scholarly journals Foxes in trees: a threat for Australian arboreal fauna?

2018 ◽  
Vol 40 (1) ◽  
pp. 103 ◽  
Author(s):  
Valentina S. A. Mella ◽  
Clare McArthur ◽  
Robert Frend ◽  
Mathew S. Crowther
Keyword(s):  
Vulpes Vulpes ◽  
New South ◽  
New South Wales ◽  
Camera Traps ◽  
Red Foxes ◽  
Invasive Predator ◽  
South Wales ◽  
The Impact

We document the first evidence of tree climbing by red foxes (Vulpes vulpes) in Australia. Camera traps recorded foxes in trees on the Liverpool Plains, New South Wales. This finding prompts a reassessment of the impact that this invasive predator has on Australian fauna: from purely terrestrial to also potentially arboreal.

Diet of red foxes (Vulpes vulpes) in South-west New South Wales, with relevance to lamb predation.

1993 ◽  
Vol 15 (1) ◽  
pp. 39 ◽  
Author(s):  
IW Lugton
Keyword(s):  
Vulpes Vulpes ◽  
Oryctolagus Cuniculus ◽  
New South ◽  
New South Wales ◽  
Ovis Aries ◽  
Red Foxes ◽  
South West ◽  
South Wales ◽  
Preferred Foods ◽  
Autumn And Winter

The diets of 212 foxes (Vulpes vulpes) in the far south-west of New South Wales were determined between 1985 and 1989 and compared with other Australian studies. Mammalian remains, at an overall occurrence of 99.1%, formed the basis of the diet during the autumn and winter months. The most frequently occurring mammals were rabbits (Oryctolagus cuniculus) (34.9%), sheep (Ovis aries) (30.7%) and macropods (Macropus spp.) (20.3%). Insects occurred in 31.1% of stomachs and formed a substantial proportion of the diet. Fresh newborn lamb was identified in only 3.8% of all stomachs, but evidence of lamb consumption was 10 times greater (35.2%) from foxes collected near lambing flocks. Other studies around lambing flocks have also shown a high occurrence of fresh lamb in fox stomachs and there is circumstantial evidence that predation of lambs by foxes can be common. It was concluded that lamb predation is likely to be severe where the fox population density is high, where older foxes predominate, and where alternative preferred foods are scarce. More research is required to confirm these observations.

Temporal, spatial and individual variation in the diet of red foxes (Vulpes vulpes) in central New South Wales

2000 ◽  
Vol 27 (6) ◽  
pp. 593 ◽  
Author(s):  
R. L. Molsher ◽  
E. J. Gifford ◽  
J. C. McIlroy
Keyword(s):  
Individual Variation ◽  
Vulpes Vulpes ◽  
Agricultural Land ◽  
New South ◽  
New South Wales ◽  
Ovis Aries ◽  
Red Foxes ◽  
Moon Phases ◽  
Temporal Synchrony ◽  
South Wales

This study describes temporal, spatial and individual variation in the diet of 255 red foxes (Vulpes vulpes) collected from agricultural land in central New South Wales from July 1994 to November 1996. Rabbits (Oryctolagus cuniculus), sheep (Ovis aries), eastern grey kangaroos (Macropus giganteus) and invertebrates were the most important food items overall. Significant seasonal variations, and sex and age differences between foxes occurred in the consumption of some food types. Some temporal synchrony was also evident, with different individuals often eating similar foods on the same night. This may have been related to moonlight. On full moon nights, foxes ate rabbits and small mammals significantly less often than during other moon phases. The management implications of variation in diet are discussed.

Trapping efficiency for foxes (Vulpes vulpes) in central New SouthWales: age and sex biases and the effects of reduced fox abundance

2000 ◽  
Vol 27 (5) ◽  
pp. 547 ◽  
Author(s):  
Barry Kay ◽  
Edward Gifford ◽  
Rob Perry ◽  
Remy van de Ven
Keyword(s):  
Vulpes Vulpes ◽  
New South ◽  
New South Wales ◽  
Trapping Efficiency ◽  
Severe Drought ◽  
Red Foxes ◽  
Drought Period ◽  
South Wales ◽  
Sex Biases ◽  
Age And Sex

