Effects of Photofrin II on adults of Eretmapodites quinquevittatus.

This research was conducted to further assess the efficacy of photosensitizers as adult mosquito control agents. Fourth-stage larvae of Eretmapodites quinquevittatus were fed Photofrin porfimer sodium (PII) (< or = 3.75 microg/ml) and the resulting adults (parentals) were photoirradiated.

Site of Photofrin II photosensitization in larvae of Eretmapodites quinquevittatus Theobald.

Photofrin II (PII) accumulates and fluoresces in the alimentary canal, anal papillae, malpighian tubules, rectum, and gastric caeca at greater concentrations (>10 microg/ml) and accumulates (fluoresces) in (along) the alimentary canal only at lower concentrations (< or =10 microg/ml). Initial experiments with larvae exposed to different osmotic conditions and PII indicated that cells of osmoregulation were most susceptible to life-threatening cell damage. Larvae that lacked anal papillae and were exposed to different osmotic conditions and PII indicated that cells of osmoregulation may not be the most deleterious site for cell damage.

Organophosphate and pyrethroid susceptibilities of Culex salinarius adults from Texas and New Jersey.

Susceptibilities of adults from newly established colonies of Culex salinarius from New Jersey and Texas to commonly used mosquito adulticides were assessed using the insecticide-coated vial bioassay technique. Females from both colonies were similar in their susceptibilities to naled, chlorpyrifos, resmethrin, and permethrin. However, females from the New Jersey colony (established from collections made in Cape May County, NJ) were found to be 9 times more tolerant to malathion than were those from the Texas colony (established from collections made in Chambers County, TX), with median lethal concentration values for malathion tested against these 2 colonies of 0.

Photosensitization of Eretmapodites quinquevittatus Theobald (Diptera: Culicidae) eggs and larvae with Photofrin II.

The susceptibility of Eretmapodites quinquevittatus eggs and larvae to photosensitization with Photofrin II (PII) was determined. Hatching rates of eggs (5 min to 2 h after oviposition with no PII exposure) exposed to solutions of PII (90 micrograms/ml) in the dark for 12 h, before photoirradiation for 72 h. were very similar to those of untreated controls (P > 0.

Fecundity, fertility, and developmental stage survivorship of Eretmapodites quinquevittatus.

This laboratory study analyzed fecundity, fertility (percentage hatched), and developmental stage survivorship of Eretmapodites quinquevittatus. Fecundity for females averaged 190.4 eggs, whereas paired (one male/female pair) females averaged 100.

Differences in male mating response and female flight sounds in Aedes aegypti and Ae. albopictus (Diptera: Culicidae).

Aedes aegypti (L.) and Ae. albopictus (Skuse) showed similar rates and timing of insemination in the laboratory.

A model for polygenic inheritance of abdominal tergal scale pattern in Aedes aegypti.

There is much variation in the amount of white scaling on the abdominal tergites of Aedes aegypti. The genetic basis for this white scale pattern was investigated in two laboratory strains established by selection from the CARN Strain of Ae. aegypti.

Hybridization between Aedes simpsoni and Aedes woodi with observations on the genetic basis of morphological differences.

The public health importance of the genus Aedes makes it imperative that a better understanding of the genetic differences and isolating barriers between the species be developed. Aedes simpsoni and Aedes woodi from near Dar es Salaam, Tanzania, were used in this investigation. Analysis of F(1), F(2), and backcross progeny obtained from forced matings indicates that single factors form the genetic basis of some of the differences between the two species.