In April 1986 an accident occurred at the nuclear power station in Chernobyl. Radionuclides were spread all over Europe including Sweden. Today there are still measurable concentrations of 137Cs in the different ecosystems in the contaminated parts of Sweden. The Wild boar is the second most popular game in Sweden and today the Swedish population consumes more Wild boar meat than ever. As the Wild boar population increases the Wild boars are moving further north towards the contaminated areas, which creates an interest to study the state of 137Cs in Wild boars in these areas. Muscle samples from Wild boars collected during 2010-2013 were analyzed based on 137Cs content.

Due to the growing Wild boar (Sus scrofa L.) population in Sweden there has been an increase in Wild boar related traffic accidents, damage on cropland, and conflicts regarding the management of the Wild boar. Knowing what makes the Wild boar reproduce and survive more or less successfully in different geographic areas is an important part of managing the population. According to previous studies the Wild boars rate of increase varies from county to county. The aim of this study was to test, on the county scale level, if landscape composition and diversity as well as people and hunter densities might be the reason for this variation. The first hypothesis was that a big proportion of forests and cropland would increase the rate of increase.

In many regulated rivers, authorities have stocked hatchery salmon to compensate for loss of Wild populations. However, hatchery fish have not always behaved as Wild fish do, and stocking them has not always fully compensated for the loss of Wild fish. The purpose of this study was to compare swimming behaviour in the river before spawning, the choice of spawning areas and body size between Wild and hatchery-reared salmon in the river Klarälven. Salmon behaviour in the river before spawning was analyzed using radio telemetry. The salmon were caught at Forshaga power plant, radio-tagged and returned to Klarälven at Ekshärad, 107 km from the river?s mouth.

The Wild boar (Sus scrofa L.) has expanded across Europe and Sweden in the last decades. It is a generalist species which utilizes a variety of habitats, and its presence has been shown to have both positive and negative effects for people and the landscape they are in. The abundance and increase of Wild boar has previously been shown to differ between counties in Sweden, but there have been few explanations as to why. In this study, I investigated correlations between the per capita rate of change (r) among Wild boar populations in Sweden and a variety of different habitats on the county level. I also investigated if fragmentation per se or in certain habitats could be associated with the Wild boar?s per capita rate of change. My results show that fragmentation/diversity per se was not correlated with Wild boar r.

Since the Wild boars (Sus scrofa) escaped from their enclosures in the 1970s, their numbers has increased dramatically. It is an animal that is currently involved in many traffic accidents. The Wild boar is a popular animal to hunt. As the population has grown so has the hunting. But, unfortunately, there have also been an increased numbers of attacks on hunters.

Problems with Wild boars are increasing in Sweden and some people argue that the Wild boar population must decrease. This is mostly the opinion by farmers, while the hunters want more Wild boars in Sweden. Today the population is the strongest in the south of Sweden and in the eastern parts of the country. However the population is growing stronger in other parts of Sweden as well. The population origins from these areas where they escaped from pens around 1970.

The Wild boar population grows rapidly in number in Sweden, and it has been predicted that the annual number of shot Wild boar will soon exceed the cull of moose. According to estimates, the Swedish population encompassed some 150 000 individuals in 2010. The mean annual harvest has increased by 30% since 1990, indicating that the Wild boar is a species we must learn to manage sustainably. A successful management of the boars aims for a population in balance with agriculture and traffic, and also provides good hunting opportunities. For this to be possible, understandings of several aspects of the ecology of Wild boar is needed. The sows in this study had an average homerange of 707 hectares during summer, and 659 hectares in winter.

The Wild boar was reintroduced to Sweden in the 1970´s from enclosures that they had escaped from and by a government decision in 1988 they were considered a part of the natural fauna again. The purpose with this report is to examine the effects of the Wild boars? reintroduction both on their welfare and on other aspects, such as how their population growth affects Sweden. This was done by gathering information from scientific literature and by performing three interviews. Another purpose is to briefly overlook live trapping and other common regulation methods.

