A preliminary study of the population genetics of Aedes aegypti (Diptera: Culicidae) from Mexico using microsatellite and AFLP markers.

Dengue fever recently reemerged in the Americas. Because vaccines are still under development, dengue prevention depends entirely on vector control. Since Aedes aegypti (Linnaeus, 1762) is the principal vector of this arbovirus, knowledge of the genetic structure of the insect is therefore required to maintain effective vector control strategies and to estimate levels of gene flow from which movement can be inferred.

Isoenzymes of human lice: pediculus humanus and P. capitis.

Human lice (Phthiraptera: Pediculidae) from Africa, America and Europe were electrophoresed for 28 enzymes, with special interest in metabolic factors likely to be involved with insecticide resistance. Zymogram profiles of the body louse (Pediculus humanus L. from France and U.

Potency of products based on Bacillus thuringiensis var. israelensis: interlaboratory variations.

Six quality-control laboratories in 4 countries independently bioassayed aliquots of a flowable formulation of Bacillus thuringiensis var. israelensis (B.t.

Effects of two insect growth regulators on the susceptibility of Aedes aegypti (Diptera:Culicidae) to Molinema dessetae (Nematoda:Filarioidea).

The effects of 2 growth regulators, diflubenzuron (DFB) and OMS 2017, on the ability of females Aedes aegypti to become infected with Molinema dessetae was studied under laboratory conditions. OMS 2017 and DFB had no effect on either the amount of blood ingested or the microfilarial load. The infective potential of females that survived DFB treatment was significantly greater than untreated females, but there was no difference between OMS 2017-treated and control females.

Lactate dehydrogenase as a marker of Plasmodium infection in malaria vector Anopheles.

Lactate dehydrogenase (Ldh) electrophoresis showed the presence of Plasmodium yoelii yoelii in Anopheles stephensi and An. gambiae. The Ldh appeared as an additional band (pLdh) whose activity was more intense with 3-acetyl pyridine adenine dinucleotide as coenzyme than with beta nicotin-amide adenine dinucleotide.