The ant Pachycondyla analis (formerly Megaponera foetens, commonly known as the Matabele ant) is a widespread ponerine in sub-Saharan Africa. It feeds solely on termites of economic importance belonging to the sub-family Macrotermitinae. These termites are captured during organised raids on their nests and galleries. Previous studies mostly concentrated on certain aspects of the raiding behaviour and trail laying pheromones in this species. Thus the detailed raiding behaviour and chemically-mediated communication between P. analis and its prey are virtually unknown. The aim of this study was to undertake detailed behavioural studies on termite raiding behaviour of P. analis, and to investigate whether P. analis uses olfactory cues for intra-specific communication during termite raids, and for detecting its prey. Termite raiding behaviour of P. analis was monitored at Mpala, a Kenyan savannah for six months (April to September, 2007). During this period, raids were found to occur mainly in the mornings and evenings, with late night raids occurring during dry periods. P. analis at Mpala mainly nests under rocks and in deserted termite mounds. Microtermes and Odontotermes were the main preyed termite genera, and ant raiding behaviour was synchronised with termite prey behaviour, and was influenced by foraging costs, prey defences and rewards. Olfactometric assays showed that P. analis workers used olfactory cues in their intra-specific chemical communication, with workers responding more to volatiles of individuals of the same size class (major to major and minor to minor) than between groups. Major workers discriminated more between the volatiles of the two groups than minor workers. GC-MS analysis of volatiles from major and minor workers revealed a cocktail of 48 compounds, majority of which were hydrocarbons. Volatile compounds were colony specific and quantitative analysis showed that major and minor workers alone released 2.5 fold more volatiles than the mixed stages. This suggests that ants have the innate ability to regulate the levels of the colony odour which they make up for with higher release levels when separated from each other. Using a Mandible Opening Response (MOR) bioassay, ants were able to distinguish between nestmates and non-nestmates based on cuticular hydrocarbon (CHC) profiles. This suggests that P. analis uses CHCs as short range contact recognition cues within the nest in traditional nest protection and during raids on termite species. GC-MS analyses revealed hydrocarbons of chain lengths in the range C8-C31 in the CHC profiles, comprising mainly alkanes, alkenes and methyl-branched alkanes. The CHCs were colony and individual worker specific. Nestmate recognition in P. analis may be encoded in the alkenes and methyl-branched alkanes. Dual choice olfactometric assays revealed that P. analis uses olfactory cues in locating potential termite sources with an average of 65% of workers choosing odours against the blank (clean air). When termite odours were offered to both major and minor workers, their choices were biased towards the termite odours, with minor workers attracted more to the odours than were major workers. Although ants responded to odours from the soil obtained for the termite gallery, overall, odours from termites inside their galleries were the most attractive to ants. These results suggest that the combined odours from both the termites and gallery components (in particular soil), serves as an effective nest location cue for the ants. Comparative GC-MS analyses showed that the composition of the volatiles from the gallery soil was richer than that released by the termites. Consistent with previous studies, the volatiles of the gallery soil were found to contain hydrocarbons, naphthalene and derivatives of this compound. In conclusion, these studies have revealed the rich diversity of chemical communication cues used by this ant species for nestmate recognition and for prey location during raids in search for its food source. / Thesis (PhD)--University of Pretoria, 2010. / Zoology and Entomology / unrestricted

The increasing rate of human population growth has expanded the human-primate interface, with more conversion of natural primate habitat to agricultural land. Elevated levels of crop-raiding by primates are a by-product of natural resources becoming less available, and the nutritional riches of agricultural production becoming increasingly known to the primates. It was the aim of this thesis to focus on the Bossou chimpanzees’ (Pan troglodytes verus) perspective of their habitat in the Republic of Guinea, West Africa, the risks and opportunities presented by a human-dominated landscape, and to detail their day-to-day coexistence with humans. I combined a variety of data collection techniques, from focal, scan and ad libitum behavioural sampling of the chimpanzees’ daily activities, to broad ecological and habitat surveys. The chimpanzees rely on cultivated foods, and thus are forced to respond to humans. However, significant variation in the importance of various cultivars in the chimpanzees’ diet exists; certain cultivars are mostly fallback foods, while others are preferred food items and taken according to their availability in orchards and fields. The usage patterns of wild and cultivated foods by the chimpanzees of Bossou are thus inextricably connected. Whilst engaged in crop-raiding the chimpanzees exhibit several behavioural adaptations, namely a decrease in vocalisation levels, and increases in the transportation of food and specific vigilance behaviour. Adult males and adult male-only parties crop-raid more than other age- and sex-classes/compositions, and are more likely to take risks by raiding in exposed environments with increased risk of human confrontation. The use of human cultivars also affects the socio-sexual behaviour of the chimpanzees: chimpanzees appear to share the fruits of their risky labours (crop-raiding) as a food-for-sex strategy, which allow adult males to advertise prowess and enhance affiliative relationships with reproductively valuable females (Hockings et al., in prep). In addition, behavioural adaptations to other anthropogenic high-risk situations such as road-crossing were found, with the chimpanzees exhibiting impressive levels of socio-spatial flexibility and cooperation (Hockings et al., 2006). The chimpanzees’ level of anxiety (as measured by rough self-directed scratching) increases when dealing with some of the challenges posed by their physical and social environment. The chimpanzees of Bossou have been forced to adapt ecologically and behaviourally to the various costs and benefits of living in a human-dominated environment.

