Comparison of malaria situation in a forested foot-hill area of Bago division between monsoon and cool-dry season

During exploratory survey by Medical Entomology Research Division, Department of Medical Research to select areas for anopheline ecology studies, Tha-bye-wa village, Oktwin Township, Bago Division was found to have a very high malaria parasite rate and also high vectors density as well as a rich mosquito fauna. The results of survey carried out in momsoon season and in the cool/dry season were compared and the epidemiological situation discussed.

Preliminary report on the morphological variations of Anopheles (cellia) minimus adult females

Anopheles minimus is a common anopheline species in Myanmar, especially in the forested foot -hill areas. During routine survey many variations in adult morphology were noted. Iso-female lines were raised from wild-caught female and the morphological variations in F1 adults were studied. At the same time the identification of specimens was confirmed by detailed examination of larval skin slides. A guide for field workers on identification of An.minimus was also presented.

Anopheline mosquitoes of Myanmar. 3: Anopheles (cellia) Philippinensis Ludlow, 1902 & Anopheles (cellia) nivipes (Theobald), 1903 in Myanmar and their differentiating characters

Malaria workers in Myanmar have only recorded the prevalence of Anopheles philippinensis in the country and anopheles nivipes have not yet been identified in Myanmar. The Department of Medical Research (DMR) survey teams to Tha-bye-wa, Oktwin Township collected many specimen provisionally identified in the field as An. philippinensis. Iso-female lines were raised from wild caught female to preparelarval skin, pupal skin and adult specimens for detail morphological examination. The specimens collected from the forested foot-hill area of Tha-bye-wa was found to be An. nivipes, which was recorded for the first time in Myanmar. The distribution,seasonal prevalence, adult bionomics and larval habits for both species, as described by previous wprkers were compared with the observations of the DMR survey teams.

Description of currently unknown larval and pupal forms of Aedes (Aedimorphus) nigrostriatus (Barraud), 1972

During routine mosquito collections in a rice cultivation area near Yangon, one blood fed Aedes (Aedimorphus) nigrostriatus female was collected. It was allowed to oviposit and a colony was raised. Adult specimens, male teminalia slides, pupal and larval skin slides were prepared and preserved in the Department of Medical Research (DMR) collections. The morphological characters of the pupa and larva, currently unknown, are described in detail.