(s):  
I R Littlejohns ◽  
RW Burton
Keyword(s):  
Bluetongue Virus ◽  
New South ◽  
New South Wales ◽  
Age Distribution ◽  
Coastal Region ◽  
Coastal Areas ◽  
South Wales

Three surveys of cattle for bluetongue (BLU) antibody were conducted over the years 1978-1980 in coastal areas of New South Wales. In each survey the samples were identified by age.

Heavy Metals in Sediments from the Central New South Wales Coastal Region

1978 ◽  
Vol 29 (6) ◽  
pp. 777 ◽  
Author(s):  
A de Forest ◽  
SP Murphy ◽  
RW Pettis
Keyword(s):  
Heavy Metals ◽  
Environmental Assessment ◽  
Analytical Methods ◽  
New South ◽  
New South Wales ◽  
Coastal Region ◽  
South Wales ◽  
Coastal Marine ◽  
Sea Bed ◽  
Shelf Region

Coastal marine sediments were collected from 20 oceanographic stations along the central New South Wales coastal region in September 1975. Chemical and physical properties of the sediments were determined to establish analytical methods suitable for use in environmental assessment studies. Statistical analyses of the data indicated that this region is typical of an unpolluted continental shelf region, in which the sea bed is mainly composed of sand with some silt.

Predation of livestock by wild dogs in eastern New South Wales.

1989 ◽  
Vol 11 (2) ◽  
pp. 61 ◽  
Author(s):  
PJS Fleming ◽  
TJ Korn
Keyword(s):  
New South ◽  
New South Wales ◽  
Coastal Region ◽  
North East ◽  
The North ◽  
East Region ◽  
South Wales ◽  
Control Programmes ◽  
June July ◽  
Wild Dogs

A monthly survey involving officers from eastern New South Wales Pastures Protection Boards was conducted over four years from 1982 to 1985. Information was collected on the number and type of livestock attacked within each board district, sightings of wild dogs, the number of wild dogs kiied, the method by which they were kiied and the locations at which the observations occurred. A total of 25,644 livestock animals were reported killed or wounded from four regions; the North-East Coastal Region, the North-East Tablelands Region, the Central-East Region and South-East Region. Sheep were the most commonly attacked domestic animals followed by cattle and goats. Regional differences were apparent in the type of livestock killed and seasonal patterns of predation were evident. We recommend that annual control programmes be brought forward from June/July to late April in order to precede predation peaks.

Annual reproductive rythm in Merino sheep related to the choice of a mating time at Trangie, Central Western New South Wales

1960 ◽  
Vol 11 (5) ◽  
pp. 805 ◽  
Author(s):  
RB Dun ◽  
W Ahmed ◽  
AJ Morrant
Keyword(s):  
New South ◽  
New South Wales ◽  
Age Distribution ◽  
Conception Rate ◽  
Multiple Ovulation ◽  
South Wales ◽  
Low Incidence ◽  
Motility Of Sperm ◽  
Poor Nutrition ◽  
Mating Time

The ovaries from slaughtered Peppin Merino ewes were examined at Trangie for a 12 month period commencing in April 1954. A seasonal rhythm was demonstrated for the percentage of ewes ovulating and for the percentage of multiple ovulations. The seasonal peak was in March–April, with a trough in November–December. Data were compared from a series of autumn and spring matings over the years 1953–1959 using genetically comparable flocks of similar age distribution, mated by identical methods. The overall incidence of oestrus was significantly higher in the first 3 weeks of mating (artificial insemination) in the autumn. The patterns of incidence of oestrus also differed, oestrus being much higher at the commencement of mating in the autumn. Differences between years in the incidence of oestrus were more pronounced in the spring, low incidence being correlated with poor nutrition. In only one mating — spring of 1954, a drought year — was the incidence of oestrus low initially, with a sharp rise commencing at 14 days. The conception rate for autumn-mated ewes was 10 percent. higher than for spring-mated ewes. Little difference was observed in the number and motility of sperm used at the seasonal matings. Lambing percentages strongly favoured the autumn mating: 15 percent. more wet ewes, 25 per cent. more twins mothered, 37 per cent. more lambs mothered, and 33 per cent. more lambs weaned. There was little difference between seasons in ewe deaths prior to and during lambing, or in deaths of lambs between mothering and weaning. The relative importance of the factors causing the 37 per cent. more lambs mothered in the autumn mating was as follows: incidence of oestrus, 11 per cent.; pattern of oestrus, 5 per cent.; incidence of multiple ovulation, 57 per cent.; conception rate, 27 per cent. The importance of the conception rate could be largely an associated effect of the higher autumn incidence of multiple ovulation. The weaning weight of lambs tended to be slightly higher for autumn matings, although there was great variation between years, both in the size and in the sign of differences. These differences had almost disappeared by 17 months of age. The choice of a mating time in central western New South Wales is discussed relative to these findings.

