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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.

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.
AuthorsY Rongsriyam, A Jitpakdi, W Choochote, P Somboon, B Tookyang, W Suwonkerd
JournalThe Southeast Asian journal of tropical medicine and public health (Southeast Asian J Trop Med Public Health) Vol. 29 Issue 1 Pg. 159-67 (Mar 1998) ISSN: 0125-1562 [Print] Thailand
PMID9740293 (Publication Type: Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)
Topics
  • Animals
  • Anopheles (parasitology)
  • Life Cycle Stages
  • Plasmodium falciparum (growth & development, physiology)
  • Plasmodium vivax (growth & development, physiology)
  • Plasmodium yoelii (growth & development, physiology)

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