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as a refuge from predators. Removal <strong>of</strong> predators allows prey to utilise less protected sites. Conversely, not changing habitat where susceptible species are present or recreating necessary habitat may also prevent fox predation. Logging activities <strong>and</strong> <strong>the</strong> establishment <strong>of</strong> roads through undisturbed habitat for example, may allow foxes to colonise new areas which contain endangered or vulnerable species (Mansergh & Marks 1993). Fertility control Targeting fox fertility may yield an effective long-term approach to reducing <strong>the</strong>ir numbers <strong>and</strong> hence lower <strong>the</strong> need to use poison baits. Lethal control will be needed to achieve a rapid reduction in fox numbers. Fertility control could <strong>the</strong>n be used strategically to maintain reduced fox numbers to provide long-term protection for threatened species. Fertility control is still at an experimental stage <strong>of</strong> development. Hormone treatment is not considered a viable option for managing populations <strong>of</strong> wild foxes as <strong>the</strong>re are no practical methods <strong>of</strong> ensuring effective treatment <strong>of</strong> unrestrained <strong>animals</strong>. Research has, however, indicated that Cabergoline may have <strong>the</strong> potential to control fox fertility in areas where poison baiting cannot be undertaken (Marks et al. 1995a, 1995b). Immunocontraception has <strong>the</strong> potential to provide a target specific form <strong>of</strong> fertility control which can be used on wild populations, but has yet to be developed. The Pest Animal Control CRC has been exploring <strong>the</strong> possibility <strong>of</strong> reducing <strong>the</strong> fox population by anti-fertility vaccination. The canine herpesvirus has been identified as potentially <strong>the</strong> most suitable virus carrier for <strong>the</strong> vaccine. Work on genetically altering this virus in such a way as to cause an immune repsonse in foxes that supresses reproduction has been conducted. A successful recombinant virus has yet to be discovered <strong>and</strong> <strong>the</strong> research will be downsized <strong>and</strong> a briefing watch maintained. Biocontrol Some form <strong>of</strong> pathogen could conceivably affect foxes on a continental scale, but currently none is known to be virulent, humane, specific to foxes <strong>and</strong> not transferable to o<strong>the</strong>r species, especially domestic dogs. Research to develop an effective biocontrol agent to manage foxes continues, however it has to address difficult scientific, technical <strong>and</strong> biological problems. Current <strong>management</strong> NSW - Ground baiting with 1080 is by far <strong>the</strong> most commonly used technique in NSW. In fact 78% <strong>of</strong> control efforts use this technique. Ground shooting is <strong>the</strong> only o<strong>the</strong>r commonly used control technique (15%), although trapping, exclusion fencing <strong>and</strong> den fumigation are used to a small degree. The most widely used technique by NPWS is broad-scale baiting (both ground <strong>and</strong> aerial) with 1080, which is <strong>the</strong> most effective <strong>and</strong> target-specific method <strong>of</strong> fox control currently available. O<strong>the</strong>r less frequently used methods are trapping, shooting, den fumigation <strong>and</strong> exclusion fencing. They are expensive, labour intensive, requiring continuing <strong>management</strong> effort <strong>and</strong> can be effective in only limited areas. Aerial baiting is used in western NSW to increase <strong>the</strong> cost-efficiency <strong>of</strong> fox control over a very large area, with <strong>the</strong> aim <strong>of</strong> protecting endangered mallee fowl populations. Aerial baiting <strong>of</strong> <strong>the</strong>se reserves is complemented by an extensive ground baiting program on surrounding properties <strong>and</strong> state forests. 122
Broad-scale cooperative programs involving several National Parks, RLPBs <strong>and</strong> local l<strong>and</strong>holders in western NSW have lowered fox numbers in <strong>the</strong>se locations. NT – Very little fox control is undertaken due to <strong>the</strong> difficulties imposed by <strong>the</strong> protection <strong>of</strong> dingoes in <strong>the</strong> Territory. This prevents <strong>the</strong> use <strong>of</strong> poisoned baits <strong>and</strong> o<strong>the</strong>r such control techniques. The Parks <strong>and</strong> Wildlife Comission is currently developing a fox-specific bait delivery system that will prevent bait consumption by wild dogs <strong>and</strong> o<strong>the</strong>r predatory scavengers. QLD – The majority <strong>of</strong> fox control is by 1080 ground baiting, supported by trapping <strong>and</strong> opportunistic shooting. The Dingo Barrier Fence runs across <strong>the</strong> south <strong>of</strong> <strong>the</strong> state <strong>and</strong> is also believed to assist in controlling <strong>the</strong> spread <strong>of</strong> foxes. SA – 1080 baiting is <strong>the</strong> most commonly used control technique in SA. Priority is given to managing foxes in high-value