A total of 276 red foxes (Vulpes vulpes) was captured over 40 597 trap-nights during 1994–96 at three separate sites in central New South Wales, resulting in an overall trapping efficiency of one fox per 147 trap-nights. Trapping using multiple trap sets placed at carcases was 3.2 times more efficient than trapping using single trap sets. During 1994–95, when two of the sites suffered a severe drought, fox abundance declined to less than 0.2 foxes km–1 of spotlight transect; trapping efficiency at those sites also declined, to an average of one fox per 315 trap-nights. Mean trapping efficiency for non-drought periods was one fox per 135 trap-nights, 2.3 times more efficient than during the drought period. In 1995 and 1996, 353 foxes were shot in areas adjacent to each site. This gave the opportunity to compare sex and age biases between the trapped and shot samples: the ratio of males to females was significantly higher in the trapped sample than in the shot sample, and there was also a significantly higher ratio of adults to juveniles in the trapped sample than in the shot sample.

Morphological change and fat accumulation in juvenile red foxes (Vulpes vulpes) in the Central Tablelands of New South Wales

2000 ◽  
Vol 27 (5) ◽  
pp. 525
Author(s):  
Roy K. Winstanley
Keyword(s):  
Body Mass ◽  
Body Fat ◽  
Vulpes Vulpes ◽  
New South ◽  
New South Wales ◽  
First Year ◽  
Male Body ◽  
Energy Reserves ◽  
Red Foxes ◽  
South Wales

Juvenile red foxes (Vulpes vulpes) reach sexual maturation within 10 months of parturition. During this time juveniles need to manage their energy reserves to fuel maintenance metabolism, growth and reproduction. To determine juvenile growth rates and body energy reserves, I measured body mass, morphology, and estimated body fat, in free-living red foxes from approximately 8 weeks of age through to 1 year old. Foxes (n = 163) were sampled monthly from August 1995 to July 1996 in the Central Tablelands of New South Wales. Mean body mass of male and female juvenile foxes was indistinguishable from adult body mass by February, at 16 weeks of age (males 4500 g, females 4200 g). Skeletal measurements of body and forelimb length in both sexes also attained adult proportions by February. Further changes in morphology were minimal in first-year foxes. Total body fat was estimated indirectly using a kidney fat index. Estimated juvenile body fat remained low and stable (6%) in both sexes from December through March. Male body fat peaked in August (11%) but was low in July during mating and also September and October whilst females were denning. Estimated body fat of females peaked in August–September (13%) but declined sharply in October after parturition. In addition, 73% of first-year females sampled during August–October were either pregnant or had recently given birth.

The reproductive performance of female red foxes, Vulpes vulpes, in central-western New South Wales during and after a drought

2001 ◽  
Vol 79 (4) ◽  
pp. 545-553 ◽  
Author(s):  
John McIlroy ◽  
Glen Saunders ◽  
Lyn A Hinds
Keyword(s):  
Litter Size ◽  
Vulpes Vulpes ◽  
New South ◽  
New South Wales ◽  
Point Of View ◽  
Corpora Lutea ◽  
Severe Drought ◽  
Red Foxes ◽  
South Wales ◽  
Conception Rates

The reproductive condition of 295 female red foxes, Vulpes vulpes, collected during and shortly after a severe drought in central-western New South Wales, Australia, was assessed to assist research on the potential use of immunocontraception. The ovulation and conception rates per vixen for the 222 foxes that ovulated were 4.62 ± 1.50 and 3.58 ± 2.18 (mean ± SD), respectively. The resorption rate and mean litter size per vixen for the 188 foxes that were pregnant were 0.47 ± 0.92 and 3.75 ± 1.91, respectively. Details of the parameters are provided for each age-class. The proportion of the overall population that was pregnant was 0.847. Conception rates and litter sizes peaked in fifth- and sixth-year vixens, but vixens over 8 years of age produced as many cubs as first-year breeders did. Vixens collected during 1996, when rainfall was above average, contained significantly more corpora lutea than vixens collected during the drought years 1994 and 1995. There were no significant differences in other reproductive parameters (i.e., conception and resorption rates, litter size, and proportion of the population that was pregnant) between the 3 collection years. Mating occurred within a 3- to 7-week period from mid-June to the end of July and births from early August to late September. From a practical point of view, vixens will need to be targeted with immunocontraceptive baits in autumn.

Diets of sympatric red foxes Vulpes vulpes and wild dogs Canis lupus in the Northern Rivers Region, New South Wales.