In South Africa, 2 primate species, Chacma baboons (Papio ursinus) and vervet monkeys (Chlorocebus pygerythrus), and 2 nocturnal mammals, Cape porcupine (Hystrix africaeaustralis) and bushbuck (Tragelaphus scriptus), are among many species of crop raiders. Currently, cost-effective, non-lethal solutions are lacking. From June through December 2012, I installed novel electronic scarecrows on two commercial citrus orchards and a private reserve and used video-recording remote cameras to assess cropraiders’ reactions to them in Limpopo Province, South Africa. I used focal animal sampling data from treatment and control group animals to examine differences in activity budgets and behaviors of interest between groups. Compared to animals at sites with an inactive or no scarecrow, I hypothesized that animals in the treatment group would have altered activity budgets and rates of behaviors; that they would forage or feed less, run more (as a result of being frightened), be more vigilant and thus scan their surroundings more often, and display a visible startle in response to stimuli from scarecrows. Bushbuck at treatment sites spent a larger proportion of their activity budget running, and were more often startled. However, foraging was never observed, and bushbuck in the control group scanned their surroundings more often. Porcupines at treatment sites spent a larger portion of their activity budget running, though foraging was only observed in 1 control group animal and looking was never observed. For primates, treatment (control, scarecrow) was meaningful in explaining differences in focal animal activity budgets of baboons (F = 5.49, P = 0.001) and vervet monkeys (F = 7.09, P = 0.001) as indicated by a permutational MANOVA in R. In baboons, treatment was positively correlated with running; ratios of baboons that ran to baboons that did not run differed between treatment groups (G = 15.78, P < 0.001). Treatment was negatively correlated with feeding; ratios of baboons that fed or foraged to baboons that did not feed or forage differed (G = 5.39, P = 0.02). Significant differences between groups of vervet monkeys were not found with G-tests for the same behaviors of interest. Electronic scarecrows are promising tools for human-wildlife conflict mitigation, particularly for nocturnal antelopes. For primates, further innovation in design of scarecrows to incorporate a visual stimulus is recommended.

No description available.

One of the greatest post-conflict problems in South Sudan, which has emerged as a threat to the nation’s security, has been the deadly clashes between tribes during cattle raids. This thesis examines why cattle raiding shifted from a relatively non-violent rite of passage to the primary manifestation of tribal conflict in South Sudan, and whether it is possible to reverse this shift. This thesis proposes a unique approach to the topic by analyzing two underlying causes: insecurity in Jonglei State and a breakdown of traditional governance structures – as well as how their combination has led to the shift. This thesis focuses on a case study of Jonglei State, as it has experienced the largest number of instances of conflict attributed to cattle raiding in South Sudan. Furthermore, current attempts to reduce conflict through increased security and disarmament, demobilization, and reintegration programs have failed as they only address problems of insecurity. I will be comparing two periods of cattle raiding in Jonglei: the current conflict from 2009 until the present, and a historical review of cattle raids focusing on governance of the raids. The review will not cover any specific time period as it aims to identify what aspects of the tradition contributed to a reduced scale of violence before the shift in 2009. Insecurity has caused the increase in clashes, while disconnections to traditions have caused the increase in violence. To address these problems, traditional leadership structures and the de facto rules that structured raids must be re-established in order to produce a long-term solution.

