Infanticide in Chimpanzees: Taphonomic Case Studies from Gombe

Objectives We present a study of skeletal damage to four chimpanzee (Pan troglodytes) infanticide victims from Gombe National Park, Tanzania. Skeletal analysis may provide insight into the adaptive significance of infanticide by examining whether nutritional benefits sufficiently explain infanticidal behavior. The nutritional hypothesis would be supported if bone survivorship rates and skeletal damage patterns are comparable to those of monkey prey. If not, other explanations, such as the resource competition hypothesis, should be considered. Methods Taphonomic assessment of two chimpanzee infants included description of breakage and surface modification, data on MNE, %MNE, and bone survivorship. Two additional infants were assessed qualitatively. The data were compared to published information on monkey prey. We also undertook a review of published infanticide cases. Results The cases were intercommunity infanticides (one male and three female infants) committed by males. Attackers partially consumed two of the victims. Damage to all four infants included puncture marks and compression fractures to the cranium, crenulated breaks to long bones, and incipient fractures on ribs. Compared to monkey prey, the chimpanzee infants had an abundance of vertebrae and hand/foot bones. Conclusions The cases described here suggest that chimpanzees may not always completely consume infanticide victims, while reports on chimpanzee predation indicated that complete consumption of monkey prey usually occurred. Infanticidal chimpanzees undoubtedly gain nutritional benefits when they consume dead infants, but this benefit may not sufficiently explain infanticide in this species. Continued study of infanticidal and hunting behavior, including skeletal analysis, is likely to be of interest

Analysis of C Programs with Dynamic Linked Data Structures

Táto diplomová práca sa zaoberá analýzou dynamických dátových štruktúr pomocou analýzy tvaru použitej v nástroji Predator. Popisuje zvolenú abstraktnú doménu pre reprezentáciu pamäte vo forme symbolických grafov pamäte. Ďalej sa zaoberá návrhom prostredia pre vývoj statických analyzátorov nad clang/LLVM. Prínosom tejto práce je vytvorenie a otestovanie transformačných priechodov zjednodušujúcich LLVM IR medzikód. Ďalším prínosom je optimalizácia parametrov paralelnej nadstavby Predatora opakovaným spúšťaním testov z medzinárodnej súťaže SV-COMP'16, kde táto verzia nástroja Predator získala zlatú medailu v kategórii Heap Data Structures. Posledným prínosom je návrh architektúry samotného verifikačného jadra s ohľadom na SMG doménu.This master's thesis deals with the analysis of dynamic linked data structures using shape analysis used in the Predator tool. It describes the chosen abstract domain for heap representation - symbolic memory graphs. It deals with the design of framework for the development of static analyzers based on Clang/LLVM. The main contribution is implementing and testing LLVM's transformation passes that simplify the LLVM IR. Second contribution is the optimization of parameters for parallel run of several variants of the Predator tool. Parameters are tuned for benchmark from SV-COMP'16, where our tool won gold medal in Heap Data Structures category. Last contribution is the design of verification core with the focus on the SMG domain.

The emergence of reciprocally beneficial cooperation

This paper offers a new and robust model of the emergence and persistence of cooperation. In the model, interactions are anonymous, the population is well-mixed, and the evolutionary process selects strategies according to material payoffs. The cooperation problem is modelled as a game similar to Prisoner’s Dilemma, but there is an outside option of nonparticipation and the payoff to mutual cooperation is stochastic; with positive probability, this payoff exceeds that from cheating against a cooperator. Under mild conditions, mutually beneficial cooperation occurs in equilibrium. This is possible because the non-participation option holds down the equilibrium frequency of cheating.Cooperation; voluntary participation; random payoffs.

Variation in behavioral traits of two frugivorous mammals may lead to differential responses to human disturbance

Human activities can lead to a shift in wildlife species' spatial distribution. Understanding the specific effects of human activities on ranging behavior can improve conservation management of wildlife populations in human-dominated landscapes. This study evaluated the effects of forest use by humans on the spatial distribution of mammal species with different behavioral adaptations, using sympatric western lowland gorilla and central chimpanzee as focal species. We collected data on great ape nest locations, ecological and physical variables (habitat distribution, permanent rivers, and topographic data), and anthropogenic variables (distance to trails, villages, and a permanent research site). Here, we show that anthropogenic variables are important predictors of the distribution of wild animals. In the resource model, the distribution of gorilla nests was predicted by nesting habitat distribution, while chimpanzee nests were predicted first by elevation followed by nesting habitat distribution. In the anthropogenic model, the major predictors of gorilla nesting changed to human features, while the major predictors of chimpanzee nesting remained elevation and the availability of their preferred nesting habitats. Animal behavioral traits (body size, terrestrial/arboreal, level of specialization/generalization, and competitive inferiority/superiority) may influence the response of mammals to human activities. Our results suggest that chimpanzees may survive in human-encroached areas whenever the availability of their nesting habitat and preferred fruits can support their population, while a certain level of human activities may threaten gorillas. Consequently, the survival of gorillas in human-dominated landscapes is more at risk than that of chimpanzees. Replicating our research in other sites should permit a systematic evaluation of the influence of human activity on the distribution of mammal populations. As wild animals are increasingly exposed to human disturbance, understanding the resulting consequences of shifting species distributions due to human disturbance on animal population abundance and their long-term survival will be of growing conservation importance

