Your search for 'feral pigs' returned 20 results.
Feral pigs (Sus scrofa) are believed to have a severe negative impact on the ecological values of tropical rainforests in north Queensland, Australia. Most perceptions of the environmental impacts of feral pigs focus on their disturbance of the soil or surface material (diggings). Spatial and temporal patterns of feral pig diggings were identified in this [...]
This two-year study examined the impacts of feral pig diggings on five ecological indicators: seedling survival, surface litter, subsurface plant biomass, earthworm biomass and soil moisture content. Twelve recovery exclosures were established in two habitats (characterised by wet and dry soil moisture) by fencing off areas of previous pig diggings. A total of 0.59 ha [...]
Cane toads, swamp buffalo, feral pigs ? some of the most visible ‘wildlife’ in World Heritage-listed Kakadu National Park happen to be the rampantly successful progeny of feral animals introduced by European settlers from the 1820s onwards. Controlling them within this ecologically and culturally complex setting is the ongoing challenge.
Non-indigenous animal species threaten biodiversity and ecosystem stability by damaging or transforming habitats, killing or out-competing native species and spreading disease. We use World Heritage Area Kakadu National Park, northern Australia, as a focal region to illustrate the current and potential threats posed by non-indigenous animal species to internationally and nationally recognised natural and cultural [...]
Following a bait-preference pilot study on captive feral pigs, a series of field studies assessed the attractiveness and target-specificity of a prototype manufactured feral pig bait (PIGOUT®). Two promising test baits and fresh meat reference baits were biomarked with iophenoxic acid and aerially distributed in 100-km2 blocks of land infested with feral pigs in western [...]
The effect of feral pigs and weka on the abundance, composition and biomass of above- and below-ground macro-invertebrates was assessed every November over 3 years at two sites where pigs and weka, just pigs, and neither species were excluded on Attempt Hill, D’Urville Island. The large carnivorous snail Powelliphanta hochstetteri obscura increased both inside and [...]
Twenty-nine farms with a prevalence of greater than 20% of hydatidosis in cattle were visited in south eastern Queensland between August and December 1982. All farms carried beef cattle but none sheep. Twenty-four had dingoes and wallabies but only 8 had feral pigs. On 17 farms either macropods were killed for dog food or dogs [...]
Unlike many regions in the world where wild pigs (Sus scrofa) are threatened, in Australia they are a significant invasive species. As such, the molecular ecology of feral pigs was investigated to understand their social and population genetic structure. Samples from 269 adult animals were collected over their distribution in southwestern Australia.
We describe an approach to modelling the spatio-temporal spread of foot and mouth disease through feral animal and unfenced livestock populations. We used a susceptible-infected-recovered model, implemented in a cellular automata framework, to assess the spread of FMD across two regions of Queensland, Australia. Following a sensitivity analysis on the infectious states, scenario analyses were [...]
Carpal glands (CG) of 105 feral pigs Sus domesticus, caught in the tropical lowland rainforest in northeast Queensland, Australia, between 1999 and 2004, were investigated to examine their function in chemical communication between animals, and their histology. Female feral pigs show significantly larger CG on the right leg than on the left leg while there [...]
The question “When should investment in pest control stop?” either explicitly or implicitly underpins decisions concerning pest control made at every level of enterprise or government, regardless of whether these decisions are tactical or strategic. Bioeconomic modeling provides a quantitative framework for considering the benefits and costs of alternative pest control strategies. In this case [...]
The oral toxicity and acceptability of warfarin, brodifacoum and phosphorus to captive feral pigs were assessed in dose-response studies and preference tests. The LD50 and LD90 (with 95% fiducial limits) for these toxins ingested in wheat bait were: warfarin (two consecutive doses separated by 24 h) LD50 2.9 mg kg-1 (l.8-5.2), LD90 6.1 mg kg-1 [...]
Surveillance strategies for detecting disease in wildlife are reviewed. Opportunistic and structured surveillance schemes are examined, and the detection of foot and mouth disease (FMD) in feral pigs (Sus scrofa) in Australia discussed in more detail. The probability of detecting an individual case of FMD in feral pigs in Australia with the current opportunistic surveillance [...]
In this study the home-range sizes of feral pigs (Sus scrofa) at Nocoleche Nature Reserve, semi-arid New South Wales were measured by radio-telemetry over the course of a drought. The abundance of food was indexed simultaneously by the amount of pasture in the four most common habitats at Nocoleche (shrubland, woodland, riverine woodland, and ephemeral [...]
The effect that the proximity of habitats containing essential resources has on animal abundance at large spatial scales is called landscape complementation. Landscape complementation can influence interaction between large herbivores and their food resources where the proximity of habitats containing essential resources constrains their foraging or demographic efficiency. We tested the effect that the proximity [...]
Experiments were conducted which examined the toxicity and acceptability of warfarin and 1080 poison to penned feral pigs. Warfarin was very toxic and highly acceptable. Maximum mortality was 11 of 12 at 0.08% concentration for 2 or 3 days, or 0.1% concentration for 2 days. 1080 toxicity was 2 of 19 at 0.05% for 1 [...]
Post-mortem investigations of 207 feral pigs poisoned in the field were conducted to assess the influence on 1080 dose of bait type, site, sex, bodyweight and distance from bait stations. The stomachs of most (126/207) pigs contained only bait material. Bait type significantly affected intake and 1080 dose, with pellet intake greater than cereal baits. [...]
The influence of high temperature and the distribution and abundance of pasture on variation in adult body weight of feral pigs was examined at Nocoleche Nature Reserve, semi-arid New South Wales, over the course of a drought. The influence of the pigs sex, and the mean maximum environmental temperature and pasture biomass on the adult [...]
Both fermenting wheat and bran/pollard pellets were readily accepted as bait throughout the year by feral pigs (Sus scrofa) in Namadgi National Park, A.C.T. Birds mainly ate wheat bait, particularly during winter. Other animals occasionally fed on both types of bait, mainly during autumn and winter. Covering baits with forest-floor litter did not significantly affect [...]
Three ageing techniques were tested on samples of wild-caught feral pigs from subalpine (n=35) and semi-arid (n=64) areas in eastern Australia, and on a sample of known-age captive feral pigs reared from stock from semi-arid areas (n=15). Techniques employed were based on morphometric relationships, patterns of tooth eruption and wear, and counts of cementum lines [...]