2006 ◽  
Vol 28 (1) ◽  
pp. 101 ◽  
Author(s):  
A. S. Glen ◽  
A. R. Fay ◽  
C. R. Dickman
Keyword(s):  
Canis Lupus ◽  
Vulpes Vulpes ◽  
New South ◽  
New South Wales ◽  
Red Foxes ◽  
South Wales ◽  
Northern Rivers ◽  
Wallabia Bicolor ◽  
Wild Dogs ◽  
Swamp Wallaby

In the Northern Rivers region of New South Wales the diets of sympatric foxes (Vulpes vulpes) and dogs (Canis lupus) were determined from analysis of oportunitically collected scats. Mammalian prey dominated the diet of both species but foxes had a more diverse diet than dogs. The red-necked pademelon (Thylogale thetis) had the highest occurrence in both predators. the northern brown bandicoot (Isoodon macrourus) was the second most common prey of the fox but did not occur in dog scats. Swamp wallaby (Wallabia bicolor) was more common in dog scats than fox scats.

Seed production and seedling emergence of Giant Parramatta grass on the north coast of New South Wales

1996 ◽  
Vol 36 (3) ◽  
pp. 299 ◽  
Author(s):  
TS Andrews ◽  
RDB Whalley ◽  
CE Jones
Keyword(s):  
Seed Production ◽  
Seed Bank ◽  
New South ◽  
New South Wales ◽  
Seed Banks ◽  
North Coast ◽  
The North ◽  
South Wales ◽  
Seed Fall ◽  
The Impact

Inputs and losses from Giant Parramatta grass [GPG, Sporobolus indicus (L.) R. Br. var. major (Buse) Baaijens] soil seed banks were quantified on the North Coast of New South Wales. Monthly potential seed production and actual seed fall was estimated at Valla during 1991-92. Total potential production was >668 000 seeds/m2 for the season, while seed fall was >146000 seeds/m2. Seed fall >10000 seeds/m2.month was recorded from January until May, with further seed falls recorded in June and July. The impact of seed production on seed banks was assessed by estimating seed banks in the seed production quadrats before and after seed fall. Seed banks in 4 of the 6 sites decreased in year 2, although seed numbers at 1 damp site increased markedly. Defoliation from mid-December until February, April or June prevented seed production, reducing seed banks by 34% over 7 months. Seed banks in undefoliated plots increased by 3300 seeds/m2, although seed fall was estimated at >114 000 seeds/m2. Emergence of GPG seedlings from artificially established and naturally occurring, persistent seed banks was recorded for 3 years from bare and vegetated treatment plots. Sown seeds showed high levels of innate dormancy and only 4% of seeds emerged when sown immediately after collection. Longer storage of seeds after collection resulted in more seedlings emerging. Estimates of persistent seed banks ranged from 1650 to about 21260 seeds/m2. Most seedlings emerged in spring or autumn and this was correlated with rainfall but not with ambient temperatures. Rates of seed bank decline in both bare and vegetated treatment plots was estimated by fitting exponential decay curves to seed bank estimates. Assuming no further seed inputs, it was estimated that it would take about 3 and 5 years, respectively, for seed banks to decline to 150 seeds/m2 in bare and vegetated treatments.

Up the Garden Path? Enterprise Bargaining and Decentralization in the NSW Public Sector

1995 ◽  
Vol 37 (2) ◽  
pp. 203-217 ◽  
Author(s):  
Michael O'Donnell
Keyword(s):  
Public Sector ◽  
New South ◽  
Industrial Relations ◽  
New South Wales ◽  
Green Paper ◽  
Garden Path ◽  
Reform Agenda ◽  
The Public ◽  
South Wales ◽  
The Impact

Decentralizing industrial relations within New South Wales is a central recom mendation of the Niland Green Paper (1989). Decentralism also represents the cornerstone of the New South Wales government's industrial relations reform agenda enshrined in the New South Wales Industrial Relations Act 1991. To date there has been little analysis of the impact o f this legislative change on industrial relations in the New South Wales public sector. This paper provides a case study that examines the degree to which responsibility for bargaining has been devolved within the Parks and Gardens of the New South Wales Ministry for the Environ ment. It argues that, in contrast to the rhetoric of the New South Wales Act, the central agency presiding over the introduction of enterprise bargaining in the public sector, the Public Employment and Industrial Relations Authority; has been reluctant to delegate responsibility to parties in the workplace.

Sign in / Sign up

Export Citation Format

Share Document