Hybridization and some biological facts of seven strains of the Anopheles leucosphyrus group (Reid, 1968)

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  • KANDA Tozo
    Department of Medical Zoology, St. Marianna University School of Medicine
  • TAKAI Kenji
    Department of Medical Zoology, St. Marianna University School of Medicine
  • CHINNG Geok Lian
    Division of Medical Entomology, Institute for Medical Research
  • CHEONG Weng Hooi
    Division of Medical Entomology, Institute for Medical Research
  • SUCHARIT Supat
    Department of Medical Entomology, Faculty of Tropical Medicine and Public Health, Mahidol University

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Other Title
  • Anopheres leucosphyrus 種群の 7 系統に関する交配と二, 三の生物学的性状について
  • Anopheres Leucosphyrus種群の7系統に関する交配と二,三の生物学的性状について〔英文〕
  • Anopheres Leucosphyrusシュグン ノ 7 ケイトウ ニ カ

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Abstract

Seven strains collected from geographically distant places, Chantaburi (CTB), Kanchanaburi (KCH) in Thailand, Perlis (IMR), Pahang (KSU), Kota Belud (KTD), Sabah, Kuching (SWK) and Niabet (SWN), Sarawak in Malaysia were used for morphological observations, hybridization and cytogenetic observations in order to analyse phylogenetic relationships among the strains. All these 7 strains were shown to belong to the same species group with homosequencial banding patterns of salivary gland polytene chromosomes. SWK and SWN strains, sharing identical morphological characters, however, were genetically separated from the other 5 strains. The informations of phylogenetic relaitonships and the results of morphological confirmations among the 7 strains indicated that dirus is not separated from balabacensis in species level. IMR and KSU strains were most closely related to each other with strong affinities. CTB is closely related to KCH but each strain showed different degree of genetic affinities to the other strains. KTD was more diverged from CTB than from IMR strain. The relationship between IMR and KCH was more diverged than that between KTD and CTB. The results suggest that IMR and KSU strains might have experienced a recent population "bottleneck" effect.

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