Visut BaimaiPraneet DamrongpholChaliow KuvangkadilokSalisa Sathapanawath2024-06-272024-06-27198919892024Thesis (M.Sc. (Environmental Biology))--Mahidol University, 1989https://repository.li.mahidol.ac.th/handle/20.500.14594/99051Environmental Biology (Mahidol University 1989)The Drosophila nasuta subgroup of the D. immigrans species group (superspecies) is known to contain nine species: D. pulana, D. nixifrons, D.neonasuta, D. kohkoa, D. kepulauana, D. albomicana, D.nasuta, D. pallidifrons, and D. sulfurigaster. The latter species includes three subspecies D. sulfurigaster sulfurigaster, D. s. albostrigata and D. s. bilimbata. Members of the nasuta subgroup are widespread throughout Southeast Asia. Cytogenetic study has indicated that these species are highly polymorphic for chromosomal inversions. This study deals with the salivary gland chromosomes of two of these species: D. s. albostrigata and D. albomicana collected from Mae-Sod and Thung-Song, Thailand. The frequencies of gene arrangements in the samples showed seasenal variations that appeared to be correlated with temperature changes.xii, 101 leaves : ill.application/pdfengผลงานนี้เป็นลิขสิทธิ์ของมหาวิทยาลัยมหิดล ขอสงวนไว้สำหรับเพื่อการศึกษาเท่านั้น ต้องอ้างอิงแหล่งที่มา ห้ามดัดแปลงเนื้อหา และห้ามนำไปใช้เพื่อการค้าChromosomesDrosaphila albomicanaDrosophila sulfurigasterDrosophilaPolymorphism (Genetics)Salivary glandsMaster ThesisMahidol University