Mosquitos: Species, Distribution and Disease opens with a discussion on the potential use of plant-derived saponins as a natural larvicide to help prevent and control disease outbreaks in mosquito-infested areas. The general background of saponins, examples of saponin-containing plants and the uses of crude saponins are furthermore discussed. The authors develop practical perspectives on controlling tropical disease vectors in an eco-friendly manner. The authors also provide updated lists of the mosquito species present in the eastern states of the Arabian Peninsula, with information on their collection sites and distribution. New records of some adults are published for the first time from Qatar. An investigation of the morbidity of epidemic vector-borne diseases is also considered. Intracellular population dynamics of viruses under a set of biologically sound parameter values are studied, and statistical tools are used to quantify the estimability of model parameters under distinct scenarios. The resulting mathematical model can also be applied in clinical settings where there is a growing body of work on the within-host dissemination of flaviviruses.

Bee hives. They might look at first glance like seething anarchy, but the bees know exactly what they are doing. With astounding skill, precise expertise and impressive teamwork they carry out their plans. The Honey Factory plunges the reader into the life of a colony of bees and takes them on a tour of their 'factory'. This is a world inhabited by headstrong individuals with clever methods and an amazing set of rules. Why aren't male bees allowed to stay in their colony just as it is getting cosy? What lies behind the sexual excesses of a young queen bee? And how do all the bees in a hive come to collective decisions? The Honey Factory answers these questions and more. Combining the most fascinating discoveries and greatest secrets in bee research, it ultimately shows readers why bees are so precious and why humans and bees cannot survive without each other.

This volume is an account of the scientific and social responses made to the discovery of an invasive forest insect - the emerald ash borer or EAB (Agrilus planipennis Fairmaire, 1888) - in North America, that was formally announced in July 2002. Since its recognition, this wood-boring beetle has become one of the most destructive and costly exotic species ever encountered. More than $300 million in federal USDA-APHIS funds (alone) have been devoted to battling this pest, which has killed some tens of millions of ash trees, chiefly within southeastern Michigan and surrounding states. EAB has now been found in 28 states and two Canadian provinces. But those numbers are almost certain to keep growing in coming years. While primarily a case study, this work nonetheless examines larger issues concerning invasive species as a whole, their inadvertent transport and worldwide spread through the rise of globalization, regulations that have been adopted to prevent their introduction, and the successes or failures of state and federal agencies to try and enforce those regulations. It offers the first general work of its kind to appear on the ash borer that is directed towards a broad audience including the public, entomologists and foresters, environmentalists and ecologists, researchers, regulators, and indeed anyone who wishes to learn more about this important and timely topic. No previous knowledge of EAB or invasion biology is assumed. This book covers all of the major aspects of scientific research and management that have occurred since EAB was recognized in 2002. It is thoroughly researched and draws from the best available data and sources, which represent (a) archival materials; (b) scholarly publications and conference proceedings; (c) interviews conducted with leading participants in the EAB program; (d) selected newspaper/magazine articles; and (e) reputable sources found on the Internet (e.g., USDA-APHIS).