One of the greatest post-conflict problems in South Sudan, which has emerged as a threat to the nation’s security, has been the deadly clashes between tribes during cattle raids. This thesis examines why cattle raiding shifted from a relatively non-violent rite of passage to the primary manifestation of tribal conflict in South Sudan, and whether it is possible to reverse this shift. This thesis proposes a unique approach to the topic by analyzing two underlying causes: insecurity in Jonglei State and a breakdown of traditional governance structures – as well as how their combination has led to the shift. This thesis focuses on a case study of Jonglei State, as it has experienced the largest number of instances of conflict attributed to cattle raiding in South Sudan. Furthermore, current attempts to reduce conflict through increased security and disarmament, demobilization, and reintegration programs have failed as they only address problems of insecurity. I will be comparing two periods of cattle raiding in Jonglei: the current conflict from 2009 until the present, and a historical review of cattle raids focusing on governance of the raids. The review will not cover any specific time period as it aims to identify what aspects of the tradition contributed to a reduced scale of violence before the shift in 2009. Insecurity has caused the increase in clashes, while disconnections to traditions have caused the increase in violence. To address these problems, traditional leadership structures and the de facto rules that structured raids must be re-established in order to produce a long-term solution.

The recent history of the Turkana of northern Kenya has rarely been explored in detail, a fact that corresponds with, and to a large extent facilitates, their regular portrayal in the popular press as passive, unchanging and therefore vulnerable in the face of ongoing and ensuing socio-economic transformations. Such visions of the Turkana and the region in which they live have, via their manifestation in the policies and practices of development-orientated interventions, actively inhibited (although never fully arrested) the fulfilment of various local desires and aspirations over the years. In addressing these topics, this thesis provides some hitherto largely unexplored and unrecognised historical context to the many socio-economic and political issues surrounding Turkana's ongoing development. It discusses interdisciplinary research which combined archaeological and ethnographic techniques and was undertaken amongst communities engaged in the most prominent livelihoods that have historically underlain the Turkana pastoral economy: fishing (akichem), cultivation (akitare), herding (akiyok) and raiding (aremor). In doing so, it draws attention to some of the ways in which these communities have actively and dynamically negotiated broad economic, environmental and political transformations over the last century and beyond, thereby providing a picture of social change and long-term continuity that might serve as a means for a more critical assessment of regional development over the coming years. By weaving together a series of historical narratives that emerge from a consideration of the changing production, use and exchange of material culture, the thesis builds an understanding of Turkana's history that diverges from more standard, implicitly accepted notions of recent change in such regions of the world that envisage globalisation purely as a process of convergence or homogenisation. Its central argument, which it demonstrates using various examples, is that seemingly disruptive transformations in daily practices, social institutions, livelihoods and systems of livelihood interaction can be envisaged as articulations of longer-term continuities, emerging from a set of durable yet open-ended dispositions within Turkana society and culture. Moreover, rather than being built on a stable, passive repertoire of cultural knowledge, the thesis shows that this capacity for change is established upon a dynamic generative process where value systems and institutions are reconfigured to the same extent as daily practices and skills, as knowledge is continually reconstituted and recast in relation to the shifting constraints and possibilities of daily life. It thus characterises this process as a form of resilience that is deeply rooted in and determinant of the Turkana pastoral economy.

