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Title: Cytogenetic, cross-mating and molecular evidence of four cytological races of Anopheles crawfordi (Diptera: Culicidae) in Thailand and Cambodia
Authors: Atiporn Saeung
Visut Baimai
Sorawat Thongsahuan
Yasushi Otsuka
Wichai Srisuka
Kritsana Taai
Pradya Somboon
Wannapa Suwonkerd
Tho Sochanta
Wej Choochote
Chiang Mai University
Mahidol University
Prince of Songkla University
Kagoshima University
Entomology Section
Thailand Ministry of Public Health
National Center for Parasitology, Entomology and Malaria Control
Keywords: Agricultural and Biological Sciences;Biochemistry, Genetics and Molecular Biology;Immunology and Microbiology
Issue Date: 1-Jan-2014
Citation: Comptes Rendus - Biologies. Vol.337, No.11 (2014), 625-634
Abstract: © 2014 Académie des sciences. Twenty-nine isolines of Anopheles crawfordi were established from wild-caught females collected from cow-baited traps in Thailand and Cambodia. Three types of X (X<inf>1</inf>, X<inf>2</inf>, X<inf>3</inf>) and four types of Y (Y<inf>1</inf>, Y<inf>2</inf>, Y<inf>3</inf>, and Y<inf>4</inf>) chromosomes were identified, according to differing amounts of extra heterochromatin. These sex chromosomes represent four metaphase karyotypes, i.e., Forms A (X<inf>1</inf>, X<inf>2</inf>, X<inf>3</inf>, Y<inf>1</inf>), B (X<inf>1</inf>, X<inf>2</inf>, X<inf>3</inf>, Y<inf>2</inf>), C (X<inf>2</inf>, Y<inf>3</inf>) and D (X<inf>2</inf>, Y<inf>4</inf>). Forms C and D are novel metaphase karyotypes confined to Thailand, whereas forms A and B appear to be common in both Thailand and Cambodia. Cross-mating experiments between the four karyotypic forms indicated genetic compatibility in yielding viable progenies and synaptic salivary gland polytene chromosomes. The results suggest that the forms are conspecific and A. crawfordi comprises four cytological races, which is further supported by very low intraspecific variation (mean genetic distance = 0.000-0.018) of the nucleo.
ISSN: 17683238
Appears in Collections:Scopus 2011-2015

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