The Wild boar (Sus scrofa) is since its recent establishment and increasing density a controversial species in Sweden. But the attitudes towards the Wild boar are poorly documented so far. To improve this knowledge, a questionnaire was sent out to chosen people (n=400) connected to the management and/or land use activities. The study got 162 replies (reply frequency 40,5%) and the results show varying attitude trends among organizations and individuals, with some aspects coherent within groups and some not. Farmers and their organization showed the most negative attitudes towards Wild boars, which was expected due to the practical and economic problems they suffer from this species. People involved with forestry were more positive to Wild boars, probably because the species does not affect forest growth etc severely, and may even promote plant establishment by the rooting.

This case study is based on a previous documented method of manufacturing artificial nest containing pre-colored hen eggs. This method is going to be used to find, if the Wild boar population, which is growing in number, is a threat to the capercaillie population.  In comparison to the Wild boar population, the capercaillie population is diminishing in different parts of Sweden.  In order to find out if they are affect by each other, the case study was carried out during the months of April to May 2009. 100 artificial nests were placed out on various locations on the Södertuna estate just in the outskirts of Gnesta. The unique aspect of this study is that a fenced environment to keep out Wild animals is used to conduct this study, which has been previously known to be free from Wild boar, but the area outside has sittings of Wild boar. So to fully understand how this affects the capercaillie population, 50 of the nests were placed outside the fence area, while the other 50 nests were placed inside the fenced area. The sites were visited on two separate occasions, and were noted of the changes inside and outside the fenced compounds.

AbstractPrevious studies have shown that Wild smolt have 2.5-4.5 times higher survival rate than smolt grown in culture and that starved reared smolt behave more like Wild born smolt. The purpose of this project was to study whether there are differences in migration patterns and survival during migration to the coast between Wild and reared smolt and between different types of reared smolt.In 2009, 25 smolts in three different groups were tagged with acoustic transmitters: Wild Born, conventionally reared 2-year and 1 ?year old smolt. For the 2010 trial there was also added a group of reared 2 ?year old smolt that were starved before release.

The purpose of this report was to investigate to which extent local presence of large herbivore mammals (Alces alces, Cervus elaphus, Capreolus capreolus, Dama dama and Sus scrofa) covaries with small rodents (Myodes glaerolus, Apodemus flavicollis and Apodemus sylvaticus? The hypothesis was that high abundance of Wild ungulates would inhibit the density of small forest rodents. The data was collected during field work within FoMA (Environmental Monitoring Assessment)/SLU (Swedish University of Agricultural Science). The Ungulate dropping inventory and rodent trappings, which is the base in this report, where performed 2012 ? 2014 in Gnesta/Nyköping municipalities (G/N) with a relatively high density of Wild ungulates and Vetlanda/Växjö municipalities (V/V) with relatively lower Wild ungulate density.

The Wild boar Sus scrofa population in Sweden has increased rapidly in the last decades which has led to conflicts among stakeholders, for example due to crop damages in agriculture. Thus, there is an urgent need of quantified goals and effective strategies for Wild boar management. To develop such strategies, knowledge on population dynamics is fundamental. In this study a deterministic matrix model was used to estimate population growth, based on previously published data. The exponential growth rate for a Wild boar population was calculated to 1.48.

Inside the south Swedish national park Dalby Söderskog, Wild boars (Sus scrofa L.) have been visiting since 2010. The presence of Wild boars has earlier been proven to impact both soil and vegetation characteristics, both positively and negatively. Still, there is a lack of knowledge regarding the rooting effect on the vegetation in deciduous forest within the native range. In this study, I have compared the field vegetation collected before and after the invasion of Wild boars in 74 permanent experimental plots. More specifically, the study aimed to qualify the effect of Wild boar rooting on cover ratio, species richness and species composition in a temperate deciduous forest.

In this essay suggested pathogenesis of secondary hypertrophic osteoarthropathy (HOA) is reviewed. HOA, characterized by; periostitis, periosteal proliferation of tubular bones and arthritis can develop due to many different underlying diseases. The syndrome is most commonly seen with intra-thoracic malignancy or chronic pulmonary infections. HOA has previously mainly been described in humans and various domesticated species. More recently, through Wildlife disease monitoring, cases have also been found among Wild animals.