Mark D Latham

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Historical outbreaks of Rift Valley fever (RVF) since the early 1950s have been associated with cyclical patterns of the El Niño/Southern Oscillation (ENSO) phenomenon, which results in elevated and widespread rainfall over the RVF endemic areas of Africa. Using satellite measurements of global and regional elevated sea surface temperatures, elevated(More)
We assessed the efficacy of ultra-low volume aerial adulticiding with 2 new water-based, unsynergized formulations of Aqua-K-Othrin (2% deltamethrin) and Pesguard S102 (10% d-phenothrin) against the riceland mosquitoes of Greece. A helicopter with Global Positioning System (GPS) navigation, real-time weather recording, and spray dispersal modeling (AgDISP)(More)
The exotic mosquito, Aedes bahamensis, is now well-established in south Florida, where it is widely distributed throughout Dade and southern Broward Counties in both urban and rural areas east of the Everglades. When discarded automobile tires were sampled in areas near human habitation, larvae and pupae of Ae. bahamensis were frequently found in(More)
A study was conducted to evaluate the impact of naled on honey bees as a result of their exposure to aerial ULV applications of this insecticide during three routine mosquito spray missions by Manatee County Mosquito Control District in Florida during the summer of 1999. Naled deposits were collected on filter paper and subsequently analyzed by gas(More)
Wind speed fluctuations measured via a 3-dimensional sonic anemometer recording at 10 Hz returned detailed information both above and within the canopy. The information returned facilitated detailed descriptions of atmospheric energy. In short, large energetic motions equal spray transfer into the target zone, the plant canopy. Data are presented on the(More)
A supporting stand to suspend rotating impactors and mosquito cages is a requirement for field tests during pesticide efficacy trials. We present schematics for a collection device and associated support system for sampling droplets of ultra-low-volume (ULV) sprays during mosquito adulticide applications. This system offers the advantages of cost(More)
The impact of the mosquito adulticide naled on honey bees, Apis mellifera L., was evaluated by exposing test beehives to nighttime aerial ultra-low-volume (ULV) applications using a high-pressure nozzle system. The tests were conducted during routine mosquito control missions at Manatee County, Florida, in summer 2000. Two treatment sites were sprayed a(More)
We assessed the nontarget effects of ultra-low-volume (ULV) aerial adulticiding with two new water-based, unsynergized pyrethroid formulations, Aqua-K-Othrine (FFAST antievaporant technology, 2% deltamethrin) and Pesguard S102 (10% d-phenothrin). A helicopter with GPS navigation technology was used. One application rate was tested per formulation that(More)
D emocracy is inefficient, because voting is a collective decision process. Your one vote has so little effect on you personally that unless you are public-spirited, you have almost no incentive to spend time studying the issues so as to vote more intelligently. Economists call this a “free-rider” problem: if you spend time on voting, the community benefits(More)
Successful integrated vector management programs may need new strategies in addition to conventional larviciding and adulticiding strategies to target Aedes aegypti and Ae. albopictus, which can develop in small, often cryptic, artificial and natural containers. The In2Care® mosquito trap was recently developed to target and kill larval and adult stages of(More)