Ethics, politics, and Nonsatiation in Consumption: A Synthesis

In contrast with the production of goods and services by firms, where the production costs are minimized under appropriate behavioral assumptions, consumer-producers in neoclassical theory maximize consumption expenditure, i.e., production costs of their outputs. According to Kenneth Boulding, were the impact upon the limited resources available on planet Earth taken into account, consumption expenditure should be minimized. We propose that we keep consumer theory as a reasonable description of reality.However,we should evaluate the long run consequences of such postulated behavior in a larger context,which, as a consequence of larger population with increasing per capita consumption, comprises the overburdening of natural resources. By decomposing the time horizon of cultural evolution into shorter periods of adjustment, we may then distinguish several types of institutional determination of how societies take decisions, as a group and individually. The consumer theory simply reflects the predominant ethical values, of which ideologies, political platforms, and demand patterns are shorter run adjustments.Consumption, Natural Resources, Political Process, Ethics

Mule Deer: A Handbook for Utah Hunters and Landowners

Mule deer are a familiar sight to residents of Utah and the Intermountain West. Sportsmen hunt them, others seek a glimpse of them while hiking or camping, drivers dodge them, and homeowners sometimes delight, sometimes fret as deer visit backyards and gardens. Deer, many of which live in the towns, cities, and farms that sprawl over their historical habitat, sometimes seem ubiquitous. Useful information about them, either scientific or practical, is less widespread. In this handbook, Dennis Austin fills that need for information, offering a one-stop reference packed with up-to-date knowledge and practical advice on mule deer. Data on deer herds, analysis of their habitat and forage needs, their seasonal cycles, understanding of their relationships with livestock and predators, wildlife management policies, what landowners should know about dealing with deer, practical considerations for hunters, and much moreýall can be found here in this complete, well-illustrated guide to the history, biology, hunting, and management of mule deer.https://digitalcommons.usu.edu/usupress_pubs/1166/thumbnail.jp

Pastoralists and Predators in Alai: Political Ecology of Wildlife Management in Kyrgyzstan

The study is devoted to the human-environmental relationships in the post-socialist period of Kyrgyzstan. It addresses the human-wildlife conflicts using the example of the Alai Valley in the south of the country. Environmental and climatic characteristics of this highland valley provide suitable conditions for pastoralism and serve as habitat for wildlife. In recent decades, the natural landscape of the region came under increasing international attention with regard to nature conservation, sustainable land management and development projects. Historically, pastoralism has played a significant role for the economy of Kyrgyzstan. Following the dissolution of the Soviet Union, the collapse of state agricultural infrastructure facilities, veterinary care, loss of markets, and privatisation of the agricultural sector of the economy and other factors have led to a major downfall in the animal husbandry industry. The number of sheep and goats decreased from ten million in 1990 to four million in 2000. Nevertheless, pastoralism has considerable importance to the national economy and remains as the crucial income source for rural livelihoods in Kyrgyzstan. The post-socialist period of Kyrgyzstan has faced rapid socio-economic and political transformation which has resulted in changes not only to local livelihoods, but also in livestock husbandry, nature protection and wildlife management. In recent decades many pastoralists often complain about the increase in livestock depredation by wild predators. It is taking place despite the presence of state sponsored predator-control activity. From another side, there are public concerns about wildlife conservation. With the engagement of many environmental NGOs and mass-media, wildlife management issues have quickly become highly politicised in Kyrgyzstan. Becoming a Party to several global environmental conventions has increased the realisation of many projects funded by external donor organisations, and the implementation of their obligations for wildlife conservation, together, have substantially raised the profile of wildlife management in Kyrgyzstan at the international level. Moreover, since the independence of Kyrgyzstan, the territory of Protected Areas has increased by three times. Protected Areas are crucial to wildlife conservation and are promoted by the nature conservation community as a beneficial measure to the mitigation of human-wildlife conflicts. Despite this fact, livestock depredation by wild predators generates conflicts and has become a serious conservation issue. The study aims to better understand human-wildlife interrelationships in connection with pastoralism, protected areas and wildlife management in Kyrgyzstan. Wildlife related conflicts are analysed to determine the status of livestock depredation and to explore its linkages with rural livelihoods and wildlife conservation concerns in the Republic. The project design emphasises different utilisation strategies for the same area of rangelands, including the provision of fodder resources, wildlife habitat area, livestock grazing, and other uses by humans. Additionally, the focus of this study is directed towards a historical aspect of the region in relation to the development processes in the Alai Valley and use of its natural resources

The Sad Story of the Northern Rocky Mountain Gray Wolf Reintroduction Program

A reflection on the past, present and future of environmental law in this 20th Anniversary Edition offers an opportunity to revisit the Endangered Species Act, particularly the Northern Rocky Mountain States federal wolf reintroduction program. Environmental programs that depend on public support for their effectiveness are problematic when the government fails to understand and compensate for this fact. This essay explores the proposition that the federal government\u27s failure to anticipate and respond to the negative reaction of people adversely affected by proposed solutions to environmental problems is contributing to a lack of progress despite great strides in our scientific understanding. This problem is particularly apparent in the Northern Rocky Mountain States federal wolf reintroduction program under the Endangered Species Act (ESA). Although wolves have thrived from a biological perspective as a result of the program, public resistance in the areas where wolves were released has not abated. That conflict may threaten to undermine the wolf\u27s extraordinary recovery now that its protections have been lifted by the U.S. Department of the Interior