Systematics and Biogeography of the Mygalomorph Spider Family Migidae (Araneae) in Australia

1984 ◽  
Vol 32 (3) ◽  
pp. 379 ◽  
Author(s):  
RJ Raven
Keyword(s):  
New Species ◽  
New South ◽  
New South Wales ◽  
Coastal Areas ◽  
South Wales

The two Australian migid genera, Migas and Heteromigas. are diagnosed and new species of each, M variapalpus and H terraereginae, are described from southern Queensland The genus Homogona. previously included in the Migidae, is transferred to the Ctenizidae, Heteromigas bonneti Zapfe is tentatively transferred to Actinopus (Actinopodidae) Unnamed Migas species are recorded from Mt Bellenden Ker in north Queensland. coastal areas of northern New South Wales and southern Queensland, and Norfolk I

Reproduction and Growth of The Bandicoot Isoodon macrourus At Four Sites in Rockhampton, Queensland.

1998 ◽  
Vol 20 (3) ◽  
pp. 411
Author(s):  
S.M. Attard ◽  
S.C. Mckillup
Keyword(s):  
Growth And Development ◽  
New South ◽  
Reproductive Ecology ◽  
New South Wales ◽  
Natural Populations ◽  
Northern Territory ◽  
Coastal Areas ◽  
South Wales ◽  
Cape York ◽  
The Tropics

Within Australia the northern short-nosed bandicoot, Isoodon macrourus, occurs in coastal areas from the Kimberleys to the monsoonal tropics of the Northern Territory and from Cape York Peninsula to the Hawkesbury River, New South Wales (Gordon 1983). The reproductive ecology of I. macrourus has been studied in two captive (Hall 1983; Gemmell 1988) and five natural populations (Gordon 1971, 1974; Gemmell 1982; Hall 1983; Friend 1990; Kem- per et al. 1990; Budiawan 1993). Three of the latter (Darwin, the Mitchell Plateau and Townsville) were in the tropics; breeding at these sites occurred dur- ing the wetter months of the year but not during the summer of 1982/3 in Darwin when the monsoon failed (Friend 1990) or during the relatively dry winter/spring of 1991 in Townsville (Budiawan 1993), suggesting a dependence on rainfall (Friend 1990; Budiawan 1993). We report on differences in the reproduction, growth and development of I. macrourus in Rockhampton, Queensland, from March - October 1993 at four adjacent sites which received different amounts of artificial watering.

Geographical and Temporal Distribution of the Common Armyworm, Mythimna Convecta (Lepidoptera: Noctuidae), in Eastern Australia: Larval Habitats and Outbreaks

1995 ◽  
Vol 43 (6) ◽  
pp. 601 ◽  
Author(s):  
G Mcdonald ◽  
TR New ◽  
RA Farrow
Keyword(s):  
Arid Regions ◽  
East Coast ◽  
New South ◽  
New South Wales ◽  
Age Distribution ◽  
Winter Period ◽  
Atmospheric Conditions ◽  
North East ◽  
South Wales ◽  
Eastern Australia

Surveys for juvenile Mythimna convecta throughout the agricultural and arid regions of eastern Australia were conducted from 1986 to 1989. Armyworm populations north of 33 degrees S were generally dominated by M. convecta, and further south by Persectania ewingii. M. convecta was most widely distributed in spring. Incidence during autumn and winter ranged from very low in Victoria to high in northern New South Wales and southern Queensland. Summer infestations were found mostly on the south-east coast where favourable habitats were abundant. Colonised habitats included extremely arid regions, where small numbers of larvae were associated with grasses in temporary watercourses, and the higher-rainfall, eastern regions. The largest infestations occurred in south-east Queensland and north central and north-east New South Wales, particularly after heavy autumn rains. There appeared to be two generations of M. convecta over the autumn/winter period: the first a synchronised event starting on the autumn rains and the second commencing in June/July and comprising a wide spread in age distribution. The progeny of the winter generation are probably the source of most economic outbreaks. Mythimna convecta larvae were collected from subtropical and temperate grasses. In the former, most larvae were found in tussocks, particularly of Dichanthium sericeum and Chloris truncata, which provided a dense, fine-leaf crown and canopy. After good autumn rainfall and vegetative growth, the wiry-stemmed tussocks, including Astrebla spp. and C. ciliaris, were also common hosts. The temperate grasses, particularly Avena fatua and Hordeum leporinum, were the main winter hosts although the greatest densities were found only in thick swards of growth, particularly those that contained dried grass. Two of the largest surveys, in autumn 1987 and 1988, followed periods of heavy rain and provided strongly contrasting results. The 1987 survey of central and south-west Queensland located no M. convecta larvae, indicating that densities were below detection thresholds. The paucity of larvae was attributed to lack of suitable atmospheric conditions to assist moth immigrations and absence of adequate populations in potential source areas. The 1988 survey revealed a major outbreak of M. convecta larvae in south-east Queensland and northern New South Wales. The area received record rains during early April of that year, and the outbreak probably arose from moth migrations from the east and south-east coast. An outbreak of similar scale occurred after further heavy autumn rains in 1989.

