The Mediterranean Basin is a climate change and biodiversity hot spot, and climate change threatens its agroecosystems including olive, an ancient drought-tolerant crop of considerable ecological and socio-economic importance. Climate change will impact the interactions of olive and the obligate olive fruit fly (Bactrocera oleae) and affect the economics of olive culture across the Basin. … Continue reading Bioeconomic analysis of olive in the Mediterranean Basin
Economic analysis of chemical pesticide use has shown that the interactions between plants, pests, damage control technology and state of the ecosystem are important variables to be considered. Hence, a bio-economic model was developed for the assessment of Bt variety and pesticide-based control strategies of the cotton–bollworm in China. The model simulates plant growth, the … Continue reading Transgenic cotton in China under ecosystem disruption
The bumblebees, a group of bees with more than 250 species worldwide, are one of the three groups of bees which show a well-developed social behavior. They are present in most of the bio geographical regions of the world, but the Ethiopian, Australian, and Oceanic. The group is especially diverse in the Paleartic and Oriental regions, and is well represented in the new world, especially in the Western Neartic and Western Neotropical regions. The group was recently organized in 15 subgenera, three of them with species in the neotropics.
The effectiveness of international research and development efforts in Africa has been questioned on scientific, administrative and social grounds, and for the lack of conceptual models to place observed eco-social change in interpretive dimensions. To illustrate how the latter problem may be addressed, we examine the ongoing suppression of trypanosomiasis disease affecting cattle in an … Continue reading East African Agro-pastoral Systems with Multiple Disease Constraints
A key constraint for development of many East African agro-pastoral communities is African animal trypanosomiasis or nagana caused by Trypanosoma spp. and vectored by species of tsetse flies (Glossina spp.). Suppression of trypanosomiasis through trapping of tsetse fly populations was conducted from 1995 to 2005 at and near Luke, Southwest Ethiopia. Odor baited mass trapping … Continue reading Tsetse Fly Trypanosomiasis System