Bionomics of the common mosquitoes of Dacca
| Autor: | Muhammad Moizuddin, Mahmud-Ul Ameen |
|---|---|
| Rok vydání: | 1973 |
| Předmět: | |
| Zdroj: | Journal of Natural History. 7:1-21 |
| ISSN: | 1464-5262 0022-2933 |
| DOI: | 10.1080/00222937300770011 |
| Popis: | Mosquito-borne diseases, other than malaria, are becoming important public health problems in Bangladesh. Wolfe & Aslamkhan (1971) gave evidence that filariasis has been present for many years in what is now Bangladesh. Their surveys indicated that bancroftian filariasis is present in all districts with the highest prevalence (14%) in Dinajpur district in the north-west. Other important foci are in Chittagong Hill Tracts, Rangpur, Pabna, and Barisal districts; Dacca city has 0.9% infection. They found only two cases of malayan filariasis, Bwgia maluyi (Brug 1927) Buckley 1958, in the districts of Chittagong and Chittagong Hill Tracts. Barry et aE. (1971) found 16.8% of 9624 inhabitants examined in Thakurgaon Thana of Dinajpur district with Wuchereria bancrofti (Cobbold 1877) Seurat 1921 microfilariae of nocturnal periodicity although the clinical manifestation were seen in only 10.1% of the male population. Wolfe & Aslamkhan (1970) found CuEex pipiens fatigans Wiedemann to be the primary vector of rural bancroftian filariasis in Thakurgaon Thana. This mosquito is present in large numbers throughout Bangladesh and it is likely to be the main vector of filariasis all over the country. Wolfe & Aslamkhan (1971) noted that numerous ponds or tanks of water with ideal breeding conditions for Mansonia spp., the usual vectors of Brugia malayi, are common and that suitable climatic conditions for the transmission of this species exist in many parts of Bangladesh. They referred to a report of B. malayi from monkeys in the northern Chittagong Hill Tracts which suggests the possibility of an animal reservoir of human infection in the area. Halstead (1966 a) in a review noted that a severe mosquito-borne disease caused by dengue virus of multiple types have been reported in the Philippines, Thailand, Malaysia, and eastern India during the last two decades. Such a disease was reported in Calcutta in 1963 with serological evidence of dengue infection. Haemorrhagic fever is growing in public health importance because of the progressive spread of the disease. Bangladesh was not included in the map showing the distribution of haemorrhagic fever in South and South-east Asia (Halstead, 1966 a), although an outbreak in the summer of 1964 caused several deaths in Dacca. The febrile disease has occasionally been diagnosed clinically since then and has been locally known as ’ Dacca fever ‘. Wisseman et al. (1970) analysed its viral isolates some of which were found to be closely related to Dengue-type 1 and distantly related to Dengue-type 3. Halstead (1966 a) compiled a table which shows that in South and SouthEast Asia Dengue and Chikungunya viruses have been isolated from Aedes aegypti (L.), Culex fatigans Wiedemann, and Culex tritaeniorhynchus Giles. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|