Résumé : Le mouvement syndical au cours des dernières années est en déclin, notamment au Québec. Plus précisément, le taux de présence syndicale était de 40,3% et il est descendu à 39.1% en 2020 (INSPQ, 2020). Mais pourquoi donc ? Plusieurs recherches ont abordé cette question en soulevant que les causes du déclin du syndicalisme sont principalement externes aux organisations syndicales (ex. : montée des valeurs individualistes) et d’autres évoquent des causes plutôt internes aux organisations syndicales (ex. : structures syndicales complexes). Toutefois, dans un contexte où les travailleurs ont l’obligation de choisir un syndicat, quels seront les facteurs qui influenceront l’adhésion syndicale de ces travailleurs ? Cette recherche tente de répondre à cette question avec le cas de l’industrie de la construction au Québec. Dans cette industrie, les travailleurs, dès leur entrée, doivent adhérer à une des cinq organisations syndicales reconnues, et ce, indépendamment des choix des autres travailleurs de son métier ou de l’entreprise pour laquelle ils travaillent. Il pourra revisiter son choix lors d’un scrutin syndical qui a lieu tous les quatre (4) ans. Pour répondre à notre question de recherche, nous présentons une revue de littérature riche sur l’adhésion syndicale ; le maraudage syndical ; l’engagement syndical ; et les facteurs explicatifs de l’adhésion syndicale. Nous consacrons notre deuxième chapitre complet à l’industrie de la construction pour bien comprendre les différents aspects de cette industrie qui ont une influence sur les facteurs d’adhésion syndicale des travailleurs. Nous présentons au chapitre trois, notre modèle concept et notre méthodologie de recherche appuyés par notre revue de littérature du premier chapitre. Avec les données statistiques que nous avons obtenues de la Commission de la Construction du Québec (CCQ), nous présentons au quatrième chapitre les résultats des maraudages de 2012, 2016 et 2020. Lors du cinquième et dernier chapitre, nous traitons des résultats obtenus au précédent chapitre, des hypothèses que nous avons émises, des limites de notre recherche et ainsi que des pistes de réflexion futures. / The union movement has been in decline in the recent years, particularly in Quebec. More precisely, the union presence rate was 40.3% and it went down to 39.1% in 2020 (INSPQ, 2020). But why? Several studies have addressed this question by pointing out that the causes of the unionism’s decline are mainly external to union organizations (e.g., the rise of individualistic values), while others point to causes that are more internal to union organizations (e.g., complex union structures). However, in a context where workers are obliged to choose a union, what factors will influence union membership among these workers? This research attempts to answer this question with the case of the construction industry in Quebec. As soon as the workers enter this industry, they must join one of the five recognized union organizations, regardless of the choices made by other workers in their trade or the company they work for. They can revisit their choice during a union vote that takes place every four (4) years. To answer our research question, we present a rich review of the literature on union membership; union raiding; union involvement; and factors that explain union membership. We devote our second full chapter to the construction industry to fully understand the different aspects of this industry that influence the factors of union membership among workers. In chapter three we present our conceptual model and research methodology supported by our literature review in chapter one. With the statistical data we obtained from the Commission de la Construction du Québec (CCQ), we present in the fourth chapter the results of the 2012, 2016 and 2020 union raids. In the fifth and last chapter, we discuss the results obtained in the previous chapter, the hypotheses we have put forward, the limits of our research and future avenues of reflection.

The Spanish colonisation of the Philippines in 1565 opened up trade between China, Latin America and Europe via the Pacific crossing, changing the history of global trade forever. The traditional understanding of the early colonial period in the Philippines suggests that colonial control spread rapidly and peacefully across the islands, ushering in dramatic changes to the social, political and economic environment of the archipelago. This dissertation argues by contrast that the extent of Spanish control has been overstated - partially as a by-product of an over-reliance on religious and secular chronicles that sought to magnify the role and interests of the colonial state. Through extensive archival work examining different sites of colonial authority and power, I demonstrate that Philippine communities contested and limited the nature of colonisation in their archipelago. In making this argument, I challenge prevalent assumptions of indigenous passivity in the face of imperial expansion. By demonstrating the agency of Southeast Asians, particular actors come to the fore in each of the chapters: Chinese labourers, indigenous elites, fugitives and apostates, unpacified mountain communities, native priestesses and Moro slave raiders. The culture and social organisation of these Southeast Asian communities impacted on the nature of Spanish imperialism and the capacity for the Spanish to retain and extend their control. Throughout the seventeenth century, the Spanish presence within the archipelago was always tenuous. A number of communities remained outside of Spanish control for the duration of the century, while still others oscillated between integration and rebellion, by turns participating in and resisting the consolidation of empire. These communities continued to maintain their local and regional economies and customs. Thus, by the end of the seventeenth century, imperial control remained fragmented, partial and incomplete. The dissertation contributes not only to the historiography of the Philippines - which remains under-explored - but also to the historiographies of Colonial Latin America, Southeast Asia and early modern empires. Conceptualising the Philippines as a frontier space helps to overturn the foundations of the myth of a completed conquest. This dissertation thus raises questions about the inevitability of empire by arguing that indigenous communities were active respondents to Spanish colonisation attempts and that indigenous traditions and culture in this region were both resilient and enduring in the face of colonial oppression.

A current topic of international debate among western geopolitical scholars concerns whether recent demonstrations of Chinese naval power represent China's adoption of an outwardly aggressive maritime strategy which might require a reactive change of approach by western nations in dealing with Southeast Asian trading interests. This paper analyzes recent developments in Chinese maritime strategy in order to determine whether the strategy is actually offensive or defensive. Drawing on a realist interpretation of international relations, a geo- strategic evaluation of the Chinese state, and a detailed understanding of the principles of maritime strategy, this paper addresses the inherent difficulty in distinguishing between offensive and defensive maritime strategies given that maritime states naturally develop power-projection forces in order to protect their Sea Lanes of Communication and maritime commerce. In an effort to discern the strategic intent underlying China's modern naval activity, this paper establishes an independent vision of China's optimal defensive maritime strategy based on the state's current threat environment, and compares those results against recent investments in China's naval power. By examining the congruency of these two positions, this work offers a contextualized...