Publication: Geographic distribution and genetic compatibility among six karyotypic forms of Anopheles peditaeniatus (Diptera: Culicidae) in Thailand
Issued Date
2012-12-01
Resource Type
ISSN
01275720
Other identifier(s)
2-s2.0-84869754152
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Mahidol University
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SCOPUS
Bibliographic Citation
Tropical Biomedicine. Vol.29, No.4 (2012), 613-625
Suggested Citation
A. Saeung, V. Baimai, S. Thongsahuan, G. S. Min, M. H. Park, Y. Otsuka, W. Maleewong, V. Lulitanond, K. Taai, W. Choochote Geographic distribution and genetic compatibility among six karyotypic forms of Anopheles peditaeniatus (Diptera: Culicidae) in Thailand. Tropical Biomedicine. Vol.29, No.4 (2012), 613-625. Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/14237
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Title
Geographic distribution and genetic compatibility among six karyotypic forms of Anopheles peditaeniatus (Diptera: Culicidae) in Thailand
Abstract
Fifty-three isolines of Anopheles peditaeniatus were established from individual wild-caught females collected from cow-baited traps in 17 provinces of Thailand. Three types of X (X 1 , X 2 , X 3 ) and 6 types of Y (Y 1 ,Y 2 , Y 3 , Y 4 , Y 5 , Y 6 ) chromosomes were determined based on different amounts of major block(s) of heterochromatin. These sex chromosomes comprised 6 karyotypic forms designated as Forms A (X 3 , Y 1 ), B (X 1 , X 2 , X 3 , Y 2 ), C (X 3 , Y 3 ), D (X 1 , X 2 , X 3 , Y 4 ), E (X 1 , X 2 , X 3 ,Y 5 ) and F (X 2 , X 3 , Y 6 ). Form F is a new metaphase karyotype discovered in this study and is commonly found in all regions. Form A was found only in Lampang province, whereas Form E is widespread throughout the country. Forms B, C and D were obtained from the northern, northeastern, western and southern regions. Crossing experiments among the 11 isoline colonies representing the 6 karyotypic forms of An. peditaeniatus indicated genetic compatibility yielding viable progenies and complete synapsis of salivary gland polytene chromosomes through to the F 2 -generations. The results suggested the conspecific nature of these karyotypic forms which were further supported by very low intraspecific variation (genetic distance = 0.000-0.003) of nucleotide sequences in ribosomal DNA (ITS2) and mitochondrial DNA (COI and COII).