Malays. Appl. Biol. (2012) 41(2): 11–18
IDENTIFICATION AND CHARACTERIZATION OF POLYTENE CHROMOSOMES OF Bactrocera papayae (DIPTERA: TEPHRITIDAE)
YESMIN, F.1,2 and CLYDE, M.M.1*
1School of Environmental and Natural Resource Sciences, Faculty of Science and Technology, University Kebangsaan Malaysia, 43600 Bangi, Selangor DE, Malaysia.
2Radiation Entomology and Acarology Division, Institute of Food and Radiation Biology, Bangladesh Atomic Energy Commission, E-12/A, Agargaon, Sher-e-bangla Nagar, Dhaka-1207, Bangladesh.
*Email:
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ABSTRACT
The present study constitutes a first attempt to identify the larval salivary gland polytene chromosome arms of Bactrocera papayae Drew & Hancock. This species belongs to the family Tephritidae and is commonly known as the Asian papaya fruit fly. A photographic representation of the polytene chromosomes of this species is provided and the identifying tips as well as most prominent landmarks of each polytene chromosome are presented and discussed. Each polytene nucleus consists of five long chromosomes. According to the position of centromere, the longer arm was designated as left (L) and the shorter arm as right (R). No polytenized sex chromosomes are seen, indicating that five polytene chromosomes correspond to the five autosomes of mitotic chromosomes.
Key words: fruit fly, Bactrocera papayae, polytene chromosomes, salivary gland, polyphagous pest
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