I investigated whether Neogobius melanostomus, an invader of biodiversity “hot-spots” in Ontario facilitates or inhibits unionid mussel recruitment by serving as a host or as a sink for their parasitic larvae (glochidia). Infestation and metamorphosis rates of four mussel Species at Risk (Epioblasma torulosa rangiana, Epioblasma triquetra, Lampsilis fasciola, and Villosa iris) and one common species (Actinonaias ligamentina) on N. melanostomus were compared to rates on known hosts in the laboratory. All species successfully infested N. melanostomus, but only E. triquetra, V. iris, and A. ligamentina successfully metamorphosed, albeit at low rates. Neogobius melanostomus collected from areas of unionid occurrence in the Grand and Sydenham rivers exhibited body burdens of 39.4% and 5.1%, respectively. Analyses indicate that N. melanostomus serves more as a sink for glochidia than as a host for unionids, thereby limiting recruitment, which is a novel way by which N. melanostomus is affecting native mussel species.

Thesis (M.S.) -- Central Connecticut State University, 2008. / Thesis advisor: Peter A. Kyem. "... in partial fulfillment of the requirements for the degree of Master of Science in International and Area Studies." Includes bibliographical references (leaves 78-83). Abstract available via the World Wide Web.

Thesis (M.S.)--University of Chicago, 1915. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 129-134).

Thesis (M.A.)--Catholic Theological Union at Chicago, 2004. / Vita. "October 2004." Includes bibliographical references (leaves 188-197).

Thesis (M.A.)--Catholic Theological Union at Chicago, 2004. / Vita. "October 2004." Includes bibliographical references (leaves 188-197).

I evaluated diet and food selection of 5 species of spring-migrating female waterfowl including 3 dabbling ducks (Blue-winged teal, Anas discors, Mallard, Anas platyrhynchos, Gadwall, Anas strepera) and 2 diving ducks (Lesser Scaup, Aythya affinis, and Ring-necked duck, Aythya collaris). Diet was evaluated with regards to the proportion of invertebrates and seeds consumed, and compared to forage availability data collected in habitats available to them at 6 study locations throughout the Upper Mississippi River and Great Lakes Region. I found latitude (i.e., stage of migration), longitude, food availability, and date all influenced the diet of spring migrating waterfowl, with some factors having a stronger influence than others. I observed differing diet trends with regard to foraging guild (e.g., dabbling and diving ducks), as each foraging guild was represented by 1 species that was heavily dependant on invertebrates (dabbling duck - Blue-winged teal; diving duck - Lesser scaup) and 1 species that was heavily dependant on seeds (dabbling duck - Mallard; diving duck - Ring-necked duck). The proportion of invertebrate foods in the diet increased throughout spring for all species of waterfowl, suggesting the importance of invertebrate food sources during spring staging. Data from this study provides valuable information to habitat managers and conservationists wishing to improve spring habitat conditions for migrating waterfowl, which likely influences waterfowl productivity.

The Great Lakes region covers central, eastern and some parts of southern Africa. It is situated strategically in the middle of the African continent and its stability, peace and development is imperative for the African continent. Inter and Intra-state conflicts have gone on in the region for the past couple of decades. These conflicts, which threatened to become a regional war, seem to have come to an end, but have left terrible reminders including the presence of masses of internally displaced persons. Various attempts have been made within the Great Lakes at state and regional level to address the issue of internal displacement. This study has highlighted these attempts while outlining the major setbacks and the gaps manifesting in existing institutional and legal framework. The study further has proposed the need for a comprehensive legal framework which should among other things codify the standards of protection; provide for the means and institutions of coordinating protection and assistance in all phases of displacement; serve as a legal basis for coordinating various regional and international actors and agencies involved in providing protection and assistance for internally displaced persons in Africa; highlight the measure or level of political will to achieve this; and finally provide means of monitoring such protection and assistance and ensure compliance by states. The study has also highlighted that existing frameworks, legal and institutional within the Great Lakes region and through additional aid from international mechanisms and actors are not adequate to resolve the issue of internal displacement within the region permanently and find durable solutions to millions of people laboring from protracted displacement. The study suggests alternative reliance on African systems and their conceptual contribution to the resolution of conflict and displacement in Africa and the Great Lakes in particular. The Final part of the study looks at national attempts to address the problem of internal displacement. Kenya and Uganda are discussed and contrasted in depth whilst highlighting their similarities and differences in addressing internal displacement. Both countries have at one point or the other experienced internal displacement, although not necessarily on the same scale, dynamics, time frame or even severity. They both seem to have taken incredible steps to address the issue of internal displacement including drafting policies, laws as well as assigning responsibilities for the displaced to specific ministries of government. Internally displaced persons in both countries seem to be in the process of returning home, even though at very different scales, and not always necessarily as a durable solution. These two countries have been used as case studies for identifying the domestic process of addressing internal displacement as well as determining the degree of comprehensiveness of the frameworks set up to address internal displacement. / Thesis (LLD)--University of Pretoria, 2012. / Jurisprudence / unrestricted

Philosophiae Doctor - PhD / This dissertation is an exploration of everyday social interactions among and between migrants from the Great Lakes Region and South Africans, who live together as neighbours in a post-apartheid South African community. It focuses on the ways through which migrants who are diverse among themselves forge social relations with one another and with the South Africans in an urban township of lower middle class setting. It is an ethnography that interrogates the understandings of belonging and difference in concrete arenas of interaction in these two groups, and how they both mediate their diversity encounters in everyday life.

Alternative reproductive tactics (ARTs), occur where members of one sex of a species have two or more strategies of obtaining fertilization. The tactics differ in behavioural approaches to reproduction, but also commonly differ in physiological and morphological traits. The round goby, Neogobius melanostomus, is a globally invasive species with male ARTs. How behaviour may influence invasiveness in round goby has been of recent interest, but researchers have not considered the role or impact that male ARTs may have. I compared guarder and sneaker male round goby, assessing differences in their boldness, activity, exploration, sociality, aggression, startle responses, and dispersal tendencies. Sneaker males were more bold, active, and explorative while guarder males were more aggressive. In addition, I studied whether more guarders or sneakers are caught in a population survey study and how variation in a common round goby trapping method, minnow traps, may create catch biases. Two commonly employed minnow trap models include a black vinyl plastic coated metal trap (black traps) and a galvanized metal steel trap (silver traps). I investigated whether these black and silver traps and baited (corn) and unbaited traps differ in terms of the numbers, ART ratios, and sizes of round goby captured. I found silver traps captured 1.7 times more round goby than black traps, while baited traps captured 3.4 times more round goby than unbaited traps. Baited traps captured larger round goby and tended to capture more guarders than unbaited traps. I also found black traps captured larger males, but there was no difference in the size of females captured. Taken together my results indicate that care needs to be applied when making estimates of round goby populations in terms of the types of individuals present and the trapping method used. / Thesis / Master of Science (MSc)

Yes / Sida requested the Helpdesk to present a ‘snapshot’ and analysis of the problem of conflict minerals in the Great Lakes region, and particularly of the Democratic Republic of Congo (DRC). In anticipation of instructions in the forthcoming country/results strategy for the DRC, Sida will use the report in order to identify possible Swedish efforts in the field. Sida requested that report should be presented with both a perspective on the Great Lakes region in general, as well as a more detailed analysis of the situation in DRC in a regional perspective.