conservation areas <strong>and</strong> large-scale baiting programs, such as those carried out as part <strong>of</strong> Operation Bounceback, have resulted in a decline <strong>of</strong> foxes in <strong>the</strong> Flinders <strong>and</strong> Gammon Ranges <strong>and</strong> an increase in several native species such as <strong>the</strong> yellow-footed rock wallaby.. WA - Only place in Australia where aerial baiting with 1080 occurs. This is because <strong>of</strong> <strong>the</strong> native species natural tolerance to <strong>the</strong> poison. Allows efficient <strong>and</strong> costeffective baiting on a very broad-scale. In conservation reserves, 1080 fox baits are also laid out from <strong>the</strong> back <strong>of</strong> moving vehicles along fire trails <strong>and</strong> access tracks. Management <strong>of</strong> foxes in <strong>the</strong> Rangel<strong>and</strong>s Aerial baiting <strong>of</strong> foxes has been demonstrated to be an effective method <strong>of</strong> control for covering large areas provided <strong>the</strong> risk <strong>of</strong> non-target bait uptake is minimal. This method is <strong>the</strong> most effective when using 1080 baits in areas where native species have developed a natural tolerence to <strong>the</strong> poison <strong>and</strong> is suited to broad-scale control in <strong>the</strong> western parts <strong>of</strong> <strong>the</strong> Rangel<strong>and</strong>s. It has <strong>the</strong> advantage <strong>of</strong> being cost-effective <strong>and</strong> applicable to remote or inaccessible country. Where native species do not exhibit greater 1080 tolerance, integrated ground-baiting programs using buried baits can prove to be very effective although more labour intensive. All baiting campaigns require sustained efforts <strong>and</strong> should utilise environmental conditions, such as droughts or floods, for maximum effectiveness. If research into new fox specific toxins is fruitful, <strong>and</strong> a bait is developed that can be aerially delivered, it will allow for effective fox control throughout <strong>the</strong> rangel<strong>and</strong>s <strong>and</strong> create <strong>the</strong> potential for population control over extremely vast areas. In areas <strong>of</strong> high conservation value, although high cost, exclusion fencing can be effective in protecting <strong>the</strong> enclosed biodiversity, especially when combined with a baited buffer zone. Problem <strong>animals</strong> can be trapped or shot, but this will only be effective for for short-term control in small areas. 123
Page 1:
Review of<
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Contributors Andrew Norris Pest Ani
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3.7.36 Common Myna (Acridot
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Table of figures F
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Section 2 Introduction Feral <stron
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Amanda Dimmock, QD
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Section 3 A status review o
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3.4 Birds Thirteen (or 14) species
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Information on the
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Summary A rodent that contributes t
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Dingoes can become a threat to wild
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The significance of</strong
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macropods and b<st
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^Lasiorhinus krefftii North
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Perceived threat Geopsittacus occid
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conservation areas. It is less clea
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Table 8 Rare species found in <stro
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Competition Several examples are re
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In truth, camels do substantial dam
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the Tanami. Buffal
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The situation today Buffalo numbers
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qualify under IUCN criteria as enda
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3.7.16 Goat (Capra hircus) Summary
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Drakonorchis drakeoides Hinged Drag
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3.7.19 Red Deer (Cervus elaphus) Su
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Impacts Much is known about <strong
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Distribution Ostriches have won <st
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nest in tree hollows along
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Distribution The skylark is found i
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Distribution The blackbird is wides
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Land, and<
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have been translocated to o
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esources. Significant investment in
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many native species (Clarke et al.
