test Browse by Author Names Browse by Titles of Works Browse by Subjects of Works Browse by Issue Dates of Works
       

Advanced Search
Home   
 
Browse   
Communities
& Collections
  
Issue Date   
Author   
Title   
Subject   
 
Sign on to:   
Receive email
updates
  
My Account
authorized users
  
Edit Profile   
 
Help   
About T-Space   

T-Space at The University of Toronto Libraries >
School of Graduate Studies - Theses >
Master >

Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/17502

Title: The Effects of Population Density and Knock-downs of Llipid Metabolism Genes on the Expression of Cuticular Hydrocarbons in Drosophila melanogaser
Authors: Chu, Adrienne
Advisor: Levine, Joel
Department: Ecology and Evolutionary Biology
Keywords: hydrocarbons
Drosophila melanogaster
pheromone
population density
Issue Date: 7-Aug-2009
Abstract: In Drosophila melanogaster, chemical cues in the form of cuticular hydrocarbons play an important role in reproductive behavior. The social and genetic processes that regulate their expression, however, are poorly understood. The social environment has been shown to influence hydrocarbon display. In this study, the effect of population density on the expression of hydrocarbons was evaluated. I demonstrate that the production of certain hydrocarbons depends on the population density in which the animal is reared. Individual hydrocarbons fluctuate in quantity independently from one another but the peaks during a light-dark cycle are static depending mostly on chain length. The regulation of fly hydrocarbons which are density-dependent is shown to be sexually dimorphic. The RNAi knockdown of various putative lipid metabolism genes was also used to study hydrocarbon expression. This study reveals that lipid metabolism genes which are not obvious mediators of HC synthesis influence cuticular hydrocarbon profiles.
URI: http://hdl.handle.net/1807/17502
Appears in Collections:Master
Department of Ecology & Evolutionary Biology - Master theses

Files in This Item:

File Description SizeFormat
Chu_Adrienne_20096_MSc_thesis.pdf1.31 MBAdobe PDF
View/Open

Items in T-Space are protected by copyright, with all rights reserved, unless otherwise indicated.

uoft