Comparative susceptibility of two forms of Anopheles sinensis Wiedemann 1828 (Diptera : Culicidae) to infection with Plasmodium falciparum, P. vivax, P. yoelii and the determination of misleading factor for sporozoite identification.
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Date
1998-03-18
Authors
Rongsriyam, Y
Jitpakdi, A
Choochote, W
Somboon, P
Tookyang, B
Suwonkerd, W
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Abstract
Two karyotypic forms of laboratory-raised Anopheles sinensis, ie Form A (XY1) and Form B (XY2), were experimentally infected with various indigenous strains of Plasmodium falciparum and P. vivax using an artificial membrane feeding technique, and a rodent malaria, P. yoelii, using a direct feeding technic and dissected 7-9 days and 10-15 days after feeding for oocyst and sporozoite rates, respectively. The results revealed that two forms of An. sinensis were refractory vectors for P. falciparum and P. yoelii since 0% of oocyst and sporozoite rates were obtained, but poor vectors for P. vivax since 0.00-85.71% and 0.00-5.88% of oocyst and sporozoite rates were recovered. The sporozoite-like crystal found in the median lobe of the salivary gland of An. sinensis which could be a misleading factor in identification of true sporozoites in the salivary glands is reported for the first time.
Description
The Southeast Asian Journal of Tropical Medicine and Public Health.
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Citation
Rongsriyam Y, Jitpakdi A, Choochote W, Somboon P, Tookyang B, Suwonkerd W. Comparative susceptibility of two forms of Anopheles sinensis Wiedemann 1828 (Diptera : Culicidae) to infection with Plasmodium falciparum, P. vivax, P. yoelii and the determination of misleading factor for sporozoite identification. The Southeast Asian Journal of Tropical Medicine and Public Health. 1998 Mar; 29(1): 159-67