The prevalence and severity of diseases in the coastal soybean crop of New South Wales

1991 ◽  
Vol 31 (4) ◽  
pp. 545 ◽  
Author(s):  
GE Stovold ◽  
HJP Smith
Keyword(s):  
Pseudomonas Syringae ◽  
Xanthomonas Campestris ◽  
New South ◽  
Soybean Mosaic Virus ◽  
New South Wales ◽  
Coastal Region ◽  
Leaf Blight ◽  
Stem Rot ◽  
Phytophthora Megasperma ◽  
South Wales

Rainfed soybean (Glycine max) crops in the northern coastal region of New South Wales were surveyed from 1985 to 1987 for the prevalence and severity of diseases. Sixteen diseases were recorded over the 3 seasons, but only rust (Phakopsora pachyrhizi), black leaf blight (Arkoola nigra) and bacterial pustule (Xanthomonas campestris pv. glycines) were present each season. Rust was the most significant disease, infecting 50, 20 and 6% of crops in 1985, 1986 and 1987. The severity of rust was related to rainfall and temperature after flowering, with the most severe outbreaks in the higher rainfall area of the lower Richmond Valley. Black leaf blight was also significant and occurred in 39, 10 and 27% of crops in 1985, 1986 and 1987, but in most crops severity was low. The other diseases recorded were downy mildew (Peronospora manschurica), root and stem rot (Phytophthora megasperma f. sp. glycinea), stem canker (Rhizoctonia sp.), pod and stem blight (Phomopsis spp.), anthracnose (Colletotrichum spp.), seedling blight (Rhizoctonia sp.), stem rot (Phytophthora sp.), white mould (Sclerotinia sclerotiorum), flower blight (Botrytis cinerea), leaf spot (Phoma sp.), bacterial blight (Pseudomonas syringae pv. glycinea), mosaic (soybean mosaic virus) and orange bark (not identified). All of these diseases were generally of low prevalence and severity.

Age Structures of Populations of Kangaroos (Macropodidae) taken by Professional Shooters in New South Wales.

1975 ◽  
Vol 2 (1) ◽  
pp. 1 ◽  
Author(s):  
GR Wilson
Keyword(s):  
Life Table ◽  
New South ◽  
New South Wales ◽  
Age Distribution ◽  
Annual Survival ◽  
South Wales ◽  
Significant Difference ◽  
Time Specific ◽  
Age Structures

Skulls were aged for 4623 grey kangaroos (of both species), 1030 red kangaroos and 84 wallaroos taken by professional shooters in 1973 around eight towns in New South Wales. There was no significant difference in the proportion of adult (4-9 y) to old (10+ y) animals between areas, but there was a difference between red and grey kangaroos. The proportion of young (0-3y) animals, however, varied significantly between areas; this is attributed partly to variation between shooters. A time-specific life table was constructed on the basis of a stationary age distribution; the annual survival was 0.661 for grey kangaroos, 0.729 for wallaroos and 0.790 for red kangaroos. These rates seem influenced by the minimum carcass weights of 12, 13 and 16 kg for the three species respectively, and by the greater tolerance of graziers for red than grey kangaroos. The limitations and potentialities of these observations are discussed and the direction of future investigations indicated.

Present and past distribution of Australian Brush-turkeys Alectura lathami in New South Wales ? implications for management

2006 ◽  
Vol 12 (1) ◽  
pp. 22 ◽  
Author(s):  
Ann Göth ◽  
Kirsty P. Nicol ◽  
Geoffrey Ross ◽  
Jim J. Shields
Keyword(s):  
Sustainable Management ◽  
New South ◽  
Management Strategies ◽  
New South Wales ◽  
Coastal Areas ◽  
Habitat Destruction ◽  
Population Status ◽  
The Public ◽  
South Wales ◽  
Alectura Lathami

Australian Brush-turkeys Alectura latham increasingly cause a considerable human-wildlife problem in New South Wales, especially in areas where they destroy gardens through their scratching activity. Wildlife managers Jack detailed information about the overall distribution of the species, which is essential for assessing its population status and the development of sustainable management strategies. To address this, we collated 1 564 reports on Australian Brushturkey distribution, from 1788 to April 2004. We show that the birds have disappeared from areas in the south, such as near Jindabyne, and from areas in the west, such as the Pilliga. The most obvious reasons for such a contraction are habitat destruction, hunting and predation by foxes and cats. At the same time, Brush-turkeys have recently been reported in the east, in coastal areas and the periphery of cities where the birds were previously absent or extirpated. However, we argue that such an apparent expansion should be viewed with caution, as this could partly also be explained by an increase in reporting activity, reduction in hunting pressure, and feeding by members of the public. Our analysis suggests that although the species has increased in numbers in coastal areas, it has withdrawn from regions in the southern and western part of its distribution.

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