Characterization of wolbachia and cytoplasmic incompatibility in armigeres subalbatus
6
Issued Date
1998
Copyright Date
1998
Resource Type
Language
eng
File Type
application/pdf
No. of Pages/File Size
xii, 107 leaves : ill. (some col.)
ISBN
9746610104
Access Rights
open access
Rights
ผลงานนี้เป็นลิขสิทธิ์ของมหาวิทยาลัยมหิดล ขอสงวนไว้สำหรับเพื่อการศึกษาเท่านั้น ต้องอ้างอิงแหล่งที่มา ห้ามดัดแปลงเนื้อหา และห้ามนำไปใช้เพื่อการค้า
Rights Holder(s)
Mahidol University
Bibliographic Citation
Thesis (M.Sc. (Environmental Biology))--Mahidol University, 1998
Suggested Citation
Wanwisa Jamnongluk Characterization of wolbachia and cytoplasmic incompatibility in armigeres subalbatus. Thesis (M.Sc. (Environmental Biology))--Mahidol University, 1998. Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/103533
Title
Characterization of wolbachia and cytoplasmic incompatibility in armigeres subalbatus
Alternative Title(s)
การศึกษาคุณลักษณะของ Wolbachia และการเข้ากันไม่ได้ของไซโตปลาสซึมในยุงแม่ไก่ (Armigeres subalbatus)
Author(s)
Advisor(s)
Abstract
Cytoplasmic incompatibility is the sterility phenomenon which is widely found in several insect species and known to be correlated with Wolbachia, the rickettsia-like bacterial endosymbionts. By using PCR technology, Armigeres subalbatus was found to be infected with this bacteria. In previous studies, Wolbachia infection was found in only gonad tissue. But in this research, it was also distributed in somatic tissues such as Malpighian tubules and midgut. From phylogenetic analysis we found that Wolbachia strain in Armigeres subalbatus is in the same clade as Aedes albopictus strain. This data suggests that one Wolbachia strain can infect many insect hosts which is one of the desirable attributes for a genetic control system. Armigeres subalbatus expresses partial cytoplasmic incompatibility phenotype when crossed Wolbachia-infected males with uninfected females, 57 % egg mortality (n = 10), while in the control cross, there is 9.53% egg mortality (n = 10 Mann-Whitney U test, P<0.0025). The loss of cytoplasmic incompatibility of this insect has been found as in other insect species, when crossed aged-infected males with uninfected females (25% egg mortality Mann-Whitney U test P<0.03). The percent egg mortality of the field caught infected and uninfected mother were determined and found that there is no significantly different percent egg mortality. From this result, we doubted that field male Armigeres subalbatus might mate when they are old. In order to check for the age of the flies in the swarm, the fluorescence pigment in mosquito's head capsule was determined. And from the spectrofluorometric results, we found that males Armigeres subalbatus in the field population mate when they are older than 11 days old. These data might be useful to explain the mechanism of spreading of Wolbachia and the co-existence of the uninfected and infected-Wolbachia in the host in nature.
Description
Environmental Biology (Mahidol University 1998)
Degree Name
Master of Science
Degree Level
Master's degree
Degree Department
Faculty of Science
Degree Discipline
Environmental Biology
Degree Grantor(s)
Mahidol University