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spread across the
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Section 4 Legislative framework 4.1
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protection, as long as it falls wit
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Native Vegetation Conservation Act
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ehabilitate existing native vegetat
Page 80 and 81: suppression, which is the</
Page 82 and 83: al. 1986, 1987). The use of
Page 84 and 85: 5.1.4 Mustering Commercial musterin
Page 86 and 87: etal. (1997) found that many native
Page 88 and 89: the vaccine <stron
Page 90 and 91: Where possible, integration <strong
Page 92 and 93: strategy, relative cost-effectivene
Page 94 and 95: Fencing Feral buffalo have a reputa
Page 96 and 97: 5.3 Management of
Page 98 and 99: Summary of <strong
Page 100 and 101: time comes for the
Page 104 and 105: Individual tracking Tracking is a l
Page 106 and 107: SA - Currently cats are not widely
Page 108 and 109: Method of control
Page 110 and 111: Aerial shooting Aerial shooting can
Page 114 and 115: 80% of export was
Page 116 and 117: ensuring effective treatment <stron
Page 118 and 119: the lower cost, wi
Page 122 and 123: conservation value rathe</s
Page 124 and 125: effort on the cont
Page 128 and 129: follow transect lines, one kilometr
Page 134 and 135: was completed it was the</s
Page 136 and 137: warren structure amenable to recolo
Page 138 and 139: Poisons Traditionally, strychnine,
Page 140 and 141: infected and steri
Page 142 and 143: of high priority.
Page 144 and 145: Method of control
Page 148 and 149: technique can allow for cost-effect
Page 152 and 153: In South Australia, between 30 <str
Page 156 and 157: % respondents 100% 90% 80% 70% 60%
Page 158 and 159: a) b) Figure 3. a) Extent o
Page 160 and 161: Figure 4 Response frequency for lik
Page 162 and 163: distribution of <s
Page 164 and 165: Section 7 Key problems and<
Page 166 and 167: • Goats degrading temperate woodl
Page 168 and 169: conservation problems in Europe <st
Page 170 and 171: message that camels are a valuable
Page 172 and 173: In the Koolatong R
Page 174 and 175: environmental degradation’ (Nor<s
Page 176 and 177: ecause dingo and d
Page 178 and 179: Various control methods have been a
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Pascale Taplin, an Indigenous L<str
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Lack of a Strategi
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eradicated after seeing the
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In some situations, payment <strong
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could have led to better protocols
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Game hunting is a growing business,
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Much as we might like it, t
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conservation outcome. In such a sit
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community consultation and<
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• Have the non-t
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provide opportunities for strategic
Page 202 and 203:
Section 9 Priorities for investment
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contacted for exact locations <stro
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way. Achilles heel research should
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efficient in any given situation. R
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west Queensland re
Page 212 and 213:
Crossland, MR, 199
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Forsyth, DM, and P
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Lange, RT, and Gra
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Morgan, LA and But
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Parkes, JP, 1990, Feral goat contro
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Van Rensberg, PJJ, Skinner, JD, <st
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Appendix A Ferals animals</
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Indigenous lands I
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Appendix B Stakeholder survey form
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222
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224
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226
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Appendix C Database on past NHT fun
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Lachlan Rehabilitation of</
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Northern Territory
Page 242 and 243:
Cape York Ambiilmungu-Ngarra tradit
Page 244 and 245:
Wet Tropics Expansion and</
Page 246 and 247:
Avon Protecting and</strong
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