Some remarks on the malaria and anopheline mosquitoes in Quang Binh province based on the data of the surveys in the third quater, 2004

All of 8 villages of Lam Thuy and Ngan Thuy communes are high malaria endemic areas. The slide positive rates (SPR) in Lam Thuy and Ngan Thuy are 11.56% and 36.20% respectively; P. falciparum positive rates are 72.50% and 67.80%; Parasite positive rates in children at 1-5 years old are 45.00% and 32.20%. Habit of sleeping without bed net of the local population and unfectioning microscopic points have made the malaria situation higher in these two communes. Anopheline component in Km 14 village, Ngan Thuy commune, Le Thuy district is abundant (19 species): with the presentation of the two main malaria vectors An.dirus and An.minimus. The landscape in this area is suitable for the production and development of two main malaria vectors as well as other anopheline mosquitoes

Chromosomal Studies of Thirteen Anopheh'ne Mosquitoes in China / 第二军医大学学报

Mitotic chromosomal karyotypes and their heterochromatin banding of thirteen anopheline mosquitoes in China were observed. Five species belonging to subgenus Cellia were Anopheles maculatus, An. dints, An. kochi, An. splendidus and An. minimus. Eight species belonging to subgenus Anopheles were An. barbirostris, An. messeae, An. crawfordi, An. kunmingensis, An. kweiyangensis, An, hyrcanus, An. sinensis and An. anthropophagus. The results show that the interspecific differences of sex chromosomes and heterochromatin differences in autosomes are useful in anopheline sibling species identification. Two types of completely different chromosomal karyotypes of An. maculatus were found from Yunnan and Sichuan Provinces, and two types of obviously different heterochromatin banding of An. dims were found from Hainan and Yunnan Provinces. Thus, An. maculatus and An. dirus are respectively sibling species complex in China. The salivary gland polytene chromosomes of An. hyrcanus, An. sinensis and An. anthropophagus were also studied. The authors find that the main differ ences of polytene chromosomes of the three species are fixed paracentric inversions in arm 2L.